Heating assembly and aerosol-generating device

Abstract

The embodiment of the present application relates to the aerosol generating technical field, and discloses a heating assembly and an aerosol generating device, which comprise a heating body, a fixing seat, a temperature sensor and a curable heat-conducting adhesive, the heating body is used for heating an aerosol generating article to generate an aerosol, the fixing seat is arranged on the surface of the heating body, the temperature sensor comprises a detection part, the detection part is clamped between the fixing seat and the surface of the heating body, and the detection part is at least partially in contact with the surface of the heating body, and the curable heat-conducting adhesive fills the gap between the fixing seat, the surface of the heating body and the detection part. In the above manner, the embodiment of the present application makes the fixing of the temperature sensor simple and easy, and the curable heat-conducting adhesive can receive the heat of the heating body, so that the detection part detects, thereby improving the accuracy and consistency of the detection result of the temperature sensor.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and in particular to a heating component and an aerosol generation device. Background Technology

[0002] The aerosol generating device heats the aerosol product using a heating element to produce aerosols for users to inhale. To control the temperature of the heating element, a temperature sensor is installed on the heating element to detect its temperature.

[0003] However, in the process of implementing the embodiments of this application, the inventors discovered that: currently, the temperature sensor is set on the heating element, which makes it difficult to fix the temperature sensor, and the contact between the heating elements is insufficient, resulting in poor accuracy of the temperature sensor detection results. Utility Model Content

[0004] The main technical problem addressed by this application is to provide a heating component and an aerosol generating device, which aims to solve the problems of difficulty in fixing temperature sensors and insufficient contact between heating elements, resulting in poor accuracy of temperature sensor detection results.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a heating component, including a heating element, a fixing base, a temperature sensor, and a curable thermally conductive adhesive, wherein the heating element is used to heat an aerosol generating product to generate an aerosol; the fixing base is disposed on the surface of the heating element; the temperature sensor includes a detection part; the detection part is sandwiched between the fixing base and the surface of the heating element, and the detection part is at least partially in contact with the surface of the heating element; the curable thermally conductive adhesive fills the gap between the fixing base, the surface of the heating element, and the detection part.

[0006] Optionally, the mounting base is provided with a first receiving groove, the detection part is received in the first receiving groove, and the curable thermally conductive adhesive is filled in the first receiving groove and / or applied to the part of the detection part that contacts the surface of the heating element.

[0007] Optionally, the temperature sensor further includes a connecting portion connected to the detection unit, and the fixing base is further provided with a second receiving groove communicating with the first receiving groove, with the portion of the connecting portion near the detection unit being received in the second receiving groove.

[0008] Optionally, the connecting portion includes a first connecting portion and a second connecting portion connected to the detection portion, and the second receiving groove includes a first sub-receiving groove and a second sub-receiving groove spaced apart, with the portion of the first connecting portion near the detection portion received in the first sub-receiving groove, and the portion of the second connecting portion near the detection portion received in the second sub-receiving groove.

[0009] Optionally, both the first sub-receiving groove and the second sub-receiving groove are inclined so that the first sub-receiving groove and the second sub-receiving groove form a figure-eight shape.

[0010] Optionally, the curable thermally conductive adhesive is made from ceramic powder and an adhesive.

[0011] Optionally, the heating element includes a tubular substrate and a heating element disposed on the surface of the tubular substrate.

[0012] Optionally, the heating assembly includes a heat insulation component, which is sleeved around the heating element and the fixing base.

[0013] Optionally, the heating assembly includes a fixing member that surrounds the heat insulation member, thereby securing the heat insulation member to the heating element.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide an aerosol generating device, including a power supply and the above-mentioned heating component, wherein the power supply is electrically connected to the heating element.

[0015] In this embodiment, the heating assembly includes a heating element, a mounting base, a temperature sensor, and a curable thermally conductive adhesive. The heating element is used to heat the aerosol generating product to generate an aerosol. The mounting base is disposed on the surface of the heating element. The temperature sensor includes a detection part, which is sandwiched between the mounting base and the surface of the heating element, and at least partially in contact with the surface of the heating element. The curable thermally conductive adhesive fills the gap between the mounting base, the surface of the heating element, and the detection part. By clamping and fixing the detection part between the mounting base and the heating element using the curable thermally conductive adhesive, the temperature sensor is secured, making the temperature sensor easy to fix. Furthermore, the curable thermally conductive adhesive can absorb the heat from the heating element for detection by the detection part, thereby improving the accuracy and consistency of the temperature sensor's detection results. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the heating assembly according to an embodiment of this application;

[0018] Figure 2 This is a schematic cross-sectional view of the heating assembly according to an embodiment of this application;

[0019] Figure 3 This is an exploded view of the heating assembly according to an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the structure of the fixing base of the heating component according to an embodiment of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100. Heating components;

[0023] 1. Heating element; 11. Tubular substrate; 12. Heating element;

[0024] 2. Fixing base; 21. First receiving slot; 22. Second receiving slot; 221. First sub-receiving slot; 222. Second sub-receiving slot;

[0025] 3. Temperature sensor; 31. Detection unit; 32. Connecting unit; 321. First connecting unit; 322. Second connecting unit;

[0026] 4. Curable thermally conductive adhesive;

[0027] 5. Thermal insulation components;

[0028] 6. Fasteners. Detailed Implementation

[0029] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "locked" to another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0031] Please see Figures 1-3 This application provides a heating assembly 100, which includes a heating element 1, a fixing base 2, a temperature sensor 3, and a curable thermally conductive adhesive 4. The heating element 1 is used to heat an aerosol-generating product to generate an aerosol for user inhalation. The fixing base 2 is disposed on the surface of the heating element 1. The temperature sensor 3 includes a detection part 31, which is sandwiched between the fixing base 2 and the surface of the heating element 1, and at least partially contacts the surface of the heating element 1, thereby enabling the detection part 31 to detect the temperature of the heating element 1. The curable thermally conductive adhesive 4 fills the gap between the fixing base 2, the surface of the heating element 1, and the detection part 31. By clamping and fixing the detection part 31 between the fixing base 2 and the heating element 1 with the curable thermally conductive adhesive 4, the temperature sensor 3 is fixed, making the temperature sensor 3 easy to fix. Furthermore, the curable thermally conductive adhesive 4 can receive the heat from the heating element 1 for detection by the detection part 31, thereby improving the accuracy and consistency of the temperature sensor 3's detection results.

[0032] In some embodiments, please refer to Figure 4 The mounting base 2 is provided with a first receiving groove 21, and the detection part 31 is received in the first receiving groove 21. Curable thermally conductive adhesive 4 is filled in the first receiving groove 21 and / or coated on the part of the detection part 31 that contacts the surface of the heating element 1. That is, the curable thermally conductive adhesive 4 is fixed to the surface of the detection part 31, the heating element 1, and the wall of the first receiving groove 21, or the curable thermally conductive adhesive 4 is fixed to the surface of the detection part 31 and the heating element 1, thereby making the detection part 31 at least partially in contact with the surface of the heating element 1.

[0033] It is understood that in some embodiments, the detection unit 31 does not contact the surface of the heating element 1. That is, the detection unit 31 and the surface of the heating element 1 are separated by a curable thermally conductive adhesive 4. The curable thermally conductive adhesive 4 is fixed to the surface of the heating element 1, so that the heat generated by the heating element 1 is transferred to the curable thermally conductive adhesive 4 and then detected by the detection unit 31.

[0034] In some embodiments, please refer to Figures 2-4 The temperature sensor 3 also includes a connecting portion 32 connected to the detection unit 31. The mounting base 2 is further provided with a second receiving groove 22 communicating with the first receiving groove 21. The portion of the connecting portion 32 near the detection unit 31 is received in the second receiving groove 22, so that a portion of the connecting portion 32 is recessed in the mounting base 2. This prevents the connecting portion 32 from being located between the surface of the mounting base 2 and the heating element 1, thereby affecting the mounting base 2 on the surface of the heating element 1 and reducing the space occupied between the surface of the mounting base 2 and the heating element 1, thereby reducing the space occupied by the heating assembly 100. In addition, it can also reduce the thermal contact between the connecting portion 32 and the heating element 1.

[0035] In some embodiments, please refer to Figure 3 and Figure 4 The connecting portion 32 includes a first connecting portion 321 and a second connecting portion 322 connected to the detection portion 31. The second receiving groove 22 includes a first sub-receiving groove 221 and a second sub-receiving groove 222 spaced apart. The portion of the first connecting portion 321 near the detection portion 31 is received in the first sub-receiving groove 221, and the portion of the second connecting portion 322 near the detection portion 31 is received in the second sub-receiving groove 222. The spaced-apart first sub-receiving groove 221 and second sub-receiving groove 222 separate the first connecting portion 321 and the second connecting portion 322, which facilitates the connection of the first connecting portion 321 and the second connecting portion 322 to the outside. For example, the first connecting portion 321 and the second connecting portion 322 can be electrically connected to the control board of the aerosol generating device.

[0036] It should be noted that both the first sub-receiving groove 221 and the second sub-receiving groove 222 are through grooves, that is, one end of the first sub-receiving groove 221 and one end of the second sub-receiving groove 222 both penetrate the side wall of the first sub-receiving groove 21, and the other end of the first sub-receiving groove 221 and the other end of the second sub-receiving groove 222 both penetrate the fixing seat 2, so that the portion of the first connecting part 321 away from the detection part 31 extends out of the first sub-receiving groove 221, and the portion of the second connecting part 322 away from the detection part 31 extends out of the second sub-receiving groove 222.

[0037] In some embodiments, please refer to Figure 4 The first sub-receiving groove 221 and the second sub-receiving groove 222 are both inclined so that they form a figure-eight shape. The figure-eight shape of the first sub-receiving groove 221 and the second sub-receiving groove 222 helps to keep the ends of the first sub-receiving groove 221 and the second sub-receiving groove 222 away from the first receiving groove 21 away from each other.

[0038] In some embodiments, the temperature sensor 3 includes, but is not limited to, NTC (Negative Temperature Coefficient), PTC (Positive Temperature Coefficient), thermocouple, and other temperature sensors 3.

[0039] In some embodiments, the curable thermally conductive adhesive 4 is made of ceramic powder and an adhesive. It should be noted that the curable thermally conductive adhesive 4 is initially in a fluid state. After being heated, heated, or baked, the adhesive evaporates and the adhesive cures, fixing the curable thermally conductive adhesive 4 to the surface of the heating element 1, the wall of the first receiving groove 21, and the detection part 31, or fixing the curable thermally conductive adhesive 4 to the surface of the heating element 1 and the detection part 31. Specifically, during the manufacturing process, a portion of the curable thermally conductive adhesive 4 is applied to the first receiving groove 21, and then the temperature sensor 3 is placed on the fixing base 2 so that the detection part 31 is located in the first receiving groove 21. Then, another portion of the curable thermally conductive adhesive 4 is applied to the detection part 31, and then the fixing base 2 is placed on the surface of the heating element 1. Heating or baking then cures the curable thermally conductive adhesive 4.

[0040] In other embodiments, the curable thermally conductive adhesive 4 is made of inorganic adhesive, organic adhesive, resin or thermally conductive silicone grease.

[0041] Furthermore, in order to facilitate the mounting base 2 being placed on the surface of the heating element 1, the heating assembly 100 also includes a curable adhesive. The curable adhesive is placed on the surface of the mounting base 2 facing the heating element 1 and the surface of the heating element 1, so that the curable adhesive and the curable thermally conductive adhesive 4 are heated or baked simultaneously during the manufacturing process to cure them, so that the mounting base 2 is placed on the surface of the heating element 1.

[0042] In some embodiments, the curable adhesive is made of ceramic powder and an adhesive, enabling it to conduct heat. It should be noted that the curable adhesive is initially in a fluid state; after heating or baking, the adhesive evaporates and the curable adhesive solidifies.

[0043] In some embodiments, the mounting base 2 is made of ceramics such as aluminum nitride, aluminum oxide, and zirconium oxide, which have high thermal conductivity and are insulating, so that the mounting base 2 can conduct heat.

[0044] In some embodiments, please refer to Figure 3 The heating element 1 includes a tubular base 11 and a heating element 12 disposed on the surface of the tubular base 11. The tubular base 11 is used for inserting the aerosol generating article, and the heating element 12 is used to generate heat to heat the aerosol generating article to generate aerosol.

[0045] In some embodiments, the tubular substrate 11 may be made of high-temperature resistant and transparent materials such as quartz glass, ceramics or mica, or other materials with high infrared transmittance, such as high-temperature resistant materials with infrared transmittance of more than 95%, which are not specifically limited herein.

[0046] In some embodiments, the heating element 12 is an infrared coating applied to the surface of the tubular substrate 11. The infrared coating generates heat when energized, thereby producing infrared radiation of a specific wavelength, such as far-infrared radiation of 8 μm to 15 μm. When the wavelength of the infrared radiation matches the absorption wavelength of the aerosol-forming matrix, the energy of the infrared radiation is easily absorbed by the aerosol-forming matrix. In this example, the wavelength of the infrared radiation is not limited and can be 0.75 μm to 1000 μm, preferably far-infrared radiation of 1.5 μm to 400 μm.

[0047] In some embodiments, the infrared coating is preferably made by thoroughly mixing far-infrared electrothermal ink, ceramic powder, and inorganic binder, then coating it onto the surface of the tubular substrate 11, and then drying and curing it for a certain period of time, with a thickness of 30μm-50μm. Alternatively, the infrared coating can also be made by mixing tin tetrachloride, tin oxide, antimony trichloride, titanium tetrachloride, and anhydrous copper sulfate in a certain proportion and then coating it onto the surface of the tubular substrate 11; or it can be a silicon carbide ceramic layer, a carbon fiber composite layer, a zirconium-titanium oxide ceramic layer, or a zirconium-titanium... The infrared coating may be one of the following: nitride ceramic layer, zirconium-titanium boride ceramic layer, zirconium-titanium carbide ceramic layer, iron oxide ceramic layer, iron nitride ceramic layer, iron boride ceramic layer, iron carbide ceramic layer, rare earth oxide ceramic layer, rare earth nitride ceramic layer, rare earth boride ceramic layer, rare earth carbide ceramic layer, nickel-cobalt oxide ceramic layer, nickel-cobalt nitride ceramic layer, nickel-cobalt boride ceramic layer, nickel-cobalt carbide ceramic layer, or high-silicon molecular sieve ceramic layer; the infrared coating may also be other existing material coatings.

[0048] In some embodiments, please refer to Figures 1-3 The heating assembly 100 includes a heat insulation component 5, which is sleeved outside the heating element 1 and the fixing base 2. The heat insulation component 5 can prevent a large amount of heat from being dissipated outward and transferred to the outer shell of the aerosol generating device, thereby preventing it from becoming too hot to touch and affecting the user experience.

[0049] In some embodiments, the heat insulation component 5 is made of one of the following materials: heat insulation adhesive, aerogel, aerogel felt, asbestos, aluminum silicate, calcium silicate, diatomaceous earth, zirconium oxide, etc.

[0050] In some embodiments, the inner surface of the heat insulation member 5 may also be coated with a reflective coating to reflect infrared rays emitted by the infrared coating on the tubular substrate 11 back into the tubular substrate 11 to heat the aerosol forming matrix located in the cavity, thereby improving heating efficiency. The reflective coating includes at least one of metals and metal oxides. Specifically, it may be made of one or more of gold, silver, nickel, aluminum, gold alloys, silver alloys, nickel alloys, aluminum alloys, oxides of gold, oxides of silver, oxides of nickel and aluminum, titanium oxide, zinc oxide, and cerium dioxide. The thickness of the reflective coating is between 0.3 μm and 200 μm.

[0051] In some embodiments, please refer to Figures 1-3 The heating assembly 100 includes a fixing member 6 that surrounds the heat insulation member 5, thereby fixing the heat insulation member 5 to the heating element 1. It is understood that during the manufacturing process, to prevent displacement of the fixing base 2 and the curable thermally conductive adhesive 4, the fixing member 6 is surrounded by the heat insulation member 5 to provide a pre-tightening force on the fixing base 2 and the curable thermally conductive adhesive 4 before heating or baking.

[0052] In some embodiments, the fastener 6 is a type of high-temperature tape such as PI sleeve or PEEK heat shrink tubing.

[0053] In this embodiment, the heating assembly 100 includes a heating element 1, a fixing base 2, a temperature sensor 3, and a curable thermally conductive adhesive 4. The heating element 1 is used to heat the aerosol generating article to generate an aerosol. The fixing base 2 is disposed on the surface of the heating element 1. The temperature sensor 3 includes a detection part 31. The detection part 31 is sandwiched between the fixing member 6 and the surface of the heating element 1, and the detection part 31 is at least partially in contact with the surface of the heating element 1. The curable thermally conductive adhesive 4 fills the gap between the fixing member 6, the surface of the heating element 1, and the detection part 31. By clamping and fixing the detection part 31 between the fixing member 6 and the heating element 1 with the curable thermally conductive adhesive 4, the temperature sensor 3 is fixed, making the temperature sensor 3 easy to fix. The curable thermally conductive adhesive 4 can receive the heat from the heating element 1 so that the detection part 31 can detect it, thereby improving the accuracy and consistency of the detection results of the temperature sensor 3.

[0054] This application also provides an embodiment of an aerosol generating device, which includes a power supply and the heating component 100 described above. The power supply is electrically connected to the heating element 1. Specifically, the power supply is electrically connected to the heating element 12 to provide electrical energy to the heating element 12. The structure and function of the heating component 100 can be found in the above embodiments, and will not be described in detail here.

[0055] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application's specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A heating assembly, characterized in that, include: A heating element used to heat aerosol-generating products to generate aerosols; A mounting base is provided on the surface of the heating element; A temperature sensor includes a detection unit; the detection unit is sandwiched between the surface of the mounting base and the surface of the heating element, and the detection unit is at least partially in contact with the surface of the heating element; A curable thermally conductive adhesive is used to fill the gaps between the mounting base, the surface of the heating element, and the detection part.

2. The heating assembly according to claim 1, characterized in that, The mounting base is provided with a first receiving groove, the detection part is housed in the first receiving groove, and the curable thermally conductive adhesive is filled in the first receiving groove and / or applied to the part of the detection part that contacts the surface of the heating element.

3. The heating assembly according to claim 2, characterized in that, The temperature sensor also includes a connecting part connected to the detection part, and the fixing base is also provided with a second receiving groove communicating with the first receiving groove, and the portion of the connecting part near the detection part is received in the second receiving groove.

4. The heating assembly according to claim 3, characterized in that, The connecting portion includes a first connecting portion and a second connecting portion connected to the detection portion. The second receiving groove includes a first sub-receiving groove and a second sub-receiving groove spaced apart. The portion of the first connecting portion closer to the detection portion is received in the first sub-receiving groove, and the portion of the second connecting portion closer to the detection portion is received in the second sub-receiving groove.

5. The heating assembly according to claim 4, characterized in that, Both the first sub-receiving groove and the second sub-receiving groove are inclined so that the first sub-receiving groove and the second sub-receiving groove form a figure-eight shape.

6. The heating assembly according to claim 1, characterized in that, The heating element includes a tubular substrate and a heating element disposed on the surface of the tubular substrate.

7. The heating assembly according to claim 1, characterized in that, The heating assembly includes a heat insulation component, which is sleeved around the heating element and the fixing base.

8. The heating assembly according to claim 7, characterized in that, The heating assembly includes a fixing member that surrounds the heat insulation member, thereby fixing the heat insulation member to the heating element.

9. An aerosol generating device, characterized in that, It includes a power supply and a heating assembly as described in any one of claims 1-8, wherein the power supply is electrically connected to the heating element.

Images