CN217184856U

CN217184856U - Electromagnetic heating assembly and aerosol generating device

Info

Publication number: CN217184856U
Application number: CN202121000881.9U
Authority: CN
Inventors: 梁峰; 陈俊梁; 周亚林
Original assignee: Shenzhen Maishi Technology Co Ltd
Current assignee: Shenzhen Maishi Technology Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-08-16
Anticipated expiration: 2031-05-11

Abstract

The utility model relates to an electromagnetic heating subassembly and aerosol generating device, the electromagnetic heating subassembly is including two at least dull and stereotyped coils that are used for producing induction field and being used for receiving induction field and the thermal heat-generating body that produces, two at least dull and stereotyped coils set up in the periphery of heat-generating body. The at least two flat coils can be alternately heated to match with various different heating modes, so that the heating body can heat more omnidirectionally.

Description

Electromagnetic heating assembly and aerosol generating device

Technical Field

The utility model relates to an atomizing field, more specifically say, relate to an electromagnetic heating subassembly and aerosol generating device.

Background

The heating non-combustion type atomizing device is an aerosol generating device which heats atomizing materials to form aerosol through a low-temperature heating non-combustion mode, and most of the heating non-combustion type atomizing device adopts resistance heating or electromagnetic induction heating.

The existing aerosol generating device adopting electromagnetic induction heating is mostly single-coil, the heating form of a single-coil product is single, only a heating body can be integrally heated or not heated, and the heating area cannot be flexibly controlled.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the present invention is to provide an improved electromagnetic heating assembly and an aerosol generating device having the same, which are directed to the above-mentioned defects of the prior art.

The utility model provides a technical scheme that its technical problem adopted is: an electromagnetic heating assembly is constructed, and comprises at least two flat coils used for generating an induction magnetic field and a heating body used for receiving the induction magnetic field to generate heat, wherein the at least two flat coils are arranged on the periphery of the heating body.

In some embodiments, the at least two plate coils include N pairs of plate coils, each pair of the plate coils being disposed on two opposite sides of the heat generating body, respectively.

In some embodiments, each pair of the flat coils is symmetrically disposed on two opposite sides of the heating element, and the directions of the induced magnetic fields generated by each pair of the flat coils are the same.

In some embodiments, when N is greater than or equal to 2, the N pairs of flat coils are respectively distributed on 2N side surfaces of the regular 2N polygonal pillar.

In some embodiments, the central axis of the regular 2N-sided polygonal cylinder coincides with the central axis of the heating element.

In some embodiments, the flat coils are spiral flat coils, and a spiral center of each flat coil is respectively coincident with a center of a corresponding side of the positive 2N-sided polygonal cylinder.

In some embodiments, the flat coil and the heat generating body have a gap therebetween.

In some embodiments, the electromagnetic heating assembly further comprises a magnetic shielding layer disposed outside the at least two flat-plate coils.

In some embodiments, the magnetic shielding layer is a ferrite shielding layer.

In some embodiments, the magnetic shielding layer is sheet-shaped and is respectively arranged on the outer surface of each flat coil; or the magnetic shielding layer is annular and is sleeved on the peripheries of the at least two flat coils.

In some embodiments, each of the flat coils is individually connected to the control circuit through two leads.

In some embodiments, the flat coil is spiral, one of the leads is led out from the center of the flat coil, and the other lead is led out from the outer side of the flat coil.

In some embodiments, the flat coil is helical, and both leads are led out from the outer side of the flat coil.

In some embodiments, the heat-generating body is in the form of a sheet, a column, a needle, or a cylinder.

The utility model also provides an aerosol generating device, including above-mentioned arbitrary electromagnetic heating subassembly.

Implement the utility model discloses following beneficial effect has at least: the utility model provides an electromagnetic heating subassembly includes two at least dull and stereotyped coils, and these two at least dull and stereotyped coil alternate heating can arrange the heating methods of multiple difference, make the heat-generating body generate heat more omnidirectionally.

In addition, the direction of the induced magnetic field generated by a pair of flat coils respectively arranged on two opposite sides of the heating element is the same, and the direction has an enhancement effect on the magnetic field of the heating element positioned in the middle.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic perspective view of an aerosol generating device according to some embodiments of the present invention in a use state;

figure 2 is a schematic perspective view of the aerosol-generating device of figure 1 in a state in which it is separated from the aerosol-generating substrate;

FIG. 3 is a schematic sectional view of the aerosol generating apparatus of FIG. 2;

FIG. 4 is a schematic perspective view of the heating assembly of FIG. 3;

FIG. 5 is a schematic view of the arrangement of the flat plate coils of the heating assembly of FIG. 4;

fig. 6 is a schematic structural diagram of a flat coil according to another embodiment of the present invention;

FIG. 7 is a schematic distribution diagram of a first alternative to the flat-plate coil shown in FIG. 5;

fig. 8 is a schematic distribution diagram of a second alternative to the flat-plate coil shown in fig. 5.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1-3 illustrate an aerosol-generating device 100 according to some embodiments of the present invention, which aerosol-generating device 100 may be used for low temperature bake heating of an aerosol-generating substrate 7 inserted therein to release aerosol extract from the aerosol-generating substrate 7 in a non-combustible state. As shown, the aerosol-generating device 100 may be generally square cylindrical and the aerosol-generating substrate 7 may be a cylindrical rod. The top of the aerosol-generating device 100 is provided with a socket 20 shaped and dimensioned to fit the aerosol-generating substrate 7. The top of the aerosol generating device 100 may also be provided with a dust cap 6 for covering or uncovering the receptacle 20. When the aerosol generating device 100 is not required to be used, the dust cap 6 can be pushed to shield the socket 20, so as to prevent dust from entering the socket 20. When required for use, the dust cap 6 is pushed to expose the socket 20 so that the aerosol-generating substrate 7 is inserted from the socket 20. It is to be understood that the aerosol generating device 100 is not limited to the square column shape, and may have other shapes such as a cylindrical shape and an elliptic cylindrical shape.

The aerosol generating device 100 may include a housing 2, and an electromagnetic heating assembly 1, a main board 3, a battery 4, and an extraction pipe 5 disposed in the housing 2. The inner wall surface of the extraction tube 5 defines a receiving space 50 for receiving the aerosol-generating substrate 7, the aerosol-generating substrate 7 being insertable into the receiving space 50 via the socket 20. The battery 4 is electrically connected with the main board 3, the main board 3 is electrically connected with the electromagnetic heating component 1, and the main board 3 controls the on-off between the two by means of a switch so as to provide corresponding electric energy to heat the electromagnetic heating component 1.

The electromagnetic heating assembly 1 may include a heating body 11 and at least two flat coils 12 disposed at the periphery of the heating body 11. The flat coil 12 is connected with a control circuit of the main board 3, the control circuit can provide high-frequency alternating current for the flat coil 12, and the flat coil 12 can generate an induction magnetic field after being electrified. The heat generating body 11 is capable of receiving the induced magnetic field to generate heat and transfer the heat to the aerosol-generating substrate 7, thereby effecting a baking heating of the aerosol-generating substrate 7. The heating element 11 can be made of stainless steel, iron, copper, nickel and other high temperature resistant metal materials.

In this embodiment, the heating element 11 is a needle-like heating element, the upper end of which extends into the accommodating space 50 and can be inserted into the aerosol-generating substrate 7 through a tapered needle at the upper end thereof to be in close contact with the aerosol-generating substrate 7, thereby baking and heating the aerosol-generating substrate 7. The at least two flat coils 12 are arranged at the periphery of the extraction tube 5. In other embodiments, the heating element 11 may have other shapes such as a cylindrical shape, a square cylindrical shape, and a sheet shape. In other embodiments, the heating element 11 may also be a hollow cylinder, the heating element 11 is also an extraction tube, the inner wall surface of the heating element 11 defines a receiving space for receiving the aerosol-generating substrate 7, and the heating element 11 is wrapped around the aerosol-generating substrate 7 and is in close contact with the aerosol-generating substrate 7 to bake and heat the aerosol-generating substrate 7.

The flat coil 12 may be a vertically arranged spiral flat coil, which may be formed by spirally winding a wire. In some embodiments, the flat coil 12 may be made of litz wire, i.e., the wire used to wind the flat coil 12 is formed by stranding or braiding a plurality of thin wires.

The at least two flat-plate coils 12 may include N pairs of flat-plate coils 12, where N is an integer greater than or equal to 1. Each pair of flat coils 12 are symmetrically disposed on two opposite sides of the heating element 11, and the directions of the induced magnetic fields generated by each pair of flat coils 12 are the same, so as to enhance the magnetic field of the heating element 11 in the middle. Further, when N is greater than or equal to 2, the N pairs of flat coils 12 may be respectively distributed on 2N side surfaces of the regular 2N polygonal pillars. The spiral center of each flat coil 12 can coincide with the center of the corresponding side of the regular 2N polygonal column respectively, and the central axis of the heating element 11 can coincide with the central axis of the regular 2N polygonal column.

A certain gap is formed between each flat coil 12 and the heating element 11, so that the heating element 11 is positioned at a position with relatively high magnetic field intensity, the heating efficiency is improved, and the heat insulation between the flat coil 12 and the heating element 11 is facilitated. In addition, a magnetic shielding layer, such as a ferrite shielding layer, may be disposed outside the flat coil 12 to improve electromagnetic compatibility and prevent false heating. The magnetic shielding layer can be in a sheet shape and is respectively arranged on the outer surface of each flat coil 12; alternatively, the magnetic shielding layer may also be annular and is sleeved on the periphery of the at least two flat coils 12.

The electromagnetic heating assembly 1 may further include a heating base 13 disposed at a lower portion of the heating body 11 in some embodiments. The heating base 13 may be used to fix the heating body 11 and the flat coil 12, and the lower end of the heating body 11 may be inserted into the heating base 13. The heating base 13 can be made of high temperature resistant plastic or ceramic material.

As shown in fig. 4 to 5, the electromagnetic heating assembly 1 in the present embodiment includes four flat plate coils 12 having a circular flat plate shape. The four flat coils 12 may be divided into two pairs, the

flat coils

12a and 12b respectively located on the front and rear sides of the heating body 11 constitute a pair of flat coils 12, the

flat coils

12c and 12d respectively located on the left and right sides of the heating body 11 constitute a pair of flat coils 12, and each pair of flat coils 12 is symmetrically disposed on two opposite sides of the heating body 11. It is understood that in other embodiments, the flat coil 12 may have other regular or irregular shapes such as a square, a triangle, a polygon, an ellipse, a fan, a circular arc, etc.

Two leads 121 can be led out of each flat coil 12 to be connected with a control circuit independently, so that each flat coil 12 can control heating independently, and therefore the plurality of flat coils 12 can be controlled to work alternately or partially according to use requirements, and different heating modes can be matched. For example, in order to heat the heating element 11 more omnidirectionally, the four plate coils 12 may be operated alternately to generate a magnetic field, thereby generating a special heating sequence. For another example, the four flat coils 12 may be operated in the following sequence: the flat coil 12a, the flat coil 12b, the flat coil 12c and the flat coil 12d sequentially and circularly work; or, the flat coil 12a and the flat coil 12b operate simultaneously, the flat coil 12c and the flat coil 12d operate simultaneously, and cycle sequentially; alternatively, the flat coil 12a, the flat coil 12c, the flat coil 12b, and the flat coil 12d are sequentially circulated.

Each flat coil 12 may be formed by spirally winding a conducting wire from outside to inside or from inside to outside, the winding direction may be clockwise or counterclockwise, and the two leads 121 of the flat coil 12 are respectively connected to two ends of the conducting wire. One of the two lead wires 121 may be led out through the center of the flat coil 12, and the other may be led out through the outer side of the flat coil 12.

In this embodiment, the four flat coils 12 are respectively distributed on the front, rear, left, and right sides of the square cylinder S1, the spiral center of each flat coil 12 is respectively coincident with the center of the corresponding side of the square cylinder S1, and the central region S2 located at the center of the square cylinder S1 is a region where the heating element 11 is placed.

Fig. 6 shows a flat coil 12 according to another embodiment of the present invention, in which the flat coil 12 in this embodiment can be wound into a spiral shape from outside to inside and then from inside to outside, and both leads 121 of the flat coil 12 are led out from the outside of the flat coil 12.

Fig. 7 shows an electromagnetic heating assembly 1 in a first alternative of the present invention, and the electromagnetic heating assembly 1 in this embodiment includes a heat-generating body 11 and two flat coils 12 symmetrically disposed on two opposite sides of the heat-generating body 11.

Fig. 8 shows an electromagnetic heating assembly 1 in a second alternative of the present invention, where the electromagnetic heating assembly 1 in this embodiment includes a heating body 11 and three pairs of flat coils 12 arranged on the periphery of the heating body 11. The three pairs of plate coils 12 are respectively distributed on six side faces of the regular hexagonal cylinder S3. The spiral center of each flat coil 12 coincides with the center of the corresponding side of the regular hexagonal cylinder S3, respectively, and the central region S4 at the center of the regular hexagonal cylinder S3 is a region where the heat generating body 11 is placed.

It is to be understood that the above-described respective technical features may be used in any combination without limitation.

The above examples only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The electromagnetic heating assembly is characterized by comprising at least two flat coils for generating an induction magnetic field and a heating body for receiving the induction magnetic field to generate heat, wherein the at least two flat coils are arranged on the periphery of the heating body.

2. The electromagnetic heating assembly according to claim 1, wherein said at least two flat coils comprise N pairs of flat coils, each pair of said flat coils being disposed on two opposite sides of said heat generating body, respectively.

3. The electromagnetic heating assembly of claim 2, wherein each pair of flat coils are symmetrically disposed on two opposite sides of the heating body, and the directions of the induced magnetic fields generated by each pair of flat coils are the same.

4. The electromagnetic heating assembly of claim 2, wherein when N is greater than or equal to 2, the N pairs of flat coils are respectively distributed on 2N side surfaces of the regular 2N polygonal cylinder.

5. The electromagnetic heating assembly according to claim 4, wherein the central axis of the right 2N-sided polygonal cylinder coincides with the central axis of the heating body.

6. An electromagnetic heating assembly according to claim 4, wherein the plate coils are spiral plate coils, and the spiral center of each plate coil is coincident with the center of the corresponding side of the regular 2N-sided polygonal column.

7. An electromagnetic heating assembly as claimed in any one of claims 1 to 6, wherein there is a gap between the flat coil and the exothermic body.

8. An electromagnetic heating assembly according to any of claims 1-6, further comprising a magnetic shielding layer disposed outside the at least two flat coils.

9. An electromagnetic heating assembly according to claim 8, wherein the magnetic shielding layer is a ferrite shielding layer.

10. The electromagnetic heating assembly according to claim 8, wherein the magnetic shielding layer is sheet-shaped and is disposed on an outer surface of each of the flat coils; or the magnetic shielding layer is annular and is sleeved on the peripheries of the at least two flat coils.

11. An electromagnetic heating assembly as claimed in any one of claims 1 to 6 wherein each of said flat coils is individually connected to a control circuit by two leads.

12. An electromagnetic heating assembly according to claim 11 wherein said flat coil is helical, one of said leads extending from the center of said flat coil and the other of said leads extending from the outer side of said flat coil.

13. An electromagnetic heating assembly according to claim 11 wherein the flat coil is helical and both leads are led out from the outside of the flat coil.

14. The electromagnetic heating assembly according to any one of claims 1 to 6, wherein the heating body has a sheet shape, a columnar shape, a needle shape, or a cylindrical shape.

15. An aerosol generating device comprising an electromagnetic heating assembly as claimed in any of claims 1 to 12.