Aerosol-generating device and heater for an aerosol-generating device

Abstract

The application relates to an aerosol generating device and a heater for the aerosol generating device, comprising a receiving cavity for receiving an aerosol generating article and a heater for heating the aerosol generating article, and further comprising a power supply assembly; the heater comprises a susceptor capable of generating heat in a changing magnetic field and an induction coil capable of generating the changing magnetic field; the induction coil is sleeved on or wound around the susceptor, one end of the induction coil is electrically connected with a wire, the wire is electrically connected with a first output pole of the power supply assembly, and the other end of the induction coil is electrically connected with the susceptor and the susceptor is electrically connected with a second output pole of the power supply assembly. By arranging the induction coil inside the heater, the space for arranging the induction coil is not required at other positions of the aerosol generating device, so that the volume of the aerosol generating device can be reduced.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and particularly to aerosol generating apparatus and a heater for the aerosol generating apparatus. Background Technology

[0002] Existing aerosol generating devices typically include a heating element. Some aerosol generating devices generate aerosols by inserting the heating element into the interior of the aerosolized product and heating it inside the product.

[0003] The heating element can generate heat through electromagnetic induction in a changing magnetic field. The coil that generates the changing magnetic field is usually located around the heating element and is sleeved or wound on a support in the aerosol generating device. The middle area of ​​the support has a receiving cavity for accommodating at least a portion of the suctionable product. The heating element is partially arranged in the receiving cavity to be inserted into the suctionable product and then heated. Therefore, the overall thickness of the aerosol generating device must be increased to accommodate the coil, resulting in a larger volume of the aerosol generating device. Summary of the Invention

[0004] This application provides an aerosol generating device and a heater for the aerosol generating device. By tightly combining the induction coil with the sensing body, the volume of the aerosol generating device is effectively reduced.

[0005] This application provides an aerosol generating device for heating an aerosol generating article to generate aerosol, including a receiving cavity for receiving the aerosol generating article and a heater for heating the aerosol generating article, and also includes a power supply component;

[0006] The heater includes a heat-generating sensor in a changing magnetic field and an induction coil capable of generating a changing magnetic field.

[0007] The induction coil is sleeved or wound around the sensor, and one end of the induction coil is electrically connected to a wire and connected to the first output terminal of the power supply component through the wire, while the other end is electrically connected to the sensor and connected to the second output terminal of the power supply component through the sensor.

[0008] This application provides a heater for an aerosol generating device, extending along its length; comprising:

[0009] A heat-generating sensor in a changing magnetic field and an induction coil capable of generating a changing magnetic field, the induction coil being sleeved or wound around the sensor, and one end of the induction coil being electrically connected to the sensor.

[0010] The above-mentioned aerosol generating device and heater for the aerosol generating device have an induction coil for generating a changing magnetic field electrically connected to a sensor that can generate heat in the changing magnetic field, so that the sensor constitutes part of the power supply circuit between the induction coil and the power supply component, and the induction coil is sleeved or wound on the sensor, that is, the induction coil is placed inside the heater, so that there is no need to reserve space for setting the induction coil in other locations of the aerosol generating device, thereby effectively reducing the size of the aerosol generating device. Attached Figure Description

[0011] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0012] Figure 1 This is a schematic diagram of an aerosol generating device provided in an embodiment of this application;

[0013] Figure 2 This is an exploded view of a heater provided in one embodiment of this application;

[0014] Figure 3 This is a partial schematic diagram of a heater provided in another embodiment of this application;

[0015] Figure 4 This is a partial cross-sectional view of a heater provided in another embodiment of this application;

[0016] Figure 5 This is an overall schematic diagram of a heater provided in one embodiment of this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] The terms "first," "second," and "third" used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship or movement of the components in a specific orientation (as shown in the accompanying drawings). If the specific orientation changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be intervening elements. When an element is referred to as being "connected to" another element, it can be directly connected to the other element, or there may be one or more intervening elements. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0021] One embodiment of this application provides an aerosol generating device that can be used to heat an aerosol-generating article, causing the article to volatilize into aerosols for inhalation. The aerosols may include traditional Chinese medicine, nicotine, or flavor compounds such as tobacco flavorings. Figure 1 In the illustrated embodiment, aerosol-generated product A is a tobacco product (such as a cigarette, cigar, etc.), but this is not limited.

[0022] In such Figure 1 In the illustrated embodiment, the aerosol generating device includes a receiving chamber for receiving the aerosol-generated article A and a heater 30 for heating the aerosol-generated article A, and also includes a power supply assembly for supplying power to the heater 30 for heating.

[0023] Please refer to Figure 1 and 2The receiving cavity has an opening 50 through which the aerosol generating product A, such as a cigarette, is removably received. A heater 30, at least a portion of which extends lengthwise within the receiving cavity, heats under a changing magnetic field, thereby heating the aerosol generating product A, such as the cigarette, causing at least one component of the aerosol generating product A to volatilize and form an aerosol for inhalation. A magnetic field generator, such as an induction coil 32, is used to generate a changing magnetic field under alternating current. The power supply assembly includes a battery cell 10 and a circuit 20. The battery cell 10 is a rechargeable DC battery cell capable of outputting DC current. The circuit 20 is electrically connected to the rechargeable battery cell 10 and is used to convert the DC current output by the battery cell 10 into an alternating current with a suitable frequency before supplying it to the induction coil 32, so that the induction coil 32 generates a changing magnetic field. In other embodiments, the battery cell 10 may also be a disposable battery, non-rechargeable or requiring no charging. In other embodiments, the power supply assembly may be a wired power supply, which powers the aerosol generating device by directly connecting to mains power via a plug.

[0024] In a more preferred embodiment, the frequency of the alternating current supplied by circuit 20 to the induction coil is between 80 kHz and 400 kHz; more specifically, the frequency can be in the range of approximately 200 kHz to 300 kHz.

[0025] In a preferred embodiment, the DC supply voltage provided by the battery cell 10 is in the range of about 2.5V to about 9.0V, and the DC current provided by the battery cell 10 is in the range of about 2.5A to about 20A.

[0026] In a further optional embodiment, aerosol-generating article A preferably uses a tobacco-containing material from which volatile compounds are released from the matrix upon heating; or it may be a non-tobacco material suitable for electric heating and smoke generation after heating. Aerosol-generating article A preferably uses a solid matrix, which may include one or more of the following: vanilla leaves, tobacco leaves, homogenized tobacco, expanded tobacco, in powder, granules, fragments, strips, or sheets; or the solid matrix may contain additional tobacco or non-tobacco volatile aroma compounds to be released when the matrix is ​​heated.

[0027] In some embodiments, reference may be made to Figure 5 The heater 30 is generally pin- or needle-shaped, which is advantageous for insertion into the aerosol-generating article A. The heater 30 can have a length of approximately 12–19 mm and a diameter of 2.0–2.6 mm; these heaters 30 can be made of grade 430 stainless steel (SS430), grade 420 stainless steel (SS420), and iron-nickel alloys (such as permalloy). Further details can be found in... Figure 1 and Figure 5As shown, the assembled heater 30 is configured as a pin, needle, column, or rod extending at least partially within the receiving cavity.

[0028] In such Figure 2-4 In the illustrated embodiment, heater 30 includes an induction coil.

[0029] The induction coil 32 can be a typical solenoid coil used to generate a changing magnetic field. In practice, the material of the induction coil 32 is preferably a good conductor material with low resistivity and a temperature resistance higher than 500°C, such as silver, copper, aluminum, nickel, etc., to improve the quality factor Q value of the LC oscillator after being coupled to the circuit 20.

[0030] In use, the induction coil 32 is provided with an upper connecting part 321, a lower connecting part 322 and a spiral segment 323. The spiral segment 323 extends along the length direction and connects the upper connecting part 321 and the lower connecting part 322. The upper connecting part 321 is located above the lower connecting part 322. Relative to the lower connecting part 322, the upper connecting part 322 can penetrate deeper into the aerosol-generated product A.

[0031] In such Figure 2-4 In the illustrated embodiment, heater 30 includes a sensor.

[0032] The sensor 31 can be made of a soft magnetic alloy material with a Curie temperature of not less than 350°C; the materials used to make the sensor 31 include, for example, stainless steel, iron-nickel alloy, iron-aluminum alloy, etc.; during use, the sensor 31 can generate heat in a changing magnetic field.

[0033] In terms of specific shape and structure, the receptor 31 includes:

[0034] The slender rod-shaped portion 311 extends along the length direction and, during assembly, passes through the upper end of the induction coil 32 into the induction coil 32; or the induction coil 32 is wound on the rod-shaped portion 311 and forms an integral structure with the rod-shaped portion 311.

[0035] The conical portion 312, which is basically conical in shape, serves as a guide to facilitate the insertion of the heater 30 into the aerosol-generating article A.

[0036] In some embodiments, the maximum outer diameter of the tapered portion 312 is greater than the outer diameter of the rod-shaped portion 311, and a step 315 is formed at the junction of them; and after assembly, the upper connecting portion 321 of the induction coil 32 abuts against the step 315 to form a stop, or the step 315 has a hole or groove extending into the interior of the tapered portion 312, and the upper connecting portion 321 of the induction coil 32 is inserted into the hole or groove to form a fixation and stop, and the upper connecting portion 321 of the induction coil 32 can be electrically connected to the tapered portion 312 by abutting against the step 315 or by inserting / fitting into the hole / groove on the step 315.

[0037] In some embodiments, the upper connecting portion 321 of the induction coil 32 is electrically connected to the rod-shaped portion 311, and the remaining portion of the induction coil 32 is wound around or sleeved on the rod-shaped portion 311, and is insulated from or not in contact with the rod-shaped portion 311; the electrical connection between the upper connecting portion 321 of the induction coil 32 and the rod-shaped portion 311 includes the following methods:

[0038] (1) The upper connecting portion 321 of the induction coil 32 is fixed to the rod-shaped portion 311. The surface of the rod-shaped portion 311 may have an insulating coating. The upper connecting portion 321 and the rod-shaped portion 311 are fixed by welding. During welding, the insulating coating on the surface of the rod-shaped portion 311 is destroyed, thereby making the upper connecting portion 321 electrically connected to the rod-shaped portion 311. The helical segment 323 and the lower connecting portion 322 of the induction coil 32 are located around the rod-shaped portion 311 or wound around the rod-shaped portion 311. Under the action of the insulating coating, the helical segment 323 and the lower connecting portion 322 of the induction coil 32 are in insulating contact or not in contact with the rod-shaped portion 311; or

[0039] (2) The upper connecting portion 321 of the induction coil 32 is fixed to the rod-shaped portion 311. The conductor inside the induction coil is wrapped by an insulating coating or insulating sleeve, so that when the induction coil 32 is sleeved on or wound around the rod-shaped portion 311, the helical section 323 and the lower connecting portion 322 of the induction coil 32 are insulated from or do not contact the rod-shaped portion 311. After the insulating coating or insulating sleeve on the upper connecting portion 321 of the induction coil 32 is removed, the upper connecting portion 321 of the induction coil 32 can be electrically connected to the rod-shaped portion 311 by welding, tape binding, or other methods; or

[0040] (3) The surface of the rod-shaped portion 311 may have an insulating coating. At the same time, the conductor inside the induction coil 32 is wrapped by the insulating coating or insulating sleeve, so that when the induction coil 32 is sleeved on the rod-shaped portion 311 or wound on the rod-shaped portion 311, the spiral section 323 and the lower connecting portion 322 of the induction coil 32 are insulated from or do not contact the rod-shaped portion 311. After the insulating coating or insulating sleeve on the upper connecting portion 321 of the induction coil 32 is removed, the upper connecting portion 321 of the induction coil 32 can be electrically connected to the rod-shaped portion 311 by welding. The insulating coating on the surface of the rod-shaped portion 311 can be destroyed by welding or removed by scraping. Alternatively, when arranging the coating on the surface of the rod-shaped portion 311, a blank area can be left to reserve the position for electrical connection with the upper connecting portion 321 of the induction coil 32.

[0041] The outer diameter of the rod-shaped portion 311 described in (1), (2), and (3) above can be substantially constant, and the outer diameter of at least a portion of the tapered portion 312 gradually decreases in the direction away from the rod-shaped portion 311. In addition to the electrical connection between the upper connecting portion 321 of the induction coil 32 and the rod-shaped portion 311 described in (1), (2), and (3) above, other methods are also possible, which will not be listed in this application.

[0042] In such Figure 3 In the illustrated embodiment, the rod-shaped portion 311 includes a first portion 311a and a second portion 311b. The first portion 311a connects the tapered portion 312 and the second portion 311b. Both the first portion 311a and the second portion 311b extend along the length direction. The maximum outer diameter of the tapered portion 312 is larger than the outer diameter of the first portion 311a, and a step 315 is formed at their joint. The outer diameter of the first portion 311a is larger than the outer diameter of the second portion 311b. The helical segment 323 is wound around or fitted onto the second portion 311b. The upper connecting portion 321 of the induction coil 32 is electrically connected to the first portion 311a. The manner in which the upper connecting portion 321 of the induction coil 32 is electrically connected to the first portion 311a includes:

[0043] (a) can be referred to Figure 2 , 35. The heater 30 also includes a housing element 33, which is sleeved around the rod-shaped portion 311 and abuts against the step 315. The housing element 33 is made of a hard material such as ceramic, glass, or metal. Because the outer diameter of the first part 311a is larger than the outer diameter of the second part 311b, the gap between the first part 113a and the inner wall of the housing element 33 is smaller. After the rod-shaped portion 311 is sleeved with the housing element 33, the upper connecting portion 321 of the induction coil 32 is squeezed or clamped by the housing element 33 and the first part 311a and comes into close contact with the first part 311a, thereby achieving electrical connection. At this time, the surface of the first part 311a may not have an insulating coating, and the conductor on the upper connecting portion 321 of the induction coil 32 is exposed; or

[0044] (b) can be referred to Figure 3 The first part 311a has a groove 311a1, and at least a portion of the upper connecting part 321 of the induction coil 32 is fitted into the groove 311a1, so that the upper connecting part 321 of the induction coil 32 is in close contact with the groove 311a1 to achieve electrical connection. Alternatively, at least a portion of the upper connecting part 321 of the induction coil 32 is welded into the groove 311a1, and the upper connecting part 321 of the induction coil 32 and the first part 311a are fixed to each other and electrically connected by welding. The upper connecting portion 321 of the induction coil 32 is positioned by the groove 311a1, allowing the upper connecting portion 321 of the induction coil 32 to connect to the power supply assembly via the sensor 31. Compared to the upper connecting portion 321 of the induction coil 32 being electrically connected to the power supply assembly by soldering to a wire, this avoids the wires soldered to the upper connecting portion 321 of the induction coil 32 being squeezed due to the small inner diameter of the housing element 33 during assembly with the housing element 33. This also prevents the wires soldered to the upper connecting portion 321 of the induction coil 32 from bending, deforming, or misaligning due to compression during the assembly of the housing element 33. The groove 311a1 can prevent the upper connection portion 321 of the induction coil 32 from being deformed or misaligned due to pressure during the assembly of the housing element 33, thus ensuring the stability of the electrical connection between the upper connection portion 321 of the induction coil 32 and the sensor 31. At the same time, positioning the upper connection portion 321 of the induction coil 32 by the groove 311a1 can simplify the assembly of the housing element 33 and the sensor 31, making it suitable for automated production and greatly improving production efficiency.

[0045] In such Figure 3 and 4In the illustrated embodiment, the rod-shaped portion 311 further includes a third portion 311c. The second portion 311b connects the first portion 311a and the third portion 311c. The third portion 311c also extends along the length direction and is disposed opposite to the tapered portion 312. The lower connecting portion 322 of the induction coil 32 is located on the periphery of the third portion 311c. The maximum outer diameter of the third portion 311c can be smaller than the outer diameter of the second portion 311b, or the outer diameter of the third portion 311c can gradually decrease in the direction away from the second portion 311b. The inner diameter of the lower connecting portion 322 of the induction coil 32 is larger than the outer diameter of the third portion 311c, such that the lower connecting portion 322 of the induction coil 32... When the 2 is located on the periphery of the third part 311c, there is a gap between it and the surface of the third part 311c. The lower connecting part 322 of the induction coil 32 is used to weld to a wire (314). The gap provides clearance space so that the wire (314) will not damage the insulating coating on the surface of the third part 311c when it is welded to the lower connecting part 322 of the induction coil 32. This can prevent the wire from short-circuiting due to electrical connection with the third part 311c. Alternatively, the gap provides clearance space so that the wire (314) will not contact the third part 311c after it is connected to the lower connecting part 322 of the induction coil 32. This can also prevent the wire (314) from short-circuiting due to electrical connection with the third part 311c.

[0046] In such Figure 2-4 In the illustrated embodiment, the upper connection portion 321 of the induction coil 32 is electrically connected to the sensor 31, and the induction coil 32 can be electrically connected to the first output pole of the power supply component, such as the positive pole, through the sensor 31. The lower connection portion 322 of the induction coil 32 is electrically connected to the second output pole of the power supply component, such as the negative pole, through a wire. Thus, the power supply component, the sensor 31, the induction coil 32 and the wire (314) constitute an electrical circuit in which the power supply component provides alternating current to the induction coil 32, so that the induction coil 32 can generate a changing magnetic field.

[0047] In other embodiments, the lower connection portion 322 of the induction coil 32 is electrically connected to the sensor 31, and the induction coil 32 can be electrically connected to the power supply assembly through the sensor 31. The upper connection portion 321 of the induction coil 32 is electrically connected to the power supply assembly through a wire, so that the power supply assembly, the sensor 31, the induction coil 32 and the wire (314) constitute an electrical circuit in which the power supply assembly provides alternating current to the induction coil 32, so that the induction coil 32 can generate a changing magnetic field.

[0048] The induction coil 32 is sleeved or wound around the sensing body 31. When there is alternating current in the induction coil 32, not only will an induced current distributed in the radial plane be generated in the sensing body 31, allowing the sensing body 31 to generate heat by utilizing the resistive loss and hysteresis loss of the induced current, but the sensing body 31 will also have an alternating current conducted in the length direction, allowing the sensing body 31 to generate heat by utilizing the resistive loss of the alternating current at the same time, thereby helping to improve the heating efficiency of the heater 30.

[0049] The sensor 31 can be directly electrically connected to the first output electrode of the power supply assembly. For example, the sensor 31 can be electrically connected to the first output electrode directly through welding or contact via its third part 311c. Alternatively, the sensor 31 can be electrically connected to a wire or conductive post through welding or contact, and then electrically connected to the first output electrode through the wire or conductive post, thereby indirectly connecting the sensor 31 to the first output electrode.

[0050] Please refer to Figure 2-4 The sensory body 31 is also equipped with:

[0051] A first thermocouple wire 313 and a second thermocouple wire 314; the first thermocouple wire 313 is connected to the sensing element 31, such as at the tail of the third part 311c of the sensing element 31, and the wire connecting the induction coil 32 is the second thermocouple wire 314; and the first thermocouple wire 313 and the second thermocouple wire 314 are made of different thermocouple wire materials, thereby forming a thermocouple between them for detecting the temperature of the induction coil 32 / heater 30. For example, the first thermocouple wire 313 and the second thermocouple wire 314 are made of two different materials from thermocouple materials such as nickel, nickel-chromium alloy, nickel-silicon alloy, nickel-chromium-copper alloy, constantan bronze, and iron-chromium alloy. Since the materials used to make the first thermocouple wire 313 and the second thermocouple wire 314 have high resistivity, this will result in a low overall Q value. In order to reduce the heat dissipation of the first thermocouple wire 313 and the second thermocouple wire 314 when energized, the diameter of the first thermocouple wire 313 and the second thermocouple wire 314 can be increased, or the length of the first thermocouple wire 313 and the second thermocouple wire 314 can be shortened. Then, the first thermocouple wire 313 and the second thermocouple wire 314 can be electrically connected to the power supply component through two low resistivity wires respectively.

[0052] In a further preferred embodiment, the rod-shaped portion 311 of the receptor 31 has an extension length of approximately 10 to 16 mm and an outer diameter of approximately 1.0 to 1.5 mm for the second portion; the tapered portion 312 of the receptor 31 has a maximum outer diameter of approximately 2.3 to 2.6 mm and an extension length of approximately 2 to 4 mm.

[0053] The induction coil 32 has approximately 6 to 15 turns along its length and a length of approximately 8 to 15 mm. After assembly, the induction coil 32 is wrapped around or wound around the rod-shaped portion 311 of the sensor 31. Further according to... Figure 4 As shown, the cross-section of the wire material of the induction coil 32 is rectangular; specifically, the dimension along the length direction of the cross-section of the wire material of the induction coil 32 is larger than the dimension along the width direction, thereby making the wire material of the induction coil 32 flat.

[0054] In a more preferred embodiment, the extension length of the rod-shaped portion 311 of the sensor 31 is greater than the extension length of the induction coil 32; and after assembly, the rod-shaped portion 311 of the sensor 31 can protrude downward relative to the induction coil 32 by a certain length, for example, about 1 to 5 mm; ensuring that the welding point on the lower connecting portion 322 of the induction coil 32 does not interfere with the welding point of the thermocouple wire on the rod-shaped portion 311 of the sensor 31 during assembly.

[0055] In such Figure 2-5 In the illustrated embodiment, the housing element 33 in the heater 30 is a non-sensitive element, unable to generate heat in a changing magnetic field, but possessing good thermal conductivity, such as ceramic or glass; or the housing element 33 in the heater 30 is a sensitive element, capable of generating heat in a changing magnetic field, such as stainless steel, iron-nickel alloy, or iron-aluminum alloy. The housing element 33 is tubular in shape with a hollow core 331. In the embodiment, the housing element 33 has an outer diameter of approximately 2.3 to 2.6 mm, which is essentially the same as the maximum outer diameter of the tapered portion 312 of the sensing element 31. After assembly, the housing element 33 surrounds and encloses the induction coil 32, and the upper end of either the sensitive housing element 33 or the non-sensitive, thermally conductive housing element 33 abuts against the step 315 of the sensing element 31.

[0056] After assembly, the gaps between the sensitive housing element 33 and the induction coil 32 and / or the sensor 31 can be filled and provided with insulation by means of applying glue or introducing glaze.

[0057] See further Figure 5 As shown, after assembly, the conical portion 312 of the sensor 31 is located outside the sensitive housing element 33 or the non-sensitive heat-conducting housing element 33; and the outer surface of the heater 30 is defined by the conical portion 312 of the sensor 31 and the sensitive housing element 33 or the non-sensitive heat-conducting housing element 33.

[0058] In some optional embodiments, the sensitive housing element 33 can be made of a highly thermally conductive sensitive material with a temperature resistance exceeding 600℃, such as stainless steel, aluminum alloy, iron-nickel alloy, or iron-aluminum alloy. On one hand, it can generate heat under the penetration of a magnetic field; on the other hand, it can partially receive heat from the sensor 31, thereby heating the aerosol-generated product A. In some embodiments, a protective layer such as glass glaze, glass ceramic, or ceramic can be sprayed onto the surface of the sensitive housing element 33, which is beneficial for preventing the deposition of organic matter in the aerosol-generated product A and for preventing corrosion by the aerosol.

[0059] Alternatively, in some alternative implementations, the non-thermally conductive housing element 33 is non-thermally conductive and is made of a high thermal conductivity ceramic material with a temperature resistance of over 600°C, such as alumina ceramic, silicon nitride ceramic, etc.; the ceramic, etc., has a certain strength, rigidity and excellent corrosion resistance.

[0060] In some other preferred embodiments, the wall thickness of the above-mentioned sensitive housing element 33 or the non-sensitive thermally conductive housing element 33 made of ceramic material is ≥0.25mm.

[0061] See further Figure 2 and Figure 5 The heater 30 also includes:

[0062] Flange 34 surrounds or is fixed to the outside of the sensitive housing element 33 or the non-sensitive thermally conductive housing element 33; and flange 34 is located near the lower end of heater 30. In use, the atomizing device clamps or holds flange 34, thereby stably mounting heater 30 within the atomizing device.

[0063] Alternatively, in the above implementation, the heater 30 offers advantages in modular production and assembly. For example, the following steps are performed sequentially during production and assembly:

[0064] First, obtain the sensor 31, and then put or wind the induction coil 32 on the rod-shaped part 311 on the sensor 31;

[0065] The upper connecting part 321 of the induction coil 32 is fixed in the groove 311a1 on the rod-shaped part 311 by means of fitting and / or welding, the second thermocouple wire 314 is welded on the lower connecting part 322 of the induction coil 32, and the first thermocouple wire 313 is welded on the rod-shaped part 311 on the sensing body 31, such as the third part 311c, and a temperature measuring thermocouple is formed by the first thermocouple wire 313 and the second thermocouple wire 314.

[0066] Obtain the housing element 33 with flange 34, and then insert the sensor 31 with induction coil 32 into the housing element 33 from the top end of the housing element 33, and make the top end of the housing element 33 abut against the step 315 of the sensor 31, thus completing the assembly.

[0067] The aforementioned aerosol generating device and heater for the aerosol generating device have an induction coil for generating a changing magnetic field electrically connected to a sensor that can generate heat in the changing magnetic field, such that the sensor constitutes part of the power supply circuit between the induction coil and the power supply component, and the induction coil is sleeved or wound on the sensor, that is, the induction coil is placed inside the heater, so that there is no need to reserve space for setting the induction coil in other locations of the aerosol generating device, thereby effectively reducing the size of the aerosol generating device.

[0068] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An aerosol generating device for heating an aerosol generating product to generate an aerosol, characterized in that, It includes a receiving chamber for receiving an aerosol-generated article and a heater for heating the aerosol-generated article, and also includes a power supply assembly; The heater includes a heat-generating sensor in a changing magnetic field and an induction coil capable of generating a changing magnetic field. The induction coil is wrapped around or wound on the sensor, and one end of the induction coil is electrically connected to the second output terminal of the power supply assembly, while the other end is electrically connected to the sensor and, through the sensor, is electrically connected to the first output terminal of the power supply assembly.

2. The aerosol generating device as described in claim 1, characterized in that, The induction coil includes an upper connecting part, a lower connecting part, and a helical segment. The helical segment extends along the length direction and connects the upper connecting part and the lower connecting part. The helical segment is sleeved or wound on the sensor. The upper connecting part is electrically connected to the sensor.

3. The aerosol generating device as described in claim 2, characterized in that, The sensor includes a rod-shaped portion and a conical portion. The rod-shaped portion extends in the length direction. The induction coil is sleeved or wound on the rod-shaped portion. The upper connecting portion is electrically connected to the rod-shaped portion or to the conical portion.

4. The aerosol generating device as described in claim 3, characterized in that, The rod-shaped portion includes a first portion and a second portion. The first portion connects the tapered portion and the second portion. The maximum outer diameter of the tapered portion is greater than the outer diameter of the first portion. The outer diameter of the first portion is greater than the outer diameter of the second portion. The helical segment is sleeved or wound around the second portion. The upper connecting portion is electrically connected to the first portion.

5. The aerosol generating device as described in claim 4, characterized in that, The first portion has a groove, and at least part of the upper connecting portion is fitted into the groove.

6. The aerosol generating device as described in claim 4, characterized in that, The rod-shaped portion includes a third portion, the second portion connects the first portion and the third portion, the maximum outer diameter of the third portion is smaller than the outer diameter of the second portion, the lower connecting portion is located on the periphery of the third portion, and the inner diameter of the lower connecting portion is larger than the outer diameter of the third portion.

7. The aerosol generating device as described in claim 3, characterized in that, The maximum outer diameter of the tapered portion is greater than the outer diameter of the rod-shaped portion, thereby defining a step between the rod-shaped portion and the tapered portion; the heater also includes a housing element that is sleeved around the periphery of the rod-shaped portion and abuts against the step.

8. The aerosol generating device as described in claim 7, characterized in that, The housing element is made of ceramic or glass, or the housing element includes at least one of an insulating coating, a wear-resistant coating, and a thermally conductive coating.

9. The aerosol generating device as described in claim 7, characterized in that, The housing element is made of a material that can generate heat in a changing magnetic field.

10. The aerosol generating device as described in claim 3, characterized in that, The outer diameter of at least a portion of the tapered portion gradually decreases in the direction away from the rod-shaped portion, while the outer diameter of the rod-shaped portion remains substantially constant.

11. The aerosol generating device as described in claim 7, characterized in that, The heater also includes a flange that is coupled to the lower end of the housing element; the heater is held in the aerosol generating device by the flange.

12. The aerosol generating device as described in claim 3, characterized in that, The heater further includes a first thermocouple wire and a second thermocouple wire. The first thermocouple wire is connected to the sensing element, and the sensing element is electrically connected to the first output electrode through the first thermocouple wire. The first thermocouple wire is connected to the induction coil, and the induction coil is electrically connected to the second output electrode through the second thermocouple wire. The first thermocouple wire and the second thermocouple wire are made of different materials to form a thermocouple for sensing the temperature of the heater between the first thermocouple wire and the second thermocouple wire.

13. The aerosol generating device as described in claim 1, characterized in that, The cross-section of the conductor material of the induction coil is constructed to be flat.

14. A heater for an aerosol generating device, extending along its length; characterized in that, include: A heat-generating sensor in a changing magnetic field and an induction coil capable of generating a changing magnetic field, the induction coil being sleeved or wound around the sensor, and one end of the induction coil being electrically connected to the sensor.

Images