CN217523960U - Resistance heater for aerosol-generating device and aerosol-generating device - Google Patents

Abstract

The application provides a resistance heater for an aerosol-generating device and an aerosol-generating device. The aerosol-generating device comprises: a chamber for receiving an aerosol-generating article; a resistive heater extending at least partially within the chamber and configured to be inserted into the aerosol-generating article for heating; the resistance heater includes: a conductive ceramic body configured to extend along a length direction of the resistive heater; first and second conductive elements arranged at intervals in a circumferential direction of the conductive ceramic body; wherein the first conductive element and the second conductive element extend along a length direction of the conductive ceramic body; a first lead and a second lead; the first lead is connected with the first conductive element, the second lead is connected with the second conductive element, and the first lead and the second lead are used for supplying power to the conductive ceramic body. The resistance heater of the aerosol generating device has high strength and simple process; and the current distribution on the conductive ceramic body is more uniform, and the aerosol formed by atomization has better consistency.

Description

Resistance heater for aerosol-generating device and aerosol-generating device

Technical Field

The utility model relates to an electron atomization technical field especially relates to a resistance heater and aerial fog generation device for aerial fog generation device.

Background

The aerosol generating device is more and more attracted by people because of the advantages of safe, convenient, healthy and environment-friendly use; for example, the electronic cigarette is not heated and burned, which is also called as a heating and non-burning aerosol generating device.

Currently, aerosol-generating devices typically include a resistive heater and a power supply assembly. Wherein the resistive heater is for heating the aerosol-generating article when energised; the power supply assembly is used for supplying power to the resistance heater. Specifically, referring to fig. 1, fig. 1 is a schematic structural diagram of a conventional resistance heater; the resistance heater includes a conductive ceramic body 11 and an electrode lead 12 connected to the conductive ceramic body 11; the conductive ceramic body 11 is generally slotted along the middle thereof to form a U-shaped structure; the electrode leads 12 are connected to both left and right ends of the conductive ceramic body 11, respectively, to form a current loop.

However, the conventional resistance heater has low strength and complicated process.

SUMMERY OF THE UTILITY MODEL

The application provides a resistance heater and aerial fog generating device for aerial fog generating device aims at solving current resistance heater, and its electrically conductive ceramic body's intensity is lower, the comparatively complicated problem of technology.

In order to solve the above technical problem, the first technical solution adopted by the present application is: an aerosol-generating device is provided. The aerosol-generating device comprises:

a chamber for receiving an aerosol-generating article;

a resistive heater extending at least partially within the chamber and configured to be inserted into an aerosol-generating article for heating; the resistance heater includes:

a conductive ceramic body configured to extend along a length direction of the resistive heater;

first and second conductive elements arranged at intervals along a circumferential direction of the conductive ceramic body; wherein the first and second conductive elements extend along a length of the conductive ceramic body;

a first lead and a second lead; wherein the first lead is connected to the first conductive element, the second lead is connected to the second conductive element, and the first lead and the second lead are used to supply power to the conductive ceramic body.

After the resistance heater is electrified, the conductive ceramic body forms annular current along the circumferential direction of the conductive ceramic body.

Wherein the conductive ceramic body is configured in a rod shape, a plate shape, a pin shape, or a needle shape.

Wherein the first conductive element and the second conductive element are symmetrically arranged along a radial direction of the conductive ceramic body.

Wherein the conductive ceramic body includes a tapered portion and an extension portion connected to the tapered portion.

Wherein the first conductive element and/or the second conductive element extend from an end of the extension portion connected to the tapered portion to an end of the extension portion facing away from the tapered portion.

Wherein the resistive heater further comprises a first electrode and/or a second electrode, the first lead being connected to the first conductive element through the first electrode; the second lead is connected to the second conductive element through the second electrode.

Wherein the first conductive element and/or the second conductive element is a conductive track or a conductive coating formed on the surface of the conductive ceramic body.

In order to solve the above technical problem, the second technical solution adopted by the present application is: a resistive heater for an aerosol-generating device is provided. The resistive heater for an aerosol-generating device comprises:

a conductive ceramic body configured to extend along a length direction of the resistive heater;

first and second conductive elements arranged at intervals along a circumferential direction of the conductive ceramic body; wherein the first and second conductive elements extend along a length of the conductive ceramic body;

a first lead and a second lead; wherein the first lead is connected to the first conductive element, the second lead is connected to the second conductive element, and the first lead and the second lead are used to supply power to the conductive ceramic body.

In order to solve the above technical problem, the third technical solution adopted by the present application is: an aerosol-generating device is provided. The aerosol-generating device comprises:

a chamber for receiving an aerosol-generating article;

a resistive heater, comprising:

a conductive ceramic body configured to extend along a length of the resistive heater, the conductive ceramic body having a tubular shape, the tubular conductive ceramic body surrounding and defining the chamber;

first and second conductive elements arranged at intervals along a circumferential direction of the conductive ceramic body; wherein the first and second conductive elements extend along a length of the conductive ceramic body;

a first lead connected to the first conductive element and a second lead connected to the second conductive element, the first and second leads for providing power to the conductive ceramic body.

In order to solve the above technical problem, a fourth technical solution adopted by the present application is: a resistive heater is provided. The resistance heater includes:

a conductive ceramic body configured to extend along a length of the resistive heater, the conductive ceramic body having a tubular shape, the tubular conductive ceramic body surrounding and defining the chamber;

first and second conductive elements arranged at intervals along a circumferential direction of the conductive ceramic body; wherein the first and second conductive elements extend along a length of the conductive ceramic body;

a first lead connected to the first conductive element and a second lead connected to the second conductive element, the first and second leads for powering the conductive ceramic body.

In order to solve the above technical problem, a fifth technical solution adopted by the present application is: an aerosol-generating device is provided. The aerosol-generating device comprises:

a chamber for receiving an aerosol-generating article;

a resistive heater, comprising:

a conductive ceramic body configured to extend along a length of the resistive heater, the conductive ceramic body having a tubular shape, the tubular conductive ceramic body surrounding and defining the chamber;

first and second conductive elements arranged at intervals along a length direction of the conductive ceramic body; wherein the first conductive element and the second conductive element extend in a circumferential direction of the conductive ceramic body;

a first lead connected to the first conductive element and a second lead connected to the second conductive element, the first and second leads for providing power to the conductive ceramic body.

In order to solve the above technical problem, a sixth technical solution adopted in the present application is: there is provided a resistance heater including:

a conductive ceramic body configured to extend along a length of the resistive heater, the conductive ceramic body having a tubular shape, the tubular conductive ceramic body surrounding and defining the chamber;

first and second conductive elements arranged at intervals along a length direction of the conductive ceramic body; wherein the first and second conductive elements extend in a circumferential direction of the conductive ceramic body;

a first lead connected to the first conductive element and a second lead connected to the second conductive element, the first and second leads for powering the conductive ceramic body.

The present embodiments provide a resistive heater for an aerosol-generating device and an aerosol-generating device, the aerosol-generating device being configured with a chamber to receive an aerosol-generating article; simultaneously, by providing the resistance heater, the resistance heater comprises a conductive ceramic body, first and second conductive elements arranged at intervals along the circumferential direction of the conductive ceramic body, a first lead and a second lead, and the first and second conductive elements extend along the length direction of the conductive ceramic body, the first lead is connected with the first conductive element, the second lead is connected with the second conductive element, so that when the first and second leads are connected with a power supply assembly respectively, a voltage is applied between the first and second conductive elements, thereby forming a circular current on the conductive ceramic body along the circumferential direction thereof to heat the aerosol generating product; the first conductive elements and the second conductive elements of the resistance heater for the aerosol generating device are arranged at intervals along the circumferential direction of the conductive ceramic body and form annular current along the circumferential direction of the conductive ceramic body, so that a through groove does not need to be formed in the conductive ceramic body along the radial direction of the conductive ceramic body, the strength of the conductive ceramic body is greatly improved, and the process is simple; meanwhile, the problems that the electric current distribution on the conductive ceramic body is uneven due to the unreasonable grooving position of the conductive ceramic body, the aerosol formed by atomization is poor in consistency and poor in taste can be solved, so that the electric current distribution on the conductive ceramic body of the resistance heater for the aerosol generating device is uniform, and the aerosol formed by atomization is good in consistency and taste.

Drawings

Figure 1 is a schematic diagram of a prior art resistive heater for use in an aerosol-generating device;

fig. 2 is a schematic structural view of an aerosol-generating device according to an embodiment of the present application;

figure 3 is a schematic structural view of a first embodiment of a resistive heater for an aerosol-generating device as provided herein;

figure 4 is a schematic structural view of a second embodiment of a resistive heater for an aerosol-generating device as provided herein;

figure 5 is a schematic structural view of a third embodiment of a resistive heater for an aerosol-generating device as provided herein;

figure 6 is a schematic structural view of a fourth embodiment of a resistive heater for an aerosol-generating device according to the present application;

figure 7 is a schematic structural view of a fifth embodiment of a resistive heater for an aerosol-generating device according to the present application.

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 obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to 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 indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. In the embodiment of the present application, all the directional indicators (such as the upper, lower, left, right, front, and rear … …) are only used to explain the relative position relationship between the components in a specific posture (as shown in the drawing), the motion situation, and the like, and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. 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.

The present application will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an aerosol-generating device according to an embodiment of the present disclosure; in this embodiment, there is provided an aerosol-generating device configured to include: resistive heater 10, power supply assembly 20, circuitry 30, and chambers.

Wherein the aerosol-generating article a is removably received within the chamber. The aerosol-generating article a preferably employs a tobacco-containing material which releases volatile compounds from a substrate when heated; or it may be a non-tobacco material that is suitable for electrically heated smoking after heating. The aerosol-generating article a preferably employs a solid substrate, which may comprise one or more of a powder, granules, shreds of pieces, 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 one embodiment, the resistance heater 10 is in the form of a solid needle, plate, or pin. At least part of the resistive heater 10 extends into the chamber and when the aerosol-generating article a is received in the chamber, the heat-generating component 10 is inserted into the aerosol-generating article a to heat it, causing the aerosol-generating article a to release a plurality of volatile compounds, and these volatile compounds are formed by the heating process alone. Of course, to save material, the resistance heater 10 may also be hollow needle-shaped or plate-shaped. The power supply assembly 20 is connected to the resistance heater 10 and supplies power to the resistance heater 10; the circuit 30 is used to conduct current between the power supply assembly 20 and the resistive heater 10. The resistance heater 10 may be a resistance heater 10a/10b provided in the following first and second embodiments.

Of course, in other embodiments, the resistive heater 10 may also be tubular. In this embodiment, the chamber is specifically defined by the hollow structure of the resistance heater 10, and the aerosol-generating article a is removably received within the hollow chamber of the tubular resistance heater 10 for circumferential heating thereof by the resistance heater 10. The resistance heater 10 may be a resistance heater 10c/10d/10e provided in the following third to fifth embodiments.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a first embodiment of a resistive heater for an aerosol-generating device according to the present disclosure; in a first embodiment, a first resistive heater 10a for an aerosol-generating device is provided, the resistive heater 10a for an aerosol-generating device comprising a conductive ceramic body 11a, a first conductive element 12a, a second conductive element 13a, a first lead 14 and a second lead 15.

Wherein the electrically conductive ceramic body 11a is in the form of a rod, plate, pin or needle and is configured to extend along the length of the resistive heater 10a for insertion into the aerosol-generating article a for heating, thereby heating the aerosol-generating article a upon energization to cause the aerosol-generating article a to release a plurality of volatile compounds. Specifically, the conductive ceramic body 11a includes an axially connected extension portion 111 and a tapered portion 112; the extension 111 is for generating heat when energised to heat the aerosol-generating article a, the tapered portion 112 may be integrally formed with the extension 111 and during insertion of the aerosol-generating article a the tapered portion 112 of the electrically conductive ceramic body 11a is inserted into the aerosol-generating article a first; and to facilitate insertion of the conductive ceramic body 11a into the aerosol-generating article a, ensuring smooth, safe, and anti-adhesive article residue insertion, the radial dimension of the tapered portion 112 of the conductive ceramic body 11a may be tapered in a direction away from the extension 111. Specifically, the tapered portion 112 of the conductive ceramic body 11a may have a conical shape or a rounded transition shape.

The conductive ceramic body 11a may be made of conductive ceramics, i.e., ceramics that generate high temperature by heat generation of current or are conductive without melting or oxidation at high temperature, such as tin oxide, zinc oxide, barium titanate, zirconium oxide, and β -alumina. In the specific embodiment, the material formula can be adjusted and a suitable forming process can be selected to obtain the conductive ceramic material with the required resistance value according to the requirements of the conductive ceramic body 11a such as design specification, shape, and heating performance. In one embodiment, the electrical resistance between the first and second ends of the conductive ceramic body 11a along its length is 0.5-3 ohms. The conductive ceramic body 11a may have a resistivity of 10 ^-3 -10 ^-4 Ω·m。

Referring to fig. 3, the first conductive element 12a and the second conductive element 13a are disposed on the outer surface of the extension portion 111 at intervals along the circumferential direction of the conductive ceramic body 11a, and are electrically connected to the extension portion 111 respectively. Of course, it is understood that when the conductive ceramic body 11a is configured in a plate shape, the first conductive element 12a and the second conductive element 13a are disposed on both sides of the conductive ceramic body 11a in the thickness direction of the conductive ceramic body 11 a. Specifically, the first conductive element 12a and the second conductive element 13a may extend in a length direction of the conductive ceramic body 11a and have a bar shape or a sheet shape. Further, as shown in fig. 3, the first conductive element 12a and the second conductive element 13a are symmetrically arranged in a radial direction of the conductive ceramic body 11a, that is, the first conductive element 12a and the second conductive element 13a are symmetrically disposed on both sides of a central axis of the conductive ceramic body 11 a. Of course, the first conductive element 12a and the second conductive element 13a may be symmetric or have an angle smaller than 180 °.

In a specific embodiment, the first conductive element 12a and the second conductive element 13a may be used as electrodes for supplying power to the conductive ceramic body 11a, the first lead 14 is electrically connected to the first conductive element 12a, and the second lead 15 is electrically connected to the second conductive element 13a, so that when the first lead 14 and the second lead 15 are electrically connected to the positive electrode and the negative electrode of the power module 20, respectively, power is supplied to the conductive ceramic body 11a through the first conductive element 12a and the second conductive element 13a, so that the conductive ceramic body 11a forms a circular current in a circumferential direction thereof.

Compared with the scheme of directly connecting the first lead 14 and the second lead 15 with the conductive ceramic body 11a, the problem that the first lead 14 and/or the second lead 15 fall off can be effectively reduced, the contact resistance between the first lead 14 and/or the second lead 15 and the conductive ceramic body 11a is far smaller than the resistance of the conductive ceramic body 11a, the heat-generating point of the conductive ceramic body 11a is prevented from being gathered at the connecting position of the first lead 14 and the conductive ceramic body 11a, and the whole heat-generating effect of the conductive ceramic body 11a cannot be achieved.

Specifically, the first conductive element 12a and/or the second conductive element 13a are conductive coatings or conductive traces; the first conductive element 12a and/or the second conductive element 13a may be formed on the outer surface of the extension portion 111 by printing, spraying, or the like. In particular embodiments, the first conductive element 12a and/or the second conductive element 13a may be made of stainless steel, iron-aluminum alloy, iron-nickel alloy, copper, aluminum, or other materials with good electrical conductivity and low resistivity.

In a specific embodiment, in particular, the first conductive element 12a and/or the second conductive element 13a may extend from an end of the extension portion 111 connected to the tapered portion 112 to an end of the extension portion 111 facing away from the tapered portion 112. That is, the axial lengths of the first conductive element 12a and the second conductive element 13a are the same as the axial length of the extension portion 111 of the conductive ceramic body 11a, so that when a voltage is applied between the first conductive element 12a and the second conductive element 13a, a current is formed on the entire extension portion 111 to perform heating, thereby effectively increasing the heat generation range of the extension portion 111 and improving the atomization efficiency of the aerosol-generating article a. Of course, in other embodiments, the axial lengths of the first conductive element 12a and the second conductive element 13a can be selectively set according to the preset heat generation range of the extension portion 111 of the conductive ceramic body 11a to meet different environmental requirements. For example, if the predetermined heat generation range of the extension portion 111 is a region of the extension portion 111 departing from the tapered portion 112, the first conductive element 12a and the second conductive element 13a may be made to cover the region of the extension portion 111 departing from the tapered portion 112 along the longitudinal direction of the conductive ceramic body 11 a.

Specifically, the first lead 14 is a positive lead, and the second lead 15 is a negative lead, which are respectively connected to the positive and negative electrodes of the power module 20 to supply electric current, thereby performing a heating operation. Of course, the first lead 14 may also be a negative lead, and the second lead 15 may be a positive lead. The material of the first lead 14 and/or the second lead 15 is generally selected from materials with relatively high conductivity, such as nickel chromium, nickel silicon, silver, and the like, and other materials may be selected according to the actual design scheme. The first lead 14 and/or the second lead 15 may be connected to the corresponding conductive element, in particular by means of soldering.

Specifically, the first lead 14 and the second lead 15 have different materials to form a thermocouple, and measure the temperature of the conductive ceramic body 11a by a thermoelectric effect so as to control the temperature of the conductive ceramic body 11 a. When the lead is made of conductive materials of different materials, the temperature of the conductive ceramic body 11a can be measured through the thermoelectric effect, so that the temperature measurement function is realized.

Further, in a particular embodiment, the resistive heater 10 for an aerosol-generating device further comprises a protective layer (not shown) covering at least the first and second conductive elements 12a, 13a for protecting the first and second conductive elements 12a, 13a. Specifically, the protective layer may be formed by magnetron sputtering an insulating coating such as alumina or zirconia, or by firing a glaze or depositing an insulating oxide. And the protective layer can wrap the surface of the whole conductive ceramic body 11a, which not only facilitates processing, but also can protect the surface of the conductive ceramic body 11a at the same time.

The present embodiment provides a resistive heater 10a for an aerosol-generating device by providing a conductive ceramic body 11a to heat an aerosol-generating article a when energised; meanwhile, by arranging the first and second conductive elements 12a and 13a, the first and second leads 14 and 15 at intervals along the circumferential direction of the conductive ceramic body 11a and extending the first and second conductive elements 12a and 13a in the longitudinal direction of the conductive ceramic body 11a, the first lead 14 is connected to the first conductive element 12a, and the second lead 15 is connected to the second conductive element 13a, so that when the first and second leads 14 and 15 are connected to the power supply component 20, respectively, a voltage is applied between the first and second conductive elements 12a and 13a, thereby forming a circular current flow on the conductive ceramic body 11a in the circumferential direction thereof to heat the aerosol-generating article a; because the first conductive elements 12a and the second conductive elements 13a of the resistance heater 10a for the aerosol generating device are arranged at intervals along the circumferential direction of the conductive ceramic body 11a and form the annular current along the circumferential direction of the conductive ceramic body 11a, the conductive ceramic body 11a does not need to be provided with a through groove along the radial direction thereof, the strength of the conductive ceramic body 11a is greatly improved, and the process is simple; meanwhile, for the conductive ceramic body 11a with the same resistance, length and outer diameter, the conductive ceramic body 11a provided by the embodiment is larger in area of the cross section compared with the conductive ceramic body 11 with a hole or a slot in the middle, so that the resistivity range of the conductive ceramic body 11a is greatly improved, the production difficulty of the conductive ceramic body 11a is reduced, and the resistance heater 10a for the aerosol generating device is simple in structure and convenient for mass production. In addition, the problems that the aerosol formed by atomization is poor in consistency and poor in taste due to uneven current distribution on the conductive ceramic body 11a caused by unreasonable grooving positions of the conductive ceramic body 11a can be solved, so that the current distribution on the conductive ceramic body 11a of the resistance heater 10a for the aerosol generating device is uniform, and the aerosol formed by atomization is good in consistency and taste. In addition, the heating range of the conductive ceramic body 11a can be controlled by adjusting the axial length ranges of the first conductive element 12a and the second conductive element 13a, so that the resistance heater 10a for the aerosol generating device is suitable for different environmental requirements, and the application range of the resistance heater 10a for the aerosol generating device is greatly improved.

In a second embodiment, referring to fig. 4, fig. 4 is a schematic structural view of a second embodiment of a resistive heater for an aerosol-generating device provided herein; providing a second resistive heater 10b for an aerosol-generating device, the resistive heater 10b for an aerosol-generating device being different from the first resistive heater 10a for an aerosol-generating device in that the resistive heater 10b for an aerosol-generating device further comprises a first electrode 16 and/or a second electrode 17; the following description will be given taking as an example that the resistance heater 10b of the aerosol-generating device includes the first electrode 16 and the second electrode 17.

The first electrode 16 is disposed on the first conductive element 12a and electrically connected to the first conductive element 12a, and the first lead 14 is specifically connected to the first conductive element 12a through the first electrode 16; the second electrode 17 is disposed on the second conductive element 13a and electrically connected to the second conductive element 13a, and the second lead 15 is connected to the second conductive element 13a through the second electrode 17. This can further enhance the connection strength between the first and second leads 14 and 15 and the first and second conductive elements 12a and 13a, and reduce the occurrence of the problem of the first and/or second leads 14 and 15 falling off. Specifically, the first electrode 16 and/or the second electrode 17 may be a conductive paste or slurry with high conductivity. The first electrode 16 and/or the second electrode 17 may be connected by silver paste sintering or other conductive paste sintering, or connected to the corresponding electrode by welding, crimping, or the like.

In a particular embodiment, the first electrode 16 and/or the second electrode 17 is located at an end of the extension 111 facing away from the taper 112 to facilitate routing of the first lead 14 and/or the second lead 15, avoiding problems with the resistive heater 10b for the aerosol-generating device damaging the first lead 14 and/or the second lead 15 or affecting the strength of the connection between the first lead 14 and/or the second lead 15 and the respective electrode during insertion of the aerosol-generating article a.

In a third embodiment, referring to fig. 5, fig. 5 is a schematic structural diagram of a third embodiment of a resistive heater for an aerosol-generating device provided by the present application. A third resistive heater 10c for an aerosol-generating device is provided, the resistive heater 10c for an aerosol-generating device being different from the resistive heater 10a for an aerosol-generating device provided in the first embodiment described above in that the electrically conductive ceramic body 11b of the resistive heater 10c for an aerosol-generating device is tubular, the tubular electrically conductive ceramic body 11b surrounding and defining the chamber. The aerosol-generating article a is specifically housed within the tubular conductive ceramic body 11b to heat and atomize the aerosol-generating article a housed therein when the conductive ceramic body 11b is energized. Specifically, as shown in fig. 5, the conductive ceramic body 11b does not include the tapered portion 112.

In a fourth embodiment, referring to fig. 6, fig. 6 is a schematic structural diagram of a resistive heater for an aerosol-generating device according to the fourth embodiment of the present application. A fourth resistive heater 10d for an aerosol-generating device is provided, the resistive heater 10d for an aerosol-generating device being different from the resistive heater 10b for an aerosol-generating device provided in the second embodiment described above in that the electrically conductive ceramic body 11b of the resistive heater 10d for an aerosol-generating device is tubular, the tubular electrically conductive ceramic body 11b surrounding and defining the chamber. The aerosol-generating product a is housed in particular within the tubular electrically conductive ceramic body 11b, so as to heat and atomise the aerosol-generating product a housed therein when the electrically conductive ceramic body 11b is energised. Specifically, as shown in fig. 6, the conductive ceramic body 11b does not include the tapered portion 112.

In a fifth embodiment, referring to fig. 7, fig. 7 is a schematic structural diagram of a resistance heater for an aerosol-generating device according to the fifth embodiment of the present application. A fifth resistive heater 10e for an aerosol-generating device is provided, the resistive heater 10e for an aerosol-generating device comprising a conductive ceramic body 11b, a first conductive element 12b, a second conductive element 13b, a first lead 14 and a second lead 15.

Wherein the conductive ceramic body 11b is tubular, the tubular conductive ceramic body 11b surrounds and defines a chamber to receive the aerosol-generating article a and to heat and atomize the aerosol-generating article a received therein upon energization to release a plurality of volatile compounds. In a specific embodiment, the conductive ceramic body 11b is in a hollow cylindrical shape, and a hollow region of the conductive ceramic body 11b defines a chamber corresponding to the aerosol-generating device. Other structures and functions of the conductive ceramic body 11b are the same as or similar to those of the conductive ceramic body 11a provided in the first embodiment, and are specifically referred to above, and are not described herein again.

The first conductive element 12b and the second conductive element 13b are provided on the outer surface of the conductive ceramic body 11 b; and as shown in fig. 7, the first conductive element 12b and/or the second conductive element 13b extend in the circumferential direction of the conductive ceramic body 11b and are annular. Specifically, the first conductive element 12b and the second conductive element 13b can be formed in the manner described in the above embodiments. In a specific embodiment, the first lead 14 is electrically connected to the first conductive element 12b, and the second lead 15 is electrically connected to the second conductive element 13b, which may be the same as or similar to the lead and conductive element in the first or second embodiment, as described above. Of course, it will be understood by those skilled in the art that the first lead 14 and the second lead 15 may also be connected to the conductive element by welding electrode blocks to enhance the connection strength between the leads and the conductive element.

Wherein, since in this embodiment the electrically conductive ceramic body 11b does not need to be inserted into the aerosol-generating article a, the aerosol-generating article a does not affect the routing of the first and second leads 14, 15 outside the electrically conductive ceramic body 11b, and therefore, in this embodiment, the first electrically conductive element 12b connected to the first lead 14 and the second electrically conductive element 13b connected to the second lead 15 may be provided at both ends of the electrically conductive ceramic body 11b along the length direction of the electrically conductive ceramic body 11 b. It is understood that, in this embodiment, when a voltage is applied between the first conductive element 12b and the second conductive element 13b, a current flows from one end portion to the other end portion of the conductive ceramic body 11b in the length direction of the conductive ceramic body 11 b.

In a specific embodiment, the electric resistance heater 10e for an aerosol-generating device further includes other structures of the electric resistance heater 10a/10b/10c/10d for an aerosol-generating device provided in any of the above embodiments, which may be specifically referred to the above description, and are not repeated herein.

The resistive heater 10e for aerosol generation device that this embodiment provided, through setting up conductive ceramic body 11b, and make conductive ceramic body 11b can generate heat itself when circular telegram, compare in prior art through printing thick film heating circuit on the ceramic base, generate heat and conduct the scheme in order to heat on the ceramic base with the heat through thick film heating circuit, can effectively avoid printing heating circuit, the manufacture craft has been simplified, and can avoid taking place heating circuit and ceramic base contact failure, the problem that drops even from the ceramic base, the life of resistive heater 10e for aerosol generation device has effectively been prolonged. Meanwhile, the first conductive element 12b and the second conductive element 13b of the resistance heater 10e for the aerosol generating device are arranged on the outer surface of the conductive ceramic body 11b at intervals, so that a through groove does not need to be formed in the conductive ceramic body 11b along the radial direction of the conductive ceramic body, the strength of the conductive ceramic body 11b is greatly improved, and the process is simple; meanwhile, for the conductive ceramic body 11b with the same resistance, length and outer diameter, the conductive ceramic body 11b provided by the embodiment is larger in area of the cross section compared with the conductive ceramic body 11 with a hole or a slot in the middle, so that the resistivity range of the conductive ceramic body 11b is greatly improved, the production difficulty of the conductive ceramic body 11b is reduced, and the resistance heater 10e for the aerosol generating device is simple in structure and convenient for mass production. In addition, the problems that the aerosol formed by atomization is poor in consistency and poor in taste due to uneven current distribution on the conductive ceramic body 11b caused by unreasonable grooving positions of the conductive ceramic body 11b can be solved, so that the current distribution on the conductive ceramic body 11b of the resistance heater 10e for the aerosol generating device is uniform, and the aerosol formed by atomization is good in consistency and taste.

The above are only embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. An aerosol-generating device, comprising:

a chamber for receiving an aerosol-generating article;

a resistive heater extending at least partially within the chamber and configured to be inserted into an aerosol-generating article for heating; the resistance heater includes:

a conductive ceramic body configured to extend along a length direction of the resistive heater;

first and second conductive elements arranged at intervals along a circumferential direction of the conductive ceramic body; wherein the first and second conductive elements extend along a length of the conductive ceramic body;

a first lead and a second lead; wherein the first lead is connected to the first conductive element, the second lead is connected to the second conductive element, and the first lead and the second lead are used to supply power to the conductive ceramic body.

2. Aerosol-generating device according to claim 1, wherein the electrically conductive ceramic body is configured as a rod, plate, pin or needle.

3. An aerosol-generating device according to claim 2, wherein the first and second electrically conductive elements are arranged symmetrically in a radial direction of the electrically conductive ceramic body.

4. An aerosol-generating device according to any one of claims 1 to 3, wherein the electrically conductive ceramic body comprises a tapered portion and an extension connected to the tapered portion.

5. An aerosol-generating device according to claim 4, wherein the first and/or second conductive element extends from an end of the extension connected to the taper to an end of the extension facing away from the taper.

6. An aerosol-generating device according to any one of claims 1 to 3, wherein the resistive heater further comprises a first electrode and/or a second electrode, the first lead being connected to the first conductive element via the first electrode; the second lead is connected to the second conductive element through the second electrode.

7. An aerosol-generating device according to any one of claims 1 to 3, wherein the first and/or second conductive elements are conductive tracks or conductive coatings formed on the surface of the conductive ceramic body.

8. An electrical resistance heater for an aerosol-generating device, comprising:

a conductive ceramic body configured to extend along a length direction of the resistive heater;

first and second conductive elements arranged at intervals along a circumferential direction of the conductive ceramic body; wherein the first and second conductive elements extend along a length of the conductive ceramic body;

a first lead and a second lead; wherein the first lead is connected to the first conductive element, the second lead is connected to the second conductive element, and the first lead and the second lead are used to supply power to the conductive ceramic body.

9. An aerosol-generating device, comprising:

a chamber for receiving an aerosol-generating article;

a resistive heater comprising:

a conductive ceramic body configured to extend along a length of the resistive heater, the conductive ceramic body having a tubular shape, the tubular conductive ceramic body surrounding and defining the chamber;

first and second conductive elements arranged at intervals along a circumferential direction of the conductive ceramic body; wherein the first and second conductive elements extend along a length of the conductive ceramic body;

a first lead connected to the first conductive element and a second lead connected to the second conductive element, the first and second leads for providing power to the conductive ceramic body.

10. An aerosol-generating device, comprising:

a chamber for receiving an aerosol-generating article;

a resistive heater, comprising:

a conductive ceramic body configured to extend along a length of the resistive heater, the conductive ceramic body having a tubular shape, the tubular conductive ceramic body surrounding and defining the chamber;

first and second conductive elements arranged at intervals along a length direction of the conductive ceramic body; wherein the first and second conductive elements extend in a circumferential direction of the conductive ceramic body;

a first lead connected to the first conductive element and a second lead connected to the second conductive element, the first and second leads for providing power to the conductive ceramic body.

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