CN115530438A

CN115530438A - Aerosol generating device and heating device thereof

Info

Publication number: CN115530438A
Application number: CN202211153262.2A
Authority: CN
Inventors: 呙于波; 梁峰; 金祖涛
Original assignee: Shenzhen Maishi Technology Co Ltd
Current assignee: Shenzhen Maishi Technology Co Ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-30
Also published as: WO2024060721A1

Abstract

The invention relates to an aerosol generating device and a heating device thereof, wherein the heating device is used for the aerosol generating device and comprises: the heating device comprises a base body, a first heating device and a second heating device, wherein the base body comprises at least two heating areas, and a first partition for blocking heat transfer is arranged between every two adjacent heating areas; and at least two heating layers respectively arranged on the at least two heating areas. According to the invention, the first partition is arranged between every two adjacent heating areas, so that the heat transfer between at least two heating areas can be reduced.

Description

Aerosol generating device and heating device thereof

Technical Field

The invention relates to the field of heating non-combustible appliances, in particular to an aerosol generating device and a heating device thereof.

Background

An aerosol generating device is an electronic device for use in a manner by which an aerosol generating substrate (a solid substrate such as a plant leaf product such as tobacco) is heated without burning it. The core component of an aerosol-generating device is a heating device which enables the aerosol-generating substrate to produce the aerosol desired by the user without combustion by heating the aerosol-generating substrate to a temperature at which the aerosol can be generated but is not sufficiently combustible.

Heating device among the correlation technique includes the base member and sets up the layer that generates heat of two regional or multizone timesharing segmentation heating on the base member, and this base member is a whole, and when the layer that generates heat heated aerosol in a section region and produced the matrix, the heat of heating section can be very fast transmit to adjacent region that need not heat, lead to the heat to scatter and disappear to increase the consumption.

Disclosure of Invention

The invention aims to provide an improved aerosol generating device and a heating device thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: a heating device comprises a base body, wherein at least two sections of heating areas and a first partition which is arranged between the two adjacent heating areas and used for blocking heat transfer between every two adjacent heating areas are arranged on the base body.

In some embodiments, the base is cylindrical.

In some embodiments, the at least two heating zones are distributed in the axial direction of the substrate.

In some embodiments, the first partition comprises at least one cut extending through the inner and outer surfaces of the base and extending circumferentially of the base.

In some embodiments, the first partition comprises a plurality of through holes penetrating through the inner surface and the outer surface of the base body and distributed at intervals along the circumferential direction of the base body.

In some embodiments, the material of the substrate comprises a metal or a ceramic.

In some embodiments, the heating device further includes an insulating layer, the insulating layer includes at least two insulating portions, the at least two insulating portions are respectively disposed on outer surfaces of the at least two heating regions, and the at least two heating layers are respectively disposed on outer surfaces of the at least two insulating portions.

In some embodiments, a second partition is disposed between each two insulation portions, and the second partition corresponds to the first partition.

In some embodiments, the heating device further comprises a protective layer, wherein the protective layer comprises at least two protective parts, and the at least two protective parts respectively cover the at least two heat generating layers.

In some embodiments, a third partition is disposed between each two protection portions, and the third partition corresponds to the first partition.

In some embodiments, the at least two heat generating layers are respectively disposed outside the at least two heating regions.

In some embodiments, the heating device comprises at least two further heat generating layers arranged inside the at least two heating zones, respectively.

In some embodiments, the at least two heating zones are cylindrical and integrally connected.

In some embodiments, the at least two heat generating layers include a resistance film layer, and the at least two heat generating layers are spiral.

In some embodiments, the base further comprises a fixing region provided at an end of the base, the fixing region being integrally connected to the heating region.

The invention also provides an aerosol generating device comprising a heating device as described in any of the above.

The invention has the beneficial effects that: according to the invention, the first partition is arranged between every two adjacent heating areas, so that the heat transfer between at least two heating areas can be reduced.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

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

FIG. 2 is a schematic perspective view of a heating device of the aerosol generating device shown in FIG. 1;

FIG. 3 is an exploded view of the heating apparatus shown in FIG. 2;

FIG. 4 is a partial schematic view of a first partition of the heating apparatus shown in FIG. 3;

FIG. 5 is a schematic cross-sectional view of an exploded view of the heating apparatus of FIG. 3;

fig. 6 is a schematic perspective view of the heating device shown in fig. 3, in which the heat generating layer is disposed on the base.

Detailed Description

For a more clear understanding of the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "longitudinal," "axial," "length," "width," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings or the orientations and positional relationships in which the products of the present invention are conventionally placed during use, which are merely for convenience in describing and simplifying the present invention, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two segments, e.g., two segments, three segments, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Figure 1 shows an aerosol-generating device 1 and an aerosol-generating substrate 2 removably inserted into one end of the aerosol-generating device 1 in some embodiments of the invention. The aerosol-generating device 1 may be in the form of a square column in some embodiments for the convenience of a user's hand, which may be used to apply low-temperature baking heat to an aerosol-generating substrate 2 inserted therein to release aerosol extract from the aerosol-generating substrate 2 in a non-combustible state. The aerosol-generating substrate 2 may in some embodiments be cylindrical in shape and may comprise a treated plant leaf solid aerosol-generating substrate. It is understood that the aerosol generating device 1 is not limited to a square cylinder, but may have other shapes such as a cylinder, an elliptic cylinder, etc. in other embodiments.

The aerosol-generating device 1 may in some embodiments comprise a heating device 10 and a housing 20 for carrying the heating device 10. The heating device 10 may be cylindrical in some embodiments and may allow the aerosol-generating substrate 2 to be removably inserted therein to heat bake the aerosol-generating substrate 2 from the periphery. The aerosol generating device 1 may also include a battery (not shown) disposed within the housing 20 in some embodiments. The battery is electrically connected to the heating device 10 to supply power to the heating device 10.

Referring to fig. 2 and 5 together, the heating device 10 may include a base 11, an insulating layer 12 disposed on an outer surface of the base 11, two heat generating layers 13 disposed on outer surfaces of the insulating layer 12, and a protective layer 14 disposed on outer surfaces of the two heat generating layers in some embodiments. It is understood that the number of the heat generating layers 13 may be more than two.

The base body 11 may be cylindrical in some embodiments and may be made of a metal material, and includes two heating regions integrally connected in an axial direction, and a first partition 113 disposed between the two heating regions, specifically, the two heating regions include a first heating region 111 and a second heating region 112, and a first partition 113 is disposed between the first heating region 111 and the second heating region 112. When the first heating area 111 heats and the second heating area 112 does not heat, the first partition 113 can reduce heat transfer from the heat of the first heating area 111 to the second heating area 112, thereby reducing heat loss of the first heating area 111, further improving heating efficiency of the first heating area 111, and reducing power consumption. Meanwhile, when the first heating area 111 is heated and the second heating area 112 is not heated, the temperature of the first heating area 111 can be rapidly increased, so that the preheating time is reduced; further, since the first heating region 111 is fixed, the area of the heated medium is reduced, and the aerosol-generating substrate can be rapidly heated in a small area, thereby increasing the concentration of the aerosol. Similarly, when the second heating area 112 heats and the first heating area 111 does not heat, the first partition 113 can reduce the heat transfer from the heat of the second heating area 112 to the first heating area 111, thereby reducing the heat loss of the second heating area 112, further improving the heating efficiency of the second heating area 112, and reducing the power consumption. Meanwhile, when the second heating area 112 is heated and the first heating area 111 is not heated, the temperature of the second heating area 112 can be rapidly increased, so that the preheating time is reduced; further, due to the fixation of the second heating region 112, the area of the heated medium is reduced, and thus the aerosol generating substrate can be rapidly heated in a small area, and the aerosol concentration is increased. In some embodiments, two heat generating layers 13 are respectively disposed outside the two heating regions, and two other heat generating layers 13 may also be respectively disposed outside the two heating regions. It is to be understood that the base body 11 is not limited to the cylindrical shape, and may have other shapes such as a square cylinder shape, a regular polygon cylinder shape, and the like. It should be understood that the base 11 is not limited to the cylindrical shape, and may have other shapes such as a sheet shape. It should be understood that the base 11 is not limited to be made of a conductive material such as metal, but may be made of a non-metallic material such as thermally conductive ceramic. It is understood that the number of the heating zones is not limited to two, and may be three or more, and a first partition 113 is disposed between every two adjacent heating zones.

The first partition 113 may include a plurality of slits in some embodiments, each slit extending through the inner and outer surfaces of the substrate 11, such that the slits have a better thermal insulation effect. In some embodiments, the slot may be strip-shaped and have an extended length. Each slit extends along the circumferential direction of the cylindrical base 11, and a plurality of slits are uniformly spaced along the circumferential direction of the cylindrical base 11. It is understood that each first partition 113 may also include only one slot. In other embodiments, the cutting grooves may not extend through the inner and outer surfaces of the cylindrical base 11, for example, the cutting grooves may extend from the outer surface of the cylindrical base 11 to the inner surface but not through the inner surface. It will be understood that the more space the first partition 113 occupies on the base 11, the better the heat insulation effect, but too much may result in insufficient structural strength of the base 11 and affect the heating effect. In other embodiments, the number and size of the cutting grooves may be designed according to the material, thickness, etc. of the substrate 11.

In some embodiments, the first partition 113 may include a plurality of through-holes (not shown) distributed axially along the substrate 11. Each of which penetrates the inner and outer surfaces of the base 11. It is to be understood that the shape of the through-hole is not limited, and it may be various shapes such as a circle, an ellipse, a square, or a triangle. It can be understood that the arrangement of the plurality of through holes can be set as required. It is understood that the first partition 113 may be implemented by a cutting groove and/or a through hole, and may also be implemented by other ways, which are not limited herein.

The insulating layer 12 may cover the outer surface of the substrate 11 in some embodiments, and includes a first insulating portion 121 and a second insulating portion 122, and the first insulating portion 121 and the second insulating portion 122 cover the first heating region 111 and the second heating region 112, respectively. A second partition 123 is provided between the first insulating portion 121 and the second insulating portion 122, and the size, shape, and position of the second partition 123 correspond to the size, shape, and position of the first partition 113. The insulating layer 12 may be formed by one of dip coating, sintering, magnetron sputtering, and spray coating, and covers the outer surface of the substrate 11. Specifically, the insulating layer 12 may also be a ceramic film formed by a casting process in some embodiments, the heat generating layer 13 is silk-screened on the insulating layer 12, then the ceramic film is wound on the base 11 with the heat generating layer 13 on the side opposite to the base 11, and then the ceramic film and the heat generating layer 13 are sintered on the base 11. It is understood that when the substrate 11 is made of a non-metallic material such as a thermally conductive ceramic, the insulating layer 12 may not be provided.

The heat generating layer 13 may be a spiral resistance film layer in some embodiments, and includes a first heat generating layer and a second heat generating layer, which are respectively bonded to the first insulating portion 121 and the second insulating portion 122 by silk-screen printing or the like, so as to realize the sectional heating of the aerosol generating substrate. The first and second heat generating layers may be distributed along the axial direction of the tubular substrate 11 so as to heat the aerosol-generating substrate in stages in the axial direction thereof. It is to be understood that the first and second heat generation layers may also be distributed along the circumferential direction of the base 11. When voltage is applied to the two poles of the heating layer 13, current generates heat through the heating layer 13, and baking and heating of the aerosol generating substrate are achieved. It is to be understood that the structural form of the heat generating layer 13 is not limited, and it may be, for example, a heat generating film, a metal heat generating wire, a metal heat generating sheet, or a metal heat generating mesh. It is to be understood that the heat generating layers 13 are not limited to two, and may be three or more.

The protection layer 14 may include a first protection part 141 and a second protection part 142, which cover the two heat generating layers 13, respectively, in some embodiments. In some embodiments, the protective layer 14 may be formed by glazing with a glass frit or ceramic paint, or the like. The protective layer 14 can reduce the erosion effect of oxygen and impurities on the heating layer 13, and prolong the service life of the heating layer. In some embodiments, the outer surface of the protective layer 14 may be provided with a third partition 143, the shape, size and location of the third partition 143 corresponding to the shape, size and location of the first partition 113.

Referring to fig. 6 together, in some embodiments, the base 11 may further include a fixing region 114 disposed at an end of the base 11, the fixing region 114 being integrally connected to the second heating region 112, the fixing region 114 being used to achieve the fixing of the base 11. It is understood that in other embodiments, the fixing region 114 and the second heating region 112 in the substrate 11 can be made of two parts, and at the same time, the fixing region 114 can be made of a material with low heat capacity and low thermal conductivity, such as PEEK or ceramic material; the second heating region 112 may be made of a material with high thermal conductivity, so as to reduce the heat transfer from the second heating region 112 to the fixing region 114.

It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several changes and modifications 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 equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims

1. A heating device for an aerosol generating device, comprising:

the heating device comprises a base body and a heating device, wherein the base body comprises at least two heating areas, and a first partition for blocking heat transfer is arranged between every two adjacent heating areas; and

and the at least two heating layers are respectively arranged on the at least two heating areas.

2. The heating device of claim 1, wherein the base is cylindrical.

3. The heating device as claimed in claim 2, wherein the at least two heating zones are distributed in the axial direction of the substrate.

4. The heating device of claim 3, wherein the first partition comprises at least one slot extending through the inner and outer surfaces of the substrate and extending circumferentially of the substrate.

5. The heating apparatus as claimed in claim 3, wherein the first partition comprises a plurality of through holes penetrating the inner and outer surfaces of the base body and being spaced apart from each other in a circumferential direction of the base body.

6. A heating device as claimed in claim 3, characterized in that the material of the base body comprises a metal or a ceramic.

7. The heating apparatus as claimed in claim 6, further comprising an insulating layer including at least two insulating portions respectively provided on outer surfaces of the at least two heating areas, and at least two heat generating layers respectively provided on outer surfaces of the at least two insulating portions.

8. The heating device of claim 7, wherein a second partition is provided between each two insulating portions, the second partition corresponding to the first partition.

9. The heating device according to claim 7, further comprising a protective layer including at least two protective portions respectively covering the at least two heat generating layers.

10. The heating device according to claim 9, wherein a third partition is provided between each two protecting portions, the third partition corresponding to the first partition.

11. The heating apparatus as claimed in claim 3, wherein the at least two heat generating layers are disposed outside the at least two heating areas, respectively.

12. A heating device as claimed in claim 11, characterized in that the heating device comprises at least two further heat-generating layers which are arranged respectively inside the at least two heating zones.

13. The heating apparatus as claimed in claim 3, wherein the at least two heating zones are cylindrical and integrally connected.

14. The heating apparatus as claimed in claim 1, wherein the base body further includes a fixing region provided at an end of the base body, the fixing region being integrally connected to the heating region.

15. The heating device according to claim 1, wherein the at least two heat generating layers include a resistance film layer, and the at least two heat generating layers are in a spiral shape.

16. An aerosol generating device comprising a heating device according to any one of claims 1 to 15.