WO2021013039A1 - Heating assembly for aerosol generation device - Google Patents

Abstract

A heating assembly for an aerosol generation device comprises a base member (100) and an electric heating element (200). The base member (100) has a permeation surface and an aerosol release surface. The electric heating element (200) comprises a heat generating resistor circuit (210) and at least two electrically conductive circuits (220). Each of the electrically conductive circuits (220) is correspondingly connected to one end of the heat generating resistor circuit (210), and is used to connect a power supply, such that the heat generating resistor circuit (210) is energized. The electric heating element (200) is disposed at the aerosol release surface. The permeation surface is used to allow an aerosol-formation material to permeate, such that the aerosol-formation material is introduced to the electric heating element (200). The heat generating resistor circuit (210) generates heat while energized, and heats the aerosol-formation material to form an aerosol. The invention generates heat at the aerosol release surface by means of the heat generating resistor circuit (210) during energization, and in comparison with electrothermal alloy wires having a spiral structure, a heat generation temperature of the heat generating resistor circuit (210) is uniformly distributed, thereby solving the problem of conventional heating assemblies in which a heating temperature distribution is not uniform.

Description

Heating component of aerosol generating device Technical field

This application relates to an electronic heating assembly, and more particularly to a heating assembly applied to a heating type aerosol generating device.

Background technique

Traditional heating type aerosol generators generally use electric heating alloy wires to form a heating element with a spiral structure combined with a porous matrix to form a heating assembly. It has the advantages of simple process and low cost, so it is widely used. However, the spiral heating element exists There are many defects of its own. For example, when the temperature is low at both ends and high in the middle, it is prone to local high temperature, so it needs improvement.

technical problem

The present application provides a heating component of an aerosol generating device to solve the problem of uneven heating temperature distribution of traditional heating components.

Technical solutions

The present application provides a heating component of an aerosol generating device to solve the problem of uneven heating temperature distribution of traditional heating components.

The heating component of an aerosol generating device provided by the present application includes: a substrate having an infiltration surface and an aerosol releasing surface; and an electric heating element, including a heating resistor circuit and at least two conductive circuits; each conductive circuit is connected to the heating One end of the resistance circuit is correspondingly connected to connect a power source to energize the heating resistance circuit; the electric heating element is arranged on the aerosol release surface, and the infiltration surface is used for the aerosol matrix to penetrate to guide the aerosol matrix On the electric heating element, the heating resistor circuit generates heat when energized, and heats the aerosol substrate to form an aerosol.

As a further improvement of the heating assembly, the aerosol release surface is a flat surface, and the heating resistance circuit extends in the same plane to form at least one resistance track.

As a further improvement of the heating assembly, the heating resistance circuit and the conductive circuit are both hollowed out of metal plates.

As a further improvement of the heating assembly, the electric heating element further includes a lead wire, one end of the lead wire is connected to the conductive circuit, and the other end is used to connect the electrode of the power source; the conductive circuit has a first opening on the side, and the The conductive line is bent from the first opening.

As a further improvement of the heating assembly, there are two conductive circuits, which are respectively located at two ends of the heating resistor circuit.

As a further improvement of the heating assembly, the width of the conductive circuit is greater than the width of the heating resistor circuit.

As a further improvement of the heating assembly, the base body is provided with a second opening, and the side of the second opening facing the heating resistor circuit is the aerosol releasing surface.

As a further improvement of the heating assembly, the edge of the heating resistance circuit is at least partially embedded in the inner wall of the second opening.

As a further improvement of the heating assembly, the matrix is a porous matrix permeable to the aerosol matrix.

As a further improvement of the heating assembly, the side wall of the substrate is provided with through holes for the release of aerosol, and/or for the aerosol substrate to be conducted to the electric heating element.

Beneficial effect

The heating component of an aerosol generating device provided by this application includes a base body and an electric heating element. The base body has an infiltration surface and an aerosol release surface; the electric heating element includes a heating resistor circuit and at least two conductive circuits; each conductive circuit is connected to the heating element. One end of the resistance circuit is correspondingly connected to connect the power supply to energize the heating resistance circuit; the electric heating element is arranged on the aerosol release surface, and the infiltration surface is used for the aerosol matrix to penetrate, so as to guide the aerosol matrix to the electric heating element to generate heat The resistance circuit generates heat when energized, and heats the aerosol substrate to form an aerosol. When energized, heat is generated on the aerosol release surface through the heating resistor circuit. Compared with the spiral structure of the electric heating alloy wire, the heating temperature of the heating resistor circuit is evenly distributed, which solves the problem of uneven heating temperature distribution of traditional heating components.

Description of the drawings

Figure 1 is a perspective view of a heating assembly in an embodiment of the application;

Figure 2 is a top view of a heating component in an embodiment of the application;

Figure 3 is a cross-sectional view of Figure 2 of the application;

4 is a schematic diagram of the structure of an electric heating element in an embodiment of the application;

FIG. 5 is a schematic diagram of the structure of an electric heating element and a lead in an embodiment of the application;

Fig. 6 is a schematic structural diagram of a heating assembly in another embodiment of the application;

Figure 7 is a cross-sectional view of Figure 5 of the application;

FIG. 8 is a schematic structural diagram of an electric heating element in another embodiment of the application;

Fig. 9 is a top view of a heating assembly in a third embodiment of the application.

Reference signs: 100, base body; 110, second opening; 200, electric heating element; 210, heating resistance circuit; 220, conductive circuit; 221, first opening; 300, lead.

Embodiments of the invention

Hereinafter, the present application will be further described in detail through specific implementations in conjunction with the accompanying drawings, wherein similar elements in different implementations adopt associated similar element numbers. In the following embodiments, many detailed descriptions are used to make the present application better understood. However, those skilled in the art can easily realize that some of the features can be omitted under different circumstances, or can be replaced by other elements, materials, and methods. In some cases, some operations related to this application are not shown or described in the specification. This is to avoid the core part of this application being overwhelmed by excessive descriptions. For those skilled in the art, these operations are described in detail. The related operations are not necessary, they can fully understand the related operations according to the description in the manual and the general technical knowledge in the field.

In addition, the features, operations, or features described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be exchanged or adjusted in order in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and the drawings are only for the purpose of clearly describing a certain embodiment, and are not meant to be a necessary order, unless it is otherwise stated that a certain order must be followed.

The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application, unless otherwise specified, include direct and indirect connection (connection).

This embodiment provides a heating component of an aerosol generating device.

Please refer to FIGS. 1-3, the heating assembly includes a base 100 and an electric heating element 200.

Referring to FIGS. 1-3, the base 100 has an infiltration surface and an aerosol releasing surface.

1 and 2, in this embodiment, the base 100 is cylindrical, one end surface of the base 100 is the aerosol release surface, and the side surface of the base 100 or the end surface opposite to the aerosol release surface can be used as the infiltration surface. Please refer to FIG. 6, in other embodiments, the base 100 can also be configured into a cube or other suitable shapes, and the positions of the infiltration surface and the aerosol release surface can also be flexibly set according to actual conditions.

4, the heating element 200 includes a heating resistance circuit 210 and at least two conductive circuits 220; each conductive circuit 220 is correspondingly connected to one end of the heating resistance circuit 210 for connecting to a power source so that the heating resistance circuit 220 is energized.

It should be noted that the shape of the heating element 200 in FIG. 1 is slightly different from the shape of the heating element 200 in FIG. 2 because the heating element 200 can be selected in different shapes in different embodiments to meet actual needs. Therefore, not only It can only be used as a perspective view of the embodiment shown in FIG. 2 or as a perspective view of other embodiments, as long as the shape of the base 100 is cylindrical. For example, FIG. 1 can also be used as a perspective view of the embodiment shown in FIG. 9.

The electric heating element 200 is arranged on the aerosol release surface, and the infiltration surface is used for the aerosol matrix to penetrate to guide the aerosol matrix to the electric heating element 200. The heating resistor circuit 210 generates heat when energized and heats the aerosol matrix to form aerosol. Sol. Specifically, "the electric heating element 200 is arranged on the aerosol releasing surface" may mean that the surface of the electric heating element 200 is connected to the surface of the aerosol releasing surface, or the electric heating element 200 is partially or completely embedded in the aerosol releasing surface.

When energized, the heating resistor circuit 210 generates heat on the aerosol release surface. Compared with the spiral structure of the electric heating alloy wire, the heating temperature of the heating resistor circuit 210 is evenly distributed, which solves the uneven temperature distribution of the spiral structure of the electric heating alloy wire and easy local temperature The problem is too high. In addition, the strength of the spiral structure is low, which causes the spiral heating element to be easily deformed during the molding process with the porous substrate, resulting in unstable structure of the heating element, and poor consistency during the mass production of the product. The heating resistance circuit 210 is set in the air The sol release surface has a more stable structure and higher strength, which solves the problems of low strength and unstable structure of traditional heating components, and also makes the product consistency stronger in the mass production process.

Please refer to Figure 4, Figure 8 and Figure 9, showing the different routing structure of the heating resistance circuit 210 and the conductive circuit 220 in three different embodiments, please refer to Figure 2 and Figure 4, Figure 4 in the heating resistance circuit 210 The line method is matched with the cylindrical base 100 in Fig. 2; please refer to Figs. 6-8. The routing method of the heating resistor circuit 210 in Fig. 8 is used to match the rectangular parallelepiped base 100 in Figs. 6 and 7; please refer to Fig. 9, The routing method of the heating resistor circuit 210 in FIG. 9 is used to cooperate with the cylindrical base 100. The routing of the heating resistor circuit 210 and the conductive circuit 220 can be changed according to the shape of the substrate 100, the position of the aerosol release surface, and the different heating temperature requirements, so as to realize the diversification of the routing and the difference of the resistance to improve the temperature The problem of uneven distribution improves energy utilization. Specifically, the length and shape of the heating resistance circuit 210 can be changed to make the heating resistance circuit 210 have a desired resistance value.

Please refer to FIGS. 1-3. In an embodiment, the aerosol release surface is a plane, and the heating resistor lines extend in the same plane to form at least one resistor track.

4 and 5, in an embodiment, the heating resistor circuit 210 and the conductive circuit 220 are both hollowed out of metal plates.

Specifically, the heating resistor circuit 210 and the conductive circuit 220 can be formed by hollowing out the same metal plate, or by hollowing out and connecting different plates. When different plates are used, the different plates can be made of the same metal material or Different metal materials.

When the heating resistance circuit 210 and the conductive circuit 220 are formed by different plates, the conductive circuit 220 and the heating resistance circuit 210 can be welded or riveted. When different metal materials are selected for the conductive circuit 220 and the heating resistance circuit 210, the heating resistance circuit 210 can be made of a high-resistance electrothermal alloy, and the conductive circuit 220 can be a metal material with a low resistivity, preferably nickel.

When the heating resistance circuit 210 and the conductive circuit 220 are hollowed out of the same metal plate, the heating resistance circuit 210 and the conductive circuit 220 are integrally formed, so that the structural stability of the electric heating element 200 is better.

Please refer to FIG. 5, in an embodiment, the heating element 200 further includes a lead 300, one end of the lead 300 is connected to the conductive circuit 220, and the other end is used to connect the electrode of the power source; the conductive circuit 220 has a first opening 221 on its side , The conductive circuit 220 is bent from the first opening 221. The connection between the conductive circuit 220 and the power electrode is realized by the lead 300.

Specifically, referring to FIG. 5, the lead 300 may be a nickel lead, and the bending angle of the conductive circuit 220 and the lead 300 may be 90° or other suitable angles. It is convenient to realize the connection between the lead 300 and the power source.

In other embodiments, the lead 300 may not be used, but any position on the conductive circuit 220 is used as an electrode contact, and the electrode contact is connected to the power electrode through contact.

Please refer to FIG. 5. In an embodiment, there are two conductive circuits 220, which are located at two ends of the heating resistor circuit 210 respectively.

4 and 5, the width of the conductive circuit 220 is greater than the width of the heating resistor circuit 210.

On the one hand, when the material is the same, since the width of the heating resistance circuit 210 is small, the resistance value of the heating resistance circuit 210 is larger. When the power is turned on, the heating resistance circuit 210 generates more heat, making the temperature of the heating resistance circuit 210 higher than The conductive line 220 is high, and the conductive line 220 is used for conducting electricity, and it may not be needed to generate heat. On the other hand, the width of the conductive circuit 220 is large, which is beneficial to realize the connection between the conductive circuit 220 and the power electrode. Specifically, when the lead is used, the conductive circuit can be fully connected to the lead. When the lead is not used, the conductive circuit serves as the electrode. The reliability of the connection between the contact and the power electrode is better.

Specifically, referring to FIGS. 4 and 5, the heating resistance circuit 210 and the conductive circuit 220 meander and extend in the same plane. The direction in which the heating resistance circuit 210 extends is the length direction of the heating resistance circuit 210. The direction perpendicular to the length direction is the width direction of the heating resistor circuit 210, the direction in which the conductive circuit 220 extends is the length direction of the conductive circuit 220, and the direction perpendicular to the length of the conductive circuit 220 in the plane is the width direction of the conductive circuit 220.

The metal sheet can be processed by chemical etching or mechanical processing to form the heating resistance circuit 210 and the conductive circuit 220. The metal plate can be a thin plate, and the material of the metal plate can be a high-resistance electric heating alloy, which includes, but is not limited to, iron-chromium aluminum alloy, nickel-chromium alloy or stainless steel, preferably iron-chromium aluminum alloy.

Referring to FIGS. 1-3, in an embodiment, the base 100 is provided with a second opening 110, and the side of the second opening 110 facing the heating resistor circuit 210 is an aerosol releasing surface.

In an embodiment, the edge of the heating resistor circuit 210 is at least partially embedded in the inner wall of the second opening 110.

The edge of the heating resistor circuit 210 is reinforced by the base 100 to ensure that the edge of the heating resistor circuit 210 will not be warped during the process of constant cooling and heating. The aerosol is released through the second opening 110.

In one embodiment, the matrix 100 is a porous matrix permeable to the aerosol matrix. The aerosol matrix can penetrate into the heating resistor circuit 210 through the base 100. Specifically, the material of the base 100 includes at least one of porous ceramics and porous glass. Preferably it is a porous ceramic.

In an embodiment, the base 100 is formed by thermoplastic molding and integrated with the heating element 200 as a whole. Specifically, in the production process, the formed electric heating element 200 is first put into a mold, and then the slurry for forming the base 100 is injected into the mold, and finally put into a high-temperature furnace for sintering, so that the base 100 and the electric heating element 200 are formed As one.

In an embodiment, the side wall of the base 100 is provided with through holes (not shown in the figure) for the aerosol to be released, and/or for the aerosol substrate to be conducted to the electric heating element 200.

When the base 100 is a porous base, the through holes can speed up the conduction of the aerosol matrix to the heating element 200, and can also be used to release aerosols. When the base 100 is a dense base of impermeable aerosol matrix, the through holes can be used with liquid guides (such as oil guide cotton, porous ceramics or porous glass), and the aerosol matrix on the liquid guide is conducted to the electric heating element through the through holes On 200, through holes can also be used to release aerosols.

The above content is a further detailed description of this application in combination with specific implementations, and it cannot be considered that the specific implementation of this application is limited to these descriptions. For those of ordinary skill in the technical field to which this application belongs, several simple deductions or substitutions can be made without departing from the inventive concept of this application.

Claims (10)

A heating component of an aerosol generating device, characterized in that it comprises: A matrix having an infiltration surface and an aerosol releasing surface; and The electric heating element includes a heating resistance circuit and at least two conductive circuits; each conductive circuit is correspondingly connected to one end of the heating resistance circuit, and is used to connect to a power source so that the heating resistance circuit is energized; The electric heating element is arranged on the aerosol release surface, and the infiltration surface is used for infiltrating the aerosol matrix to guide the aerosol matrix to the electric heating element. The sol matrix is heated to form an aerosol. To The heating assembly of claim 1, wherein the aerosol release surface is a flat surface, and the heating resistance lines extend in the same plane to form at least one resistance track. 5. The heating assembly according to claim 1, wherein the heating resistance circuit and the conductive circuit are both hollowed out of metal plates. The heating assembly of claim 1, wherein the electric heating element further comprises a lead wire, one end of the lead wire is connected to the conductive circuit, and the other end is used to connect the electrode of the power source; the conductive circuit has a side An opening, and the conductive circuit is bent from the first opening. To The heating assembly according to claim 1, wherein there are two conductive circuits, which are respectively located at two ends of the heating resistor circuit. To The heating assembly according to any one of claims 1 to 5, wherein the width of the conductive circuit is greater than the width of the heating resistor circuit. To The heating assembly of claim 1, wherein the base body is provided with a second opening, and the side of the second opening facing the heating resistor circuit is the aerosol release surface. To 8. The heating assembly according to claim 7, wherein the edge of the heating resistor circuit is at least partially embedded in the inner wall of the second opening. To The heating assembly of claim 1, wherein the substrate is a porous substrate permeable to an aerosol substrate. The heating assembly according to claim 1 or 9, wherein the side wall of the substrate is provided with through holes for releasing aerosol, and/or for the aerosol substrate to be conducted to the electric heating element. To