Aerosol generating device

Abstract

The utility model provides an aerosol generating device which comprises a shell and a heating body, the shell is provided with a mounting cavity, the mounting cavity is used for containing an aerosol forming substrate, and the heating body is at least partially arranged in the mounting cavity and inserted into the aerosol forming substrate for heating. The heating body comprises a heating base body, an insulator and an electric conductor which are arranged in a stacked mode, the heating base body is arranged on the inner side of the insulator in an embedded mode and extends in the inserting direction of the heating body, and the electric conductor is arranged on the outer side of the insulator in a spiral shape and used for being electrified to generate an alternating magnetic field to heat the heating base body. As heat conduction is carried out from inside to outside, the preheating waiting time of the aerosol generating device can be shortened, the energy consumption waste is reduced, and the heating efficiency is improved. Due to the arrangement of the insulator, the electric conductor and the heating base body are insulated, and the arrangement mode of stacking from inside to outside is adopted, so that the size of the heating body can be reduced, the weight of the heating body is reduced, and the energy loss is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and more specifically to an aerosol generating device. Background Art

[0002] Aerosol generating devices (such as atomizing equipment, etc.) are a type of product that utilizes the thermal effect of a heating element to heat an aerosol-forming matrix so that the aerosol-forming matrix generates an aerosol without burning. At present, the heating element is mainly heated by a centrally located resistance heating wire that then conducts heat outward to heat the aerosol-forming matrix. The heating speed is slow and the energy loss is large. In addition, since the resistance of the heating element is a solid structure made of metal, it has a large mass and a low heating efficiency, which also causes a certain amount of energy loss. Utility Model Content

[0003] The present application provides an aerosol generating device which adopts electromagnetic heating, has high heating efficiency, is light in weight, and reduces losses.

[0004] The present application provides an aerosol generating device, comprising: a shell, the shell having an installation cavity, the installation cavity being used to place an aerosol-forming substrate; and a heating element, the heating element being arranged in the installation cavity and at least partially inserted into the aerosol-forming substrate for heating, the heating element comprising a heating substrate, an insulator and a conductor arranged in a stacked manner, the heating substrate being embedded in the inner side of the insulator and extending along the insertion direction of the heating element, the conductor being spirally arranged on the outer side of the insulator, and the conductor being used to generate an alternating magnetic field when energized to heat the heating substrate.

[0005] In one embodiment, the heat-generating substrate is constructed as a hollow rod-shaped, bar-shaped or needle-shaped structure with an opening at one end, and the opening is arranged to face away from the aerosol-forming substrate.

[0006] In one embodiment, the heating base includes a puncturing portion and an extending portion. Along the insertion direction of the heating body, the puncturing portion is arranged at one end of the extending portion and is used to be inserted into the aerosol-forming matrix so that at least a portion of the extending portion is inserted into the aerosol-forming matrix.

[0007] In one embodiment, the conductor extends from the connecting end of the puncturing portion and the extending portion to an end of the extending portion away from the puncturing portion, and the extending length of the conductor is less than or equal to the extending length of the extending portion.

[0008] In one embodiment, the heating element further includes a protective body, and the protective body is arranged on the outer side of the conductor.

[0009] In one embodiment, the insulator is an insulating coating formed on the outside of the heat-generating substrate; and / or the conductor is a spiral conductive coating formed on the outside of the insulator; and / or the protector is a protective coating formed on the outside of the conductor.

[0010] In one embodiment, the conductor is a spiral conductive coating formed on the outside of the insulator; and / or the insulator is a spiral insulating coating formed on the inside of the conductor; and / or the protector is a spiral protective coating formed on the outside of the conductor.

[0011] In one embodiment, the thickness of the insulating coating, the conductive coating and the protective coating are all less than 1 mm.

[0012] In one embodiment, the aerosol generating device further includes a mounting base, and the mounting base is mounted in the mounting cavity and is used to fix the heating element.

[0013] In one embodiment, the aerosol generating device also includes a support member, which is arranged in the installation cavity and on the installation base, and the support member includes a first end, a second end and a placement cavity formed between the first end and the second end, the aerosol forming matrix is ​​inserted from the first end, and at least a portion of its structure is arranged in the placement cavity, and the heating element is inserted from the second end into the placement cavity, and at least a portion of its structure is inserted into the aerosol forming matrix, for heating the aerosol matrix.

[0014] According to the aerosol generating device in the above embodiment, it includes a shell and a heating element. The heating element is at least partially inserted into the aerosol forming matrix for heating. The heating element includes a stacked heating substrate, an insulator and a conductor. The heating substrate is embedded in the inner side of the insulator and extends along the insertion direction of the heating element. The conductor is spirally arranged on the outer side of the insulator. The conductor is used to heat the heating substrate by electromagnetic heating. The spiral conductor arranged on the outer side of the heating substrate allows the heating substrate to generate eddy current heating through electromagnetic induction, thereby heating the aerosol forming matrix. The heating element is inserted into the aerosol forming matrix to conduct heat from the inside to the outside, which can shorten the preheating waiting time of the aerosol generating device, reduce energy waste, and improve heating efficiency and energy utilization. By arranging an insulator on the outer side of the heating substrate, the conductor and the heating substrate are insulated. By adopting a stacked arrangement from the inside to the outside, the size of the heating element can be reduced, thereby reducing its weight and reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural cross-sectional view of an aerosol generating device in an embodiment;

[0016] Figure 2 This is an assembly and disassembly diagram of a heating element in an embodiment;

[0017] Figure 3 A cross-sectional view of the structure after the heating element and the aerosol-forming substrate are assembled in one embodiment;

[0018] Figure 4 A structural cross-sectional view of a heating element in an embodiment;

[0019] Figure 5 for Figure 4 A local enlarged schematic diagram of the middle A;

[0020] Figure 6 It is a schematic diagram of the structure of a heating element in another embodiment.

[0021] Among them: 100, shell; 110, installation cavity; 200, heating element; 210, heating base; 211, puncture part; 212, extension part; 220, insulator; 230, conductor; 240, protective body; 300, installation base; 400, support member; 410, first end; 420, second end; 430, placement cavity; 500, aerosol forming matrix; 510, suction section; 520, confluence filtration section; 530, matrix section; 600, power supply component. DETAILED DESCRIPTION

[0022] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0023] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0024] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0025] In the existing aerosol generating device, the heating element 200 generally adopts a solid metal resistance heating wire to heat the aerosol forming matrix 500, so that it is heated and atomized to form an aerosol for the user to use. However, due to the influence of the efficiency of the resistance heating itself, and the resistance of the solid structure will increase the weight of the entire heating element 200, and the inside of the resistance will absorb a certain amount of heat, resulting in slow heating, affecting the heating effect and the user experience. In order to solve this technical problem, the present application provides the following technical solution content.

[0026] refer to Figure 1-6 The present application provides an aerosol generating device, including a shell 100 and a heating element 200. The shell 100 has an installation cavity 110. The installation cavity 110 is used to place an aerosol-forming matrix 500. The aerosol-forming matrix 500 can also be moved out of the installation cavity 110. The heating element 200 is arranged in the installation cavity 110 and at least partially inserted into the aerosol-forming matrix 500 for heating. The heating element 200 includes a stacked heating substrate 210, an insulator 220 and a conductor 230. The heating substrate 210 is embedded in the inner side of the insulator 220 and extends along the insertion direction of the heating element 200. The conductor 230 is spirally arranged on the outer side of the insulator 220. The conductor 230 is used to generate an alternating magnetic field when energized to heat the heating substrate 210.

[0027] The aerosol generating device further comprises a power supply component 600 which is connected to the conductor 230 circuit to provide an alternating current for operation, thereby generating an alternating magnetic field around the heating substrate 210, thereby enabling the heating substrate 210 to generate heat by utilizing the eddy current effect.

[0028] The shell 100 can be understood as a collection of related components that constitute the overall outer contour structure of the generating device. For example, the shell 100 can be constructed by combining one or more components, and a corresponding assembly structure is provided inside or on the shell wall of the shell 100 so that other components of the generating device can be assembled in the shell 100. For example, the control circuit board and battery (not shown in the figure) in the power supply component 600 can be assembled inside the shell 100, and the power supply component operation buttons can be installed on the shell 100 in a manner that they are exposed outside the shell 100; with the help of the shell 100, the user can carry, move, operate and use the generating device.

[0029] In one embodiment, the installation cavity 110 may be formed by the shell 100 being recessed inwardly, and the installation cavity 110 is adapted to the outer shapes of the aerosol-forming substrate 500 and the heating element 200 .

[0030] Electromagnetic induction heating is achieved by creating an alternating magnetic field, placing a metal object in the alternating magnetic field, and generating eddy currents in the metal object due to the change in magnetic field lines of the alternating magnetic field, causing the metal material to heat up. The alternating magnetic field is created by connecting an alternating current to the conductor 230 to generate an alternating magnetic field, and the alternating frequency of the alternating current is ≥100K.

[0031] The present application adopts electromagnetic heating, and utilizes the spiral conductor 230 (or coil) disposed outside the heating substrate 210 to make the heating substrate 210 produce an eddy current effect, thereby generating heat and heating the aerosol-forming matrix 500. The heating element 200 is inserted into the aerosol-forming matrix 500, and the contact relationship between the heating element 200 and the aerosol-forming matrix 500 is utilized to heat the atomized aerosol-forming matrix 500 and generate an aerosol in a central heating manner, which can shorten the preheating waiting time of the aerosol generating device, reduce energy consumption and waste, and improve heating efficiency. By arranging an insulator 220 on the outside of the heating substrate 210, the conductor 230 and the heating substrate 210 are insulated, and the arrangement method of stacking from the inside to the outside is adopted to reduce the matching gap between the various structures of the heating element 200, and the size of the heating element 200 can be reduced, thereby reducing its weight and reducing energy loss.

[0032] The aerosol-forming matrix 500 generally includes a suction section 510, a confluence filter section 520 and a matrix section 530 which are connected in sequence. The heating element 200 is inserted into the matrix section 530 and heats it so that the aerosol-forming matrix 500 is heated to generate an aerosol. The aerosol is discharged from the matrix section 530 through the confluence filter section 520 and the suction section 510 in sequence and discharged from the shell 100. The confluence filter section 520 is used to filter the aerosol flowing out of the matrix section 530.

[0033] In one embodiment, in order to ensure that the entire matrix segment 530 can be heated evenly, when the heating element 200 is inserted into the matrix segment 530 , the end surface close to the suction segment 510 is located at the connection between the matrix segment 530 and the confluence filter segment 520 .

[0034] In one embodiment, the heating substrate 210 is constructed as a hollow rod-shaped, bar-shaped or needle-shaped structure with an opening at one end, and the opening is arranged to face away from the aerosol-forming matrix 500. The heating substrate 210 and the mounting cavity 110 are arranged coaxially. After the aerosol-forming matrix 500 is inserted, the heating substrate 210 is also arranged coaxially with the aerosol-forming matrix 500, so that the heating element 200 can be located at the center of the aerosol-forming matrix 500, so that uniform heating can be achieved from the center to the periphery, thereby avoiding uneven heat conduction distances between the periphery of the heating element 200 and the aerosol-forming matrix 500, which affects the taste of the aerosol.

[0035] Accordingly, the hollow structure of the heating substrate 210 can further reduce the weight of the heating element 200, reduce the energy absorption between the heating element 200, improve the heating efficiency and effect, and reduce energy loss. The heating substrate 210 at one end is open at one end, and the opening is arranged away from the aerosol forming substrate 500. There is no airflow conduction channel between the heating element 200 and the aerosol forming substrate 500, so that the generated aerosol can be prevented from flowing from the heating element 200 to other structures of the aerosol generating device (such as power supply components, etc.) in the opposite direction, thereby protecting the aerosol generating device and increasing its service life.

[0036] refer to Figure 4-6 The heating base 210 includes a puncturing portion 211 and an extending portion 212. Along the insertion direction of the heating body 200, the puncturing portion 211 is arranged at one end of the extending portion 212 for puncturing and inserting into the aerosol forming matrix 500, so that at least part of the extending portion 212 is inserted into the aerosol forming matrix 500.

[0037] In one embodiment, the puncture portion 211 and the extension portion 212 form a straight-through structure extending along the insertion direction. The puncture portion 211 is a conical structure or a truncated cone structure with a smaller end face size. The puncture portion 211 has two puncture surfaces. In order to uniformly heat the aerosol-forming matrix 500 around the puncture portion 211, the two puncture surfaces are symmetrically arranged along the axis of the extension portion 212. Of course, in other embodiments, the two puncture surfaces are asymmetrical structures. In this case, only the puncture function is used to insert the extension portion 212 into the aerosol-forming matrix 500. When in use, it can be located in the confluence filter section 520. Of course, the heat utilization rate in this embodiment is lower than that in the embodiment in which the puncture surfaces are symmetrical.

[0038] In order to reduce unnecessary energy loss and improve the energy utilization rate of the entire device, the conductor 230 extends from the connecting end of the puncture portion 211 and the extension portion 212 to the end of the extension portion 212 away from the puncture portion 211, and the extension length of the conductor 230 is less than or equal to the extension length of the extension portion 212. The extension portion 212 provided with the conductor 230 can generate eddy current effect to generate heat, while the portion without the conductor 230 does not generate heat. The length of the conductor 230 is shortened, so that the conductor 230 is provided in the portion of the extension portion 212 located in the aerosol forming matrix 500. After the portion is energized, it is heated by electromagnetic induction, and other parts do not lose energy.

[0039] In order to further save materials, the extension portion 212 may also be composed of two parts. The part inserted into the aerosol-forming matrix 500 during operation is made of a metal material that can generate an electromagnetic eddy current effect, and the other part is deliberately made of a lower-cost insulating material.

[0040] In order to further protect the conductor 230 , the heating element 200 further includes a protective body 240 , which is disposed outside the conductor 230 to prevent the airflow in the installation cavity 110 from corroding the conductor 230 , thereby increasing the service life of the device.

[0041] In order to further reduce the weight of the entire heating element 200 and reduce energy loss, the insulator 220 is an insulating coating formed on the outside of the heating base 210, and the insulating coating can be made of ceramics or the like; and / or the conductor 230 is a spiral conductive coating formed on the outside of the insulator 220, and the conductive coating can be an alloy consisting of one or more of gold, silver, and chromium. A slurry is made of conductive metal material, and then a printing and sintering process is used to form the conductive coating. Preferably, silver paste can be used to prepare the conductive coating; and / or the protector 240 is a protective coating formed on the outside of the conductor 230, and the protective coating can be made of ceramics or other insulating materials.

[0042] refer to Figure 4 and 5 The insulating coating and the protective coating cover the entire surface of the heating substrate 210 , and can protect the heating substrate 210 .

[0043] Furthermore, the thickness of the insulating coating, the conductive coating and the protective coating are all less than 1 mm. Since the coating thickness is relatively small, the overall thickness is small, the weight is light, and the heating speed is fast.

[0044] The heating base 210 is formed of a soft magnetic material. The extension portion 212 of the heating base 210 is a hollow columnar structure. The dimension from the inner wall to the outer wall of the structure is less than 4 mm, which can meet the heating requirements while reducing the volume and weight.

[0045] In one embodiment, the insulating coating and the protective coating can also cover the entire extension length of the extension portion 212, and the conductive coating is only provided on the portion inserted into the aerosol forming matrix 500 according to usage requirements, and the protective coating and the insulating coating are used to protect the conductive coating and the heating substrate 210.

[0046] In another embodiment, reference Figure 6 The insulating coating and the protective coating may also be provided only at the position where the conductive coating is provided, the conductor 230 is a spiral conductive coating formed on the outside of the insulator 220; and / or the insulator 220 is a spiral insulating coating formed on the inside of the conductor 230; and / or the protective body 240 is a spiral protective coating formed on the outside of the conductor 230, the insulating coating is used to achieve insulation between the conductive coating and the heating substrate 210, and the protective coating is used to protect the conductive coating.

[0047] refer to Figure 1 The aerosol generating device further includes a mounting base 300 , which is mounted in the mounting cavity 110 and used to fix the heating element 200 . One end of the heating element 200 is mounted on the mounting seat, and the other end extends to be inserted into the aerosol forming matrix 500 .

[0048] In one embodiment, the aerosol generating device also includes a support member 400, which is arranged in the installation cavity 110 and on the installation base 300. The support member 400 includes a first end 410, a second end 420 and a placement cavity 430 formed between the first end 410 and the second end 420. The aerosol forming matrix 500 is inserted from the first end 410, and at least part of its structure is arranged in the placement cavity 430. The heating element 200 extends from the second end 420 to the first end 410, and can be inserted into the placement cavity 430 from the second end 420, and at least part of its structure is inserted into the aerosol forming matrix 500, so as to heat the aerosol matrix.

[0049] When in use, part of the structure of the suction section 510 of the aerosol-forming matrix 500 is arranged outside the placement cavity 430, and the heating element 200 is inserted into the matrix section 530 and located at the center of the matrix section 530.

[0050] The support member 400 has the capability of electromagnetic shielding and also has the capability of heat insulation, which can prevent the magnetic field generated by the heating element 200 when it is powered on from affecting other structures, and can also prevent heat from being conducted to other structures and affecting the operation of other structures. At the same time, it can conduct the internal heat inward along the outer side of the aerosol-forming matrix 500, and cooperate with the heating element 200 in the center (the heating element 200 is conducted from the center to the outside) to improve the heating efficiency.

[0051] Specifically, the support member 400 is adapted to the shape of the mounting cavity 110 structure and is a hollow tubular structure. The exterior is sealed and fitted with the mounting cavity 110. The aerosol-forming matrix 500 and the heating element 200 are respectively arranged at the two ends of the tubular structure, and the aerosol-forming matrix 500 is adapted to the structure of its placement cavity 430 to facilitate the insertion and removal of the aerosol-forming matrix 500 from the placement cavity 430. The support member 400 is detachably connected to the mounting base 300, and the heating element 200 is detachably connected to the mounting base 300, which facilitates the maintenance of the heating element 200.

[0052] Of course, in other embodiments, the support member 400 may not be placed, and the support base can fix and limit the heating element 200. When in use, the aerosol-forming matrix 500 is inserted into the installation cavity 110, and part of the structure of the heating element 200 is arranged in the aerosol-forming matrix 500. The aerosol-forming matrix 500 is positioned and installed and fixed by the heating element 200. A thermal insulation layer and a shielding layer are coated on the inner wall of the installation cavity 110, which can also achieve the effects of thermal insulation and electromagnetic shielding.

[0053] It should be noted that the term aerosol refers to a dispersion of solid particles or liquid particles in a gas. As used herein, "aerosol" can generally be used to refer to a substance that has been vaporized, atomized, in the form of a spray or jet, or otherwise converted from a solid or liquid form to an inhalable form containing suspended solid or liquid drug particles.

[0054] As used herein, the term "aerosol-forming substrate 500" refers to any suitable compound or mixture of compounds that facilitates the formation of an aerosol (e.g., a stable aerosol that substantially resists thermal degradation at the operating temperature of the system) in use. Suitable aerosol formers are well known in the art and include, but are not limited to: polyols, such as triethylene glycol, 1,3-butylene glycol, and glycerol; esters of polyols, such as glycerol mono-, di-, or triacetate; and aliphatic esters of mono-, di-, or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.

[0055] The aerosol-forming substrate 500 may include nicotine. The aerosol-forming substrate 500 may include water. The aerosol-forming substrate 500 may include glycerine (also referred to as glycerol) having a higher boiling point than nicotine. The aerosol-forming substrate 500 may include propylene glycol. The aerosol-forming substrate 500 may include plant-based materials. The aerosol-forming substrate 500 may include a homogenous plant-based material. The homogenous plant-based material may contain volatile compounds. These compounds may be released from the aerosol-forming substrate 500 when heated.

[0056] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. An aerosol generating device, characterized in that: include: A housing, wherein the housing has a mounting cavity for placing an aerosol-forming substrate; And a heating element, which is arranged in the installation cavity and at least partially inserted into the aerosol-forming matrix for heating. The heating element includes a stacked heating base, an insulator and a conductor. The heating base is embedded in the inner side of the insulator and extends along the insertion direction of the heating element. The conductor is spirally arranged on the outer side of the insulator. The conductor is used to generate an alternating magnetic field to heat the heating base when energized.

2. An aerosol generating device according to claim 1, characterized in that: The heat-generating substrate is constructed as a hollow rod-shaped, bar-shaped or needle-shaped structure with an opening at one end, and the opening is arranged to face away from the aerosol-forming substrate.

3. An aerosol generating device according to claim 1, characterized in that: The heating base includes a puncturing portion and an extending portion. Along the insertion direction of the heating body, the puncturing portion is arranged at one end of the extending portion and is used to be inserted into the aerosol forming matrix so that at least part of the extending portion is inserted into the aerosol forming matrix.

4. An aerosol generating device according to claim 3, characterized in that: The conductor extends from the connecting end of the puncturing portion and the extending portion to an end of the extending portion away from the puncturing portion, and the extending length of the conductor is less than or equal to the extending length of the extending portion.

5. An aerosol generating device according to claim 1, characterized in that: The heating element further includes a protection body, and the protection body is arranged on the outer side of the conductor.

6. An aerosol generating device according to claim 5, characterized in that: The insulator is an insulating coating formed on the outside of the heat-generating substrate; and / or the conductor is a spiral conductive coating formed on the outside of the insulator; and / or the protector is a protective coating formed on the outside of the conductor.

7. An aerosol generating device according to claim 5, characterized in that: The conductor is a spiral conductive coating formed on the outside of the insulator; and / or the insulator is a spiral insulating coating formed on the inside of the conductor; and / or the protector is a spiral protective coating formed on the outside of the conductor.

8. An aerosol generating device according to claim 6 or 7, characterized in that: The thickness of the insulating coating, the conductive coating and the protective coating are all less than 1 mm.

9. An aerosol generating device according to claim 1, characterized in that: The aerosol generating device further comprises a mounting base, which is mounted in the mounting cavity and is used for fixing the heating element.

10. An aerosol generating device according to claim 9, characterized in that: The aerosol generating device also includes a support member, which is arranged in the installation cavity and on the installation base. The support member includes a first end, a second end and a placement cavity formed between the first end and the second end. The aerosol forming matrix is ​​inserted from the first end, and at least a portion of its structure is arranged in the placement cavity. The heating element is inserted from the second end into the placement cavity, and at least a portion of its structure is inserted into the aerosol forming matrix, so as to heat the aerosol matrix.

Images