Aerosol generating device and heating assembly thereof

Abstract

The utility model discloses an aerosol generating device and a heating assembly thereof. The heating assembly comprises a conductive heating body, a first conductive layer and a second conductive layer, wherein the first conductive layer and the second conductive layer are used for connecting electrode leads; the conductive heating body is provided with a first surface, a second surface and a plurality of air guide channels, the first surface and the second surface are arranged back to back in the axial direction of the conductive heating body, and the air guide channels penetrate through the conductive heating body in the axial direction; the first conductive layer comprises a first main body part covering the first surface, the second conductive layer comprises a second main body part covering the second surface, the area of the first main body part is smaller than that of the first surface, and the area of the second main body part is smaller than or equal to that of the second surface. Due to the fact that the heat generated by the conductive heating body located between the first main body part and the second main body part directly heats the flowing airflow, compared with the technical scheme that the heat generated by a metal heating resistor is transmitted to a ceramic body, the heat transmission process is shortened, heat loss is reduced, and the heat utilization rate is increased.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generating devices, and in particular to an aerosol generating device and a heating component thereof. Background Art

[0002] For aerosol generating devices, the heating methods are generally divided into contact heating and non-contact heating. Among them, the most common non-contact heating method is air heating, that is, heating the air to form hot air, and then introducing the hot air into the aerosol generating matrix to achieve heating and atomization.

[0003] In the related art, the structure of the air heating component used to form hot air is mostly a ceramic body with a metal heating resistor as a heat source, that is, a metal heating resistor (such as a metal heating wire, a metal heating film, etc.) is attached to the inner wall of the hollow ceramic body, and the heat generated by the metal heating resistor is used to heat the air flowing through the internal cavity of the ceramic body during operation, thereby forming hot air for heating the aerosol generating matrix. However, this type of air heating component generally has the following disadvantages:

[0004] The air heating component using metal heating resistor as the heat source needs the metal heating resistor to heat the inner wall of the ceramic body first after power is turned on, and then the heat will radiate outward to heat the air passing through. The heat transfer involves a conduction process from the metal heating resistor to the ceramic body, so there will be more heat loss. Utility Model Content

[0005] The present application provides a heating component and an aerosol generating device, aiming to solve the technical problems of the existing heating components such as the long energy transfer process and high heat loss.

[0006] According to the first aspect, an embodiment provides a heating assembly, comprising a conductive heating element and a first conductive layer and a second conductive layer for connecting an electrode lead;

[0007] The conductive heating element has a first surface, a second surface and a plurality of air guide channels, the first surface and the second surface are arranged opposite to each other in the axial direction of the conductive heating element, and the air guide channels are arranged through the conductive heating element along the axial direction;

[0008] The first conductive layer includes a first main body portion, which is covered on the first surface; the second conductive layer includes a second main body portion, which is covered on the second surface; the area of ​​the first main body portion is smaller than the area of ​​the first surface; and the area of ​​the second main body portion is smaller than or equal to the area of ​​the second surface.

[0009] In one embodiment, the first surface has a first heating area and a first blank area except the first heating area, and the first blank area is arranged around the first heating area;

[0010] The first main body is covered in the first heating zone, at least part of the ports of the air guide channel on the first surface are located in the first heating zone, and the area of ​​the first main body is smaller than or equal to the area of ​​the first heating zone.

[0011] In one embodiment, the geometric center of the first main body coincides with the geometric center of the first surface, or the geometric center of the first main body and the geometric center of the first surface have a preset distance in the radial direction of the conductive heating element.

[0012] In one embodiment, the first main body has at least two first conductive units, and the first conductive units are arranged at intervals in a form of being connected to each other.

[0013] In one embodiment, the conductive heating element further has a third surface, which surrounds the conductive heating element along a circumference thereof and is connected between the first surface and the second surface;

[0014] The first conductive layer also includes a first extension portion covering the surface of the conductive heating element, the first extension portion has two opposite ends, one end of the first extension portion is connected to the first main body portion, and the other end of the first extension portion extends to the third surface for connecting the electrode lead.

[0015] In one embodiment, the second surface includes a second heating area and a second blank area except the second heating area, and the second blank area is arranged around the second heating area;

[0016] The second main body is covered on the second heating area and / or the second blank area.

[0017] In one embodiment, the orthographic projection of the second main body portion on the first surface covers at least a portion of the first main body portion; or in the radial direction of the conductive heating element, the orthographic projection of the second main body portion on the first surface has a preset distance from the first main body portion.

[0018] In one embodiment, the orthographic projection of the second main body portion on the first surface covers the first main body portion, and the area of ​​the orthographic projection is larger than the area of ​​the first main body portion; or the orthographic projection of the second main body portion on the first surface is distributed around the first main body portion.

[0019] In one embodiment, a line connecting the geometric center of the second main body portion and the geometric center of the first main body portion is a first line, and the first line is parallel to, coincides with, or intersects at an angle with the geometric center line of the conductive heating element.

[0020] In one embodiment, the conductive heating element further has a third surface, which surrounds the conductive heating element along a circumference thereof and is connected between the first surface and the second surface;

[0021] The second conductive layer further includes a second extension portion, one end of the second extension portion is connected to the second main body portion, and the other end of the second extension portion extends to the third surface for connecting the electrode lead.

[0022] In one embodiment, the first conductive layer and the second conductive layer are both silver paste layers or gold paste layers printed on the surface of the conductive heating element, and / or the conductive heating element is conductive ceramic.

[0023] According to the second aspect, an embodiment provides an aerosol generating device, comprising the above-mentioned heating component.

[0024] According to the heating component and aerosol generating device of the above-mentioned embodiment, the first main body is covered on the first surface, and the second main body is covered on the second surface. When current is passed, the first main body, the second main body and the conductive heating element located between the first main body and the second main body form a continuous circuit. Based on the Joule effect, the conductive heating element located between the first main body and the second main body generates heat; by arranging a plurality of air guide channels through the conductive heating element, the heat generated by the conductive heating element located between the first main body and the second main body directly heats the airflow passing through. Compared with the technical solution in which a metal heating resistor generates heat and transfers it to a ceramic body, the heat transfer process is shortened, heat loss is reduced, and heat utilization is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of an aerosol generating device according to an embodiment of the present invention having an aerosol generating substrate disposed therein;

[0026] Figure 2 for Figure 1 A cross-sectional view of an aerosol generating device is shown;

[0027] Figure 3 A schematic diagram of the assembly structure of a conductive heating element and a first conductive layer according to an embodiment;

[0028] Figure 4 A schematic diagram of the assembly structure of a conductive heating element and a second conductive layer according to an embodiment;

[0029] Figure 5A schematic structural diagram of a conductive heating element according to an embodiment;

[0030] Figure 6 It is a schematic diagram of the assembly structure of a conductive heating element, a first main body and a second main body according to an embodiment;

[0031] Figure 7 It is a schematic diagram of the assembly structure of a conductive heating element, a first main body and a second main body according to an embodiment;

[0032] Figure 8 It is a schematic diagram of the assembly structure of a conductive heating element, a first main body and a second main body according to an embodiment;

[0033] Fig. 9 It is a schematic diagram of the assembly structure of a conductive heating element, a first main body and a second main body according to an embodiment;

[0034] Fig.10 A schematic diagram of the assembly structure of a conductive heating element and a first main body portion according to an embodiment;

[0035] Fig.11 A schematic structural diagram of a conductive heating element according to an embodiment;

[0036] Fig.12 It is a schematic diagram of the assembly structure of a conductive heating element, a first main body and a second main body in one embodiment.

[0037] In the figure:

[0038] 100, heating component; 10, conductive heating element; 11, first surface; 111, first heating zone; 112, first blank zone; 12, second surface; 121, second heating zone; 122, second blank zone; 13, air guide channel; 14, third surface; 20, first conductive layer; 21, first main body; 211, first conductive unit; 211a, first central conductive unit; 211b, first non-central conductive unit; 22, first extension; 30, second conductive layer; 31, second main body; 32, second extension; 40, heat conductor; 41, accommodating chamber; 42, preheating chamber; 51, first electrode lead; 52, second electrode lead; 60, sleeve; 70, support member; 200, power supply; 300, circuit board; 400, housing; 500, aerosol generating matrix. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] The serial numbers assigned to 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 include direct and indirect connections (couplings) unless otherwise specified. Figures 6 to 9 as well as Fig.12 The dotted line in the figure represents the heat-generating body.

[0042] See also Figure 1 and Figure 2 As shown, this embodiment provides a heating component 100 and an aerosol generating device, the heating component 100 is applied to the aerosol generating device, and the aerosol generating device can generate aerosol by heating an atomizable aerosol generating matrix 500 (for example, medicine, tobacco, fragrance, etc. in the form of solid, liquid or solid-liquid mixed state) through the heating component 100. Aerosol is a colloidal dispersion system composed of small solid or liquid particles dispersed and suspended in a gas medium.

[0043] In the present application, the aerosol generating substrate 500 is heated by the heating component 100, so that the aerosol generating substrate 500 generates aerosol in the form of heating without combustion. No open flame is generated during the heating process, which is more environmentally friendly. While providing users with a good user experience, it can reduce the harmful substances produced by high-temperature decomposition of conventional atomization substrates during combustion.

[0044] See also Figures 2 to 4The heating component 100 provided in this embodiment includes a conductive heating element 10 and a first conductive layer 20 and a second conductive layer 30 for connecting electrode leads; the conductive heating element 10 has a first surface 11 and a second surface 12, and the first surface 11 and the second surface 12 are arranged opposite to each other in the axial direction of the conductive heating element 10; the first conductive layer 20 includes a first main body 21, and the first main body 21 is covered on the first surface 11, and the second conductive layer 30 includes a second main body 31, and the second main body 31 is covered on the second surface 12, the area of ​​the first main body 21 is smaller than the area of ​​the first surface 11, and the area of ​​the second main body 31 is smaller than or equal to the area of ​​the second surface 12.

[0045] When current is passed through, the first body 21 , the second body 31 , and the conductive heating element 10 between the first body 21 and the second body 31 form a continuous circuit, and based on the Joule effect, the conductive heating element 10 between the first body 21 and the second body 31 generates heat.

[0046] See also Figure 1 and Figure 3 The conductive heating element 10 is also provided with a plurality of air guide channels 13, which are arranged to penetrate the conductive heating element 10 in the axial direction. The airflow needs to pass through the air guide channels 13 of the conductive heating element 10 before flowing to the aerosol generating substrate 500. When the airflow flows through the air guide channels 13, the heat generated by the conductive heating element 10 can directly heat the airflow to generate a hot airflow, which enters the aerosol generating substrate 500 to heat the aerosol generating substrate 500.

[0047] By adopting the above technical solution, the conductive heating element 10 located between the first main body 21 and the second main body 31 generates heat based on the Joule effect, and directly heats the airflow passing through. Compared with the solution in which the metal heating resistor generates heat and transfers it to the ceramic body, the heat transfer process is shortened, the heat loss is reduced, and the heat utilization rate is increased.

[0048] See also Figures 2 to 4 In this embodiment, two electrode leads are provided, namely a first electrode lead 51 and a second electrode lead 52. One end of the first electrode lead 51 is electrically connected to the first conductive layer 20, and the other end is connected to the positive or negative electrode of the power supply. One end of the second electrode lead 52 is electrically connected to the second conductive layer 30, and the other end is connected to the negative or positive electrode of the power supply.

[0049] The heating assembly 100 provided in the present application is heated by resistance heating. To ensure that the conductive heating element 10 has a high resistivity, the resistance between the first surface 11 and the second surface 12 of the conductive heating element 10 is set between 0.1Ω and 10Ω. In addition, the thermal conductivity of the conductive heating element 10 is set to be greater than 10W / (k*m) to ensure that the conductive heating element 10 has better thermal conductivity. The conductive heating element 10 can be made of high resistivity electric heating materials including but not limited to conductive ceramics, nickel-chromium alloys, iron-chromium alloys, etc.

[0050] The first conductive layer 20 and the second conductive layer 30 can be made of low resistivity materials to avoid excessive loss after the current passes through, further improving the utilization rate of the current. Among them, the low resistivity material includes but is not limited to gold and silver. In addition, the first conductive layer 20 and the second conductive layer 30 can be arranged on the surface of the conductive heating element 10 by printing or coating. In this embodiment, the first conductive layer 20 and the second conductive layer 30 are made by printing silver paste on the surface of the conductive heating element 10.

[0051] In this embodiment, the polarity of the power supply connected to the first conductive layer 20 and the second conductive layer 30 as well as the parameters such as voltage and current are not limited and can be set according to specific implementation scenarios.

[0052] See also Figures 1 to 4 The heating component 100 also includes a heat conductor 40, which is a hollow tubular structure. At least one of the first surface 11 and the second surface 12 is located in the heat conductor 40, and one of the first surface 11 and the second surface 12 and the heat conductor 40 are enclosed to form a receiving cavity 41 for receiving the aerosol generating matrix 500.

[0053] A heat conductor 40 is provided, and the heat conductor 40 can absorb the heat generated by the conductive heating element 10. One of the first surface 11 and the second surface 12 and the heat conductor 40 enclose a receiving cavity 41. The aerosol generating matrix 500 is received in the receiving cavity 41. The heat conductor 40 can heat the circumference of the aerosol generating matrix 500, thereby making full use of the heat energy and improving the heating and baking efficiency. In addition, the air guide channel 13 in the present application is directly connected to the receiving cavity 41. After the hot air flows out of the air guide channel 13, it directly flows into the aerosol generating matrix 500 located in the receiving cavity 41, further making full use of the heat energy.

[0054] In this embodiment, the first surface 11 and the second surface 12 are both located in the heat conductor 40, the first surface 11 and the heat conductor 40 enclose a receiving cavity 41, and the second surface 12 and the heat conductor 40 enclose a preheating cavity 42. The heat conductor 40 absorbs the heat generated by the conductive heating element 10, which can heat the circumference of the aerosol generating matrix 500 on the one hand, and preheat the airflow in the preheating cavity 42 on the other hand, greatly improving the utilization rate of thermal energy. In addition, by providing the preheating cavity 42, when the heating component 100 is assembled with other components of the aerosol generating device (such as the support member 70 described below), the side of the conductive heating element 10 provided with the second surface 12 will not directly contact other components of the aerosol generating device, thereby avoiding damage to other components of the aerosol generating device due to excessive temperature of the conductive heating element 10. It can be understood that in other embodiments, the first surface 11 and the heat conductor 40 enclose a preheating cavity 42, and the second surface 12 and the heat conductor 40 enclose a receiving cavity 41.

[0055] See also Figure 3 and Figure 5 In one embodiment, the first surface 11 has a first heating area 111 and a first blank area 112 other than the first heating area 111. The first blank area 112 is arranged around the first heating area 111. The first main body 21 is covered in the first heating area 111. At least part of the ports of the air guide channel 13 on the first surface 11 are located in the first heating area 111, and the area of ​​the first main body 21 is less than or equal to the area of ​​the first heating area 111. The first blank area 112 refers to the edge area of ​​the first surface 11.

[0056] When current is applied, the first body 21, the second body 31, and the conductive heating element 10 between the first body 21 and the second body 31 form a continuous circuit, and based on the Joule effect, the conductive heating element 10 between the first body 21 and the second body 31 generates heat. For ease of understanding and description, the conductive heating element 10 between the first body 21 and the second body 31 is defined as a heat-generating element.

[0057] The first main body 21 is covered in the first heating area 111 so that the first main body 21 is arranged away from the edge of the first surface 11, so that the heat generating body is at one end of the first surface 11 away from the edge of the first surface 11, so that the heat generating body as a whole can be located in the middle of the conductive heating body 10 or the heat generating body as a whole can be close to the middle of the conductive heating body 10. When current is passed, the heat generating body generates heat. At this time, the temperature of the middle part or the part close to the middle of the conductive heating body 10 is high, while the temperature of the part at the edge of the conductive heating body 10 is relatively low. The heat can be transferred from the middle to the surroundings. Compared with the heat transfer from the surroundings to the middle, this heat conduction method shortens the energy transfer process and reduces heat loss; and when the airflow flows through the conductive heating body 10, it is usually concentrated in the air guide channel 13 located in the middle of the conductive heating body 10. By making the middle part or the part close to the middle of the conductive heating body 10 generate heat first, it is more in line with the matching of airflow and energy.

[0058] The middle portion of the conductive heating element 10 refers to a region centered on the geometric center line M of the conductive heating element 10 .

[0059] In one embodiment, the geometric center of the first main body 21 coincides with the geometric center of the first surface 11. In this way, the heat generating body is located at the middle of the conductive heating body 10 at one end of the first surface 11, which helps to make the heat generating body as a whole located in the middle of the conductive heating body 10 or make the heat generating body as a whole closer to the middle of the conductive heating body 10, thereby improving the uniformity of heat conduction to the surroundings. Among them, the geometric center of the first surface 11 is set to coincide with the geometric center M of the conductive heating body 10. In specific applications, the geometric center of the first surface 11 and the geometric center M of the conductive heating body 10 can also be set to not coincide.

[0060] See also Figure 6 and Figure 7 , the geometric center of the first main body portion 21 coincides with the geometric center of the first surface 11, and the second main body portion 31 is disposed in a different area of ​​the second surface 12. Figure 6 In the embodiment, the heat generating body is a vertically arranged columnar structure, which is located in the middle of the conductive heating body 10; and Figure 7 In the embodiment, the heat generating body is an inclined columnar structure, and one end of the columnar structure is located in the middle of the conductive heating body 10 at the first surface 11 .

[0061] In one embodiment, the geometric center of the first main body 21 and the geometric center of the first surface 11 have a preset distance in the radial direction of the conductive heating element 10. When this embodiment is adopted, the heat generating element is located between the middle and edge positions of the conductive heating element 10, and when the aerosol generating substrate 500 is heated, the heating is performed away from the middle, thereby slowing down the speed of aerosol release from the other side of the aerosol generating substrate 500 and increasing the use time of the aerosol generating substrate 500.

[0062] See also Figure 1 , Figure 2 and Figure 8 For example, the first main body 21 is arranged on the right side of the geometric center of the first surface 11, and the heat generating body is a columnar structure arranged on the right side of the middle of the conductive heating body 10. When the aerosol generating matrix 500 is heated by this heating component 100, the speed of releasing aerosol from the left side of the aerosol generating matrix 500 can be slowed down, thereby increasing the use time of the aerosol generating matrix 500.

[0063] In one embodiment, the first main body 21 has at least two first conductive units 211, and each first conductive unit 211 is arranged at intervals in a form of being connected to each other. At this time, a plurality of parallel circuits can be formed. In a specific application, when a plurality of parallel circuits are formed, the resistance of each circuit is set to be greater than or equal to 0.1Ω. In addition, it should be noted that when the first main body 21 is provided with a plurality of first conductive units 211, the shapes and areas of each first conductive unit 211 may be the same, or different, or partially the same and partially different. In a specific application, the number of first conductive units 211 of the first main body 21 may be two, three, four, or the like.

[0064] For further information, see Fig. 9 In one embodiment, the geometric center of one of the plurality of first conductive units 211 coincides with the geometric center of the first surface 11 .

[0065] By adopting the above technical solution, the heat generating body between the first conductive unit 211 and the second main body 31 is located in the middle of the conductive heating body 10 at one end of the first surface 11, which helps to make the heat generating body as a whole located in the middle of the conductive heating body 10 or make the heat generating body as a whole closer to the middle of the conductive heating body 10, thereby improving the uniformity of heat conduction to the surroundings.

[0066] It can be understood that in other embodiments, the geometric centers of the plurality of first conductive units 211 may also have a preset distance from the geometric center of the first surface 11 in the radial direction of the conductive heating element 10 .

[0067] The first conductive unit 211 whose geometric center coincides with the geometric center of the first surface 11 is defined as the first central conductive unit 211a, and the other first conductive units 211 are defined as the first non-central conductive units 211b. Fig. 9 and Fig.10 In one embodiment, at least one first non-central conductive unit 211b is disposed around the circumference of the first central conductive unit 211a.

[0068] By setting the first central conductive unit 211a, the heat generating body located between the first central conductive unit 211a and the second main body 31 is located in the middle of the conductive heating body 10 at one end of the first surface 11, which helps to make the heat generating body as a whole located in the middle of the conductive heating body 10 or make the heat generating body as a whole closer to the middle of the conductive heating body 10, thereby improving the uniformity of heat conduction to the surroundings.

[0069] By arranging the first non-center conductive unit 211b around the circumference of the first center conductive unit 211a, the heat generating body between the first non-center conductive unit 211b and the second main body 31 can form a ring shape and surround the middle part of the conductive heating body 10. The heat generated by the heat generating body can be transferred from the middle part to the surroundings and from the surroundings to the middle part, thereby improving the thermal conductivity efficiency.

[0070] The shapes and areas of the first conductive units 211 may be the same or different, or partly the same and partly different, and the first non-central conductive units 211b may be arranged in different ways around the circumference of the first central conductive unit 211a. Fig. 9 As shown, the first non-central conductive unit 211b is provided with a ring-shaped ring arranged around the circumference of the first central conductive unit 211a; Fig.10 As shown, there are four first non-central conductive units 211b, which are arranged in a ring around the first central conductive unit 211a at intervals. It should be noted that the arrangement of the first non-central conductive units 211b surrounding the first central conductive unit 211a is not limited by the drawings.

[0071] See also Figure 4 and Fig.11 In one embodiment, the second surface 12 includes a second heating area 121 and a second blank area 122 except the second heating area 121, and the second blank area 122 is arranged around the second heating area 121; the second main body 31 covers the second heating area 121 and / or the second blank area 122. The second blank area 122 refers to the edge area of ​​the second surface 12.

[0072] The second main body 31 is covered in the second heating area 121, and the second main body 31 can be arranged away from the edge of the second surface 12, so that the heat generating body is away from the edge of the second surface 12 at one end of the second surface 12, so that the heat generating body is located in the middle of the conductive heating body 10 or the heat generating body is further close to the middle of the conductive heating body 10. When current is passed, the heat generating body generates heat. At this time, the temperature of the middle part or the part close to the middle of the conductive heating body 10 is high, while the temperature of the part of the edge area of ​​the conductive heating body 10 is relatively low. The heat can be transferred from the middle to the surroundings. Compared with the method of transferring from the surroundings to the middle, this heat conduction method shortens the energy transfer process and reduces heat loss; and when the airflow flows through the conductive heating body 10, it is usually concentrated in the air guide channel 13 located in the middle of the conductive heating body 10. By making the middle part or the part close to the middle of the conductive heating body 10 generate heat first, it is more in line with the matching of airflow and energy.

[0073] The second main body 31 is covered on the second blank area 122, and the second main body 31 is located at the edge of the second surface 12, so that the heat generator is located at the edge of the second surface 12 at one end of the second surface 12, and the heat generator as a whole can be located at the edge of the conductive heating element 10 or the heat generator as a whole is close to the edge of the conductive heating element 10. When the heat generator generates heat, one side of the aerosol generating substrate 500 can be heated, thereby slowing down the speed of releasing aerosol from the other side of the aerosol generating substrate 500, and increasing the use time of the aerosol generating substrate 500.

[0074] It should be noted that the arrangement of the first main body 21 on the first surface 11 and the arrangement of the second main body 31 on the second surface 12 do not affect each other. In other words, the first main body 21 can be covered on the first surface 11 in any way, and the second main body 31 can be covered on the second surface 12 in any way. When current is passed, the conductive heating element 10 between the first main body 21 and the second main body 31 generates heat, which can directly heat the airflow passing through the conductive heating element 10, shorten the heat transfer process, and reduce heat loss.

[0075] In particular, when the first main body 21 is covered in the first heating area 111, no matter what shape the second main body 31 is, where it is located, or how it is arranged, at least the heat generating body is at one end of the first surface 11 away from the edge of the first surface 11. When the heat generating body generates heat, the heat can be transferred to the surroundings, which can shorten the energy transfer process and reduce heat loss.

[0076] In one embodiment, the orthographic projection of the second main body portion 31 on the first surface 11 covers at least a portion of the first main body portion 21, and may cover it partially or completely. Figure 6 and Fig. 9 , the orthographic projection of the second main body portion 31 on the first surface 11 completely covers the first main body portion 21, Figure 6 In the example, the heat generating body is a vertical cylindrical structure. Fig. 9 In the embodiment, the heat generating body is a cylindrical structure with a hollow tubular structure on the periphery; please refer to Figure 7 The orthographic projection of the second main body portion 31 on the first surface 11 covers a portion of the first main body portion 21 , and the heat generating body is an inclined cylindrical structure.

[0077] It is understandable that in other embodiments, in the radial direction of the conductive heating element 10 , the orthographic projection of the second main body portion 31 on the first surface 11 may have a preset distance from the first main body portion 21 .

[0078] Further, in one embodiment, the orthographic projection of the second main body portion 31 on the first surface 11 covers the first main body portion 21, and the area of ​​the orthographic projection is larger than the area of ​​the first main body portion 21. Fig.12 At this time, the heat generating body has a truncated cone structure.

[0079] In one embodiment, the orthographic projection of the second main body portion 31 on the first surface 11 may also be distributed around the first main body portion 21 .

[0080] The line connecting the geometric center of the second main body 31 and the geometric center of the first main body 21 is the first line. Depending on the different configurations of the first main body 21 and the second main body 31, the first line and the geometric center line M of the conductive heating element 10 may be parallel, coincident, or cross at an angle. For example, Figure 6 In the figure, the first connecting line coincides with the geometric center line M of the conductive heating element 10. Figure 7 In the figure, the first connecting line intersects the geometric center line M of the conductive heating element 10 at an angle. Figure 8 In the figure, the first connecting line is parallel to the geometric center line M of the conductive heating element 10.

[0081] See also Figure 2 and Figure 3 The conductive heating element 10 also has a third surface 14, which is surrounded along the circumference of the conductive heating element 10 and connected between the first surface 11 and the second surface 12; the first conductive layer 20 also includes a first extension portion 22 covered on the surface of the conductive heating element 10, and the first extension portion 22 has two opposite ends, one end of the first extension portion 22 is connected to the first main body portion 21, and the other end of the first extension portion 22 extends to the third surface 14 for connecting the electrode lead. Specifically, the other end of the first extension portion 22 is used to connect the first electrode lead 51.

[0082] The third surface 14 is disposed toward the tube wall of the heat conductor 40 . When the electrode lead is connected to the first extension portion 22 , it only needs to be connected to the third surface 14 , and does not need to be connected to the first surface 11 , thereby avoiding affecting the insertion of the aerosol generating matrix 500 into the accommodating cavity 41 .

[0083] See also Figure 2 and Figure 4 The second conductive layer 30 further includes a second extension portion 32, one end of the second extension portion 32 is connected to the second main body portion 31, and the other end of the second extension portion 32 extends to the third surface 14 for connecting the electrode lead. Specifically, the other end of the second extension portion 32 is used to connect the second electrode lead 52. With such a configuration, when the conductive heating element 10 and the heat conductor 40 are assembled, the conductive heating element 10 can be directly assembled with the heat conductor 40, without considering whether the conductive layer on the side facing the accommodating cavity 41 extends to the third surface 14, thereby improving assembly efficiency.

[0084] See also Figure 2 The heating assembly 100 further includes a sleeve 60 and a support member 70, the support member 70 is supported on the heat conductor 40, and the conductive heating element 10, the heat conductor 40 and part of the support member 70 are located in the sleeve 60. The sleeve 60 and the support member 70 are made of high temperature resistant and low thermal conductivity materials including but not limited to high temperature resistant plastics, PEEK, ceramics, glass, etc., which are both resistant to high temperatures and have a heat preservation effect to prevent heat loss.

[0085] Please refer to Figures 1 to 4 The aerosol generating device provided in this embodiment includes a power supply 200, a circuit board 300, a housing 400 and the above-mentioned heating component 100. The power supply 200, the circuit board 300 and the heating component 100 are all placed in the housing 400. The power supply 200 is used to electrically connect with the first conductive layer 20 and the second conductive layer 30. The circuit board 300 is used to control the heating power of the heating component 100 to ensure the heating effect on the aerosol generating matrix 500. In a specific application, the power supply 200 is electrically connected with the first electrode lead 51 and the second electrode lead 52 to achieve electrical connection with the first conductive layer 20 and the second conductive layer 30.

[0086] In summary, the heating component 100 and the aerosol generating device provided in this embodiment are covered on the first surface 11 by the first main body 21, and the second main body 31 is covered on the second surface 12. When current is passed, the first main body 21, the second main body 31 and the conductive heating element 10 located between the first main body 21 and the second main body 31 form a continuous circuit. Based on the Joule effect, the conductive heating element 10 located between the first main body 21 and the second main body 31 generates heat; by providing a plurality of air guide channels 13 through the conductive heating element 10, the heat generated by the conductive heating element 10 located between the first main body 21 and the second main body 31 directly heats the airflow passing through. Compared with the technical solution in which a metal heating resistor generates heat and transfers it to a ceramic body, the heat transfer process is shortened, heat loss is reduced, and heat utilization is increased.

[0087] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A heating component, characterized in that: It includes a conductive heating element and a first conductive layer and a second conductive layer for connecting electrode leads; The conductive heating element has a first surface, a second surface and a plurality of air guide channels, the first surface and the second surface are arranged opposite to each other in the axial direction of the conductive heating element, and the air guide channels are arranged through the conductive heating element along the axial direction; The first conductive layer includes a first main body portion, which is covered on the first surface; the second conductive layer includes a second main body portion, which is covered on the second surface; the area of ​​the first main body portion is smaller than the area of ​​the first surface; and the area of ​​the second main body portion is smaller than or equal to the area of ​​the second surface.

2. The heating assembly according to claim 1, characterized in that The first surface has a first heating area and a first blank area except the first heating area, and the first blank area is arranged around the first heating area; The first main body is covered in the first heating zone, at least part of the ports of the air guide channel on the first surface are located in the first heating zone, and the area of ​​the first main body is smaller than or equal to the area of ​​the first heating zone.

3. The heating assembly according to claim 1, characterized in that The geometric center of the first main body coincides with the geometric center of the first surface, or the geometric center of the first main body and the geometric center of the first surface have a preset distance in the radial direction of the conductive heating element.

4. The heating assembly according to claim 1, characterized in that The first main body has at least two first conductive units, and the first conductive units are arranged at intervals in a form of being connected to each other.

5. The heating assembly according to claim 1, characterized in that The conductive heating element further has a third surface, which surrounds the conductive heating element along its circumference and is connected between the first surface and the second surface; The first conductive layer also includes a first extension portion covering the surface of the conductive heating element, the first extension portion has two opposite ends, one end of the first extension portion is connected to the first main body portion, and the other end of the first extension portion extends to the third surface for connecting the electrode lead.

6. The heating assembly according to any one of claims 1 to 5, characterized in that The second surface includes a second heating area and a second blank area except the second heating area, and the second blank area is arranged around the second heating area; The second main body is covered on the second heating area and / or the second blank area.

7. The heating assembly according to claim 6, characterized in that The orthographic projection of the second main body on the first surface covers at least a portion of the first main body; or in the radial direction of the conductive heating element, the orthographic projection of the second main body on the first surface has a preset distance from the first main body.

8. The heating assembly according to claim 6, characterized in that The orthographic projection of the second main body portion on the first surface covers the first main body portion, and the area of ​​the orthographic projection is larger than the area of ​​the first main body portion; Or the orthographic projection of the second main body portion on the first surface is distributed around the first main body portion.

9. The heating assembly according to claim 6, characterized in that A line connecting the geometric center of the second main body and the geometric center of the first main body is a first line, and the first line is parallel to, coincides with, or intersects at an angle with the geometric center line of the conductive heating element.

10. The heating assembly according to claim 1, wherein: The conductive heating element further has a third surface, which surrounds the conductive heating element along its circumference and is connected between the first surface and the second surface; The second conductive layer further includes a second extension portion, one end of the second extension portion is connected to the second main body portion, and the other end of the second extension portion extends to the third surface for connecting the electrode lead.

11. The heating assembly according to claim 1, characterized in that The first conductive layer and the second conductive layer are both silver paste layers or gold paste layers printed on the surface of the conductive heating element, and / or the conductive heating element is conductive ceramic.

12. An aerosol generating device, characterized in that: Comprising a heating assembly as claimed in any one of claims 1 to 11.

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