CN219781560U - Aerosol generating device - Google Patents

Abstract

The present utility model provides an aerosol-generating device comprising: a magnetic field generator for generating a magnetic field; a chamber for receiving an aerosol-generating article; a resistive heater for insertion into the aerosol-generating article for heating; the resistance heater is provided with a diamagnetic conductive lead; a circuit board operatively connected to the conductive leads; the circuit board is configured to provide an electrical current to the resistive heater through the electrically conductive leads, thereby causing the resistive heater to heat the aerosol-generating article by generating resistive joule heat. The aerosol-generating device above, wherein the demagnetized conductive leads are capable of reducing interaction with a magnetic field generated by the magnetic field generator in use to suppress vibration-induced noise of the conductive leads.

Description

Aerosol generating device

Technical Field

The embodiment of the utility model relates to the technical field of heating non-combustion aerosol generation, in particular to an 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 the compounds without burning. An example of such a product is a heating device that releases a compound by heating rather than burning a material. For example, the material may be tobacco or other non-tobacco products that may or may not contain nicotine.

Known heating devices include a receiving cavity to receive and receive tobacco or other non-tobacco product and to insert into the tobacco or other non-tobacco product for heating by a resistive resistance heater, and a removable or removably operable cylindrical extractor to extract the tobacco or other non-tobacco product from within the receiving cavity by a removal or removal operation. In the known heating device, the extractor is provided with a first magnet which can be stably combined with the heating device through magnetic adsorption with a second magnet on the heating device when the heating device is not in extraction operation; while the resistive heater is powered by conductive leads, which typically employ low resistivity nickel or nickel plated wires, or the like. When current is supplied to the resistance heater through the conductive leads, the nickel-containing ferromagnetic conductive leads can generate a pulse magnetic field around the two conductive leads when PWM pulse current flows; the pulsed magnetic field generated by the conductive lead and the second magnet form attraction or repulsion action, so that the nickel-containing ferromagnetic conductive lead forms vibration-induced noise.

Disclosure of Invention

One embodiment of the present utility model provides an aerosol-generating device comprising:

a magnetic field generator for generating a magnetic field;

a chamber for receiving an aerosol-generating article;

a resistive heater for heating the aerosol-generating article; the resistive heater is provided with a diamagnetic conductive lead;

a circuit board operatively connected to the conductive leads; the circuit board is configured to provide an electrical current to the resistive heater through the electrically conductive leads, thereby causing the resistive heater to heat the aerosol-generating article by generating resistive joule heat.

In some embodiments, the current comprises a pulsed current.

In some embodiments, the conductive leads comprise:

the anti-magnetic conductive wire and the anti-magnetic metal coating layer wrapping the conductive wire.

In some embodiments, the relative permeability of the conductive wire is different than the relative permeability of the metal cladding.

In some embodiments, the conductive leads comprise copper wires with silver cladding.

In some embodiments, the conductive leads have a length of less than 50mm.

In some embodiments, the thickness of the cladding layer is between 0.01 and 0.1mm.

In some embodiments, the circuit board is configured to adjust a duty cycle at which the electrically conductive leads provide pulsed current to the resistive heater to maintain the resistive heater at a preset target temperature for heating the aerosol-generating article.

In some embodiments, the magnetic field generator comprises a first magnet.

In some embodiments, further comprising:

a removable or removable extractor for extracting the aerosol-generating article from within the chamber by a removal or a removal operation; the extractor is provided with a second magnet for magnetically attracting with the first magnet.

In some embodiments, the magnetic field generator comprises an induction coil capable of generating a varying magnetic field when an alternating current is passed.

In some embodiments, the resistive heater is configured as a pin or needle or tab extending at least partially into the chamber for insertion into an aerosol-generating article for heating;

the aerosol-generating device further comprises:

a susceptor surrounding or defining the chamber;

the magnetic field generator comprises an induction coil surrounding the susceptor and heats the aerosol-generating article by generating a magnetic field to induce the susceptor to heat by eddy currents.

The aerosol-generating device above, wherein the demagnetized conductive leads are capable of reducing interaction with a magnetic field generated by the magnetic field generator in use to suppress vibration-induced noise of the conductive leads.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic diagram of an aerosol-generating device according to an embodiment;

FIG. 2 is a schematic illustration of the extractor of FIG. 1 removed to an extracted state;

FIG. 3 is a schematic cross-sectional view of a conductive lead in one embodiment;

FIG. 4 is a schematic view of an aerosol-generating device of yet another embodiment;

fig. 5 is a schematic view of an aerosol-generating device of yet another embodiment.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

An embodiment of the present utility model proposes an aerosol-generating device, the configuration of which may be seen in fig. 1 and 2, comprising:

an elongated housing 10 at least partially defining an outer surface of the aerosol-generating device; the housing 10 has opposite proximal and distal ends 110, 120; in use, the proximal end 110 is the end that is adjacent to the user for the user to draw the aerosol-generating article 1000;

a resistive heater 30 for heating the aerosol-generating article 1000;

a rechargeable dc power core 21 for supplying power;

a circuit board 22 integrated with a circuit or electronic device such as an MCU controller or the like; the circuit board 22 is used to control the supply of power to the resistive heater 30 so that the resistive heater 30 heats.

Further in an alternative implementation, the aerosol-generating article 1000 preferably employs tobacco-containing materials that release volatile compounds from a matrix upon heating; or may be a non-tobacco material capable of being heated and thereafter adapted for electrical heating for smoking. The aerosol-generating article 1000 preferably employs a solid matrix, which may comprise one or more of powders, granules, shredded strips, ribbons or flakes of one or more of vanilla leaves, tobacco leaves, homogenized tobacco, expanded tobacco; alternatively, the solid substrate may contain additional volatile flavour compounds, either tobacco or non-tobacco, to be released when the substrate is heated.

In a preferred embodiment, the DC supply voltage provided by the battery 21 is in the range of about 2.5V to about 9.0V, and the amperage of the DC current that the battery 21 can provide is in the range of about 2.5A to about 20A.

In a preferred embodiment, the resistive heater 30 is generally in the shape of a pin or rod or bar or column or sheet or plate, which is further advantageous for insertion into the aerosol-generating article 1000; meanwhile, the resistive heater 30 may have a length of about 12 to 20 mm and an outer diameter size of about 2 to 4 mm.

In practice, the resistive heater 30 may generally include a resistive heating element, an auxiliary substrate to assist in resistive heating element fixation preparation, and the like. For example, in some implementations, the resistive heating element is in the shape or form of a helical coil. Or in yet other implementations, the resistive heating element is in the form of a conductive trace bonded to the substrate. Or in yet other implementations the resistive heating element is in the shape of a sheet. The applicant provides a construction for a resistance heater 30 having a pin-like hollow housing with heating coils disposed therein, for example in chinese patent application CN114642278A, which is incorporated herein by reference in its entirety. Also for example, the applicant provides in chinese patent CN115606855a construction of a resistive heater 30 with heating tracks arranged on a pin-like substrate, which is incorporated herein by reference in its entirety.

As shown in fig. 1 and 2, the aerosol-generating device further comprises:

a chamber 24 disposed proximate the proximal end 110;

the resistive heater 30 is arranged to extend at least partially into the chamber 24;

an extractor 40 is removably or removably received within the chamber 24 and is capable of extracting the aerosol-generating article 1000 by a moving or removing operation. And when the extractor 40 is received within the chamber 24, at least a portion of the extractor 40 is oozed or exposed outside the housing 10, and is further manipulated by a user by finger gripping or the portion of the extractor 40 exposed outside the housing 10, to move or remove the extractor 40.

The applicant's phillips, for example, in chinese patent CN103997922a, which is incorporated herein by reference in its entirety, sets forth the role and detailed definition of the "extraction" of the aerosol-generating article 1000 of the extractor 40, as well as the role and detailed definition of the operation and extraction of the extractor 40 in the operative and extraction positions by moving and removing.

In the embodiment shown in fig. 1 and 2, the extractor 40 includes:

an extraction cylinder 41, the extraction cylinder 41 being substantially hollow cylindrical in shape; in use, the interior of the extraction cartridge 41 is hollow for receiving and retaining the aerosol-generating article 1000;

a receiving opening 43 defined by the extraction cartridge 41; alternatively, the first end of the extraction cartridge 41 in the longitudinal direction defines a receiving opening 43; in use, a user can receive the aerosol-generating article 1000 through the receiving opening 43 into the extraction cartridge 41 or remove it from the extraction cartridge 41.

FIG. 1 shows a schematic view of extractor 40 received within chamber 24 or in an operative position; in this operating position, the extractor 40 is substantially against the inner bottom wall of the chamber 24; and, the resistive heater 30 penetrates at least partially into the aerosol-generating article 1000 held in the extraction cartridge 41 for heating.

Fig. 2 shows a schematic view of the extractor 40 extracting the aerosol-generating article 1000 from within the chamber 24 to an extraction position; in the extraction position, the aerosol-generating article 1000 is substantially separated from the resistive heater 30 by the extractor 40 following a removal or movement operation of the extractor 40. In the embodiment of fig. 2, in the extracted position, the extractor 40 may have been completely removed from within the chamber 24, and thus separated from the housing 10 or other components within the housing 10. Or in yet other variant embodiments, in the extracted position, the extractor 40 is still partially housed within the chamber 24 and remains connected to the casing 10 or other components within the casing 10, rather than being completely separated.

After the extractor 40 extracts the aerosol-generating article 1000 from the resistive heater 30 and/or the chamber 24, the heated used aerosol-generating article 1000 is again removed from the receiving opening 43 of the extractor 40 by a user and discarded or a fresh aerosol-generating article 1000 is replaced.

As shown in fig. 1 and 2, the aerosol-generating device further comprises: a magnetic field generator, such as a first magnet 23, is disposed within the housing 10 and is disposed adjacent the chamber 24. Correspondingly, the extractor 40 is further provided with a second magnet 42; when the extractor 40 is in the operating position, the resistive heater 30 heats the aerosol-generating article 1000 by the magnetic attraction of the second magnet 42 with the first magnet 23, such that the extractor 40 is held stably in the operating position.

As shown in fig. 1 and 2, the resistive heater 30 is connected to the circuit board 22 by soldered elongate conductive leads 31, such that in use, current is conducted through the conductive leads 31 across the resistive heater 30 to heat the resistive heater 30.

In an embodiment, the circuit board 22 is PWM (pulse width modulated) to supply a pulse current to the resistive heater 30 through the conductive leads 31, thereby heating the resistive heater 30. Specifically, in some embodiments, the circuit board 22 modulates the duty cycle of the current supplied from the battery cell 21 to the resistive heater 30 by PWM, thereby maintaining the resistive heater 30 at a desired target temperature for heating the aerosol-generating article 1000. For example, in some specific embodiments, the circuit board 22 modulates and controls the duty cycle of the current supplied from the battery cell 21 to the resistive heater 30 by PWM so that the resistive heater 30 is heated while maintaining a target temperature of 200 to 400 ℃. And, the circuit board 22 modulates and controls the duty ratio of the current supplied from the battery cell 21 to the resistance heater 30 by the PWM manner to be 20 to 80%.

In fig. 2, the first magnet 23 is arranged offset from the resistive heater 30/conductive leads 31 in the longitudinal direction of the aerosol-generating device. And, in the width direction of the aerosol-generating device, a distance or spacing d1 between the first magnet 23 and the resistive heater 30/conductive lead 31 is less than 35mm; or more preferably, the distance or spacing d1 between the first magnet 23 and the resistive heater 30/conductive leads 31 is less than 15mm. For example, in the embodiment of fig. 2, the first magnet 23 is spaced from the resistive heater 30 by a distance d1 of 4.6mm.

In an embodiment, the conductive leads 31 are elongated. And in this embodiment, the length of the conductive leads 31 is reduced as much as possible, while avoiding the excessively long length to generate a magnetic field in a large length space region when the pulse current flows; so that the length of the conductive leads 31 is reduced as much as possible so that the area of the conductive leads 31 where the magnetic field is generated is as small as possible, thereby avoiding interaction with the first magnet 23. For example, in some embodiments, the length of the conductive leads 31 is less than 50mm; in some specific embodiments, the length of the conductive leads 31 is between 15 and 40mm.

In an embodiment, the conductive leads 31 are made of a diamagnetic material; the relative permeability of the conductive lead 31 made of the diamagnetic material is less than 1; and, the magnetic susceptibility of the conductive lead 31 made of the diamagnetic material is negative. Wherein, "relative permeability" is an electromagnetic term of art, and refers to the ratio of the magnetic permeability of the characterized medium to the vacuum magnetic permeability mu 0. The conductive lead 31 made of the diamagnetic material exhibits remarkable antiferromagnetic properties so that the conductive lead 31 itself is not magnetized when an external magnetic field or a pulse current flows therethrough, thereby reducing interaction with the external magnetic field to suppress vibration-induced noise of the conductive lead 31.

In some embodiments, the conductive leads 31 do not include paramagnetic materials such as tin, aluminum, etc.; and, the conductive leads 31 do not include more ferromagnetic materials such as iron, nickel, cobalt, etc.

In some specific embodiments, the conductive leads 31 are made of a diamagnetic material of gold, silver, copper. And in some embodiments, the elongate conductive leads 31 have a diameter of about 0.1-0.6 mm; for example, in some specific embodiments, the elongate conductive leads 31 have a diameter of 0.3 mm.

In some embodiments, as shown in fig. 3, the conductive leads 31 include:

a diamagnetic conductive wire 311; the method comprises the steps of,

and a diamagnetic metal coating layer 312 formed on the surface of the conductive wire 311.

In some embodiments, the thickness of the metal cladding 312 is approximately 0.01-0.1 mm.

And in some embodiments, conductive filaments 311 and metal cladding 312 have different relative magnetic permeability; for example, in a particular embodiment, the relative permeability of the conductive filaments 311 is smaller than the relative permeability of the metal cladding 312. For example, in some specific embodiments, the conductive wire 311 is copper with a relative permeability of 0.99990 and the metal cladding 312 is silver with a relative permeability of 0.999974.

In some embodiments, the metal coating layer 312 on the surface of the conductive wire 311 may be generally formed by electroplating or the like. For example, in some implementations, the conductive leads 31 may be silver plated copper wire with a silver plated metal cladding 312.

Or fig. 4 shows a schematic view of an aerosol-generating device of a further embodiment, in which the aerosol-generating device comprises:

a housing 10a having a proximal end 110a and a distal end 120a facing away from each other in a longitudinal direction;

a battery cell 21a for supplying power;

a circuit board 22a, integrated with a circuit;

a receiving opening 111a at the proximal end 110a;

a chamber for receiving the aerosol-generating article 1000a; in use, the aerosol-generating article 1000a can be removably received within the chamber through the receiving opening 111 a;

a resistive heater 30a configured as a pin or blade extending at least partially into the chamber; the resistance heater 30a is connected to the circuit board 22a through the conductive lead 31a, and the circuit board 22a provides pulse current modulated by PWM to generate heat, and then the pulse current is inserted into the aerosol-generating article 1000a for heating;

susceptor 50a, surrounding or defining a chamber; in use, susceptor 50a is hollow, tubular in shape; and defines a chamber by the interior hollow of the susceptor 50a for receiving the aerosol-generating article 1000a; susceptor 50a is made of a susceptor material such as permalloy, 430 stainless steel, or the like;

a magnetic field generator 60a, such as an induction coil 60a, is disposed around the susceptor 50a and is configured to generate a varying magnetic field; the susceptor 50a is capable of generating heat by being penetrated by a varying magnetic field, thereby heating the aerosol-generating article 1000a from the periphery of the aerosol-generating article 1000 a.

In the embodiment of fig. 4, the conductive leads 31a are made of a diamagnetic material, which in turn, in use, reduces the interaction of the conductive leads 31a with the magnetic field generated by the magnetic field generator 60a, e.g., the induction coil 60a, to suppress the conductive leads 31a from forming vibration-induced noise.

Or in still further variations, other further magnetic field generators, such as further magnets or induction coils, may be included in the aerosol-generating device; for example, in still other embodiments, the aerosol-generating device may further comprise:

a reservoir for storing a liquid matrix;

a porous body element such as porous ceramic, porous fiber or porous glass, etc. for drawing and storing the liquid matrix from within the reservoir;

a susceptor coupled to the porous body element for heating at least a portion of the liquid matrix within the porous body element to generate an aerosol;

a magnetic field generator, such as an induction coil surrounding the susceptor, for generating a varying magnetic field to cause the susceptor to heat upon penetration by the magnetic field;

a chamber for receiving a solid aerosol-generating article 1000/1000a;

a resistive heater arranged to be pin or needle or sheet-like or the like for insertion into the aerosol-generating article 1000/1000a for heating to generate an aerosol; and in this embodiment the aerosol-generating device is arranged to enable the susceptor to heat the aerosol generated by the liquid matrix within the porous body element, to pass through the aerosol-generating article 1000/1000a and to carry one or more components of the aerosol-generating article 1000/1000a for output; the applicant, for example, in chinese patent CN216255474U, incorporated herein by reference in its entirety, provides a device configuration capable of simultaneously heating a liquid matrix and a solid aerosol-generating article 1000/1000a, respectively, and mixing and then delivering the aerosols generated by the heating of each.

The resistance heater is provided with a conductive lead wire, so that pulse current is guided to the resistance heater through the conductive lead wire, and the resistance heater is heated; the conductive leads are made of a diamagnetic material to reduce or inhibit interactions of the conductive leads with the magnetic field generated by the magnetic field generator.

Or fig. 5 shows a schematic view of an aerosol-generating device of a further embodiment, in which the aerosol-generating device comprises:

a housing 10b having a proximal end 110b and a distal end 120b opposite in a longitudinal direction;

a battery cell 21b and a circuit board 22b for supplying power;

a chamber for receiving the aerosol-generating article 1000b; in use, a user can receive the aerosol-generating article 1000b within or from within the chamber through the receiving opening 111b at the proximal end 110 b;

susceptor 60b, surrounding and defining a chamber;

a magnetic field generator 50b surrounding the susceptor 60b to generate a varying magnetic field to induce the susceptor 60b to generate heat by the eddy current effect to heat the aerosol-generating article 1000b;

the atomizing assembly 70b includes:

a liquid storage chamber 71b for storing a liquid matrix;

a liquid-guiding member 72b such as a porous body member or a capillary member for sucking the liquid matrix from the liquid reservoir 71 b;

a resistive heater 30b coupled to the liquid conducting member 72b for heating at least a portion of the liquid matrix within the liquid conducting member 72b to generate an aerosol; the resistive heater 30b is provided with conductive leads 31b for conducting current over the resistive heater 30b, the conductive leads 31b being connected to the circuit board 22b for providing current to the resistive heater 30 b.

In this embodiment, the aerosol-generating device is arranged such that aerosol generated by heating by the resistive heater 30b is delivered to the aerosol-generating article 1000b and then passes through the aerosol-generating article 1000b and carries one or more components of the aerosol generated by the aerosol-generating article 1000b for mixed output to a user.

And in this embodiment, the conductive leads 31b of the resistive heater 30b are made of a diamagnetic material for inhibiting the interaction of the conductive leads 31b with a magnetic field in the presence of a magnetic field generator to suppress vibration of the conductive leads 31 b.

Or in still other variations, the heating of the aerosol-generating article 1000/1000a/1000b by the aerosol-generating device is by hot air; specifically, the aerosol-generating device may further comprise:

a heat spreader having a plurality of air passages arranged in an array inside; the heat absorbed by the heat spreader as the air passes through the air passage in the heat spreader is heated to form hot air, which is then output to the aerosol-generating article 1000/1000a/1000b for heating the aerosol-generating article 1000/1000a/1000b by means of the hot air.

Accordingly, the heat spreader is heated by receiving heat of the resistive heater; and the conductive leads of the resistive heater are made of a diamagnetic material when a magnetic field generator, such as a magnet or an induction coil, is present to generate a magnetic field.

Or in yet further variations, the aerosol-generating device may also have more types of substrates that can be heated by the resistive heater to generate an aerosol, and the wire material of the resistive heater is made of a diamagnetic material when the resistive heater is in the presence of the magnetic field generator.

It should be noted that the description of the utility model and the accompanying drawings show preferred embodiments of the utility model, but are not limited to the embodiments described in the description, and further, that modifications or variations can be made by a person skilled in the art from the above description, and all such modifications and variations are intended to fall within the scope of the appended claims.

Claims (11)

1. An aerosol-generating device, comprising:

a magnetic field generator for generating a magnetic field;

a chamber for receiving an aerosol-generating article;

a resistive heater for heating the aerosol-generating article; the resistive heater is provided with a diamagnetic conductive lead;

a circuit board operatively electrically connected to the conductive leads; the circuit board is configured to provide an electrical current to the resistive heater through the electrically conductive leads, thereby causing the resistive heater to heat the aerosol-generating article by generating resistive joule heat.

2. The aerosol-generating device of claim 1, wherein the electrically conductive lead comprises:

the anti-magnetic conductive wire and the anti-magnetic metal coating layer wrapping the conductive wire.

3. The aerosol-generating device of claim 2, wherein the relative permeability of the conductive wire is different than the relative permeability of the metal cladding.

4. The aerosol-generating device of claim 2, wherein the electrically conductive lead comprises a copper wire having a silver coating.

5. An aerosol-generating device according to any of claims 1 to 4, wherein the length of the conductive leads is less than 50mm.

6. An aerosol-generating device according to any one of claims 2 to 4, wherein the coating layer has a thickness of from 0.01 to 0.1mm.

7. The aerosol-generating device of any of claims 1 to 4, wherein the electrical current comprises a pulsed electrical current.

8. The aerosol-generating device of claim 7, wherein the circuit board is configured to adjust a duty cycle at which the electrically conductive leads provide pulsed current to the resistive heater to maintain the resistive heater at a preset target temperature for heating the aerosol-generating article.

9. The aerosol-generating device of any of claims 1 to 4, wherein the magnetic field generator comprises a first magnet.

10. The aerosol-generating device of claim 9, further comprising:

a removable or removable extractor for extracting the aerosol-generating article from within the chamber by a removal or a removal operation; the extractor is provided with a second magnet for magnetically attracting with the first magnet.

11. An aerosol-generating device according to any one of claims 1 to 4, wherein the magnetic field generator comprises an induction coil capable of generating a varying magnetic field when an alternating current is passed.