Multi-piece core heater and aerosol generating device

Abstract

The utility model discloses a multi-piece type core heater and an aerosol generating device, the multi-piece type core heater comprises a rod-shaped support and a plurality of heating pieces, the plurality of heating pieces are fixed on the outer side wall of the rod-shaped support and are annularly distributed, and the surface of each heating piece is provided with an infrared coating. According to the utility model, the heating efficiency of the heater is improved, and the heated material is heated more uniformly.

Description

Technical Field

[0001] This utility model relates to the technical field of aerosol generation devices, and in particular to a multi-plate core heater and an aerosol generation device. Background Technology

[0002] Aerosol generating devices release compounds by heating substances such as tobacco, tea leaves, and herbs with a heater without combustion. The heater is the core component of the aerosol generating device.

[0003] Current heaters come in various types, such as insert type and tubular encased type. Insert type heaters can be inserted into the object to be heated, while tubular encased type heaters are generally placed into a tubular cavity for heating.

[0004] Currently, insertable heaters include needle heaters and tongue-type heaters. Both needle heaters and tongue-type heaters have the following drawbacks:

[0005] 1. The contact shape with the heated material is a needle or tongue, which does not have a large enough contact area. It takes a long time to heat the entire material, the temperature rise is slow, and the heating efficiency is low.

[0006] 2. Due to the small contact area, when the needle or tongue is inserted into the center of the object being heated, the heat diffuses outward from the center. This can lead to excessively high temperatures at the center, causing carbonization and damage to the heated material, while the surrounding material may not be fully heated. In other words, the heating of the material is uneven, with the center and edges receiving heat indiscriminately.

[0007] Therefore, existing technologies need to be improved. Utility Model Content

[0008] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a multi-plate core heater, which aims to improve the heating efficiency of the heater and make the heated material more evenly heated.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A multi-element core heater, comprising a rod-shaped support and multiple heating elements;

[0011] The plurality of heating elements are fixed on the outer wall of the rod-shaped bracket and distributed circumferentially;

[0012] The surface of the heating element is provided with an infrared coating.

[0013] In some examples, the rod-shaped support is a hollow tube.

[0014] In some examples, the outer side wall of the rod-shaped support is provided with a plurality of mounting seams spaced apart circumferentially, and each heating element is respectively embedded in one of the mounting seams. The mounting seams extend downward along the axis of the rod-shaped support and extend through the bottom end of the rod-shaped support. The width of the mounting seams decreases from bottom to top along the axial direction of the rod-shaped support.

[0015] In some examples, each of the heating elements is connected to a positive lead and a negative lead, which are housed within the rod-shaped support and extend from the bottom end of the rod-shaped support.

[0016] In some examples, the infrared coating itself is an insulating layer.

[0017] In some examples, an insulating layer is separately provided outside the infrared coating, or a separate insulating layer is provided between the surface of the heating element and the infrared coating.

[0018] In some examples, the top of the rod-shaped support is provided with a needle tip that closes that end.

[0019] In some examples, the multi-plate core heater further includes a heat-resistant base with a mounting hole in the center for inserting and securing the rod-shaped bracket.

[0020] In some examples, the heat-resistant base has a stepped hole above the mounting hole for placing absorbent cotton, and a limiting hole below the mounting hole. An abutment block is provided inside the wall of the limiting hole to abut against the bottom end of the rod-shaped bracket.

[0021] This invention also proposes an aerosol generating device, which includes the aforementioned multi-plate core heater.

[0022] It should be understood that, within the scope of this utility model, the above-mentioned technical features of this utility model and the technical features specifically described below (such as embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described in detail here.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. Because it uses sheet-shaped heating elements and has multiple heating elements arranged circumferentially along the outer wall of the rod-shaped support, the contact area with the heated material is greatly increased, and the heating efficiency is improved after the contact area is increased.

[0025] 2. Simultaneously, an infrared coating is provided on the surface of the heating element. When heated, the infrared coating emits infrared light waves, which enhances the infrared radiation effect of the heating element. In this way, the heating element heats the material not only through heat conduction but also through infrared radiation. The infrared radiation heating method can penetrate the gaps between the materials to be heated, such as the gaps between tobacco particles. Combined with the Brownian motion of the heated material particles and the high-frequency vibration of the heated material particles driven by the infrared light waves, the edges and center of the heated material can be heated simultaneously. This makes the heating of the center and outer edge of the heated material more uniform, and the temperature of the outer edge and center of the heated material can quickly reach a state of equilibrium. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the first embodiment of the multi-plate core heater of this utility model.

[0028] Figure 2 for Figure 1 A schematic diagram of the structure.

[0029] Figure 3 for Figure 1 Cross-sectional view of the structure.

[0030] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the structure.

[0031] Figure 5 for Figure 1 A schematic diagram of the rod-shaped support structure.

[0032] Figure 6 for Figure 1 A cross-sectional view of the heat-resistant base in the structure.

[0033] Figure label:

[0034] 100-Heater, 10-Rod-shaped bracket, 11-Mounting seam, 111-First mounting seam, 112-Second mounting seam, 12-Needle tip, 13-Hollow cavity, 20-Heating element, 21-Positive lead, 22-Negative lead, 23-First side plate, 24-Second side plate, 25-Connecting piece, 30-Infrared coating, 40-Heat resistant base, 41-Mounting hole, 42-Step hole, 43-Limiting hole, 44-Abutting block, 50-Tightening tube. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a quick-release connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0039] This utility model includes the following embodiments. For example... Figures 1 to 4As shown, this utility model provides a multi-element core heater 100, including a rod-shaped support 10 and multiple heating elements 20. The rod-shaped support 10 is a tubular hollow structure used to mount the heating elements 20. The heating elements 20 are provided with electrode leads, which can be connected to a power source. After being energized, the heating elements 20 generate heat to heat the material being heated. The heating elements 20 can be ordinary resistance heating elements, such as those made from metals with higher resistance, such as 430 / 316, iron-chromium-aluminum, etc.; the heating elements 20 can also be made by spraying, printing, or plating a film onto an insulating material to create a resistance and then forming the heating element.

[0040] In this invention, the plurality of heating elements 20 are fixed to the outer wall of the rod-shaped support 10 and distributed circumferentially, and the plurality of heating elements 20 includes at least two heating elements. For example... Figure 1 As shown, in this embodiment, the multiple heating elements 20 are divided into four blades (one of which is blocked) and arranged circumferentially on the tubular sidewall of the rod-shaped support 10.

[0041] The rod-shaped support 10 and its multiple heating elements 20 can be inserted into the center of the heated material (tobacco, tea leaves, herbs), hence the heater of this invention is called the core heater 100.

[0042] The rod-shaped support 10 can be made of metal materials, such as stainless steel. Alternatively, the rod-shaped support 10 can be made of high-temperature resistant non-metallic materials, such as ceramics or glass.

[0043] like Figure 1 As shown in the figure, since the rod-shaped support 10 of this utility model is provided with multiple heating elements 20 arranged circumferentially, when... Figure 1 After the structure shown is inserted into the material to be heated, each heating element 20 on the rod-shaped support 10 can contact the material to be heated with a large contact area. Compared with the insertion heater in the prior art, the contact area of ​​the material to be heated is greatly increased, resulting in a large heating area and high heating efficiency.

[0044] At the same time, such as Figure 3 and Figure 4 As shown, the surface of the heating element 20 of the heater 100 of this utility model is provided with an infrared coating 30.

[0045] The infrared coating 30 of this invention uses raw materials that generate infrared radiation when heated, and is applied to the surface of the heating element 20 by methods such as spray pyrolysis, sputtering, evaporation, coating, or screen printing. The raw materials for the infrared coating 30 can be graphene, carbon powder, silicon dioxide, glaze, silicon oxide, etc. The function of the infrared coating 30 is to generate infrared radiation, increasing the infrared radiation effect of the heating element 20, and heating the material being heated through infrared radiation. Thus, the heating method of the heater 100 of this invention, in addition to heating the material through heat conduction generated by the heating element 20 itself, also incorporates the infrared coating 30 to enhance the infrared radiation effect, heating the material through infrared radiation.

[0046] Because the heater 100 of this invention has an infrared coating 30 on the surface of the heating element 20, the infrared coating 30 emits infrared rays after being heated. The infrared radiation heating method can penetrate the gaps between the materials to be heated. In addition, the Brownian motion of the heated material particles and the high-frequency vibration of the heated material particles driven by the infrared rays make the edge and center of the heated material heat up at the same time, so that the center and outer edge of the heated material as a whole are heated more evenly.

[0047] In one embodiment, the infrared coating 30 is itself an insulating layer. That is, in this embodiment, the infrared coating 30 is made of an insulating material that emits infrared light when heated, such as silicon dioxide or silicon oxide. This insulating layer ensures insulation between the heating element 20 and the rod-shaped support 10.

[0048] Alternatively, an insulating layer (not shown) is separately provided outside the infrared coating 30. Thus, the infrared coating 30 can be made of either a conductive or insulating material. The red light emitted by the infrared coating 30 can pass through the insulating layer, while simultaneously isolating the heating element 20 from the rod-shaped support 10, thus providing insulation.

[0049] Alternatively, a separate insulating layer (not shown) is provided between the surface of the heating element 20 and the infrared coating 30. Similarly, in this embodiment, the infrared coating 30 can be made of either a conductive or an insulating material. The separate insulating layer, located between the surface of the heating element 20 and the infrared coating 30, serves to insulate the heating element 20 from the rod-shaped support 10.

[0050] The rod-shaped support 10 of this utility model is a hollow tube, which makes it easier to reduce the weight of the rod-shaped support 10, facilitates the installation of the heating element 20, and also facilitates the routing of the lead wires connected to the heating element 20.

[0051] Specifically, such as Figure 2 and Figure 4As shown, the outer wall of the rod-shaped support 10 of this utility model is provided with a plurality of mounting seams 11 spaced apart circumferentially. Each heating element 20 is respectively embedded in one of the mounting seams 11. The mounting seams 11 extend downward along the axis of the rod-shaped support 10 and extend through the bottom end of the rod-shaped support 10. The mounting seams 11 on the rod-shaped support 10 can be made by cutting. In this embodiment, the mounting seam 11 is not connected to the top end of the rod-shaped support 10. Thus, when installing the heating element 20, the top of the heating element 10 abuts against the rod-shaped support 10 at the top position of the mounting seam 11. The mounting seam 11 is connected to the bottom end of the rod-shaped support 10 to facilitate the insertion of the heating element 20 from the mounting seam 11 at the bottom end of the rod-shaped support 10. Then, the heating element 20 is moved upward to the highest position of the mounting seam 11 to facilitate the placement of the lead wire on the heating element 20 into the hollow cavity 13 of the rod-shaped support 10. In this embodiment, as Figure 4 As shown, the rod-shaped bracket 10 has four mounting seams 11 circumferentially, which allows at least four sheet-like heating structures to extend from the surface of the rod-shaped bracket 10. It can be understood that in other embodiments, the rod-shaped bracket 10 may also have two, three, five, or six mounting seams 11 circumferentially.

[0052] Specifically, such as Figure 2 and Figure 3 As shown, each heating element 20 is connected to a positive lead 21 and a negative lead 22. The positive lead 21 and the negative lead 22 are housed within the rod-shaped support 10 and extend from the bottom end of the rod-shaped support 10. The positive lead 21 and the negative lead 22 connect the heating element 20 to the positive and negative terminals of a power supply to conduct electricity. In this invention, both the positive lead 21 and the negative lead 22 are routed within the hollow cavity 13 of the rod-shaped support 10 and exit from the bottom end of the rod-shaped support 10. This allows the leads to be hidden within the rod-shaped support 10 for routing, thus avoiding the leads being led out from the outer wall of the rod-shaped support 10. Leading the leads out from the outer wall of the rod-shaped support 10 takes up space and is difficult to install and route.

[0053] Furthermore, the width of the mounting slot 11 on the rod-shaped bracket 10 of this utility model decreases from bottom to top along the axial direction of the rod-shaped bracket 10. In this way, when the heating element 20 is installed from bottom to top in the mounting slot 11, the lower part of the mounting slot 11 is wider, which facilitates the insertion of the heating element 20, and the upper part of the mounting slot 11 is narrower, which facilitates clamping the heating element 20.

[0054] The width of the mounting seam 11 decreases gradually from bottom to top along the axial direction of the rod-shaped bracket 10, either gradually or in segments. For example... Figure 4As shown, the mounting seam 11 includes a first mounting seam 111 located in the lower section and a second mounting seam 112 located in the upper section. The first mounting seam 111 and the second mounting seam 112 are connected, and the width of the first mounting seam 111 is greater than the width of the second mounting seam 112. Specifically, the width of the first mounting seam 111 is slightly greater than the thickness of the heating element 20 plus the infrared coating 30, while the width of the second mounting seam 112 is slightly less than the thickness of the heating element 20 plus the infrared coating 30.

[0055] Meanwhile, the length of the second mounting seam 112 is greater than or equal to the height of the heating element 20, so that the heating element 20 can be completely clamped in the height direction.

[0056] Preferably, such as Figure 2 and Figure 3 As shown in the diagram, in this embodiment, the heating element 20 is U-shaped. Each U-shaped heating element 20 includes a first side piece 23, a second side piece 24, and a connecting piece 25 connecting the two. The first side piece 23 and the second side piece 24 can be embedded in the mounting slots 11 on two opposite sides of the rod-shaped bracket 10. Then, a positive electrode lead 21 and a negative electrode lead 22 are respectively provided on the inner bottom of the first side piece 23 and the second side piece 24. This U-shaped design of the heating element 20 speeds up the installation of the heating element 20 and reduces the number of leads. Figure 2 In this embodiment, there are two U-shaped heating elements 20. During installation, only two installation steps are needed to form four heating blades protruding from the outer wall of the rod-shaped support 10, requiring only four lead wires. However, if a separate structure is used instead of a U-shaped structure, the four heating blades on the outer wall of the rod-shaped support 10 would require four independent heating elements 20, necessitating four installation steps and eight lead wires. In this embodiment, the two U-shaped heating elements 20 are arranged in a cross shape on the rod-shaped support 10.

[0057] Furthermore, the top end of the rod-shaped support 10 of this utility model is provided with a needle tip 12 to close this end. For example... Figure 5 As shown, this facilitates the smooth insertion of the rod-shaped support 10 and the heating element 20 into the heated material, while preventing the heated material from entering the rod-shaped support 10 and affecting the heating effect.

[0058] Preferably, such as Figure 2 and Figure 3 As shown, in this embodiment, a tightening tube 50 is also fitted onto the outer wall of the rod-shaped bracket 10 below the heating element 20. The tightening tube 50 can tighten the rod-shaped bracket 10 with the mounting groove 11, so that the heating element 20 is firmly clamped by the rod-shaped bracket 10.

[0059] like Figure 1 and Figure 3As shown, the heater 100 of this utility model also includes a heat-resistant base 40, which has a mounting hole 41 in the middle for inserting and fixing the rod-shaped support 10. The heat-resistant base 40 is used to install the entire heat-resistant base 40 into the aerosol generating device. The mounting hole 41 of the heat-resistant base 40 and the rod-shaped support 10 can be installed with a tight fit, so that the rod-shaped support 10 in the mounting groove 11 can be further tightened by the heat-resistant base 40, thus clamping the heating element 20 more firmly. Preferably, in this embodiment, after the rod-shaped support 10 is inserted into the mounting hole 41 of the heat-resistant base 40, it is fixed with high-temperature potting compound to improve the firmness of the connection between the rod-shaped support 10 and the heat-resistant base 40.

[0060] Preferably, such as Figure 6 As shown, in this embodiment, the heat-resistant base 40 has a stepped hole 42 above the mounting hole 41 for placing absorbent cotton. During the heating process of the heater 100 on the heated material, the aerosol will turn into liquid after cooling and flow downward into the heat-resistant base 40. At this time, the absorbent cotton placed in the stepped hole 42 can absorb the liquid and prevent the liquid from flowing out from the bottom of the heat-resistant base 40.

[0061] The heat-resistant base 40 has a limiting hole 43 below the mounting hole 41. An abutment block 44 is provided inside the wall of the limiting hole 43, abutting against the bottom end of the rod-shaped bracket 10. The abutment block 44 is a limiting structure for the rod-shaped bracket 10 during installation. When the rod-shaped bracket 10 is inserted into the mounting hole 41 of the heat-resistant base 40 and moves downwards, it cannot move further downwards when its bottom end abuts against the abutment block 44, indicating that it is properly installed. The limiting hole 43 also serves to allow the lead wire of the heating element 20 to pass through.

[0062] This utility model also proposes an aerosol generating device (not shown) comprising the aforementioned multi-plate core heater 100. Since this aerosol generating device comprises the aforementioned multi-plate core heater 100, it possesses the functions and effects of the multi-plate core heater 100 of this utility model, which will not be elaborated further here.

[0063] The multi-plate core heater 100 of this embodiment has multiple heating elements 20 arranged circumferentially on the outer wall of the rod-shaped support 10, and an infrared coating 30 is provided on the surface of the heating elements 20. This greatly increases the contact area with the heated material and improves the heating efficiency. At the same time, the infrared coating enhances the infrared radiation effect, so that the heat radiation penetrates the gaps between the particles of the heated material and reaches the edge of the heated material. This makes the center and outer edge of the heated material more uniformly heated, avoiding the phenomenon that the central material is carbonized and damaged while the edge material is not fully heated due to the excessively high temperature at the center of the heated material and the low temperature at the edge.

[0064] The above description is merely an example to clearly illustrate the present utility model and is not intended to limit the patent scope of the present utility model. It is impossible to exhaustively list all the embodiments here. All equivalent structural transformations made using the content of the technical solution of the present utility model under the concept of the present utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A multi-plate core heater, characterized in that, Includes a rod-shaped support and multiple heating elements; The plurality of heating elements are fixed on the outer wall of the rod-shaped bracket and distributed circumferentially; The surface of the heating element is provided with an infrared coating.

2. The multi-plate core heater according to claim 1, characterized in that, The rod-shaped support is a hollow tube.

3. The multi-plate core heater according to claim 2, characterized in that, The outer side wall of the rod-shaped bracket is provided with multiple mounting seams spaced apart circumferentially. Each heating element is embedded in one of the mounting seams. The mounting seams extend downward along the axis of the rod-shaped bracket and extend through the bottom end of the rod-shaped bracket. The width of the mounting seams decreases from bottom to top along the axial direction of the rod-shaped bracket.

4. The multi-plate core heater according to claim 2, characterized in that, Each of the heating elements is connected to a positive lead and a negative lead, which are housed within the rod-shaped support and extend from the bottom end of the rod-shaped support.

5. The multi-plate core heater according to claim 1, characterized in that, The infrared coating itself is an insulating layer.

6. The multi-plate core heater according to claim 1, characterized in that, An insulating layer is separately provided outside the infrared coating, or a separate insulating layer is provided between the surface of the heating element and the infrared coating.

7. The multi-plate core heater according to claim 1, characterized in that, The top of the rod-shaped support is provided with a needle tip to close the end.

8. The multi-plate core heater according to claim 1, characterized in that, The multi-plate core heater also includes a heat-resistant base, with a mounting hole in the middle for inserting and fixing the rod-shaped bracket.

9. The multi-plate core heater according to claim 8, characterized in that, The heat-resistant base has a stepped hole above the mounting hole for placing absorbent cotton, and a limiting hole below the mounting hole. An abutment block is provided inside the wall of the limiting hole to abut against the bottom end of the rod-shaped bracket.

10. An aerosol generating device, characterized in that, It includes a multi-plate core heater as described in any one of claims 1-9.

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