Aerosol generating device

Abstract

The utility model provides an aerial fog generating device. The aerial fog generating device comprises a chamber; the first heating element and the second heating element surround the cavity and are arranged at intervals in the axial direction of the cavity; a first electrode electrically conductive with the first heating element, avoiding the second heating element; a second electrode electrically conductive with the second heating element, avoiding the first heating element; a third electrode conducting electricity simultaneously with the first heating element and the second heating element; the battery cell is used for supplying power; the circuit is used for simultaneously guiding current in the circumferential directions of the first heating element and the second heating element only by connecting one of the first electrode and the second electrode with the positive electrode of the battery core and connecting the other electrode with the negative electrode of the battery core; and the third electrode is not connected to the circuit, or the third electrode is not connected with the circuit. According to the aerial fog generating device, only the first electrode and the second electrode are connected into the circuit, and the third electrode is not connected into the circuit, so that current is guided in the circumferential directions of the first heating element and the second heating element at the same time, and higher heating power is achieved.

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. 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, arranged around the chamber and spaced apart in an axial direction of the chamber, for heating the aerosol-generating article;

[0007] A first electrode is arranged on the first heating element and is electrically conductive with the first heating element; the first electrode is away from the second heating element;

[0008] a second electrode, arranged on the second heating element and conducting electricity with the second heating element; the second electrode is away from the first heating element;

[0009] a third electrode extending from the first heating element to the second heating element and conducting electricity with both the first heating element and the second heating element;

[0010] Battery cells, used for power supply;

[0011] The circuit is arranged to guide current in the circumferential direction of the first heating element and the second heating element at the same time by only connecting one of the first electrode and the second electrode to the positive electrode of the battery cell and the other to the negative electrode of the battery cell; and the third electrode is not connected to the circuit or the third electrode is not connected to the circuit.

[0012] In some embodiments, the third electrode is not connected to the circuit, which can be characterized or described as the third electrode is not connected to the circuit to form an electrical connection loop; thus, the third electrode is not connected to a signal that is not used to generate or receive voltage or current, etc.

[0013] In some embodiments, the third electrode is not connected to the circuit, which can be characterized or described as the third electrode is mechanically disconnected from the circuit and not connected. For example, the third electrode is not connected to the circuit through a conductive lead or a conductive element.

[0014] In some embodiments, it also includes:

[0015] a substantially tubular base at least partially surrounding or defining the chamber;

[0016] The first heating element and / or the second heating element comprises a coating bonded to the substrate.

[0017] In some embodiments, the circumference of the substrate is greater than the axial length of the substrate; and / or the axial length of the substrate does not exceed 15 mm.

[0018] In some embodiments, the first electrode and / or the second electrode and / or the third electrode are arranged to extend along the axial direction of the chamber;

[0019] The first electrode and the second electrode are aligned along the axial direction of the chamber, and a portion of the third electrode is opposite to the first electrode along the radial direction of the chamber, and a portion of the third electrode is opposite to the second electrode along the radial direction of the chamber.

[0020] In some embodiments, it also includes:

[0021] an opening through which, in use, an aerosol-generating article can be at least partially received in or removed from the chamber; the first heating element being closer to the opening than the second heating element;

[0022] At least one hollow or empty electrode is arranged on the first heating element and is located between the first electrode and the third electrode, so that when the circuit simultaneously guides current on the first heating element and the second heating element, the first heating element has a heating temperature greater than that of the second heating element; the empty electrode is not connected to the circuit, or the empty electrode is not connected to the circuit.

[0023] In some embodiments, the hollowing is arranged to extend from the first electrode to the third electrode along a circumferential direction of the first heating element.

[0024] In some embodiments, the hollowing is substantially perpendicular to the first electrode and / or the third electrode;

[0025] Alternatively, the empty electrode is substantially parallel to the first electrode and / or the third electrode.

[0026] In some embodiments, the hollow or hollow electrode avoids the second heating element, or the second heating element does not have the hollow or hollow electrode.

[0027] In some embodiments, the first heating element is a closed ring surrounding the chamber; the first heating element is circumferentially divided into a first region and a second region connected in parallel between the first electrode and the third electrode, the first region is located on one side of a virtual line connecting the first electrode and the third electrode, and the second region is located on the other side of the virtual line connecting the first electrode and the third electrode.

[0028] In some embodiments, the hollowing includes a first hollowing located in the first area, and a second hollowing located in the second area;

[0029] The ratio of the area of ​​the first hollowing out to the area of ​​the first region is less than 1 / 4, and / or the ratio of the area of ​​the second hollowing out to the area of ​​the second region is less than 1 / 4.

[0030] 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:

[0031] a chamber having an opening through which an aerosol-generating article can be at least partially received in or removed from the chamber in use;

[0032] a heating element surrounding the chamber for heating the aerosol generating article; the heating element having a side opening in the circumferential direction so that the heating element is non-closed in the circumferential direction; a first electrode electrically conductive to the heating element is arranged on a first side of the side opening, and a second electrode electrically conductive to the heating element is arranged on a second side; the heating element has a first portion and a second portion continuously arranged in the axial direction, the first portion being closer to the opening than the second portion;

[0033] Battery cells, used for power supply;

[0034] a circuit arranged to conduct current in a circumferential direction of the heating element by connecting one of the first electrode and the second electrode to a positive terminal of the battery cell and the other to a negative terminal of the battery cell;

[0035] At least one hollow or empty electrode is arranged on the heating element so that when the circuit guides current on the heating element, the first part has a heating temperature greater than the second part; the empty electrode is not connected to the circuit, or the empty electrode is not connected to the circuit.

[0036] In some embodiments, the at least one hollow or hollow electrode is located in the first portion and avoids the second portion.

[0037] In some embodiments, the empty electrode is arranged to extend from the first portion to the second portion, and the empty electrode includes a first segment located at the first portion, and a second segment located at the second portion;

[0038] The width of the first section is greater than the width of the second section.

[0039] In some embodiments, the width of the empty electrode changes gradually in the axial direction of the heating element.

[0040] 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:

[0041] a chamber having an opening through which an aerosol-generating article can be at least partially received in or removed from the chamber in use;

[0042] A first electrode and a second electrode, surrounding the chamber and arranged at intervals along the axial direction of the chamber;

[0043] a heating element, located between the first electrode and the second electrode and surrounding the chamber, for heating the aerosol-generating article; the heating element having a first portion and a second portion arranged continuously in an axial direction, the first portion being closer to the opening than the second portion;

[0044] Battery cells, used for power supply;

[0045] an electric circuit arranged to conduct current in an axial direction of the heating element by connecting one of the first electrode and the second electrode to a positive terminal of the battery cell and the other to a negative terminal of the battery cell;

[0046] At least one hollow or empty electrode is arranged on the heating element so that when the circuit guides current on the heating element, the first part has a heating temperature greater than the second part; the empty electrode is not connected to the circuit, or the empty electrode is not connected to the circuit.

[0047] In some embodiments, the at least one hollow or hollow electrode is located in the first portion and avoids the second portion.

[0048] In some embodiments, the hollowing extends on the first portion along the axial direction of the heating element;

[0049] Alternatively, the empty electrode extends along the circumference of the heating element on the first portion, or the empty electrode is in a spiral shape surrounding the empty electrode.

[0050] The above aerosol generating device only connects the first electrode and the second electrode to the circuit and does not connect the third electrode to the circuit, thereby simultaneously guiding the current in the circumferential direction of the first heating element and the second heating element, and has a greater heating power. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] 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.

[0052] Figure 1 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0053] Figure 2 is a schematic structural diagram of a heater from one perspective in an embodiment;

[0054] Figure 3 yes Figure 2 A schematic diagram of the structure of the central heater from another perspective;

[0055] Figure 4 yes Figure 2 Schematic diagram of the working current after the central heater is circumferentially expanded;

[0056] Figure 5 is a schematic diagram of the operating current of a heater after circumferential expansion according to another embodiment;

[0057] Figure 6 is a schematic diagram of the operating current of a heater after circumferential expansion according to another embodiment;

[0058] Figure 7 is a schematic diagram of the operating current of a heater after circumferential expansion according to another embodiment;

[0059] Figure 8 is a schematic diagram of the operating current of a heater after circumferential expansion according to another embodiment;

[0060] Fig. 9 is a schematic diagram of the operating current of a heater after circumferential expansion according to another embodiment;

[0061] Fig.10is a schematic diagram of the operating current of a heater after circumferential expansion according to another embodiment;

[0062] Fig.11 It is a structural schematic diagram of a heater of another embodiment from one perspective. DETAILED DESCRIPTION

[0063] 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.

[0064] 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.

[0065] In further optional implementations, 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.

[0066] 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.

[0067] 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:

[0068] a chamber having an opening 40; in use, an aerosol-generating article 1000 can be removably received in the chamber through the opening 40 of the chamber;

[0069] A heater 30 is arranged at least partially around or bounding the chamber; when the aerosol generating article 1000 is received in the chamber, the heater 30 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 the heating process;

[0070] 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;

[0071] 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 heater 30 .

[0072] exist Figure 1 In the illustrated embodiment, 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 hollowness of the heater 30. When the aerosol-generating article 1000 is received in the housing 10, 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 housing 10, it is at least partially contained and held in the heater 30.

[0073] In some embodiments, the circumferential length or circumference of the heater 30 is greater than the length d12 of the heater 30 in the axial direction. In some embodiments, the length d12 of the substrate 31 and / or the heater 30 does not exceed 15 mm or is less than 15 mm. In some embodiments, the heater 30 may have a length d12 of about 10 mm to 15 mm and an inner diameter d11 of about 5.8 mm to 10 mm. In some specific embodiments, the heater 30 may have a length d12 of 12 mm; the heater 30 may have an inner diameter d11 of 7.6 mm.

[0074] according to Figure 2 and Figure 3 In the illustrated embodiment, the heater 30 comprises:

[0075] a tubular substrate 31; in use, a chamber for accommodating and holding the aerosol generating article 1000 is at least partially defined by the inner hollow of the substrate 31; and,

[0076] 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.

[0077] In some embodiments, the first heating element 32 and / or the second heating element 33 are closed in the circumferential direction of the heater 30 ; the first heating element 32 and / or the second heating element 33 are closed ring-shaped. Also, the first heating element 32 and the second heating element 33 are spaced apart in the axial direction of the substrate 31 .

[0078] 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.

[0079] 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.

[0080] 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 d21 of the first heating element 32 and the length d22 of the second heating element 33 are both 3 to 7 mm; for example, in a specific embodiment, the length d21 of the first heating element 32 and / or the length d22 of the second heating element 33 is 4.5 mm. Or in some other variations, the length d21 of the first heating element 32 and / or the length d22 of the second heating element 33 are different. Or in some other variations, the length d21 of the first heating element 32 is less than the length d22 of the second heating element 33.

[0081] 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 sequentially arranged in an axial direction of the substrate 31.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] Further based on Figures 2 to 4 In the illustrated embodiment, the heater 30 comprises:

[0087] The first end 311 and the second end 312 are opposite to each other in the axial direction; in practice, 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;

[0088] 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:

[0089] an exposed area 313 located between the first end 311 and the first heating element 32;

[0090] An exposed area 314 is located between the first heating element 32 and the second heating element 33 to separate the first heating element 32 from the second heating element 33;

[0091] The exposed area 315 is located between the second heating element 33 and the second end 312 .

[0092] In some embodiments, along the axial direction of the substrate 31, the exposed area 313 and / or the exposed area 314 and / or the exposed area 315 have substantially the same size. For example, in some optional embodiments, the exposed area 313 and / or the exposed area 314 and / or the exposed area 315 have a length of about 0.5 to 2 mm; more specifically, for example, the exposed area 313 and / or the exposed area 314 and / or the exposed area 315 have a length of about 1.0 mm. In assembly, the aerosol generating device 100 is combined with the exposed area 313 near the first end 311 and the exposed area 315 near the second end by a clamping member, etc., thereby holding and fixing the heater 30.

[0093] according to Figures 2 to 4 As shown, the heater 30 also includes:

[0094] The first electrode 342, the second electrode 343 and the third electrode 341 are used to guide the current on the first heating element 32 and the second heating element 33. The first electrode 342 / the second electrode 343 / the third electrode 341 are elongated or longitudinally shaped. In some embodiments, the first electrode 342 /

[0095] The second electrode 343 / the third electrode 341 is a coating formed by an electrode material with low resistivity. Or in some other embodiments, the first electrode 342 / the second electrode 343 / the third electrode 341 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 material of the first electrode 342 / the second electrode 343 / the third electrode 341 is gold, silver, copper or their alloys with low resistivity. The width d31 of the first electrode 342 / the second electrode 343 / the third electrode 341 is about 1.3 mm.

[0096] In terms of arrangement, the first electrode 342 extends along the axial direction of the heater 30; the first electrode 342 extends from the end of the first heating element 32 close to the first end 311 to the exposed area 314; the first electrode 342 spans the first heating element 32 and is conductively connected to the first heating element 32; and the first electrode 342 is arranged away from the third electrode 341 along the radial direction of the substrate 31 or the heater 30.

[0097] In terms of arrangement, the second electrode 343 extends along the axial direction of the heater 30; and the second electrode 343 is arranged away from the third electrode 341 along the radial direction of the substrate 31 or the heater 30; the length of the second electrode 343 along the axial direction of the heater 30 only covers or the second heating element 33; the second electrode 343 is conductively connected to the second heating element 33.

[0098] In terms of arrangement, the third electrode 341 extends from the end of the first heating element 32 close to the first end 311 to the exposed area 315; thus, a portion of the third electrode 341 is conductively connected to the first heating element 32, and another portion of the third electrode 341 is also conductively connected to the second heating element 33. Alternatively, the third electrode 341 extends from the first heating element 32 to the second heating element 33; or, the extension length of the third electrode 341 spans or substantially spans the first heating element 32 and the second heating element 33. Alternatively, the length of the third electrode 341 is substantially equal to the sum of the lengths of the first heating element 32, the exposed area 314, and the second heating element 33.

[0099] according to Figures 2 to 4 As shown, a first conductive lead 352 is connected to the first electrode 342 by welding or the like, and a second conductive lead 353 is connected to the second electrode 343 by welding or the like; and the heater 30 is connected to the circuit board 20 through the first conductive lead 352 and the second conductive lead 353, thereby guiding current on the first heating element 32 and the second heating element 33.

[0100] In the embodiment according to Figures 2 to 4 As shown, along the circumferential direction of the heater 30, the first heating element 32 is separated or formed into a first region 321 and a second region 322; the first region 321 and the second region 322 are both located between the first electrode 342 and the third electrode 341; and the first region 321 and the second region 322 are arranged opposite to each other in the radial direction of the heater 30. Alternatively, the first region 321 is located on the first side of the virtual line m between the first electrode 342 and the third electrode 341, and the second region 322 is located on the second side of the virtual line m between the first electrode 342 and the third electrode 341. Correspondingly, the second heating element 33 is separated or formed into a third region 331 and a fourth region 332; the third region 331 and the fourth region 332 are both located between the second electrode 343 and the third electrode 341; and the third region 331 and the fourth region 332 are arranged opposite to each other in the radial direction of the heater 30. Alternatively, the third region 331 is located at a first side of a virtual line m between the second electrode 343 and the third electrode 341 , and the fourth region 332 is located at a second side of a virtual line m between the second electrode 343 and the third electrode 341 .

[0101] In an embodiment, the heater 30 conducts current on the first heating element 32 and the second heating element 33 only by connecting the first electrode 342 and the second electrode 343 to the circuit board 20. And in an embodiment, the third electrode 341 may not be connected to the circuit of the circuit board 20, or the third electrode 341 is not connected to the circuit on the circuit board 20. In some embodiments, the third electrode 341 is not connected to the circuit of the circuit board 20, which can be characterized or described as the third electrode 341 is not connected to the circuit to form an electrical connection loop; thus, the third electrode 341 is not connected to a signal that is not used to generate or receive voltage or current. In some embodiments, the third electrode 341 is not connected to the circuit of the circuit board 20, which can be characterized or described as the third electrode 341 is mechanically disconnected from the circuit without connection. For example, no conductive lead or conductive element is welded on the third electrode 341, and thus no mechanical connection is established with the circuit through the conductive lead or conductive element.

[0102] according to Figure 4As shown, when the first electrode 342 and the second electrode 343 are connected to the circuit board 20 and then connected to the positive and negative electrodes of the battery cell 10 to form a loop, the third electrode 341 is only used to provide the first heating element 32 and the second heating element 33 in series. Figure 4 As shown, when the first electrode 342 and the second electrode 343 are respectively connected to the positive and negative poles of the battery cell 10, a current i11 is formed on the first heating element 32, flowing from the first electrode 342 to the third electrode 341 along the circumferential direction through the first region 321, and a current i12 is formed on the first heating element 32, flowing from the first electrode 342 to the third electrode 341 along the circumferential direction through the second region 322; a current i21 is formed on the second heating element 33, flowing from the third electrode 341 to the second electrode 343 along the circumferential direction through the third region 331, and a current i22 is formed on the second heating element 33, flowing from the third electrode 341 to the second electrode 343 along the circumferential direction through the fourth region 332.

[0103] Furthermore, during operation, the first area 321 and the second area 322 of the first heating element 32 work simultaneously in parallel, and the third area 331 and the fourth area 332 of the second heating element 33 work simultaneously in parallel; and the first heating element 32 and the second heating element 33 work simultaneously in series. Therefore, during operation, each area of ​​the first heating element 32 and the second heating element 33 is increased to have a greater operating power, specifically, the power of each area is increased by 4 times compared to when two radially divergent electrodes are used to guide current on one heating element.

[0104] In an embodiment, the first heating element 32 and the second heating element 33 can only work at the same time. In this embodiment, the first heating element 32 and the second heating element 33 heat different sections of the aerosol-generating article 1000 at the same time and with the same power, respectively, and the aerosol generation efficiency of heating different sections of the aerosol-generating article 1000 is substantially the same.

[0105] Figure 5 A schematic diagram of a heater 30a of another embodiment is shown; in this embodiment, at least one or more first hollows extending in the circumferential direction, such as hollows 3211a and hollows 3212a, are arranged on the first region 321a of the first heating element 32a of the heater 30a, and at least one or more second hollows extending in the circumferential direction, such as hollows 3221a and hollows 3222a, are arranged on the second region 322a. In some embodiments, the first hollows / second hollows are formed by removing part of the coating material of the first region 321a / second region 322a by scraping or cutting with a scraper. A plurality of first hollows are arranged at intervals in the axial direction of the first heating element 32a / first region 321a; a plurality of second hollows are arranged at intervals in the axial direction of the second heating element 33a / second region 322a.

[0106] In some embodiments, the first hollow and / or the second hollow are extended from the first electrode 342a to the third electrode 341a; for example, the hollow 3211a / hollow 3212a and the hollow 3222a / hollow 3221a are extended from the first electrode 342a to the third electrode 341a. The plurality of first hollows separate the first region 321a of the first heating element 32a into a plurality of parallel parts in the axial direction. Or in some embodiments, the first hollow and / or the second hollow are spaced from the first electrode 342a / the third electrode 341a; for example, one or more of the hollow 3211a / hollow 3212a and the hollow 3222a / hollow 3221a are spaced from the first electrode 342a / the third electrode 341a.

[0107] In the embodiment, there is no hollowing out on the second heating element 33a; and the area of ​​the first region 321a / the second region 322a is reduced by the first hollowing out and / or the second hollowing out, so that when the positive and negative electrodes of the battery cell 10 are connected to form a loop through the first electrode 342a and the second electrode 343a respectively; the current density on the first region 321a / the second region 322a of the first heating element 32a is greater than the current density on the third region 331a / the fourth region 332a of the second heating element 33a. Therefore, in the series heating, the first heating element 32a has a greater power than the second heating element 33a, and the heating temperature of the first heating element 32a is greater than the heating temperature of the second heating element 33a.

[0108] In some embodiments, the ratio of the area of ​​the first hollowing out to the area of ​​the first region 321a is less than 1 / 4; and / or the ratio of the area of ​​the second hollowing out to the area of ​​the second region 322a is less than 1 / 4.

[0109] or Figure 6 A schematic diagram of a heater 30b of another embodiment is shown; in this embodiment, at least one or more first empty electrodes extending axially, such as empty electrode 3213b and empty electrode 3214b, are arranged on the first region 321b of the first heating element 32b of the heater 30b, and at least one or more second empty electrodes extending axially, such as empty electrode 3223b and empty electrode 3224b, are arranged on the second region 322b.

[0110] In this embodiment, the plurality of first empty electrodes / the plurality of second empty electrodes are arranged at intervals in the circumferential direction; and the plurality of first empty electrodes / the plurality of second empty electrodes are located between the first electrode 342b and the third electrode 341b. In some embodiments, the plurality of first empty electrodes / the plurality of second empty electrodes axially cross the first region 321b / the second region 322b. Or in some other variant embodiments, the length of the plurality of first empty electrodes / the plurality of second empty electrodes is less than the length of the first heating element 32b; so that the plurality of first empty electrodes / the plurality of second empty electrodes are spaced from both ends of the length direction of the first heating element 32b.

[0111] In this embodiment, the heater 30b only connects the first electrode 342b and the second electrode 343b to the positive and negative electrodes of the battery cell 10, respectively, and the plurality of first empty electrodes / multiple second empty electrodes are not connected to the circuit board 20. And, the plurality of first empty electrodes / multiple second empty electrodes are only used to combine with the surface of the first heating element 32b, so as to adjust the first area 321b / second area 322b of the first heating element 32b to have a greater current density than the third area 331b / fourth area 332b of the second heating element 33b. Thus, the first heating element 32b has a greater power density than the second heating element 33b in simultaneous series heating, and the heating temperature of the first heating element 32b is greater than the heating temperature of the second heating element 33b. In some embodiments, the material of the first empty electrode / second empty electrode is the same as the material of the first electrode 342b / second electrode 343b; in some optional embodiments, the first empty electrode / second empty electrode is made of an electrode material of a metal or alloy with low resistivity, such as gold, silver, copper or an alloy thereof.

[0112] or Figure 7 A schematic diagram of a heater 30c of another variant embodiment is shown; in this embodiment, the heater 30c comprises:

[0113] A substantially tubular substrate 31c having a first end 311c and a second end 312c opposite to each other in an axial direction; the substrate 31c surrounds or defines at least a portion of a chamber for receiving the aerosol generating article 1000;

[0114] A heating element 32c is formed or combined on the base 31c; and in this embodiment, the heating element 32c is not closed in the circumferential direction, so that the heating element 32c is defined with a side opening passing through the heating element 32c in the axial direction;

[0115] The first electrode 342c and the second electrode 343c are arranged at intervals along the circumferential direction, and the first electrode 342c and the second electrode 343c are in the shape of long strips extending along the axial direction; the first electrode 342c and the second electrode 343c are respectively located on both sides of the side opening; specifically, the first electrode 342c is located on the first side of the heating element 32c and is conductively connected to the heating element 32c; the second electrode 343c is located on the second side of the heating element 32c and is axially extended and conductively connected to the heating element 32c;

[0116] according to Figure 7 As shown, at least one or more empty electrodes 35c are arranged on the heating element 32c; in use, the empty electrodes 35c are not connected to the circuit board 20 and are only used to adjust the resistance on the heating element 32c. In this embodiment, the plurality of empty electrodes 35c are arranged at intervals in the circumferential direction of the heating element 32c; and the empty electrodes 35c extend in the axial direction. In some embodiments, Figure 7 In some embodiments, the length of the empty electrode 35c is equal to the length of the heating element 32c, so that the empty electrode 35c extends from the upper end to the lower end of the heating element 32c in the axial direction. Alternatively, in some other embodiments, the length of the empty electrode 35c is less than the length of the heating element 32c, so that the empty electrode 35c is arranged at a distance from the upper end / lower end of the heating element 32c.

[0117] according to Figure 7 As shown, the heating element 32c has a first portion 321c and a second portion 322c arranged in the axial direction; wherein the first portion 321c and the second portion 322c are continuous. The empty electrode 35c includes a first segment 351c and a second segment 352c arranged in the axial direction; the first segment 351c and the second segment 352c are also arranged continuously. And in an embodiment, the first segment 351c is formed or combined with the first portion 321c, and the second segment 352c is formed or combined with the second portion 322c; the width of the first segment 351c / the second segment 352c is substantially constant, and the width of the first segment 351c is greater than the width of the second segment 352c. For example, in some embodiments, the first segment 351c has a width of approximately 3 to 4 mm, and the second segment 352c has a width of approximately 1 to 2 mm.

[0118] In use, by connecting the first electrode 342c to the positive electrode of the battery cell 10 and connecting the second electrode 343c to the negative electrode of the battery cell 10, current is guided in the circumferential direction of the heating element 32c to form Figure 7The current i11c flows circumferentially from the first electrode 342c through the first portion 321c to the second electrode 343c, and the current i21c flows from the first electrode 342c through the second portion 322c to the second electrode 343c. In an embodiment, the current i11c is greater than the current i21c, and the first portion 321c of the first heating element 32c has a greater power density than the second portion 322c during heating, and the heating temperature of the first portion 321c is greater than the heating temperature of the second portion 322c.

[0119] or Figure 8 A schematic diagram of a heater 30d of another variant embodiment is shown; in this embodiment, current is guided on a circumferentially non-closed heating element 32d by spaced first electrodes 342d and second electrodes 343d, and a plurality of axially extending empty electrodes 35d are arranged so that the first portion 321d has a greater power density than the second portion 322d, thereby making the heating temperature of the first portion 321d greater than the heating temperature of the second portion 322d. In this embodiment, the width of the empty electrode 35d is gradually reduced in the axial direction. Thus, the width of the first segment 351d / second segment 352d of the empty electrode 35d is varied. In addition, the width of the first segment 351d is greater than the width of the second segment 352d.

[0120] Or in some other embodiments, at least one or more hollows extending in the circumferential direction are arranged on the first part 321d of the heating element 32d, for example, they can be formed by scraping off a part of the first part 321d with a scraper; multiple hollows are arranged at intervals in the axial direction. In some embodiments, the hollows can be arranged only on the first part 321d of the heating element 32d, and avoid the second part 322d. And in some embodiments, the hollows extend from the first electrode 342d to the second electrode 343d; or in some other embodiments, the hollows extend between the first electrode 342d and the second electrode 343d, and are spaced from the first electrode 342d / the second electrode 343d. Thereby, in use, the first part 321d has a greater current density than the second part 322d, so that it is heated faster or at a higher temperature.

[0121] In some embodiments, the hollow is arranged perpendicular to the first electrode 342d / the second electrode 343d; or, the empty electrode 35d is arranged parallel to the first electrode 342d / the second electrode 343d.

[0122] or Fig. 9 A schematic diagram of a heater 30e of another variant embodiment is shown; in this embodiment, the heater 30e comprises:

[0123] A tubular base 31e having a first end 311e and a second end 312e opposite to each other in the axial direction;

[0124] The first electrode 342e and the second electrode 343e are arranged at intervals in the axial direction, and the first electrode 342e and the second electrode 343e are closed rings surrounding the substrate 31e; the first electrode 342e is close to the first end 311e and has a distance from the first end 311e; the second electrode 343e is close to the second end 312e and has a distance from the second end 312e;

[0125] The heating element 32e is combined with the substrate 31e and is arranged to extend between the first electrode 341e and the second electrode 342e in the axial direction. In this embodiment, the heating element 32e is closed in the circumferential direction. Fig. 9 As shown in FIG, the heating element 32e includes a first portion 321e and a second portion 322e along the axial direction.

[0126] In this embodiment, the first electrode 342e and the second electrode 343e are connected to the positive and negative electrodes of the battery cell 10 respectively, thereby guiding the current in the axial direction of the heating element 32e; for example Fig. 9 The current i11e and the current i21e flow through the first portion 321e and the second portion 322e in the axial direction in sequence. Fig. 9 As shown in the figure, at least one or more hollows 3211e extending in the axial direction are arranged on the first part 321e of the heating element 32e; the plurality of hollows 3211e are arranged in parallel in the circumferential direction. Thus, during operation, the first part 321e has a greater current density than the second part 322e, and thus during heating, the first part 321e has a higher heating temperature than the second part 322e.

[0127] or Fig.10 A schematic diagram of a heater 30f of another variant embodiment is shown; in this embodiment, the heater 30f comprises:

[0128] A tubular base 31f having a first end 311f and a second end 312f opposite to each other in the axial direction;

[0129] The first electrode 342f and the second electrode 343f are arranged at intervals in the axial direction, and the first electrode 342f and the second electrode 343f are closed rings surrounding the substrate 31f; the first electrode 342f is close to the first end 311f and has a distance from the first end 311f; the second electrode 343f is close to the second end 312f and has a distance from the second end 312f;

[0130] The heating element 32f is combined with the base 31f and is arranged to extend between the first electrode 341f and the second electrode 342f in the axial direction. In this embodiment, the heating element 32f is closed in the circumferential direction. Fig.10 As shown in FIG. 1 , the heating element 32f includes a first portion 321f and a second portion 322f in the axial direction. The first portion 321f is provided with at least one or more empty electrodes 3211f extending in the circumferential direction; the plurality of empty electrodes 3211f are arranged at intervals in the axial direction.

[0131] In this embodiment, by connecting the first electrode 342f and the second electrode 343f to the positive and negative poles of the battery cell 10 respectively, a current i11f flowing through the first part 321f and a current i21f flowing through the second part 322f in the axial direction are formed in sequence; thus, during operation, the first part 321f has a greater current density than the second part 322f, and thus during heating, the first part 321f has a higher heating temperature than the second part 322f.

[0132] or Fig.11 A schematic diagram of a heater 30g of another variant embodiment is shown; in this embodiment, current is guided in the axial direction of the heating element 32g through the first electrode 342g and the second electrode 343g; and a spirally extending empty electrode 35g is arranged on the first portion 321g of the heating element 32g, so that the first portion 321g has a higher heating temperature than the second portion 322f during operation. The empty electrode 35g is arranged in a spiral shape around the first portion 321g, which is beneficial for forming a uniform temperature field distribution on the first portion 321g.

[0133] 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, arranged around the chamber and spaced apart in an axial direction of the chamber, for heating the aerosol-generating article; a first electrode disposed on the first heating element and electrically conductive with the first heating element; The first electrode is away from the second heating element; a second electrode disposed on the second heating element and electrically conductive with the second heating element; The second electrode is away from the first heating element; a third electrode extending from the first heating element to the second heating element and conducting electricity with both the first heating element and the second heating element; Battery cells, used for power supply; The circuit is arranged to guide current in the circumferential direction of the first heating element and the second heating element at the same time by only connecting one of the first electrode and the second electrode to the positive electrode of the battery cell and the other to the negative electrode of the battery cell; and the third electrode is not connected to the circuit or the third electrode is not connected to the circuit.

2. The aerosol generating device according to claim 1, 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 comprises a coating bonded to the substrate.

3. The aerosol generating device according to claim 2, characterized in that The circumference of the substrate is greater than the axial length of the substrate; and / or the axial length of the substrate does not exceed 15 mm.

4. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The first electrode and / or the second electrode and / or the third electrode are arranged to extend along the axial direction of the chamber; The first electrode and the second electrode are aligned along the axial direction of the chamber, and a portion of the third electrode is opposite to the first electrode along the radial direction of the chamber, and a portion of the third electrode is opposite to the second electrode along the radial direction of the chamber.

5. The aerosol generating device according to any one of claims 1 to 3, characterized in that: Also includes: an opening through which, in use, an aerosol-generating article can be at least partially received in or removed from the chamber; the first heating element being closer to the opening than the second heating element; At least one hollow or empty electrode is arranged on the first heating element and is located between the first electrode and the third electrode, so that when the circuit simultaneously guides current on the first heating element and the second heating element, the first heating element has a heating temperature greater than that of the second heating element; the empty electrode is not connected to the circuit, or the empty electrode is not connected to the circuit.

6. The aerosol generating device according to claim 5, characterized in that The hollowing is arranged to extend from the first electrode to the third electrode in a circumferential direction of the first heating element.

7. The aerosol generating device according to claim 5, characterized in that The hollowing is substantially perpendicular to the first electrode and / or the third electrode; Alternatively, the empty electrode is substantially parallel to the first electrode and / or the third electrode.

8. The aerosol generating device according to claim 5, characterized in that The hollow or empty electrode avoids the second heating element, or the second heating element does not have the hollow or empty electrode.

9. The aerosol generating device according to claim 5, characterized in that The first heating element is a closed ring surrounding the chamber; the first heating element is divided into a first region and a second region in the circumferential direction and connected in parallel between the first electrode and the third electrode, the first region is located on one side of a virtual line connecting the first electrode and the third electrode, and the second region is located on the other side of the virtual line connecting the first electrode and the third electrode.

10. The aerosol generating device according to claim 9, characterized in that The hollowing includes a first hollowing located in the first area, and a second hollowing located in the second area; The ratio of the area of ​​the first hollowing out to the area of ​​the first region is less than 1 / 4, and / or the ratio of the area of ​​the second hollowing out to the area of ​​the second region is less than 1 / 4.

11. An aerosol generating device, configured to heat an aerosol generating article to generate an aerosol; characterized in that: include: a chamber having an open opening; In use, an aerosol-generating article can be at least partially received within or removed from the chamber through the opening; a heating element surrounding the chamber for heating the aerosol generating article; the heating element having a side opening in the circumferential direction so that the heating element is non-closed in the circumferential direction; a first electrode electrically conductive to the heating element is arranged on a first side of the side opening, and a second electrode electrically conductive to the heating element is arranged on a second side; the heating element has a first portion and a second portion continuously arranged in the axial direction, the first portion being closer to the opening than the second portion; Battery cells, used for power supply; a circuit arranged to conduct current in a circumferential direction of the heating element by connecting one of the first electrode and the second electrode to a positive terminal of the battery cell and the other to a negative terminal of the battery cell; At least one hollow or empty electrode is arranged on the heating element so that when the circuit guides current on the heating element, the first part has a heating temperature greater than the second part; the empty electrode is not connected to the circuit, or the empty electrode is not connected to the circuit.

12. The aerosol generating device according to claim 11, characterized in that The at least one hollow or hollow electrode is located in the first portion and avoids the second portion.

13. The aerosol generating device according to claim 11, characterized in that The empty electrode is arranged to extend from the first portion to the second portion, and the empty electrode includes a first section located at the first portion, and a second section located at the second portion; The width of the first section is greater than the width of the second section.

14. The aerosol generating device according to claim 13, characterized in that The width of the hollow electrode changes gradually in the axial direction of the heating element.

15. An aerosol generating device, configured to heat an aerosol generating article to generate an aerosol; characterized in that: include: a chamber having an open opening; In use, an aerosol-generating article can be at least partially received within or removed from the chamber through the opening; A first electrode and a second electrode, surrounding the chamber and arranged at intervals along the axial direction of the chamber; a heating element, located between the first electrode and the second electrode and surrounding the chamber, for heating the aerosol-generating article; the heating element having a first portion and a second portion arranged continuously in an axial direction, the first portion being closer to the opening than the second portion; Battery cells, used for power supply; an electric circuit arranged to conduct current in an axial direction of the heating element by connecting one of the first electrode and the second electrode to a positive terminal of the battery cell and the other to a negative terminal of the battery cell; At least one hollow or empty electrode is arranged on the heating element so that when the circuit guides current on the heating element, the first part has a heating temperature greater than the second part; the empty electrode is not connected to the circuit, or the empty electrode is not connected to the circuit.

16. The aerosol generating device according to claim 15, characterized in that The at least one hollow or hollow electrode is located in the first portion and avoids the second portion.

17. The aerosol generating device according to claim 16, characterized in that The hollowing extends on the first portion along the axial direction of the heating element; Alternatively, the empty electrode extends along the circumference of the heating element on the first portion, or the empty electrode is in a spiral shape surrounding the empty electrode.

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