CN218073523U - Gas mist generating device and heater for gas mist generating device - Google Patents

Abstract

The application provides an aerosol-generating device and a heater for the aerosol-generating device; wherein the aerosol-generating device comprises: at least one heater, the heater comprising: at least one first substrate configured to be penetrated by a varying magnetic field to generate heat; at least one induction coil at least partially surrounding the first substrate and adapted to generate a varying magnetic field; a plurality of first air channels are arranged on the first base body; in smoking, air passes at least partially through the first air passage and is heated in the first air passage before being output to the aerosol-generating article. In the aerosol-generating device, the air is heated in the air passage of the first substrate surrounded by the induction coil and then is output to the aerosol-generating article, so that the aerosol-generating article is heated by the hot air.

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 heating non-combustion aerosol generation, in particular to an aerosol generation device and a heater for the aerosol generation device.

Background

Smoking articles (e.g., cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco-burning products by making products that release compounds without burning.

An example of such a product is a heating device that releases a compound by heating rather than burning the material. For example, the material may be an aerosol-generating article comprising tobacco or other non-tobacco products, which may or may not comprise nicotine. A known heating device is arranged around the periphery of a heat dissipation part of a honeycomb structure, the heat dissipation part of the honeycomb structure is heated by the heating element, and air is heated to form hot airflow when passing through honeycomb holes in the heat dissipation part; the tobacco or other non-tobacco product is then heated by the hot gas stream.

SUMMERY OF THE UTILITY MODEL

An embodiment of the present application provides an aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; the method comprises the following steps:

at least one heater, the heater comprising:

at least one first substrate configured to be penetrable by a varying magnetic field to generate heat;

at least one induction coil at least partially surrounding the first substrate and adapted to generate a varying magnetic field;

a plurality of first air channels are arranged on the first base body; in smoking, air passes at least partially through the first air channel and is heated within the first air channel before being output to the aerosol-generating article.

In a preferred implementation, the first air channels are configured to be arranged in order in a predetermined direction within the first substrate.

In a preferred implementation, the first air passage has a diameter of 0.01mm to 3 mm.

In a preferred implementation, the first substrate is configured to extend in a longitudinal direction of the heater;

the first air passage is arranged to penetrate the first base in an axial direction of the first base.

In a preferred implementation, the first substrate is configured as a honeycomb structure.

In a preferred implementation, the heater further comprises:

the first conducting wire and the second conducting wire are used for guiding alternating current to flow through the induction coil so that the induction coil generates a changing magnetic field;

the first substrate is a conductor;

one of the first lead or the second lead is indirectly conducted with the induction coil through the first substrate.

In a preferred implementation, the heater further comprises:

a first electrode at least partially surrounding the first substrate;

a second electrode at least partially surrounding the first substrate;

the induction coil is arranged to extend between the first and second electrodes; the first end of the induction coil is connected with the first electrode, and the second end of the induction coil is connected with the second electrode.

In a preferred embodiment, the first substrate has an extension length of 10 to 40 mm; and/or the first substrate has an outer diameter of 5 to 8 mm.

In a preferred implementation, the heater further comprises:

a magnetic shielding layer at least partially surrounding the induction coil to provide magnetic shielding outside the induction coil.

In a preferred implementation, the heater further comprises:

a thermal insulation layer at least partially surrounding the induction coil to prevent or reduce heat from spreading radially outward of the heater.

In a preferred implementation, the heater further comprises:

at least one second substrate at least partially surrounding the induction coil;

a plurality of second air channels are arranged on the second base body; in suction, air passes at least partially through the second air passage and is heated in the second air passage before being output to the aerosol-generating article.

In a preferred implementation, the second substrate is receptive and is configured to be penetrated by a changing magnetic field to generate heat;

or, the second substrate is non-receptive, the second substrate being thermally conductive with the induction coil and/or the first substrate.

In a preferred implementation, the cross-section of the wire material of the induction coil is configured such that the length extending in the axial direction of the induction coil is greater than the length extending in the radial direction.

In a preferred implementation, the heater further comprises:

the first thermocouple wire and the second thermocouple wire are connected to the induction coil; the first thermocouple wire and the second thermocouple wire have different materials to form a thermocouple therebetween for sensing the temperature of the induction coil.

In a preferred implementation, the first air channels are uniformly arranged in the cross-section of the first substrate;

or, the first substrate comprises a central area and an outer area which are arranged from inside to outside in sequence along the radial direction; the number or distribution density of the first air channels in the central region is less than the number or distribution density of the outer regions.

Yet another embodiment of the present application also proposes a heater for an aerosol-generating device, the heater comprising:

at least one first substrate configured to be penetrable by a varying magnetic field to generate heat;

at least one induction coil at least partially surrounding the first substrate and adapted to generate a varying magnetic field;

a plurality of first air channels are arranged on the first base body; in use, air passes at least partially through the first air passage and is heated within the first air passage.

In some implementations, the induction coil is formed by spirally winding a wire material on the outer side surface of the first substrate.

Yet another embodiment of the present application also proposes an aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; the method comprises the following steps:

at least one heater, the heater comprising:

at least one coil;

at least one second substrate at least partially surrounding the coil;

a plurality of second air channels are arranged on the second base body; in suction, air passes at least partially through the second air channel and is output to the aerosol-generating article after being heated within the second air channel.

In the aerosol-generating device, the air is heated in the air passage of the first substrate surrounded by the induction coil and then output to the aerosol-generating article, so that the aerosol-generating article is heated by the hot air.

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 diagram of an aerosol-generating device provided by an embodiment;

FIG. 2 is a schematic view of the heater of FIG. 1;

FIG. 3 is a schematic longitudinal cross-sectional view of one perspective of the heater of FIG. 2;

FIG. 4 is an exploded view of portions of the heater of FIG. 2;

FIG. 5 is a schematic view of a substrate according to yet another embodiment;

FIG. 6 is a schematic diagram of a cross-section of a heater of yet another embodiment;

FIG. 7 is a schematic view of the induction coil of FIG. 6;

FIG. 8 is a schematic illustration of the temperature field distribution across a cross-section of a substrate in one embodiment;

FIG. 9 is a schematic view showing the distribution of temperature field on the cross section of the substrate in still another embodiment;

FIG. 10 is a schematic longitudinal cross-sectional view of a perspective of a heater of yet another embodiment;

FIG. 11 is a schematic longitudinal cross-sectional view of a perspective of a heater of yet another embodiment;

FIG. 12 is a schematic illustration of the formation of electrodes outside the matrix precursor bodies in the preparation of the heater shown in FIG. 10;

figure 13 is a schematic diagram of an aerosol-generating device provided in accordance with yet another embodiment;

figure 14 is a schematic view of an aerosol-generating device provided in accordance with yet another embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and detailed description.

One embodiment of the present application proposes an aerosol-generating device 100, such as that shown in figure 1, that heats, rather than burns, an aerosol-generating article 1000, such as a cigarette rod, thereby volatilizing or releasing at least one component of the aerosol-generating article 1000 to form an aerosol for inhalation.

Further in alternative implementations, the aerosol-generating article 1000 preferably employs a tobacco-containing material that releases volatile compounds from a substrate upon heating; or it may be a non-tobacco material that is suitable for electrically heated smoking after heating. The aerosol-generating article 1000 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 leaf, tobacco leaf, homogenized 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.

And as shown in figure 1, it is advantageous for the aerosol-generating article 1000 to be received by the aerosol-generating device 100 and then be exposed partially to the exterior of the aerosol-generating device 100, for example as a filter, for inhalation by the user.

The configuration of the aerosol-generating device 100 according to an embodiment of the present application can be seen from fig. 1, the overall external shape of the device is substantially configured as a flat cylinder, and the external member of the aerosol-generating device 100 includes:

a housing 10 having a hollow structure therein to form an assembly space for necessary functional parts such as an electronic device and a heating device; housing 10 has a proximal end 110 and a distal end 120 opposite along its length; wherein the content of the first and second substances,

and as shown in figure 1, the aerosol-generating device 100 further comprises:

a receiving opening 111 at the proximal end 110; in use, the aerosol-generating article 1000 can be at least partially received within the housing 10 through the receiving opening 111, or removed from within the housing 10 through the receiving opening 111;

a wall 12 at least partially surrounding or defining a chamber for receiving at least part of the aerosol-generating article 1000 protruding into the housing 10 through the receiving opening 111;

an air passage 150 between the chamber and the air inlet 121; the air channel 150 thereby provides a passage path from the air inlet 121 into the chamber/aerosol-generating article 1000 in use, as indicated by arrow R11 in figure 1.

In some preferred implementations, the wall 12 is tubular. And, the wall 12 is not removable or fixed, not movable, within the housing 10.

As further shown in figure 1, the aerosol-generating device 100 further comprises:

a battery cell 130 for supplying power; preferably, the battery core 130 is a rechargeable dc battery core 130, and can be recharged by connecting with an external power supply;

a circuit board 140 on which a circuit is arranged.

As further shown in figure 1, the aerosol-generating device 100 further comprises:

a heater 30 to at least partially heat air passing through the heater 30 in suction and to heat the aerosol-generating article 1000 by the heated hot air.

Specifically, according to the illustration of fig. 1, the heater 30 is positioned between the air channel 150 and the chamber; and, the heater 30 is positioned between the wall 12 and the air channel 150; the heater 30, in turn, heats the air drawn into the chamber through the air passageway 150 and outputs the heated, heated air to the aerosol-generating article 1000.

For assembly or output of the gas flow, at least one supporting element 40 is arranged between the heater 30 and the wall 12 in the embodiment of fig. 1. At least one support element 40 for providing support between the wall 12 and the heater 30; and at least one support element 40 also serves to provide retention therebetween to maintain a spacing of greater than 1mm between the heater 30 and the chamber defined by the wall 12; such that the heater 30 and the aerosol-generating article 1000 received in the chamber are not in contact but can only be heated by hot air.

In the implementation of fig. 1, at least one flexible sealing element 40 is arranged between the heater 30 and the wall 12. The flexible sealing member 40 is made of a flexible material such as silicone or a thermoplastic elastomer. Or at least one sealing element 40, is used to provide an airtight seal between the heater 30 and the wall 12 to maximally prevent hot air output by the heater 30 from escaping between the heater 30 and the wall 12.

In the above preferred implementation, the support element 40 or sealing element 40 is annular in shape at least partially surrounding the heater 30/wall 12.

As further shown in fig. 2 to 4, the heater 30 includes:

a base body 31 configured to be arranged in a longitudinal direction of the housing 10; and, the base 31 is configured to be a columnar shape, more preferably, the base 31 is a cylindrical shape; or in yet other implementations, the substrate 31 is square or prismatic. And the substrate 31 is penetrated by the changing magnetic field to generate heat; and, the substrate 31 may be made of a receptive metal or alloy, such as an iron-aluminum alloy, an iron alloy, a nickel alloy, an iron-copper alloy, a carbon-containing alloy or graphite alloy, nickel, and the like. Specifically, the base 31 is made of grade 410 or 420 or 430 stainless steel, or permalloy, iron-aluminum alloy, or the like. For another example, the substrate 31 may be porous nickel having a honeycomb structure.

And in some implementations, the substrate 31 has an extended length of about 10-40 mm; and the base 31 has an outer diameter of about 5 to 8 mm.

The base 31 has an upper end 310 and a lower end 320 facing away in the axial direction; and, the base 31 has several air passages 311 arranged in order in a predetermined direction; and in practice the air channels 311 are straight extending in the axial direction of the base 31. And, several air passages 311 penetrate the base 31 in the axial direction of the base 31. The plurality of air channels 311 may be in the form of through holes formed in the substrate 31 made of a dense material; and in some implementations, the cross-section of the air channel 311 is circular in shape; or in still other implementations, the air passage 311 may also have a cross-sectional shape in various forms such as a hexagon, a quadrangle, a triangle, etc.

And in practice, several air channels 311 are arranged in order within the base 31. The air passage 311 extends in a predetermined direction, not disorderly. And in practice several air channels 311 are arranged in an array within the base 31. And in practice, air can pass through the air passage 311 and be heated within the air passage 311 before being output to the aerosol-generating article 1000, as indicated by arrow R12 in figure 1. And in practice the arrangement of several air channels 311 within the matrix 31, giving the matrix 31 the form of a honeycomb structure.

In fig. 2-4 and some implementations, the plurality of air channels 311 are substantially evenly distributed within the substrate 31. Or in still other implementations, the plurality of air channels 311 are non-uniformly distributed within the substrate 31. For example, the number/density of the plurality of air channels 311 in the central region of the substrate 31 is less than or greater than the number/distribution density near the outer regions. In practice, corresponding to a base 31 of cylindrical shape, the central zone of the base 31 may be substantially a zone within a distance equal to 1/2 of the diameter from the centre of the cross section in the radial direction; the outer portions are portions of the area outside the central area. "distribution density" may be the number of air channels 311 contained in a unit area in the cross section; or "distribution density" may be characterized as the volume occupied by the air channels 311, for example, the distribution density of the air channels 311 in the central region may be characterized as the volume of the air channels 311 in the central region.

And in practice the air passage 311 has a relatively large diameter, for example in the range of 0.01 to 3mm, more preferably 0.01 to 1.0mm, to allow air to flow smoothly therethrough.

And, in some implementations, the cross-sectional area or diameter of the air passage 311 is both substantially constant and the same along the axial direction; or in yet other variations, the cross-sectional area or diameter of the air passageway 311 may vary, such as where at least a portion of the cross-sectional area or diameter of the air passageway 311 decreases in a direction proximate the upper end 310.

In some embodiments, the substrate 31 is a dense receptive material; accordingly, the air passage 311 is formed by subjecting the substrate 31 to laser-induced porosification, etching, or the like.

As further shown in fig. 2 to 4, the heater 30 includes:

an induction coil 32 surrounding and coupled to the base 31; the induction coil 32 is configured as a spiral coil surrounding the base 31; the induction coil 32 is configured to be supplied with an alternating current from the circuit board 140 to generate a varying magnetic field penetrating the base 31, thereby inducing the base 31 to generate heat to heat the air.

In some implementations, the material of the induction coil 32 is made of a relatively low resistivity material of a good conductor metal, such as gold, silver, copper, or alloys containing them. Of course, in a more preferred embodiment, the surface of the induction coil 32 is insulated by spraying an insulating layer or an enameled wire.

Or in yet other implementations, the induction coil 32 may also be formed of a magnetically good conductor material, which may include ferromagnetic materials such as ferromagnetic iron, ferromagnetic steel, or 400 series stainless steel; stainless steel such as grade 410 or grade 420 or grade 430 stainless steel. The induction coil 32 may also be made of soft magnetic materials, such as permalloy, iron-aluminum alloys, and the like; the self-heating magnetic field generator can generate heat in the magnetic field so as to improve the heat generation and the energy utilization efficiency. In yet other variations, the substrate 31 is made of a non-sensitive heat-conductive material, such as alumina ceramic with high thermal conductivity, heat-conductive glass, etc.; the base 31 heats the air by receiving the heat of the induction coil 32 itself.

In a more preferred implementation, the frequency of the alternating current supplied by circuit board 140 to induction coil 32 is between 80KHz and 800KHz; more specifically, the frequency may be in the range of approximately 200KHz to 500 KHz. In one of the most common implementations, the circuit board 140 typically includes a capacitor, and forms an LC resonant circuit with the induction coil 32 via the capacitor; and, the circuit board 140 forms an alternating current flowing through the induction coil 32 by driving the LC resonance circuit to oscillate at the above predetermined frequency.

In a preferred embodiment, the battery cell 130 provides a dc supply voltage in a range from about 2.5V to about 9.0V, and the battery cell 130 provides a dc current with an amperage in a range from about 2.5A to about 20A.

In the embodiment of fig. 2-4, the induction coil 32 is wound of conventional flat-section wire material; the cross-section of the wire material of the induction coil 32 has, in turn, a dimension extending in the longitudinal direction that is greater than a dimension extending in a radial direction perpendicular to the longitudinal direction, so that the cross-section of the wire material of the induction coil 32 has a flat rectangular shape. Or in yet other variations, the induction coil 32 is made by winding a wire material having a circular cross-sectional shape.

And in some implementations, the induction coil 32 has a length approximately equal to the base 31; for example, the induction coil 32 has an extension length of 10 to 40 mm; and, the induction coil 32 has about 6 to 18 turns. And in the embodiment shown in fig. 2-4, the spacing between adjacent turns of the induction coil 32 is small, making the induction coil 32 denser; for example, the spacing between adjacent turns of the induction coil 32 is between 0.1 and 0.5mm, which is advantageous for reducing air gap and increasing inductance value.

And, the induction coil 32 is made of enameled wire or wire with surface insulation; or the surface of the substrate 31 is provided with an insulating layer such as an anodic oxidation layer, an inorganic glue, a glass glaze, a ceramic coating; thereby insulating the induction coil 32 from the base 31.

A first end of the induction coil 32 is provided with a conducting wire 321, and a second end is provided with a conducting wire 322; in assembly, leads 321 and 322 are connected to circuit board 140 to conduct current between induction coil 32 and circuit board 140.

And in still other preferred implementations, the heater 30 further comprises:

a surface heat insulation layer which is sprayed or deposited or wound or wrapped outside the induction coil 32; in use, the surface thermal insulation layer may help prevent or reduce the heat of the heater 30 from spreading radially outward, and may include a surface-coated glass paste, a glass glaze, a ceramic layer coated with a tape, or a metal material layer with a low thermal conductivity.

And in still other preferred implementations, the heater 30 further comprises:

an electromagnetic shielding layer sprayed or deposited or wound or wrapped around the induction coil 32 to provide magnetic shielding outside the induction coil 32; an electromagnetic shielding layer such as a magnetic shielding film. The magnetic shield film may further include a metal or a metal oxide.

For example, fig. 5 shows a schematic view of a base body 31a of yet another modified embodiment, the base body 31a of this embodiment comprising:

an upper end 310a and a lower end 320a facing away from each other in the axial direction;

and a ledge 3110a extending outward in a radial direction at or near upper end 310a;

and a lip 3130a extending outward in a radial direction at or near lower end 320a;

and the base 31a has a portion 3120a between the raised edge 3110a and the raised edge 3130 a.

And base 31a defines a groove between ledge 3110a and ledge 3130a opposite from portion 3120a. During assembly, the induction coil 32 is wound or wrapped around the outside of the portion 3120a, and both ends of the induction coil 32 are fixed against the convex edge 3110a and the convex edge 3130a, respectively, which is advantageous for positioning and stable holding during assembly.

Or FIG. 6 shows a schematic view of a heater 30 of yet another embodiment; in this embodiment, the heater 30 includes:

at least one substrate 31b, which may extend substantially along the length of the heater 30; for example, the base 31b may be substantially columnar; the base body 31b is provided with a plurality of air channels 311b which axially penetrate through the base body 31b, so that the base body 31b is in a honeycomb structure;

at least one induction coil 32b, which may be arranged as a spiral coil surrounding and coupled to the outside of the base 31 b;

at least one base 33b surrounding or enclosing the induction coil 32b; and a plurality of air passages 331b axially penetrating the base 33b in the base 33b, so that the base 33b also has a honeycomb structure.

The outer substrate 33b serves, in use, partly as both a heating source for heating air and for outputting hot air, and also as a heat insulating layer on the outside.

In some implementations, one or both of the substrate 31b and the substrate 33b are made of a receptive material. Alternatively, one or both of the substrate 31b and the substrate 33b are made of a non-sensitive material; such as highly thermally conductive ceramics, glass, etc.

Alternatively, the substrate 31b is made of a sensitive material and can be penetrated by a magnetic field to generate heat; the substrate 33b is made of a non-sensitive heat conductive material and can conduct heat of the substrate 31b or the induction coil 32b to heat air.

And in some implementations, the diameter of the air passage 331b of the base 33b is the same as the diameter of the air passage 311b of the base 31 b; or in still other embodiments, the diameter of the air passageway 331b of the base 33b is greater than the diameter of the air passageway 311b of the base 31 b.

And, the number of the air passages 331b of the base 33b is smaller than the number of the air passages 311b of the base 31 b.

And the induction coil 32b and the base 31b are thermally conductive to each other; alternatively, the induction coil 32b and the base 33b are thermally conductive to each other.

And in the heater 30 of this embodiment, the base body 31b, the induction coil 32b, and the base body 33b are closely bonded by glue, glaze, or the like; or in yet other embodiments, the heater 30 further includes a snap-fit, bayonet-type structure to securely assemble the three.

Or in some implementations, the length of the induction coil 32b is less than the length of either or both of the base 31b and the base 33 b; and is advantageous for assembling them in sequence.

Or in yet other variations, the heater 30 includes:

a resistance heating coil 32b; the substrate 31b and/or the substrate 33b heats up by receiving heat from the resistive heating coil 32b, thereby heating the air passing through the air passage 311b and/or the air passage 331b, and then outputting the heated air to the aerosol-generating article 1000.

Or in some implementations, the air channels 311b are uniformly arranged within the substrate 31 b. FIG. 8 is a schematic diagram showing the distribution of the temperature field across the cross-section of the substrate 31b when the substrate 31b having uniformly distributed air channels 311b receives the resistive heating coil 32b by conduction, in one embodiment.

Or in yet other variations, the air channels 311b are non-uniformly arranged within the substrate 31 b. For example, in some implementations, the air channels 311b are not disposed in a central region of the substrate 31 b; alternatively, the number or density of the air channels 311b in the central region of the base 31b is smaller than the number/distribution density near the outer region. In practice, corresponding to the columnar shaped base 31b, the central area of the base 31b may be substantially an area within a distance equal to 1/2 of the diameter from the center of the cross section in the radial direction; the outer portion is the portion of the area surrounding the central area. And, FIG. 9 shows a schematic view of the temperature field distribution on the cross section of the substrate 31b when the air passages 311b are arranged to avoid the central region of the substrate 31b in one embodiment. It is advantageous to promote the passage of air in the outer, higher temperature areas to make the best possible use of the heat.

As further shown in fig. 6 and 7, two ends of the induction coil 32b are further provided with:

a wire 321b and a wire 322b for supplying power to the induction coil 32b; and (c) a second step of,

a first thermocouple wire 341b and a second thermocouple wire 342b connected to the induction coil 32b by soldering, surface mounting, or the like; the first thermocouple wire 341b and the second thermocouple wire 342b are made of different thermocouple materials, respectively, to form a thermocouple therebetween for sensing the temperature of the induction coil 32 b. For example, two of nickel-copper alloy, nickel-silicon alloy, nickel, and nickel-chromium alloy are used for the first thermocouple wire 341b and the second thermocouple wire 342b, respectively.

And further according to the preferred embodiment of fig. 7, in order for the thermocouple to accurately monitor the temperature of the highest region of the induction coil 32b, the connection positions where the first thermocouple wire 341b and the second thermocouple wire 342b are welded to the induction coil 32b are located substantially in the middle region in the axial direction of the induction coil 32 b. For example, in fig. 7, the first thermocouple wire 341b and the second thermocouple wire 342b are welded to the connection position of the induction coil 32b, and the distance d1 from the upper end of the induction coil 32b is 1/3 to 2/3 of the axial length of the induction coil 32 b.

And, in the embodiment, the first thermocouple wire 341b and the second thermocouple wire 342b are connected to the same position of the induction coil 32b by soldering or the like. Alternatively, in the embodiment of fig. 7, the first thermocouple wire 341b and the second thermocouple wire 342b are connected to different positions of the induction coil 32b by soldering or the like.

In other variations, the conductive wire 321b is indirectly connected to the first end of the induction coil 32b through the base 33b made of conductive material. For example, the first ends of the conductive wire 321b and the induction coil 32b are both soldered to the substrate 33b, thereby forming an indirect conduction.

Or in yet other variations, the heater 30 may sense the temperature of the substrate 31/31a/31b by soldering a thermocouple to the surface of the substrate 31/31a/31b, or mounting a temperature sensor such as PT 1000.

Or in still other embodiments, the surface of the base 31/31a/31b is provided with a recess for mounting a temperature sensor or a lead groove for receiving a soldered thermocouple wire to facilitate mounting and fixing of the temperature sensor/soldered thermocouple wire.

Or in other embodiments, the substrate 31/31a/31b is made of a foamed metal material; for example, in some implementations, the substrate 31/31a/31b includes foamed nickel.

In the embodiment of fig. 7, the first and second thermocouple wires 341b and 342b are attached to the outer surface of the induction coil 32b by soldering or the like, which is convenient for the soldering operation. Or in yet other variations, first thermocouple wire 341b and second thermocouple wire 342b are attached to the inner surface of induction coil 32b by welding or the like.

Or fig. 10 shows a schematic view of a heater 30 of yet another modified embodiment, the heater 30 of this embodiment comprising:

the substrate 31c is made of sensitive metal or alloy material;

the substrate 31c is a conductor;

and, the base 31c has an upper end 310c and a lower end 320c facing away in the axial direction; and an air passage 311c penetrating in the axial direction;

an induction coil 32c, which is a spiral coil, arranged to surround and be bonded to the base 31 c;

the induction coil 32c is connected to the base 31c at the connection position B1 by soldering or the like near a first end of the upper end 310 c.

And, the heater 30 further includes:

a lead wire 321c electrically connected to the base 31c by soldering or the like at a connection position B2 of the base 31c near the lower end 320c, and indirectly electrically connected to the first end of the induction coil 32 c;

a wire 322c directly connected to a second end of the induction coil 32c near the lower end 320c;

further, in use, power is supplied to the induction coil 32c through the conductor 321c and the conductor 322 c.

In this embodiment, the lead wire 321c and the lead wire 322c of the heater 30 for supplying power to the induction coil 32c are both led out after being welded near the lower end 320c of the base 31c, which is advantageous for mass production.

Or fig. 11 shows a schematic view of yet another heater 30 that facilitates mass production by a spooling apparatus, the heater 30 of this embodiment comprising:

the substrate 31d is made of sensitive metal or alloy material; the base 31d is a conductor; and, the surface of the base 31d is insulating; and, the base 31d has an upper end 310d and a lower end 320d facing away in the axial direction; and, the base 31d has an air passage 311d penetrating in the axial direction;

an induction coil 32d, which is a spiral coil, arranged to surround and be bonded to the base 31 d;

an electrode 35d disposed at the upper end 310d of the substrate 31d, at least partially surrounding and bonded to the substrate 31 d; an electrode 36d located at the lower end 320d of the substrate 31d, at least partially surrounding and bonded to the substrate 31 d; electrode 35d and/or electrode 36d may typically employ an electrode ring, an electrode cap, a printed electrode coating, or the like;

the induction coil 32d is arranged to extend between the electrode 35d and the electrode 36d and to be wound outside the base 31 d; and, both ends of the induction coil 32d are connected to the electrode 35d and the electrode 36d, respectively;

a lead 321d, which is welded or connected to the electrode 35d to be indirectly conducted with the first end of the induction coil 32 d; the lead 322d is indirectly connected to the second end of the induction coil 32d by being soldered or otherwise connected to the electrode 36 d.

And in yet other variations, electrodes 35d and 36d are configured as any one of an electrode cap, an electrode ring, a point electrode, a plate electrode, or an orbital type electrode. And in yet other variations, electrodes 35d and 36d are at least partially bendable or deformable.

In a preferred implementation, the electrodes 35d and 36d are substantially the same shape or size.

In a preferred implementation, at least portions of electrodes 35d and 36d are curved.

In a preferred implementation, electrodes 35d and 36d have a size of about 1 × 10 ^-5 Ωm～1×10 ^-9 Resistivity between Ω m. And in practice, electrodes 35d and 36d are fabricated from low resistivity metals or alloys, such as gold, silver, copper or alloys thereof.

The above heater 30 is conveniently manufactured in a modularized or mass production by a winding apparatus, and for example, the manufacturing of the above heater 30 using a winding apparatus may include:

s10, obtaining a matrix precursor 31e, and respectively sleeving or spraying or printing or depositing a plurality of electrodes 35d and 36d which are sequentially arranged at intervals along the axial direction at intervals outside the matrix precursor 31 e;

the spacing of the spaced arrangement between electrode 35d and electrode 36d is periodically present; for example, in fig. 12, the sequential spaced arrangement of electrodes 35d and 36d occurs or progresses alternately in accordance with a spacing distance C1 and a spacing distance C2; the separation distance C1 is greater than the separation distance C2;

s20, winding the conducting wire material forming the induction coil 32d outside the base 31d by a winding device, specifically, winding the induction coil 32d between the spacing distances C1;

after the induction coil 32d is formed by winding, directly welding the two ends of the induction coil 32d located within the interval distance C1 to the electrodes 35d and 36d at the two ends respectively by laser or the like;

s30, further welding leads on the electrode 35d and the electrode 36d respectively, and spraying protective or wrapping layers such as glaze layers on the surfaces of the induction coil 32d, the electrode 35d and the electrode 36d;

s40, cutting the matrix precursor 31e with a cutting device such as a grinding wheel at the spacing distance C2; after the cutting is completed, a large amount of the monomer of the heater 30d can be obtained.

The heater 30 is wound at intervals outside the matrix precursor 31e by using the existing winding equipment for preparing the solenoid coil to form an induction coil 32d, and is welded and fixed; then welding and cutting the lead wire, so as to prepare the single body of the heater 30 in batch; is advantageous for large-scale production.

Further figure 13 shows a schematic view of an aerosol-generating device 100 of yet another embodiment; comprises the following steps: a first heater 30k and a second heater 60k arranged in sequence at intervals.

Wherein the second heater 60k is closer to the chamber/aerosol-generating article 1000 than the first heater 30 k. And, the air is heated to a predetermined temperature by the first heater 30k and the second heater 60k in sequence and then output to the chamber/aerosol-generating article 1000.

The second heater 60k and the first heater 30k are separated by a separator 50 k; and, the separator 50k also serves to provide a seal at the edges of the second heater 60k and the first heater 30 k.

The first heater 30k is located upstream of the second heater 60k, and the second heater 60k is located at the first heater 30k without contact.

And the first heater 30k is arranged to heat air to a first predetermined temperature before being output to the second heater 60k, and the second heater 60 is arranged to further heat air to a second predetermined temperature before being output to the chamber/aerosol-generating article 1000. And the second predetermined temperature is higher than the first predetermined temperature.

The first heater 30k has an extended length greater than that of the second heater 60. And the aerosol-generating device 100 comprises only two heaters. Or in still other implementations, the aerosol-generating device 100 may include more heaters, such as three, four, or five heaters.

In still other implementations, the cross-sectional area of the passage through which air passes in the first heater 30k is greater than the cross-sectional area of the passage through which air passes in the second heater 60 during the drawing. Specifically, it may be that the interval between the heating layers of the heating elements in the first heater 30k is larger than the interval between the heating layers of the heating elements in the second heater 60.

Further figure 14 shows a schematic view of an aerosol-generating device 100 of a further embodiment; comprises the following steps:

the heater 30i includes:

a base 31i extending substantially lengthwise; and the base body 31i has a plurality of air passages therein;

a first induction coil 3210i that partially surrounds the base 31i and extends a distance in an axial direction of the base 31 i;

a second induction coil 3220i partially surrounding the base 31i and extending a distance in the axial direction of the base 31 i;

the first induction coil 3210i and the second induction coil 3220i are spaced apart, and they are not in contact; and the first induction coil 3210i and the second induction coil 3220i may be independently connected to the circuit board 140i, and thus independently driven to heat by the circuit board 140 i.

And, first induction coil 3210i is disposed upstream of second induction coil 3220 i. During the pumping, and the first induction coil 3210i is used to heat the portion of the base 31i surrounded by the first induction coil 3210i to a first predetermined temperature; the second induction coil 3220i is used for heating the portion of the base 31i surrounded by the second induction coil 3220i to a second predetermined temperature; in suction, after the air is heated to a first predetermined temperature via the portion of the substrate 31i surrounded by the first induction coil 3210i, the portion of the substrate 31i surrounded by the second induction coil 3220i is heated to a second predetermined temperature, and finally output to the chamber/aerosol-generating article 1000. And the second predetermined temperature is higher than the first predetermined temperature.

And the aerosol-generating device 100 comprises only two induction coils. Or in still other implementations, the aerosol-generating device 100 may include more, e.g., three, four, or five, inductive coils.

And in still other implementations, first induction coil 3210i and second induction coil 3220i are heated simultaneously. And in still other implementations, first induction coil 3210i and second induction coil 3220i are not heated simultaneously.

And, the first induction coil 3210i and the second induction coil 3220i may be alternately activated.

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 (17)

1. An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; it is characterized by comprising the following steps:

at least one heater, the heater comprising:

at least one first substrate configured to be penetrable by a varying magnetic field to generate heat;

at least one induction coil at least partially surrounding the first substrate and adapted to generate a varying magnetic field;

a plurality of first air channels are arranged on the first base body; in smoking, air passes at least partially through the first air passage and is heated in the first air passage before being output to the aerosol-generating article.

2. The aerosol-generating device of claim 1, wherein the first air channels are configured to be sequentially disposed within the first substrate in a predetermined direction.

3. Aerosol-generating device according to claim 1 or 2, wherein the first air passage has a diameter of 0.01mm to 3 mm.

4. An aerosol-generating device according to claim 1 or 2, wherein the first substrate is configured to extend in a longitudinal direction of the heater;

the first air passage is arranged to penetrate the first base in an axial direction of the first base.

5. An aerosol-generating device according to claim 1 or 2, wherein the first substrate is configured as a honeycomb structure.

6. An aerosol-generating device according to claim 1 or 2, wherein the heater further comprises: a first wire and a second wire for directing an alternating current through the induction coil to cause the induction coil to generate a changing magnetic field;

the first substrate is a conductor;

one of the first lead or the second lead is indirectly conducted with the induction coil through the first base body.

7. An aerosol-generating device according to claim 1 or 2, wherein the heater further comprises:

a first electrode at least partially surrounding the first substrate;

a second electrode at least partially surrounding the first substrate;

the induction coil is arranged to extend between the first and second electrodes; the first end of the induction coil is connected with the first electrode, and the second end of the induction coil is connected with the second electrode.

8. An aerosol-generating device according to claim 1 or 2, wherein the first substrate has an extension of 10 to 40 mm; and/or the first substrate has an outer diameter of 5 to 8 mm.

9. An aerosol-generating device according to claim 1 or 2, wherein the heater further comprises:

a magnetic shielding layer at least partially surrounding the induction coil to provide magnetic shielding outside the induction coil.

10. An aerosol-generating device according to claim 1 or 2, wherein the heater further comprises:

a thermal insulation layer at least partially surrounding the induction coil to prevent or reduce heat from spreading radially outward of the heater.

11. An aerosol-generating device according to claim 1 or 2, wherein the heater further comprises:

at least one second substrate at least partially surrounding the induction coil;

a plurality of second air channels are arranged on the second base body; in suction, air passes at least partially through the second air passage and is heated in the second air passage before being output to the aerosol-generating article.

12. The aerosol-generating device of claim 11, wherein the second substrate is receptive and configured to be penetrated by a changing magnetic field to generate heat;

or, the second substrate is non-receptive, the second substrate being thermally conductive with the induction coil and/or the first substrate.

13. Aerosol-generating device according to claim 1 or 2, wherein the cross section of the wire material of the induction coil is configured to extend a greater length in an axial direction than in a radial direction of the induction coil.

14. An aerosol-generating device according to claim 1 or 2, wherein the heater further comprises:

the first thermocouple wire and the second thermocouple wire are connected to the induction coil; the first thermocouple wire and the second thermocouple wire have different materials to form a thermocouple therebetween for sensing the temperature of the induction coil.

15. Aerosol-generating device according to claim 1 or 2, wherein the number of first air channels is evenly arranged over a cross-section of the first substrate;

or, the first substrate comprises a central area and an outer area which are arranged from inside to outside in sequence along the radial direction; the number or distribution density of the first air channels in the central region is less than the number or distribution density of the outer regions.

16. A heater for an aerosol-generating device, the heater comprising:

at least one first substrate configured to be penetrated by a varying magnetic field to generate heat;

at least one induction coil at least partially surrounding the first substrate and adapted to generate a varying magnetic field;

a plurality of first air channels are arranged on the first base body; in use, air passes at least partially through the first air passage and is heated within the first air passage.

17. An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; it is characterized by comprising:

at least one heater, the heater comprising:

at least one coil;

at least one second substrate at least partially surrounding the coil;

a plurality of second air channels are arranged on the second base body; in suction, air passes at least partially through the second air channel and is output to the aerosol-generating article after being heated within the second air channel.

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