CN217184817U - Heater, gas mist generating device, and gas mist generating system - Google Patents

Abstract

The application relates to a heater, an aerosol-generating device and an aerosol-generating system, comprising: using a tubular body of flexible insulating material, the tubular body having a first surface and a second surface, the first surface being disposed adjacent to the aerosol-generating article; at least one heating tape disposed on the first surface for heating the aerosol-generating article; electrodes corresponding to the heating belts are arranged on the second surface, and the heating belts are electrically connected with the corresponding electrodes. The heating strips are arranged on the first surface of the tubular body, and the electrodes electrically connected with each heating strip are arranged on the second surface of the tubular body, so that the circuit distribution structure can be simplified, the volume of the heater can be reduced, and the manufacturing process can be simplified.

Description

Heater, gas mist generating device, and gas mist generating system

Technical Field

The embodiment of the application relates to the technical field of aerosol generation, in particular to a heater, an aerosol generating device and an aerosol generating system.

Background

Some aerosol generating devices typically include a heating element that extends into the interior of the smokable article and generates heat within the smokable article, thereby causing the smokable article to volatilize and produce an aerosol. Some aerosol-generating devices generate aerosol by inserting an inhalable article inside a tubular heat-generating body, whereby the tubular heat-generating body causes the inhalable article to generate heat from the circumference of the inhalable article, which in turn causes the inhalable article to volatilize.

The smokable article is typically elongate, the heating element typically causes the whole smokable article to heat simultaneously, and when smoking is stopped, the heating element continues to heat the smokable article, resulting in a large amount of waste of the smokable article.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a heater, aerial fog generating device and aerial fog generating system, brings to make the aerosol generate goods carry out segmentation heating control through setting up a plurality of heating that distribute along the axial each other at intervals to can effectively reduce the waste of aerosol generate goods when stopping smoking.

Embodiments of the present application provide a heater for an aerosol-generating article to generate an aerosol, comprising:

using a tubular body of flexible insulating material, the tubular body having a first surface and a second surface, the first surface being disposed proximate to the aerosol-generating article;

at least one heating tape disposed on the first surface for heating the aerosol-generating article; the electrodes corresponding to the heating strips are arranged on the second surface, and the heating strips are electrically connected with the electrodes corresponding to the heating strips.

The embodiment of this application provides an aerial fog generating device, includes the heater.

An aerosol-generating system provided by an embodiment of the present application comprises the aerosol-generating device, and further comprises an aerosol-generating article; the aerosol-generating device comprises a receiving region for receiving at least part of the aerosol-generating article;

in the receiving zone, the aerosol-generating article is disposed at a periphery of the heater and adjacent to the first surface; or

In the receiving zone, the aerosol-generating article is disposed inside the heater and adjacent to the first surface.

According to the heater, the aerosol generating device and the aerosol generating system, the heating belts are arranged on the first surface of the tubular body, the electrodes electrically connected with the heating belts are arranged on the second surface of the tubular body, so that the heating belts are independently electrically controlled, the circuit distribution structure can be simplified, the size of the heater is reduced, and the manufacturing process is simplified.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Figure 1 is a schematic view of an aerosol-generating device provided by an embodiment of the present application;

FIG. 2 is a schematic view of a heater provided in an embodiment of the present application;

FIG. 3 is a schematic view of a first surface of a tubular body after deployment as provided by an embodiment of the present application;

FIG. 4 is a schematic view of a second surface of a tubular body provided in accordance with an embodiment of the present application after deployment;

FIG. 5 is a schematic view of a tubular body provided by an embodiment of the present application;

FIG. 6 is a schematic view of a first surface of a tubular body provided in accordance with another embodiment of the present application after deployment;

FIG. 7 is a schematic view of a second surface of a tubular body provided in accordance with another embodiment of the present application after deployment;

FIG. 8 is a schematic view of a tubular body provided in accordance with another embodiment of the present application;

FIG. 9 is a schematic view of a tubular body according to yet another embodiment of the present application after deployment;

FIG. 10 is a schematic view of a tubular body provided in accordance with yet another embodiment of the present application;

FIG. 11 is a schematic view of a tubular body according to yet another embodiment of the present application after deployment;

FIG. 12 is a schematic view of a tubular body provided in accordance with yet another embodiment of the present application;

figure 13 is a schematic view of an aerosol-generating device provided by a further embodiment of the present application;

FIG. 14 is a schematic view of a tubular body provided by yet another embodiment of the present application after deployment;

FIG. 15 is a schematic view of a tubular body according to yet another embodiment of the present application after deployment;

FIG. 16 is a top plan view of a tubular body provided in accordance with yet another embodiment of the present application;

FIG. 17 is a schematic view of a tubular body according to yet another embodiment of the present application after deployment;

FIG. 18 is a schematic view of a tubular body according to yet another embodiment of the present application after deployment;

FIG. 19 is a schematic view of a tubular body according to yet another embodiment of the present application after deployment;

in the figure:

1A, an aerosol-generating article; 1B a receiving cavity; b1, insertion port; 1C, power supply components; c1, battery cell; c2, a circuit board; 1D, a bracket;

1. a heater; 11. a tubular body; 12. heating the tape; 121. a first end; 122. a second end; 13. a rod core; 131. a guide part; 132. a base; 14. a first via hole; 15. a second via hole; 16. a third via hole; 17. a fourth via hole;

21. a first electrode; 22. a second electrode; 221. a head end; 222. a terminal end; 223. a first part; 224. a second section; 31. a first lead; 32. a second lead; 321. a first part; 322. A second part.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any order or number of indicated technical features. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship or movement of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

An embodiment of the present application provides an aerosol-generating device for heating an aerosol-generating article to volatilize an aerosol from the aerosol-generating article for consumption, the aerosol may comprise herbal medicine, nicotine or flavour compounds such as tobacco flavourants. In the embodiment shown in figure 1, the aerosol-generating article 1A is a smoking article (e.g. a cigarette, cigar, etc.), but this is not intended to be limiting.

In the embodiment shown in figure 1, the aerosol-generating device comprises a receiving chamber 1B for receiving an aerosol-generating article 1A and a heater 1 for heating the aerosol-generating article 1A, and further comprises a power supply assembly 1C, the power supply assembly 1C being for powering the heater 1 for operation.

Referring to figures 1 and 2, the receiving cavity 1B has an insertion opening B1 through which an aerosol-generating article 1A, such as a cigarette, is removably received within the receiving cavity 1B; at least a part of the heater 1 extends in the length direction in the receiving cavity 1B, and generates heat by electromagnetic induction under a changing magnetic field, or generates heat by resistance when electrified, or radiates infrared rays to the aerosol generating product 1A when excited, so that the aerosol generating product 1A, such as a cigarette, is heated, at least one component of the aerosol generating product 1A is volatilized, and aerosol for suction is formed; the power supply module 1C includes a battery cell C1 and a circuit board C2, the battery cell C1 is a rechargeable dc battery cell and can output dc current, and the circuit board C2 is electrically connected to the rechargeable battery cell C1 and is configured to control output of current, voltage or electric power of the battery cell C1. In other embodiments, the battery cell C1 may also be a disposable battery, which may not be rechargeable or need not be recharged. In other implementations, the power supply assembly 1C may be a wired power supply that is directly connected to mains power via a plug to power the aerosol-generating device.

In a preferred embodiment, the cell C1 provides a dc supply voltage in a range from about 2.5V to about 9.0V, and the cell C1 provides a dc current with an amperage in a range from about 2.5A to about 20A.

Further in alternative implementations, the aerosol-generating article 1A preferably employs a tobacco-containing material that releases volatile compounds from the substrate upon heating; or it may be a non-tobacco material that is suitable for electrically heated smoking after heating. The aerosol-generating article 1A preferably employs a solid substrate, which may comprise one or more of a powder, granules, shredded strips, strips or flakes of one or more of vanilla leaves, tobacco leaves, homogenised tobacco, expanded tobacco; alternatively, the solid substrate may contain additional tobacco or non-tobacco volatile flavour compounds to be released when the substrate is heated. In some alternative implementations, the aerosol-generating article is prepared to have the shape of a conventional cigarette or cigar.

In the embodiment shown in fig. 3-4, the heater 1 comprises a tubular body 11 and a heating strip 12.

The tubular body 11 is made of an insulating material (the insulating material of which the tubular body 11 is made may be rigid or flexible), or has an insulating layer on its surface, and the heating tape 12 is disposed on the insulating layer and is connected to the tubular body 11 in an insulating manner. The heating belt 12 may deliver energy outwards, including conductive heat, radiant heat, and/or radiant infrared, etc., as long as it delivers energy that causes the aerosol-generating article 1A to generate heat. And the heat it conducts or radiates may come from heat generated by the heating belt 12 through resistance heating, or from heat generated by the heating belt 12 through formation of eddy currents and hysteresis in a changing magnetic field, or the like.

Referring to fig. 17 and 18, only one heating tape 12 occupies almost the whole of one of the expanded surfaces of the tubular body 11, the electrode is disposed on the other surface of the tubular body 11, and the electrode is electrically connected to the heating tape 12 through the first via hole 14 and the second via hole 15 formed in the wall of the tubular body 11, and the first via hole 14 and the second via hole 15 may be disposed at opposite ends of the tubular body 11 in the axial direction, as shown in fig. 18; the electrode may be electrically connected to the heating belt 12 through a third via hole 16 and a fourth via hole 17 formed in the wall of the tubular body 11, and the third via hole 16 and the fourth via hole 17 may be provided at opposite ends of the tubular body 11 in the axial direction, as shown in fig. 17.

Referring to fig. 3 and 5, the heating belt 12 has a plurality of heating belts 12, and any two heating belts 12 are spaced apart from each other, and the spacing includes no direct contact with each other, or are isolated from each other, separated from each other, discrete from each other, and the like. In some embodiments, referring to fig. 14, each heating band 12 may be a strip or a band distributed along the axial direction, and a plurality of heating bands 12 are arranged along the circumference of the tubular body, combined into a substantially discontinuous ring shape, in the embodiment shown in fig. 19, the heating belt 12 has two, and the common negative electrode 21 is disposed between the two heating belts 12, and is electrically connected to the two heating belts 12, as the common negative electrode of the two heating belts, for electrical connection with the first lead 31, two electrodes 22 are disposed at opposite ends of the metal material, and are symmetrical with respect to the common cathode 21, when the metal material is wound into a tubular shape to form the tubular body 11, the electrodes 22 (positive electrodes) at opposite ends of the metal material may be overlapped to form one electrode for electrical connection with the second lead 32, in the embodiment shown in fig. 19, the electrodes 21, 22 and the heating belt 12 are provided on the same surface of the metal material. In other embodiments, as shown in fig. 3 and 5, each heating zone 12 is a ring shape distributed along the circumferential direction, and a plurality of heating zones 12 are sequentially arranged along the axial direction of the tubular body 11 to form a plurality of rings separated and isolated from each other on the surface of the tubular body 11 in the axial direction.

In a preferred embodiment, at least one heating band 12 comprises a magnetically susceptible material such as grade 430 stainless steel (SS430), grade 420 stainless steel (SS420), or an iron-nickel alloy material (e.g., permalloy) that generates heat in a varying magnetic field, such that the heating band generates heat in the varying magnetic field, and thus self-generates heat in the varying magnetic field due to eddy currents and hysteresis, and conducts and/or radiates heat to the aerosol-generating article 1A to heat the aerosol-generating article 1A. Correspondingly, the aerosol generating device further comprises a magnetic field generator, such as an induction coil, for generating a changing magnetic field under alternating current, and the circuit board C2 is connected with the electric core C1 and the induction coil and can convert the direct current output by the electric core C1 into the alternating current, preferably, the frequency of the alternating current is between 80KHz and 400 KHz; more specifically, the frequency may be in the range of approximately 200KHz to 300 KHz. In order to prevent the tubular body 11 from generating heat in the changing magnetic field, the tubular body 11 may be made of a non-metallic material, or a metal that does not generate heat in the changing magnetic field, such as aluminum, an aluminum alloy, a magnesium alloy, a copper alloy, a titanium alloy, a zinc alloy, and austenitic stainless steel. The heating band 12 in this embodiment may be a metal ring or an alloy ring or a coating, and is disposed on the surface of the tubular body 11 by sleeving or deposition.

In a preferred embodiment, at least one of the heating strips 12 has an infrared coating thereon that is capable of being excited by direct current supplied from the cell C1 to radiate infrared light to heat at least a portion of the aerosol-generating article 1A. The infrared coating is preferably composed of oxides of at least one metal element of Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, etc., which radiate far infrared rays having heating effect above when power is supplied; the preparation method can be that the metal oxide is obtained by spraying the metal oxide on the surface of the substrate 31 by means of plasma spraying and then solidifying. The aerosol-generating article 1A may generate heat when the infrared coating emits infrared light towards the aerosol-generating article 1A, and may generate an aerosol when the heating temperature reaches a predetermined temperature. In one embodiment, the infrared coating is disposed on the casting sheet, and the casting sheet is formed into a tubular shape to form the tubular body 11 having the heating band 12, and the casting sheet is selected as a support or a support of the infrared coating, so that the thickness of the tubular body 11 can be made smaller, thereby improving the heating efficiency while reducing the heat loss, and compared with a quartz tube (the wall thickness of which is about 0.8mm) and a transparent ceramic tube (the minimum wall thickness of which is also greater than 0.4mm) as a support or a support of the infrared coating, the casting sheet is selected as a support or a support of the infrared coating, so that the thickness of the tubular body can be less than or equal to 0.4mm, even the wall thickness of the tubular body can be less than 0.2mm, so that the heating band 12 is almost in direct contact with the aerosol-generating article 1A, which contributes to further improving the heating efficiency.

In the embodiment shown in fig. 3-5, the heating belt 12 is made of a conductive material, such as a resistive conductive material containing fe-cr-al, nicr, ni-fe, pt, w, ag, etc., and further, for example, the heating belt 12 further includes a foil or sheet of resistive metal having a thickness of 50-100 μm. And in some implementations, the heating tape 12 is bonded to the tubular body 11 by winding or by prefabrication, etc. Each heating strip 12 is in the form of a non-closed loop, and one end of each heating strip 12 extending circumferentially of the tubular body 11 is a first end 121 for electrical connection with the first electrode 21, and the other end extending circumferentially of the tubular body 11 is a second end 122 for electrical connection with the second electrode 22, and the circuit board C2 connects the first electrode 21 and the second electrode 22, so as to supply power to the heating strip 12 via the first electrode 21 and the second electrode 22, thereby causing the heating strip 12 to generate heat by resistance, to deliver heat to the aerosol-generating article 1A, or to cause an infrared coating on the heating strip 12 to be excited to emit infrared rays. The first electrode 21 and the second electrode 22 are disposed at two ends of the ring shape of the heating belt 12, that is, the first end 121 and the second end 122, but not disposed at two ends of the heating belt 12 in the axial direction (the two ends of the heating belt 12 in the axial direction are respectively the third end and the fourth end), because the distance extending in the circumferential direction between the first end 121 and the second end 122 is greater than the axial extending distance between the third end and the fourth end, the electrical path between the first electrode 21 and the second electrode 22 can be made longest, which helps to increase the effective heating resistance of the heating belt 12, and improve the heating efficiency. The thickness of the heating tape 12 is less than 0.05mm, preferably 0.005-0.02 mm, in some embodiments the mass fraction of silver in the heating tape 12 is greater than 60%, in more preferred embodiments the mass fraction of silver in the heating tape 12 is greater than 80%. In another embodiment, referring to fig. 15, the first electrode 21 is connected to a third end of the heating strip 12, and the second electrode 22 is connected to a fourth end of the heating strip 12, where the third end and the fourth end are opposite ends of the heating strip 12 in the axial direction, so that the resistance of the current flowing between the third end and the fourth end of the heating strip 12 can be increased by improving the material of the heating strip 12, for example, reducing the percentage of silver in the first paste.

Referring to fig. 3, the heating strips 12 are disposed on a first surface of the tubular body 11, and the electrodes (including the first electrode 21 and the second electrode 22) are disposed on a second surface of the tubular body 11, and the first surface and the second surface can be an inner surface and an outer surface of the tubular body 11, so as to meet the requirement of individually controlling the temperature and the electric control of each heating strip 12 under the condition of a large number of heating strips 12, and to facilitate the distribution of the electrode circuits.

Referring to fig. 4, the first electrode 21 on the second surface extends along the axial direction of the tubular body 11 to form a strip shape, so as to form a common cathode, and the number of pins can be effectively reduced by using the common cathode, thereby simplifying the circuit structure. A second electrode 22 is separately connected to each heating belt 12, and the second electrode 22 can be a positive electrode, so that each heating belt 12 can be independently electrically controlled, for example, by heating different heating belts 12 at different times, or by heating different heating belts 12 at different heating powers at the same time, or by heating a part of the heating belts 12 at the same time with the same heating power, etc. In order to reduce the path loss, the first electrode 21 and the second electrode 22 may be made of a material with high conductivity and low resistivity, such as gold, silver, copper, etc.

Referring to fig. 3 and 5, a first lead 31 is connected to the first electrode 21, a second lead 32 is connected to each second electrode 22, the first lead 31 and the second lead 32 may be common leads, such as copper wires, and the cross-section of the leads may be circular, square or rectangular, and the leads are mainly used for electrically connecting the power supply component C and the electrodes, so that the power supply component C supplies power to the heating tape 12 for supplying energy to the aerosol-generating article. The number of the second leads 32 corresponds to the number of the heating tapes 12, wherein the number of the heating tapes 12 can be 1-15; the number of heating strips 12 may correspond to the number of suction openings of the aerosol-generating article 1A, and if the aerosol-generating article 1A can be sucked 10 openings, the number of heating strips 12 may be 10; when different mouths are drawn, different heating bands 12 play a major role in generating heat, or different heating bands 12 play a major role in generating heat at different time periods, and the remaining heating bands do not generate heat or generate heat only at a low temperature, so as to preheat or keep warm the aerosol-generating article 1A, so that when the drawing is stopped, the aerosol-generating article 1A can continue to generate aerosol only at a high local temperature, and the remaining portions do not generate aerosol, thereby being capable of reducing the waste rate of the aerosol-generating article 1A. In order to realize energy saving, the base material of the tubular body 11 may be made of a material with a large heat capacity, such as ceramic, and the like, so that when at least one heating band 12 generates heat through resistance, the tubular body 11 can absorb, transmit and store redundant heat, and further can preheat other regions (regions not corresponding to the heating band 12) of the aerosol-generating product 1A, and when the heating band 12 stops transmitting energy and is heated by other heating bands, a new heated region on the aerosol-generating product 1A can be heated quickly, so that aerosol is generated quickly, the suction experience of a user is improved, and energy consumption is reduced at the same time.

In the embodiment shown in fig. 3 to 5, the tubular body 11 is formed by winding a casting sheet, and the heating belt 12, the first electrode 21 and the second electrode 22 may be provided on the casting sheet before the casting sheet is wound into the tubular body 11 to simplify the process. The heating belt 12 may be a belt-like structure extending in the widthwise direction of the cast sheet before the cast sheet is curled into the tubular body 11, including a linear belt-like structure, a waved belt-like structure undulating in the axial direction, a belt-like structure serpentine-folded back in the widthwise direction, and the like, preferably a linear belt-like structure. After the casting sheet is curled into a tubular body 11 in its widthwise direction, the heating belt 12 is formed into a non-closed loop. The heating tape 12 on the tubular body 11 has a first end 121 and a second end 122 along the circumferential direction of the tubular body 11, the first end 121 and the second end 122 are both free ends, the first end 121 is used for electrically connecting with the first electrode 21, and the second end 122 is used for electrically connecting with the corresponding second electrode 22. Since the distance between the first end 121 and the second end 122 is greater than the distance between the third end and the fourth end of the heating belt 12 in the axial direction, the first end 121 and the second end 122 can be used as the ends electrically connected to the electrodes, and a larger resistance can be obtained than the third end and the fourth end of the heating belt 12 in the axial direction, which are electrically connected to the electrodes, thereby contributing to an increase in the heat generation efficiency of each heating belt 12.

Because the first surface and the second surface are disposed opposite to each other, the inner surface and the outer surface of the tubular body 11 are each other, and the tubular body 11 is made of an insulating material, in order to facilitate the electrical connection between the first electrode 21 and the second electrode 22 and the heating belt 12, a hole may be formed in the tubular body 11 for the first electrode 21 and the second electrode 22 to pass through, and further, the first end 121 and the second end 122 of the heating belt 12 to be electrically connected.

Specifically, referring to fig. 3 and 5, the heater 1 has a first via hole 14 and a second via hole 15, the first via hole 14 penetrates through the first end 121 of the heating belt 12 and the tubular body 11, and the first electrode 21 or the material of the first electrode 21 penetrates through the first via hole 14 or fills the first via hole 14 to be electrically connected to the first end 121; the second through hole 15 penetrates through the second end 122 of the heating tape 12 and the tubular body 11, and the material of the second electrode 22 or the second electrode 22 penetrates through the second through hole 15 or fills the second through hole 15 to be electrically connected with the second end 122. In other embodiments, reference may be made to fig. 6 to 8, and it is also possible that the first via hole 14 penetrates through the tubular body 11 and the first electrode 21, and the material of the first end 121 of the heating tape 12 or the first end 121 penetrates through the first via hole 14 or fills the first via hole 14 to be electrically connected with the first electrode 21; the second through hole 15 penetrates through the tubular body 11 and the second electrode 22, and the material of the heating tape 12 or the second end 122 of the heating tape 12 penetrates through the second through hole 15 or fills the second through hole 15 to be electrically connected with the corresponding second electrode 22.

Referring to fig. 3 and 7, the number of the first via holes 14 and the second via holes 15 is equal to the number of the heating tapes 12, and the first via holes 14 and the second via holes 15 are disposed in one-to-one correspondence with the heating tapes 12. In one embodiment, as shown in fig. 3 and 7, the first electrode 21 is only one, the plurality of first via holes 14 are distributed in a row along the axial direction of the tubular body 11, the plurality of second via holes 15 are distributed in another row along the axial direction of the tubular body 11, and the two rows may be parallel to each other. In another embodiment as shown in fig. 11, the first electrodes 21 have two independent electrodes, are distributed at two opposite ends of the casting sheet, and are axially offset to connect with different radiation charges, and the schematic diagram of the first surface of the tubular body 11 after being unfolded according to this embodiment may only have one third via hole 16 more than the schematic diagram of the first surface of the tubular body 11 after being unfolded as shown in fig. 3, so in the embodiment as shown in fig. 11, in combination with fig. 3, part of the first via holes 14 and part of the second via holes 15 are distributed in a row along the axial direction of the tubular body 11, and the rest of the first via holes 14 and the rest of the second via holes 15 are distributed in another row along the axial direction of the tubular body 11. In other embodiments, three or more independent first electrodes 21 may be provided, and the distribution principle is similar to that of the embodiment shown in fig. 11, and will not be described herein again.

Referring to fig. 3 to 5, the heater 1 further includes a third via hole 16 and a fourth via hole 17, the third via hole 13 is disposed to be offset from the heating tape 12 and penetrate through the tubular body 11, and is penetrated or filled with the first electrode 21 or the material of the first electrode 21, so that the material of the first electrode 21 or the material of the first electrode 21 is exposed from the first surface through the third via hole 16, and the fourth via hole 17 is disposed to be offset from the heating tape 12 and penetrates through the tubular body 11, and is penetrated or filled with the material of the second electrode 22 or the material of the second electrode 22, so that the material of the second electrode 22 or the material of the second electrode 22 is exposed from the first surface through the fourth via hole 17.

In the embodiment shown in fig. 3 and 4, the number of the fourth via holes 17 is the same as the number of the heating tapes 12, and the fourth via holes 17 are arranged in one-to-one correspondence with the second electrodes 22, and since only one first electrode 21, i.e. one common negative electrode, is provided, and only one third via hole 16 is provided, and is arranged in correspondence with the first electrode 21, the third via holes 16 and the plurality of fourth via holes 17 may be distributed on the same row of the first surface along the circumferential direction of the tubular body. In the embodiment shown in fig. 11, there are two first electrodes 21, i.e. two common negative electrodes, and correspondingly there are two third via holes 16. It will be appreciated that the number of third through holes 16 is the same as the number of first electrodes 21 as a common negative electrode.

Referring to fig. 6 to 8, the heater 1 does not have the third via hole 16 and the fourth via hole 17, the opposite ends of each second electrode 22 are a head end 221 and a tail end 222, respectively, the head end 221 is penetrated by the corresponding second via hole 15, so as to be electrically connected with the corresponding heating tape 12 under the action of the corresponding second via hole 15, and the tail end is intact and can still be disposed on the tubular body 11 for electrically connecting with the lead wire. The number of the first electrode 21 where the first via hole 14 penetrates is equal to the number of the heating tape 12, and the non-penetrated portion of the first electrode 21 is used for electrical connection with another lead.

In a further embodiment, the first electrode 21 is electrically connected to the first lead 31 to electrically connect the circuit board C2 through the first lead 31, and the second electrode 22 is electrically connected to the second lead 32 to electrically connect the circuit board C2 through the second lead 32, thereby being controlled by the circuit board C2.

In the embodiment shown in fig. 3 to 5, the connection terminals of the first lead 31 and the second lead 32 to the tubular body 11 are disposed at the first surface, and the first lead 31 is welded at the third via hole 16 to the first electrode 21 exposed at the first surface through the third via hole 16, the second lead 32 has a plurality of leads disposed in one-to-one correspondence with the fourth via holes 17, and each of the second leads 32 is welded at the corresponding fourth via hole 17 to the second electrode 22 exposed at the first surface through the fourth via hole 17. It is certainly not excluded that a part or all of the fourth via holes 17 communicate with each other to form a common via hole having a larger area.

In the embodiment shown in fig. 6 to 8, the first lead wire 31 and the second lead wire 32 are electrically connected to the tubular body 11, and the first lead wire 31 is directly welded to the first electrode 21 or welded to the first end 121 of the heating tape 12 exposed on the first electrode 21 through the first via hole 14, the second lead wires 32 have a plurality of ones, and are disposed in one-to-one correspondence with the second electrodes 22, and each of the second lead wires 32 is welded to the end of the corresponding second electrode.

When the heater is prepared, please refer to fig. 3-5, (1) a casting sheet is obtained, the casting sheet is made of ceramics, such as zirconia, and the casting sheet is specifically provided with a first surface and a second surface which are oppositely arranged, the first surface and the second surface have larger plane areas, and the casting sheet can have a thickness of about 0.2-1.0 mm; (3) coating first slurry on the first surface to form a strip of slurry belts which are spaced from each other, wherein the slurry belts can be in a straight shape or in a wave shape, the first slurry is high-resistance slurry containing metal elements such as iron-chromium-aluminum alloy, nickel-chromium alloy, nickel-iron alloy, platinum, tungsten, silver and the like, and has high heating efficiency when electrified, the first slurry can be coated on the insulating layer in a printing mode, and can also be arranged on the first surface in a chemical deposition, physical deposition, spraying, ion sputtering or ion implantation mode to form a heating belt which can heat when electrified, but not limited to the above; in some embodiments, the thickness of the slurry tape may be 50 microns to 100 microns, but not limited thereto, and in other embodiments, different slurry tapes may have different thicknesses, so that heating tapes 12 of different thicknesses may be formed, or multiple groups of slurry tapes, each group having at least one slurry tape therein, the slurry tapes of different groups having different thicknesses; in other embodiments, different slurry strips have different slurry compositions and thus different resistances; in some embodiments, the resistance of the heating tape 12 formed from the slurry tape is about 0.5 to 1.5 Ω; in some embodiments, the first slurry is a mixed slurry of pure silver and silica; (4) forming a hole on the casting sheet to form a first via hole 14, a second via hole 15, a third via hole 16 and a fourth via hole 17, wherein the first via hole 14 penetrates through one ends of the casting sheet and the slurry belt, the second via hole 15 penetrates through the other ends of the casting sheet and the slurry belt, and the third via hole 16 and the fourth via hole 17 avoid the slurry belt to penetrate through the casting sheet; (5) coating a second paste having a low resistivity, such as silver, on the second surface to form a first electrode 21 and a plurality of second electrodes 22 on the second surface, wherein the second paste can be disposed on the second surface by printing, chemical deposition, physical deposition, ion sputtering, ion implantation, or the like, but is not limited thereto; when the second paste is provided, the second paste fills the first via hole 14, the second via hole 15, the third via hole 16 and the fourth via hole 17 to ensure that the first electrode 21 and the second electrode 22 are electrically connected with the heating tape 12, and preferably, the third via hole 16 and the fourth via hole 17 are filled with the second paste to facilitate welding with the first lead 31 and the second lead 32 and ensure welding quality; in some embodiments, the thickness of the first and second electrodes is greater than the thickness of the slurry tape (heating tape 12), and the thickness of the first and second electrodes may be 3 to 25 microns greater than the thickness of the slurry tape (heating tape 12), such as 10 to 20 microns greater, etc.; in some embodiments, the second slurry is a mixed slurry of pure silver and silica, but the silver content is different from that of the first slurry; in some embodiments, after the first paste and the second paste are disposed, a high temperature oxidation process may be performed in alignment, so that an insulating layer may be formed on a surface of an electrode formed of the first paste and the second paste; (5) crimping the cast sheet into a tubular shape to form a tubular body 11, the slurry band being crimped therewith to form a plurality of heating bands 12 distributed along the axial direction of the tubular body 11, each heating band 12 extending in the circumferential direction of the tubular body 11, and when the heater 1 is a central heater for insertion into the aerosol-generating article 1A, the first surface being disposed outwardly to form the outer surface of the tubular body 11 such that the heating band 12 faces and is closer to the aerosol-generating article 1A, and when the heater 1 is a circumferential heater for encircling the aerosol-generating article 1A, the first surface being disposed inwardly to form the inner surface of the tubular body 11 such that the heating band 12 faces and is closer to the aerosol-generating article 1A; (6) welding a first lead 31 to the first electrode 21 exposed to the first surface through the third via hole 16, and welding a second lead 32 to each of the second electrodes 22 exposed to the first surface through the fourth via hole 17; (7) the heater may have an outer diameter of about 2 to 6mm by performing a surface treatment on the first surface, including a surface insulation treatment, a surface anti-sticking treatment, and/or a surface smoothing and leveling treatment, etc.

However, when the heater shown in fig. 6 to 8 is manufactured, the difference from the above manufacturing method is mainly as follows: 1. the third via hole 16 and the fourth via hole 17 do not need to be formed on the casting sheet; 2. the first via hole 14 and the second via hole 14 respectively penetrate the first electrode 21 and the second electrode 22, but do not penetrate the heating tape 12; 3. first, a first electrode 21 and a second electrode 22 are arranged on the second surface, then a first via hole 14 and a second via hole 15 are formed, then a heating belt 12 is arranged on the first surface, and the heating belt 12 is made of slurry or material or the heating belt 12 is directly arranged on the corresponding electrodes through the first via hole 14 and the second via hole 15, so that the heating belt 12 is electrically connected with the corresponding electrodes through the first via hole 14 and the second via hole 15. In other embodiments, a method of making a heater is provided that is slightly different from the heaters shown in fig. 3-5 and 6-8 in that: and the first via hole 14, the second via hole 15, the third via hole 16 and the fourth via hole 17 are provided, wherein the first via hole 14 and the second via hole 15 are used for the heating tape 12 to pass through or fill so as to be electrically connected with the electrode, and the third via hole 16 and the fourth via hole 17 are used for the electrode to pass through or fill so as to be electrically connected with the first lead 31 and the second lead 32, so that the electrical connection points of the first lead 31 and the second lead 32 with the tubular body 11 are located on the first surface.

In other embodiments, the heater 1 may also be prepared by: (1) obtaining a tubular insulating object as a tubular body 11, wherein the tubular body 11 is in a closed ring shape, and no obvious gap is formed on the side wall of the tubular body 11; (2) openings are formed in the side wall of the tubular body 11 for the pins of the heating tape 12 or the pins of the electrodes to pass through; (3) making a heating belt 12 into a non-closed metal ring or metal belt or alloy ring or alloy belt, sleeving the first surface of the tubular body 11 or winding the heating belt on the first surface of the tubular body 11 and fixing the heating belt, or arranging high-resistance slurry containing metal elements such as iron-chromium-aluminum alloy, nickel-chromium alloy, nickel-iron alloy, platinum, tungsten, silver and the like on a strip-shaped casting sheet in a thick film printing, physical deposition, chemical deposition, spraying, ion sputtering, ion implantation or other modes, and winding the casting sheet on the first surface of the tubular body 11 and fixing the casting sheet; (4) making electrodes into metal wires or metal strips or alloy wires or alloy strips, then enabling the electrodes to enter the inside of the tubular body 11, or arranging metal slurry containing gold, silver or copper and the like with low resistivity on a strip-shaped casting sheet in the modes of thick film printing, physical deposition, chemical deposition, spraying, ion sputtering, ion implantation and the like, and enabling the casting sheet to enter the inside of the tubular body 11 and be fixed; (5) the pins of the heating strips 12 are electrically connected with the corresponding electrodes through the corresponding openings, or one ends of the electrodes are electrically connected with the corresponding heating strips 12 through the corresponding openings, and the other ends of the electrodes extend out of the tubular body 11 to be electrically connected with the lead wires.

In other embodiments, the heater 1 may also be prepared by: (1) obtaining a tubular insulating object as a tubular body, wherein the tubular body is in a closed ring shape, and no obvious gap exists on the side wall of the tubular insulating object; (2) openings are formed in the side wall of the tubular body 11 for the pins of the heating tape 12 or the pins of the electrodes to pass through; (3) the heating belt 12 is made into a non-closed metal ring or metal belt or alloy ring or alloy belt, or high-resistance slurry containing metal elements such as iron-chromium-aluminum alloy, nickel-chromium alloy, nickel-iron alloy, platinum, tungsten, silver and the like is arranged on a strip-shaped casting sheet in the modes of thick film printing, physical deposition, chemical deposition, spraying, ion sputtering, ion implantation and the like, one heating belt 12 can be prepared on one casting sheet, and a plurality of heating belts 12 can be prepared on one casting sheet; (4) electrically connecting each heating tape 12 with a corresponding lead: (5) the heating tape 12 in the form of an unclosed metal ring or metal band or alloy ring or alloy band is sleeved on the first surface of the tubular body 11 or wound on the first surface of the tubular body 11 and fixed, and the corresponding lead wires are simultaneously passed through the openings and enter the interior of the tubular body 11, and then the lead wires are passed out from the interior of the tubular body 11 to be electrically connected with the circuit board C2, or the heating tape 12 prepared on a casting sheet is wound on or sleeved on the first surface of the tubular body 11, and the corresponding lead wires are simultaneously passed through the openings and enter the interior of the tubular body 11, and then the lead wires are passed out from the interior of the tubular body 11 to be electrically connected with the circuit board C2. In other implementations, the heating strips 12 may also be arranged directly on the first surface of the tubular body 11 by means of thick film printing, physical deposition, chemical deposition, spraying, ion sputtering or ion implantation, etc.

In an alternative embodiment, the tubular body 11 may have a multi-layer structure, and at least includes a first tubular body and a second tubular body located inside the first tubular body, the first tubular body has a plurality of heating strips 12 spaced apart from each other and distributed along an axial direction of the tubular body 11 on one surface, a plurality of second electrodes 22 connected to the plurality of heating strips 12 in a one-to-one correspondence on the other surface, the other surface further has first electrodes 21 connected to all the heating strips 12, and a difference between the second tubular body and the first tubular body may be mainly embodied in size so that the first tubular body can be sleeved outside the second tubular body.

For producing such a multilayer tubular body, the cast sheet may be first folded (including left-right folding or up-down folding, or partially folded in a certain direction) and then curled into a tubular shape so that the tubular body 11 has at least a two-layer structure. It will be appreciated that if folded once, a two-ply tubular body 11 structure is formed, i.e., a first tubular body and a second tubular body disposed inside the first tubular body, and if folded multiple times, a more multi-ply tubular body is formed. Of course, the heating belt and the electrode have been provided on the casting sheet before the casting sheet is curled into a tube shape.

Alternatively, at least two casting sheets on which the heating belt and the electrode are arranged are stacked one on another and then rolled together into a tubular shape, so that the tubular body 11 has at least a two-layer structure.

Alternatively, a cast sheet on which the heating tape and the electrode are arranged is first rolled into a tubular shape (to constitute a first layer tube), and then another cast sheet on which the heating tape and the electrode are arranged is rolled into a tubular shape along the outer surface of the side wall of the first layer tube to constitute a second layer tube, thereby forming a double-layer tube body, and so on, a more-layered tube body 11 can be formed.

In another alternative embodiment, which can be seen in fig. 9 and 10, the tubular body 11 can have a multilayer structure, and the heating belt 12 and the first and second electrodes 21, 22 are both arranged on the same surface of the cast sheet when prepared, but one side of the heating belt 12 is provided with only the first electrode 21 and the other side is provided with only the second electrode 22, such as: the heating belt 12 and the first electrode 21 are disposed in a left part area of the casting sheet, and the second electrode 22 is disposed in a right part area of the same surface of the casting sheet. The first electrodes 21 extend along the axial direction of the tubular body 11 and are electrically connected to the first ends 121 of all the heating strips 12, and the second end 122 of each heating strip 12 is electrically connected to the corresponding second electrode 22; then winding the cast sheet like a winding bobbin from one end thereof with the heating belt 12 and the second electrode 122 arranged back to back, and if the heater 1 is a central heater 1 for inserting into the interior of the aerosol-generating article 1A, the wound cast sheet with the heating belt 12 facing outwards on the outer surface of the tubular body 11 forming the first surface of the tubular body 11 and the second electrode 22 facing inwards on the inner surface of the tubular body 11 forming the second surface of the tubular body 11, in the embodiment shown in fig. 10 the first electrode 21 may also be arranged facing outwards; if the heater 1 is a circumferential heater 1 disposed at the periphery of the aerosol-generating article 1A, the rolled cast sheet has the heating tape 12 facing inwardly on the inner surface of the tubular body 11, where the inner surface forms a first surface of the tubular body 11, and the second electrode 22 facing outwardly on the outer surface of the tubular body 11, where the outer surface forms a second surface of the tubular body 11; that is, the heating strip 12 is preferentially brought closer to the aerosol-generating article 1A than to the second electrode 22. It is of course not excluded that in other embodiments the folded heating strip 12 and the second electrode 22 face each other, but it is still preferred that in the tubular body 11 the heating strip 12 is closer to the aerosol-generating article 1A than the second electrode 22. In the embodiment shown in fig. 9 and 10, of the two-layered tubular body 11, only one layer is provided with the heating tape 12, and the other layer is mainly provided with the second electrode 22.

In another alternative embodiment, which can be seen in fig. 11, the tubular body 11 can have a multilayer structure, and the heating belt 12 and the first and second electrodes 21, 22 are arranged on the same surface of the cast sheet during the preparation, but opposite sides of the heating belt 12 are provided with both the first and second electrodes 21, 22, such as: the radiation bands are arranged in the middle area of the casting sheet, the left ends of the plurality of radiation bands 12 positioned in the upper end area of the casting sheet are electrically connected with the second electrode 22, and the right ends are electrically connected with the first electrode 11, or the right ends are electrically connected with the first electrode 21 after being mutually connected; the right ends of the plurality of radiation bands 12 located in the lower end region of the casting sheet are electrically connected to the second electrode 22, and the left ends are electrically connected to the first electrode 11, or the left ends are electrically connected to the first electrode 21 after being connected to each other. The left end region and the right end region of the casting sheet are folded along the direction of the back radiation belt 12, the left end and the right end of the casting sheet are in contact after being folded or the left end and the right end of the casting sheet are close to each other after being folded, then the folded casting sheet is curled to form a tubular shape to form a tubular body 11, the surface of the heating belt 12 faces outwards or inwards, and compared with an electrode, the heating belt 12 is close to the aerosol generating product 1A. In the embodiment shown in fig. 11, of the two-layered tubular body 11, only one layer is provided with the heating tape 12, and the other layer is mainly provided with the first electrode 21 and the second electrode 22.

In some embodiments, the tubular body 11 may have multiple layers, each layer of the tubular body 11 has multiple heating bands 12 distributed along the axial direction, each heating band 12 may extend along the circumferential direction of the layer, and the heating bands 12 on two adjacent tubular bodies 11 are arranged in a one-to-one correspondence manner, so that the heating bands 12 located at the same axial height are overlapped with each other in the radial direction, thereby improving the heating efficiency of each heating area (the area corresponding to the heating band 12). However, it is not limited thereto, and in other embodiments, the heating bands 12 on two adjacent layers of the tubular body 11 may be offset, not overlapped or overlapped at all, or only partially overlapped or overlapped.

In some embodiments, as shown in fig. 3, 5, 6, and 8, the spacing between any two adjacent heating strips 12 may be the same, i.e., the heating strips 12 are uniformly distributed on the first surface along the axial direction of the tubular body 11. In some embodiments, reference may be made to fig. 12, wherein the spacing between two adjacent heating bands 12 may be different from the spacing between two adjacent heating bands 12, that is, the heating bands 12 are not uniformly distributed on the first surface along the axial direction of the tubular body 11, and the non-uniform distribution is various, for example, the spacing between two adjacent heating bands 12 is smaller along the axial direction, or the spacing between two adjacent heating bands 12 is larger along the axial direction, or the spacing between the heating bands 12 in the middle region is minimum, etc., which are not listed herein. The uniform and non-uniform distribution of the heating bands 12 is both to meet various temperature control requirements in line with the aerosol-generating article producing aerosol and the user's certain smoking experience.

In some embodiments, as shown in fig. 3, 5, 6 and 8, the two heating bands 12 are equally spaced axially from each other between two adjacent heating bands 12, i.e., the two heating bands 12 are parallel to each other, and the parallel includes a straight line parallel and an arc line parallel.

In some embodiments, the width of the heating bands 12 in the axial direction is greater than the spacing between two adjacent heating bands 12, ensuring that the aerosol-generating article 1A has a larger heated area, enabling the aerosol-generating article 1A to be fully utilised, reducing waste. Specifically, the width of the heating belt 12 in the axial direction is about 1 to 5mm, for example, 3mm, and the distance between two adjacent heating belts 12 is 0.8 to 2.5mm, for example, 1.6 mm.

In some embodiments, the first lead 31 and the second lead 32 are ordinary copper wires, which mainly conduct electricity. In other embodiments, the first lead 31 and the second lead 32 are thermocouple wires, each heating band 12 is provided with a second electrode 22, the second electrode 22 is directly electrically connected with a second lead 32, the first lead 31 is electrically connected with each heating band 12 through the first electrode 21, the first lead 31 and the second lead 32 are made of different materials, for example, the first lead 31 and the second lead 2 are respectively made of two different materials of couple materials such as nickel, nickel-chromium alloy, nickel-silicon alloy, nickel-chromium-copper, constantan, iron-chromium alloy and the like, so that each second lead 32, the corresponding heating band 12 and the first lead 31 constitute a thermocouple, which can be used for detecting the temperature of the heating band 12, and the temperature of each heating band 12 can be separately measured, thereby facilitating the temperature control of each heating band 12.

Referring to fig. 4, 7 and 11, each of the second electrodes 22 includes a first portion 223 and a second portion 224, the first portion 223 extends along a circumferential direction of the tubular body 11 and is electrically connected to the second end 122 of the heating tape 12, the second portion 224 extends along an axial direction of the tubular body 11 and is electrically connected to the second lead 22, and in order to fully utilize a space of the second surface, the first portion 223 may be vertically connected to the second portion 224.

To improve the efficiency of heat transfer between the heating band 12 and the aerosol-generating article 1A, the heating band 12 may be brought as close as possible to the aerosol-generating article 1A, and the distance between the heating band 12 and the aerosol-generating article 1A may be shortened, for example by having the first surface facing the direction of the aerosol-generating article 1A. Of course, it is also possible to have the heating strip 12 relatively far away from the aerosol-generating article 1A for other purposes, such as having the second surface disposed towards the direction of the aerosol-generating article 1A and the first surface disposed away from the direction of the aerosol-generating article 1A, etc.

In particular, in an embodiment, reference may be made to fig. 16, the tubular body 11 has a receiving cavity therein for receiving at least part of the aerosol-generating article 1A, such that the tubular body 11 is for transmitting energy from the circumference of the aerosol-generating article 1A to cause the aerosol-generating article 1A to heat inwardly from its circumference. At this time, the first surface provided with the heating tape is the inner surface of the tubular body 11.

Whereas in the embodiment shown in figures 1-8 the tubular body 11 is for insertion into the interior of the aerosol-generating article 1A for internally generating heat from the aerosol-generating article 1A to produce an aerosol. At this time, the first surface provided with the heating tape 12 is the outer surface of the tubular body 11.

Referring to fig. 13, the present application further provides an aerosol generating device, which has a very simple structure, and includes a heater 1 and a main body 1D, the heater 1 and the main body 1D are combined to form the aerosol generating device, the heater 1 is fixed on the top end of the main body 1D and extends out of the aerosol generating device along an axial direction, so that the heater is at least partially exposed outside the main body 1D and is located outside.

In particular, in an embodiment, referring to fig. 13, the heater 1 is adapted to be inserted into an aerosol-generating article 1A, and by inserting the heater 1 into the aerosol-generating article 1A, the aerosol-generating article 1A can be secured to an aerosol-generating device, and the periphery of the aerosol-generating article 1A is completely exposed without being surrounded by the aerosol-generating device, i.e. the periphery of the receiving area for receiving the aerosol-generating article is open, in which case the first surface may be the outer surface of the tubular body 11.

In another embodiment, the interior of the tubular body 11 has a receiving cavity for receiving at least part of the aerosol-generating article 1A, the securing of the aerosol-generating article 1A to the aerosol-generating device being achieved by inserting the aerosol-generating article 1A into the receiving cavity, in which case the first surface may be an interior surface of the tubular body 11 and the second surface is exposed to air.

In another embodiment, the body includes a stand and a housing movably coupled to the stand between a first position and a second position, i.e., the housing is movable relative to the stand while the stand remains stationary, e.g., the housing slides up and down a surface of the stand, etc.; or the bracket is movably connected with the shell between the first position and the second position, namely the bracket can move relative to the shell when the shell is kept still, such as the bracket extends and retracts in the shell, or moves forwards and backwards, and the like. The heater is secured to the holder, and the housing forms a fixed-boundary receiving region (e.g. a receiving cavity) around the heater to receive and define at least part of the aerosol-generating article when the housing or holder is in the first position, such that the aerosol-generating article can be secured to the aerosol-generating device by both connection to the heater and connection to the housing, while the presence of the housing avoids over-ironing the surface of the aerosol-generating article. When the housing or holder is in the second position, at least part of the heater projects out of the aerosol-generating device so that part of the periphery of the region in which the aerosol-generating article is inserted by the heater may be exposed without limitation by the housing, i.e. the peripheral region of the receiving region is not well defined. Or the shell and the bracket move relatively, so that the shell has a first state and a second state, wherein the first state is that the heater is contained in the shell, and the second state is that the heater is exposed out of the shell.

When the heater 1 is used for insertion into an aerosol-generating article 1A, the heater 1 is generally in the shape of a pin or needle, which in turn is advantageous for insertion into the aerosol-generating article 1A. Meanwhile, the heater 1 may have a length of about 12 to 19 mm and a diameter of 2.0 to 2.6 mm. In order to increase the rigidity of the heater, referring to fig. 2, the heater further comprises a rod 13, wherein the rod 13 extends along the axial direction of the tubular body 11, is at least partially located inside the tubular body 11, and can support the tubular body 11 from inside to outside in the radial direction. The core 13 may be made of ceramic so that the cast sheet from which the tubular body 11 is made may be crimped along the surface of the core 13 and then fixed to the core 13 by sintering, and the core 13 may be hollow in order to reduce energy consumption and increase heat dissipation speed; it will of course be appreciated that the core 13 may also be made of a metal material, and when combined with the tubular body 11, the surface thereof is insulated, or the second surface of the tubular body 11 is insulated, so as to prevent current flow between the electrodes of the second surface and the metal core 13, and that with the metal core 13, the metal material having a higher thermal conductivity and a lower thermal capacity may be used to increase the rate of temperature rise in the region of the core 13 corresponding to a certain heating zone or zones 12 when the certain heating zone or zones 12 release energy and to reduce the energy consumption for temperature rise in the region of the core corresponding to the certain heating zone or zones, so that the region of the aerosol-generating article 1A corresponding to the certain heating zone or zones 12 can rapidly generate aerosol, and at the same time, when suction is stopped, or when the heating zone 12 stops sending energy, the metal core 13 can rapidly cool the aerosol-generating article 1A in the corresponding region due to the faster rate of heat dissipation, in order to avoid further aerosol generation, which leads to waste, the metal rod 13 may, of course, also be hollow in order to ensure a faster temperature rise and fall speed, and at the same time to save energy.

Referring to fig. 2, the core 13 further includes a guide portion 131 and a base 132. The guide 131 is arranged at the top in the axial direction of the heater 1, the guide 131 being used to guide and facilitate insertion of the heater 1 into the aerosol-generating article 1A, so that the guide 131 is located outside the tubular body 11, the radius of the connection surface of the guide 131 with the tubular body 11 being equal to the outer diameter of the tubular body 11, thereby avoiding a step between the guide 131 and the tubular body 11. The guide 133 may have a pointed or truncated cone shape, and is not particularly limited herein. The base 132 is provided at the bottom in the axial direction of the tubular body 11, opposite to the guide portion 131. The base 132 serves to fix the heater 1 in the aerosol-generating device and functions as a flange. In some embodiments, the core 13 has a gap with the tubular body 11, and transverse, longitudinal or spiral ribs may be provided on the core, which are raised by radially abutting and supporting the wall of the tubular body 11, so as to reduce the overall weight of the heater 1, thereby reducing the energy consumption and at the same time increasing the heat dissipation and cooling of the heater 1.

In some embodiments, the base 132 has air inlet holes formed therein, the air inlet holes communicating between the outside and the interior of the tubular body 11, and cold air can enter the interior of the tubular body 11 through the air inlet holes to cool the tubular body 11 from inside, so as to cool the tubular body 11 when the suction is stopped or the heating belt 12 stops releasing energy, so that the aerosol-generating article 1A stops generating aerosol quickly. Alternatively, the receiving chamber of the aerosol-generating device may have a cold air inlet for the entry of cold air to air cool the tubular body 11 from outside.

According to the heater, the aerosol generating device and the aerosol generating system, the plurality of heating belts are arranged at intervals and are distributed on the tubular body along the axial direction, so that the heating track is simpler and the manufacture is convenient; meanwhile, the heating strips are arranged on the first surface of the tubular body, and the electrodes electrically connected with each heating strip are arranged on the second surface of the tubular body, so that the heating strips are independently electrically controlled, the circuit distribution structure can be simplified, and the volume of the heater is reduced.

It should be noted that the description and drawings of the present application illustrate preferred embodiments of the present application, but are not limited to the embodiments described in the present application, and further, those skilled in the art can make modifications or changes according to the above description, and all such modifications and changes should fall within the scope of the claims appended to the present application.

Claims (20)

1. A heater for an aerosol-generating article to generate an aerosol, comprising:

a tubular body made of a flexible insulating material, the tubular body having a first surface and a second surface, the first surface being disposed proximate to the aerosol-generating article;

at least one heating tape disposed on the first surface for heating the aerosol-generating article; the electrodes corresponding to the heating strips are arranged on the second surface, and the heating strips are electrically connected with the electrodes corresponding to the heating strips.

2. The heater of claim 1, wherein the first surface is provided with a plurality of heating strips spaced from each other in an axial direction of the tubular body, and at least one of the heating strips extends in a circumferential direction of the first surface.

3. The heater according to claim 2, wherein the electrode includes a first electrode extending in an axial direction of the tubular body and electrically connected to one ends of the plurality of heating strips at the same time, and a plurality of second electrodes electrically connected to the other ends of the heating strips corresponding thereto, respectively.

4. The heater of claim 2, wherein a plurality of the heating strips are uniformly distributed in the axial direction of the tubular body, or at least a part of the plurality of heating strips are uniformly distributed in the axial direction of the tubular body.

5. A heater as claimed in claim 3 wherein said heating band is configured as a non-closed loop having first and second ends respectively at opposite ends extending circumferentially of said tubular body and third and fourth ends respectively at opposite ends extending axially of said tubular body;

the first end is electrically connected with the first electrode, and the second end is electrically connected with the second electrode;

the distance between the first end and the second end is greater than the distance between the third end and the fourth end.

6. The heater of claim 1, wherein the electrodes comprise a first electrode, a second electrode; the heater further comprises a first lead and a second lead;

the heating belt is provided with a first end and a second end which are oppositely arranged, the first end is electrically connected with the first electrode, the first lead is electrically connected with the first electrode through welding, the second end is electrically connected with the second electrode, and the second lead is electrically connected with the second electrode through welding.

7. The heater of claim 6, further comprising a first via and a second via on said heater;

the first via hole is arranged at one end of the heating belt and penetrates through the pipe wall of the tubular body, and the second via hole is arranged at the other end of the heating belt and penetrates through the pipe wall of the tubular body;

one end of the first electrode or the heating belt penetrates or fills the first via hole, so that the first electrode is electrically connected with one end of the heating belt;

the other end of the second electrode or the heating tape penetrates or fills the second via hole, so that the second electrode is electrically connected with the other end of the heating tape.

8. The heater of claim 6, further comprising a third via and a fourth via on said heater;

the third via hole is arranged at one end of the first electrode and penetrates through the tube wall of the tubular body, and the fourth via hole is arranged at one end of the second electrode and penetrates through the tube wall of the tubular body;

the first electrode fills or passes through the third via hole such that the first electrode is electrically connected with the first lead at the third via hole, and the second electrode fills or passes through the fourth via hole such that the second electrode is electrically connected with the second lead at the fourth via hole.

9. The heater of claim 6, wherein said first lead and said second lead are thermocouple wires made of different materials.

10. The heater of claim 1, wherein the first surface has an anti-stick coating disposed thereon.

11. The heater of claim 1 further comprising a wick located inside the tubular body with a gap therebetween.

12. The heater of claim 1, wherein said heating tape is applied to said first surface by thick film printing, physical deposition, chemical deposition, spray coating, ion sputtering, or ion implantation; and/or the electrode is arranged on the second surface by means of thick film printing, physical deposition, chemical deposition, spraying, ion sputtering or ion implantation.

13. The heater according to claim 1, wherein the tubular body has a multilayer structure, an outermost surface of the multilayer structure being the first surface, or an innermost surface of the multilayer structure being the first surface.

14. The heater according to claim 1, wherein said tubular body is a ceramic cast sheet having said heating tape and said electrodes disposed on a same development surface, and wound to form said first and second opposite surfaces.

15. The heater according to claim 1, wherein said tubular body is a cast ceramic sheet, and said heating belt and said electrode are provided on opposite surfaces of said cast ceramic sheet, respectively.

16. The heater of claim 1, wherein the tubular body has a wall thickness of no more than 0.4 mm; alternatively, the thickness of the electrode is between 53 and 125 μm; or the resistance of each heating belt is between 0.5 and 1.5 omega.

17. An aerosol-generating device comprising a heater as claimed in any one of claims 1 to 16.

18. An aerosol-generating system comprising the aerosol-generating device of claim 17, further comprising an aerosol-generating article; the aerosol-generating device comprises a receiving region for receiving at least part of the aerosol-generating article;

in the receiving zone, the aerosol-generating article is disposed at a periphery of the heater and adjacent to the first surface; or

In the receiving zone, the aerosol-generating article is disposed inside the heater and adjacent to the first surface.

19. The aerosol-generating system of claim 18, wherein the receiving region is located at a top of the aerosol-generating device and the receiving region comprises only the aerosol-generating article and the heater.

20. The aerosol-generating system of claim 18, wherein the aerosol-generating device comprises a housing and a holder for securing the heater;

the shell and the bracket move relatively to each other and have a first state and a second state;

wherein the first state is that the heater is housed inside the case, and the second state is that the heater is exposed outside the case.

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