CN216983594U - Gas mist generating device and heater for gas mist generating device - Google Patents

Abstract

The present application relates to an aerosol-generating device and a heater for an aerosol-generating device comprising a receiving chamber for receiving an aerosol-generating article and a heater for heating the aerosol-generating article, further comprising a power supply assembly; the heater comprises a sensing body 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 or wound on the inductor, one end of the induction coil is electrically connected with a conducting wire and is electrically connected with a first output pole of the power supply assembly through the conducting wire, and the other end of the induction coil is electrically connected with the inductor and is electrically connected with a second output pole of the power supply assembly through the inductor. Through setting up induction coil inside the heater for need not to reserve the space that sets up induction coil in other positions of aerial fog generation device, thereby can reduce aerial fog generation device's volume.

Description

Gas mist generating device and heater for gas mist generating device

Technical Field

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

Background

Some existing aerosol generating devices typically include a heat generating body that extends into the interior of the smokable article and generates heat within the smokable article to further volatilize the smokable article to produce an aerosol.

The heating element may generate heat in a varying magnetic field by electromagnetic induction, the coil generating the varying magnetic field is generally located at the periphery of the heating element and is fitted over or wound around a support in the aerosol-generating device, the central region of the support has a receiving cavity for receiving at least part of the smokable article, and part of the heating element is arranged in the receiving cavity to be inserted into the smokable article to heat the smokable article, so the overall thickness of the aerosol-generating device must be increased to configure the receiving space of the coil, resulting in a larger volume of the aerosol-generating device.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a gas mist generating device and a heater for the gas mist generating device, which effectively reduces the volume of the gas mist generating device by tightly combining an induction coil and a receptor.

An aerosol-generating device for heating an aerosol-generating article to generate an aerosol is provided by embodiments of the present application, comprising a receiving chamber for receiving an aerosol-generating article and a heater for heating the aerosol-generating article, further comprising a power supply component;

the heater comprises a sensing body 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 or wound on the inductive body, one end of the induction coil is electrically connected with a wire and is electrically connected with the first output pole of the power supply assembly through the wire, and the other end of the induction coil is electrically connected with the inductive body and is electrically connected with the second output pole of the power supply assembly through the inductive body.

The embodiment of the application provides a heater for an aerosol generating device, which extends along the length direction; the method comprises the following steps:

the induction heating coil comprises a susceptor capable of heating in a changing magnetic field and an induction coil capable of generating the changing magnetic field, wherein the induction coil is sleeved on or wound on the susceptor, and one end of the induction coil is electrically connected with the susceptor.

The induction coil used for generating the variable magnetic field is electrically connected with the induction body capable of generating heat in the variable magnetic field, so that the induction body forms one part of the electrifying loop between the induction coil and the power supply assembly, the induction coil is sleeved or wound on the induction body, namely, the induction coil is arranged in the heater, so that spaces for arranging the induction coil are not required to be reserved at other positions of the aerosol generating device, and the size of the aerosol generating device can be effectively reduced.

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 an exploded view of a heater provided in accordance with an embodiment of the present application;

FIG. 3 is a partial schematic view of a heater provided in accordance with another embodiment of the present application;

FIG. 4 is a partial cross-sectional view of a heater provided in accordance with another embodiment of the present application;

fig. 5 is an overall schematic diagram of a heater provided in an embodiment of 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, 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 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.

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 a 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 for receiving an aerosol-generating article a and a heater 30 for heating the aerosol-generating article a, and further comprises power supply components for generating heat and supplying power to the heater 30.

Referring to figures 1 and 2, the receiving chamber has an opening 50, and an aerosol-generating article a, such as a cigarette rod, is removably received within the receiving chamber through the opening 50; at least a portion of the heater 30 extends lengthwise within the receiving chamber and heats the aerosol-generating article a, such as a cigarette, under a varying magnetic field to volatilize at least one component of the aerosol-generating article a to form an aerosol for smoking; a magnetic field generator, such as an induction coil 32, for generating a changing magnetic field under an alternating current; the power supply assembly comprises an electric core 10 and a circuit 20, wherein the electric core 10 is a rechargeable direct current electric core and can output direct current, and the circuit 20 is electrically connected with the rechargeable electric core 10 and is used for converting the direct current output by the electric core 10 into alternating current with a suitable frequency and supplying the alternating current to the induction coil 32 so as to enable the induction coil 32 to generate a changing magnetic field. In other embodiments, the battery cell 10 may also be a disposable battery, which may not be charged or need not be charged. In other implementations, the power supply component may be a wired power supply that directly connects to mains power through a plug to power the aerosol-generating device.

In a more preferred implementation, the frequency of the alternating current supplied by circuit 20 to the induction coil is between 80KHz and 400 KHz; more specifically, the frequency may be in the range of approximately 200KHz to 300 KHz.

In a preferred embodiment, the battery cell 10 provides a dc supply voltage in a range from about 2.5V to about 9.0V, and the battery cell 10 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 a 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 a 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 embodiments, referring to fig. 5, the heater 30 is generally in the shape of a pin or needle, which in turn is advantageous for insertion into the aerosol-generating article a. Meanwhile, the heater 30 may have a length of about 12 to 19 mm, a diameter of 2.0 to 2.6 mm; these heaters 30 may be made from grade 430 stainless steel (SS430), and may also be made from grade 420 stainless steel (SS420), as well as alloy materials containing iron and nickel, such as permalloy. As further shown in fig. 1 and 5, the heater 30 is configured as a pin or needle or post or rod that extends at least partially within the receiving cavity.

In the embodiment shown in fig. 2-4, the heater 30 comprises an induction coil.

The induction coil 32 may be a conventional solenoid coil for generating a varying magnetic field; in practice, the material of the induction coil 32 is preferably a good conductor material with low resistivity and temperature resistance higher than 500 ℃, such as silver, copper, aluminum, nickel, etc., to improve the Q value of the quality factor of the LC oscillator formed after coupling to the circuit 20.

In use, the induction coil 32 is provided with an upper connection portion 321, a lower connection portion 322 and a spiral section 323, the spiral section 323 extends along the length direction and connects the upper connection portion 321 and the lower connection portion 322, the upper connection portion 321 is located above the lower connection portion 322, and the upper connection portion 32 can enter the aerosol-generating article a deeper than the lower connection portion 322.

In the embodiment shown in fig. 2-4, the heater 30 comprises a susceptor.

The susceptor 31 can be prepared by adopting a soft magnetic alloy material with Curie temperature not lower than 350 ℃; the susceptor 31 is made of a material such as stainless steel, iron-nickel alloy, iron-aluminum alloy, or the like; in use, the susceptor 31 is capable of generating heat in a changing magnetic field.

In particular shape and structure, the susceptor 31 includes:

an elongated rod portion 311 extending in the longitudinal direction, the rod portion 311 penetrating into the induction coil 32 from the upper end of the induction coil 32 in the assembly; or the induction coil 32 is wound around the rod portion 311 and formed as an integral structure with the rod portion 311.

A tapered portion 312, the tapered portion 312 being substantially conical in shape, acting as a guide to facilitate insertion of the heater 30 into the aerosol-generating article a.

In some embodiments, the maximum outer diameter of the tapered portion 312 is greater than the outer diameter of the shaft portion 311, forming a step 315 where they join; further, after assembly, the upper connection portion 321 of the induction coil 32 is stopped by abutting against the step 315, or the step 315 has a hole or a groove extending to the inside of the tapered portion 312, into which the upper connection portion 321 of the induction coil 32 is inserted to form fixing and stopping, and the upper connection portion 321 of the induction coil 32 can be electrically connected with the tapered portion 312 by abutting against the step 315 or by being inserted/fitted into the hole/groove on the step 315.

In some embodiments, the upper connecting portion 321 of the induction coil 32 is electrically connected to the rod portion 311, and the rest of the induction coil 32 is wound or sleeved on the rod portion 311, and is in insulated contact or not in contact with the rod portion 311; the way of electrical connection between the upper connection portion 321 of the induction coil 32 and the rod-shaped portion 311 includes:

(1) the upper connection portion 321 of the induction coil 32 is fixed on the rod portion 311, the surface of the rod portion 311 may have an insulating coating, the upper connection portion 321 and the rod portion 311 are fixed by welding, and the insulating coating on the surface of the rod portion 311 is broken at the time of welding, so that the upper connection portion 321 and the rod portion 311 are electrically connected. The spiral section 323 and the lower connecting part 322 of the induction coil 32 are positioned at the periphery of the rod-shaped part 311 or wound on the rod-shaped part 311, and under the action of the insulating coating, the spiral section 323 and the lower connecting part 322 of the induction coil 32 are in insulating contact with or not in contact with the rod-shaped part 311; or

(2) The upper connecting part 321 of the induction coil 32 is fixed on the rod-shaped part 311, the induction coil wraps the conductor inside the induction coil through an insulating coating or an insulating sleeve, so that when the induction coil 32 is sleeved on the rod-shaped part 311 or wound on the rod-shaped part 311, the spiral section 323 and the lower connecting part 322 of the induction coil 32 are in insulating contact or not in contact with the rod-shaped part 311, and after the insulating coating or the insulating sleeve on the upper connecting part 321 of the induction coil 32 is removed, the upper connecting part 321 of the induction coil 32 can be electrically connected with the rod-shaped part 311 through welding, adhesive tape binding and other modes; or

(3) The surface of the rod-shaped portion 311 may have an insulating coating, and the induction coil 32 wraps the conductor inside the induction coil 32 through the insulating coating or the 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 connection portion 322 of the induction coil 32 are in insulating contact or not in contact with the rod-shaped portion 311, after the insulating coating or the insulating sleeve on the upper connection portion 321 of the induction coil 32 is removed, the upper connection portion 321 of the induction coil 32 may be electrically connected with the rod-shaped portion 311 by welding, the insulating coating on the surface of the rod-shaped portion 311 may be damaged by welding or may be removed by scraping, and a part of the surface coating of the rod-shaped portion 311 may be left blank when the surface coating of the rod-shaped portion 311 is disposed, so as to reserve a position for electrically connecting with the upper connection portion 321 of the induction coil 32.

The outer diameter of the shaft portion 311 described in the above (1), (2), or (3) may be substantially constant, and the outer diameter of at least a part of the tapered portion 312 is gradually reduced in a direction away from the shaft portion 311. In addition to the above-described electrical connection method between the upper connection portion 321 of the induction coil 32 and the rod portion 311 in (1), (2), and (3), other methods are also possible, and this application does not mention one example.

In the embodiment shown in fig. 3, the rod 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, the first portion 311a and the second portion 311b both 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, so that a step 315 is formed at a portion where they are joined, the outer diameter of the first portion 311a is larger than the outer diameter of the second portion 311b, the spiral section 323 is wound on the second portion 311b or sleeved on the second portion 311b, and the upper connection portion 321 of the induction coil 32 is electrically connected to the first portion 311 a; the way of electrically connecting the upper connection part 321 of the induction coil 32 and the first part 311a includes:

(a) as can be seen from fig. 2, 3 and 5, the heater 30 further includes a housing element 33, the housing element 33 is disposed on the periphery of 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 portion 311a is larger than that of the second portion 311b, the gap between the first portion 113a and the inner wall of the housing element 33 is smaller, after the rod-shaped portion 311 is disposed on the housing element 33, the upper connection portion 321 of the induction coil 32 is pressed or clamped by the housing element 33 and the first portion 311a to be in close contact with the first portion 311a, so as to achieve electrical connection, at this time, the surface of the first portion 311a may not have an insulating coating, and the upper connection portion 321 of the induction coil 32 is exposed as a conductor; or

(b) Referring to fig. 3, the first portion 311a has a groove 311a1 thereon, and at least a part of the upper connection portion 321 of the induction coil 32 is fitted in the groove 311a1, so that the upper connection portion 321 of the induction coil 32 is in close contact with the groove 311a1 to achieve electrical connection, or at least a part of the upper connection portion 321 of the induction coil 32 is soldered in the groove 311a1, and the upper connection portion 321 of the induction coil 32 and the first portion 311a are fixed and electrically connected to each other by soldering. The upper connecting portion 321 of the induction coil 32 is positioned by the recess 311a1, so that the upper connecting portion 321 of the induction coil 32 is connected with the power supply assembly through the inductor body 31, compared with the case that the upper connecting portion 321 of the induction coil 32 is electrically connected with the power supply assembly through welding with a conducting wire, the situation that the conducting wire welded with the upper connecting portion 321 of the induction coil 32 is pressed due to the small inner diameter of the case element 33 when the case element 33 is assembled can be avoided, and the situation that the conducting wire welded with the upper connecting portion 321 of the induction coil 32 is bent and deformed or misplaced due to pressing when the case element 33 is assembled is prevented, so that the electric connection between the conducting wire and the upper connecting portion 321 of the induction coil 32 is affected; the recess 311a1 also prevents the upper connection portion 321 of the induction coil 32 from being deformed or dislocated by pressure when the housing element 33 is assembled, so as to ensure the stability of the electrical connection between the upper connection portion 321 of the induction coil 32 and the inductor 31; meanwhile, the upper connecting portion 321 of the induction coil 32 is positioned by the groove 311a1, so that the assembly of the housing element 33 and the inductor 31 can be simplified, the induction coil is suitable for automatic production and processing, and the production efficiency can be greatly improved.

In the embodiment shown in fig. 3 and 4, the rod 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, the third portion 311c is opposite to the tapered portion 312, the lower connection portion 322 of the induction coil 32 is located at the periphery of the third portion 311c, the maximum outer diameter of the third portion 311c may be smaller than the outer diameter of the second portion 311b, or the outer diameter of the third portion 311c gradually decreases along the direction away from the second portion 311b, the inner diameter of the lower connection portion 322 of the induction coil 32 is larger than the outer diameter of the third portion 311c, so that the lower connection portion 322 of the induction coil 32 is located at the periphery of the third portion 311c with a gap from the surface of the third portion 311c, the lower connection portion 322 of the induction coil 32 is used for welding connection with a conductive wire (314), the gap provides an abdicating space, when the conductive wire (314) is welded to the lower connection portion 322 of the induction coil 32, the insulating coating on the surface of the third portion 311c is not damaged, so that the conductive wire is prevented from being electrically connected to the third portion 311c to cause short circuit, or the gap provides an abdicating space, so that the conductive wire does not contact the third portion 311c after the conductive wire (314) is connected to the lower connection portion 322 of the induction coil 32, and the conductive wire (314) is prevented from being electrically connected to the third portion 311c to cause short circuit.

In the embodiment shown in fig. 2-4, the upper connecting portion 321 of the induction coil 32 is electrically connected to the inductor body 31, and the induction coil 32 is electrically connected to a first output pole, such as a positive pole, of the power supply assembly through the inductor body 31, and the lower connecting portion 322 of the induction coil 32 is electrically connected to a second output pole, such as a negative pole, of the power supply assembly through a wire, so that the power supply assembly, the inductor body 31, the induction coil 32, and the wire (314) form an electric circuit for the power supply assembly to supply alternating current to the induction coil 32, and the induction coil 32 can generate a varying magnetic field.

In other embodiments, the lower connecting portion 322 of the induction coil 32 is electrically connected to the inductor body 31, and the induction coil 32 can be electrically connected to the power supply assembly through the inductor body 31, and the upper connecting 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 inductor body 31, the induction coil 32, and the wire (314) form an electric circuit for the power supply assembly to supply alternating current to the induction coil 32, and the induction coil 32 can generate a varying magnetic field.

The induction coil 32 is sleeved or wound on the inductor body 31, so that when the induction coil 32 has an alternating current, not only is an induction current distributed along a radial plane generated in the inductor body 31, so that the inductor body 31 can generate heat by using resistance loss and hysteresis loss of the induction current, but also an alternating current conducted in a length direction is provided in the inductor body 31, so that the inductor body 31 can also generate heat by using resistance loss of the alternating current, thereby contributing to improving the heat generation efficiency of the heater 30.

The inductor 31 may be directly electrically connected to the first output electrode of the power module, for example, the inductor 31 may be electrically connected to the first output electrode directly through the third portion 311c by welding or abutting; the susceptor 31 may be electrically connected to a conductive wire or a conductive post by soldering, abutting, or the like, and then electrically connected to the first output electrode through the conductive wire or the conductive post, so that the susceptor 31 is electrically connected to the first output electrode indirectly.

Referring to fig. 2-4, the sensor 31 further includes:

a first galvanic wire 313 and a second galvanic wire 314; the first electric coupling wire 313 is connected to the susceptor 31, for example, connected to the tail of the third portion 311c of the susceptor 31, and the conducting wire connected to the induction coil 32 is the second electric coupling wire 314; and the first thermocouple wire 313 and the second thermocouple wire 314 are respectively made of different thermocouple wire materials, so that a thermocouple for detecting the temperature of the induction coil 32/the heater 30 can be formed between them. For example, the first galvanic couple wire 313 and the second galvanic couple wire 314 are respectively made of two different materials of galvanic couple materials such as nickel, nickel-chromium alloy, nickel-silicon alloy, nickel-chromium-copper, constantan, iron-chromium alloy, and the like. Since the first thermocouple wire 313 and the second thermocouple wire 314 are made of materials with higher resistivity, which will result in lower overall Q value, in order to reduce the heating power consumption of the first thermocouple wire 313 and the second thermocouple wire 314 when being electrified, the diameters of the first thermocouple wire 313 and the second thermocouple wire 314 can be increased, or the lengths of the first thermocouple wire 313 and the second thermocouple wire 314 can be shortened, and then the first thermocouple wire 313 and the second thermocouple wire 314 are respectively electrically connected with a power supply component through two conducting wires with low resistivity.

Further in a preferred embodiment, the stem portion 311 of the susceptor 31 has an extension length of about 10 to 16mm and a second portion outer diameter dimension of about 1.0 to 1.5 mm; the tapered portion 312 of susceptor 31 has a maximum outer diameter dimension of about 2.3-2.6 mm and an extended length of about 2-4 mm.

And the induction coil 32 has about 6 to 15 turns in a length direction and a length of about 8 to 15 mm. When assembled, the induction coil 32 is wrapped or wound around the shaft portion 311 of the susceptor 31. Further in accordance with the illustration in FIG. 4, the cross-section of the wire material of the induction coil 32 is rectangular in shape; specifically, in the cross section of the wire material of the induction coil 32, the dimension in the length direction is larger than the dimension in the width direction; thereby flattening the wire material of the induction coil 32.

In a more preferred implementation, the shaft portion 311 of the susceptor 31 extends for a length greater than the extension of the induction coil 32; further, after assembly, the rod portion 311 of the susceptor 31 may protrude downward by a certain length, for example, about 1 to 5mm, with respect to the induction coil 32; ensuring that the solder joint on the lower connection portion 322 of the induction coil 32 does not interfere with the assembly of the galvanic wire solder joint on the shaft portion 311 of the susceptor 31.

In the embodiment shown in fig. 2-5, the housing element 33 in the heater 30 is a non-sensitive element that does not generate heat in a changing magnetic field, but has good thermal conductivity, such as may be ceramic or glass; alternatively, the housing element 33 of the heater 30 is a sensitive element that generates heat in a changing magnetic field, and may be made of stainless steel, iron-nickel alloy, iron-aluminum alloy, or the like. The housing member 33 has a tubular shape with a hollow 331, and in an embodiment, the housing member 33 has an outer diameter dimension of about 2.3-2.6 mm, which is substantially the same as the largest outer diameter of the tapered portion 312 of the susceptor 31. After assembly, the housing element 33 surrounds and encloses the induction coil 32, and the upper end of the receptive housing element 33 or the non-receptive, thermally conductive housing element 33 abuts against the step 315 of the susceptor 31.

And, after assembly, the voids in the receptive housing element 33 or the non-receptive, thermally conductive housing element 33 with the induction coil 32 and/or susceptor 31 may be filled and insulated by gluing or by entering a glaze or the like.

As further shown in fig. 5, the tapered portion 312 of susceptor 31 is positioned outside of the housing member 33, which is either susceptor or non-susceptor, heat conductive, after assembly; the outer surface of the heater 30 is thereby defined by the tapered portion 312 of the susceptor 31 and the receptive shell element 33 or the non-receptive, thermally conductive shell element 33.

Further in some alternative implementations, the sensitive housing element 33 may be made of a highly thermally conductive sensitive material that is resistant to temperatures above 600 ℃, such as stainless steel, aluminum alloy, iron-nickel alloy, iron-aluminum alloy, and the like. On the one hand, is itself able to generate heat upon penetration of a magnetic field and on the other hand is able to partially receive heat from the susceptor 31 and thereby heat the aerosol-generating article a. In practice, a protective layer of glass glaze, glass ceramic, or the like may be sprayed on the surface of the sensitive housing element 33, which is advantageous for preventing organic substances of the aerosol-generating article a from depositing on the surface of the sensitive housing element 33 and for preventing the aerosol from corroding.

Or in yet other alternative embodiments, the non-receptive, thermally conductive housing element 33 is non-receptive and is made of a highly thermally conductive ceramic material having a temperature resistance greater than 600 ℃, such as an alumina ceramic, a silicon nitride ceramic, or the like; ceramics and the like have certain strength, rigidity and excellent corrosion resistance.

In still other preferred embodiments, the thickness of the above sensitive housing element 33 or ceramic non-sensitive heat conducting housing element 33 is greater than or equal to 0.25 mm.

With further reference to fig. 2 and 5, the heater 30 further includes:

a flange 34, the flange 34 surrounding or fixed to the outside of the sensitive housing element 33 or the non-sensitive heat conductive housing element 33; and the flange 34 is near the lower end of the heater 30. In use, the aerosol-generating device is held or retained by the gripping or retaining flange 34 and the heater 30 is thereby stably fitted within the aerosol-generating device.

Or in the above implementation, the above heater 30 has convenience of modular production and assembly. For example, the following steps are sequentially adopted in the production and assembly:

firstly, obtaining a sensor body 31, and sleeving or winding a sensing coil 32 on a rod-shaped part 311 on the sensor body 31;

fixing the upper connecting part 321 of the induction coil 32 in the groove 311a1 on the rod part 311 by means of fitting and/or welding, welding the second thermocouple wire 314 on the lower connecting part 322 of the induction coil 32, welding the first thermocouple wire 313 on the rod part 311 such as the third part 311c on the susceptor 31, and forming a temperature thermocouple by the first thermocouple wire 313 and the second thermocouple wire 314;

obtaining the housing element 33 sleeved with the flange 34, penetrating the susceptor 31 sleeved with the induction coil 32 into the housing element 33 from the upper end of the housing element 33, and abutting the upper end of the housing element 33 against the step 315 of the susceptor 31, thereby completing the assembly.

According to the aerosol generating device and the heater for the aerosol generating device, the induction coil used for generating the variable magnetic field is electrically connected with the inductor capable of generating heat in the variable magnetic field, so that the inductor forms a part of the power-on loop between the induction coil and the power supply assembly, the induction coil is sleeved or wound on the inductor, namely, the induction coil is arranged in the heater, the space for arranging the induction coil is not required to be reserved at other positions of the aerosol generating device, and the size of the aerosol generating device can be effectively 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 (14)

1. An aerosol-generating device for heating an aerosol-generating article to generate an aerosol, comprising a receiving chamber for receiving an aerosol-generating article and a heater for heating the aerosol-generating article, further comprising a power supply assembly;

the heater comprises a susceptor capable of heating in a varying magnetic field and an induction coil capable of producing a varying magnetic field;

the induction coil is sleeved or wound on the inductor, one end of the induction coil is electrically connected with the first output pole of the power supply assembly, and the other end of the induction coil is electrically connected with the inductor and is electrically connected with the second output pole of the power supply assembly through the inductor.

2. The aerosol-generating device of claim 1, wherein the inductive coil comprises an upper connecting portion, a lower connecting portion, and a helical segment extending along a length direction and connecting the upper connecting portion and the lower connecting portion, wherein the helical segment is sleeved or wound on the susceptor, and the upper connecting portion is electrically connected to the susceptor.

3. An aerosol-generating device according to claim 2, wherein the susceptor comprises a shaft portion and a tapered portion, the shaft portion extending in a longitudinal direction, the induction coil being fitted over or wound around the shaft portion, and the upper connecting portion being electrically connected to the shaft portion or the tapered portion.

4. An aerosol-generating device according to claim 3, wherein the stem portion comprises a first portion and a second portion, the first portion connecting the tapered portion and the second portion, and 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 section is fitted over or wound around the second portion, and the upper connection is electrically connected to the first portion.

5. An aerosol-generating device according to claim 4 in which the first portion has a recess therein and at least part of the upper connecting portion fits within the recess.

6. An aerosol-generating device according to claim 4, wherein the stem portion comprises a third portion, the second portion connecting the first portion and the third portion, the third portion having a maximum outer diameter that is less than an outer diameter of the second portion, the lower connection being located at a periphery of the third portion, and the lower connection having an inner diameter that is greater than the outer diameter of the third portion.

7. An aerosol-generating device according to claim 3, wherein the maximum outer diameter of the tapered portion is greater than the outer diameter of the stem portion, thereby defining a step between the stem portion and the tapered portion; the heater also includes a housing element that is nested around the periphery of the stem and abuts against the step.

8. The aerosol-generating device of claim 7, wherein the housing element is made of ceramic or glass, or wherein the housing element comprises at least one of an insulating coating, an abrasion resistant coating, and a thermally conductive coating.

9. Aerosol-generating device of claim 7, wherein the housing element is made of a material that can heat up in a changing magnetic field.

10. An aerosol-generating device according to claim 3, wherein at least part of the tapered portion has an outer diameter that decreases in a direction away from the stem portion, the outer diameter of the stem portion being substantially constant.

11. The aerosol-generating device of claim 7, wherein the heater further comprises a flange coupled to a lower end of the housing member; the heater is retained in the aerosol-generating device by the flange.

12. The aerosol-generating device of claim 3, wherein the heater further comprises a first electrical thermocouple wire and a second electrical thermocouple wire, the first electrical thermocouple wire being connected to the susceptor and the susceptor being electrically connected to the second output pole by the first electrical thermocouple wire, the first electrical thermocouple wire being connected to the induction coil and the induction coil being electrically connected to the first output pole by the second electrical thermocouple wire; the first thermocouple wire and the second thermocouple wire are made of different materials so as 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 of claim 1, wherein the wire material of the inductive coil is configured to be flattened in cross-section.

14. A heater for an aerosol-generating device, extending in a length direction; it is characterized by comprising:

the induction heating coil comprises a susceptor capable of heating in a changing magnetic field and an induction coil capable of generating the changing magnetic field, wherein the induction coil is sleeved on or wound on the susceptor, and one end of the induction coil is electrically connected with the susceptor.

Images