Aerosol generator and its heating structure

Abstract

The present invention relates to an aerosol generator and its heating structure. The heating structure includes a heating element capable of emitting infrared light waves when energized, a tube through which the infrared light waves are transmitted, and a temperature measuring unit for measuring temperature, the heating element and the tube wall being at least partially spaced apart, the heating element including a heating portion and a conductive portion connected to one end of the heating portion, and the temperature measuring unit being provided on the tube wall. In this heating structure, the heating element capable of emitting infrared light waves when energized, the tube through which the infrared light waves are transmitted, and the temperature measuring unit are provided on the tube wall, and the heating element and the tube wall being at least partially spaced apart, thereby solving the problem of the heating element being too high and improving the user's mouthfeel during smoking. Furthermore, the temperature measuring unit is provided on the tube wall, achieving the technical effects of high temperature measurement accuracy, efficient temperature measurement, and a simple structure.

Description

Technical Field

[0001] The present invention relates to the technical field of non-combustion heating atomization, and more specifically, to an aerosol generating device and a heat generating structure thereof.

Background Art

[0002] In the related art, an aerosol generating device is an electronic device that heats, rather than burns, an aerosol-forming matrix (a solid matrix such as a leaf product of a plant like tobacco). Generally, the aerosol-forming matrix is usually atomized at 350°C or lower. The disadvantage of this heating method is that since the heating element transfers heat directly or indirectly through a solid material to the aerosol-forming matrix, it is necessary to prevent the operating temperature of the heating element from becoming too high; otherwise, the aerosol-forming matrix will be excessively combusted, which adversely affects the smoking experience of the aerosol generating device. Therefore, when the heating element operates at a temperature exceeding 400°C, temperature detection and control become particularly important.

Summary of the Invention

Problem to be Solved by the Invention

[0003] The technical problem to be solved by the present invention is to provide an improved aerosol generating device and a heat generating structure thereof.

Means for Solving the Problem

[0004] The technical solution adopted by the present invention to solve its technical problem is as follows. A heat generating structure includes: a heating element capable of emitting infrared light waves when energized; a tube through which the infrared light waves transmit; and a temperature measurement unit for measuring temperature. The tube walls of the heating element and the tube are at least partially spaced apart from each other. The heating element includes a heat generating portion and a conductive portion connected to one end of the heat generating portion, and the temperature measurement unit is provided on the tube wall of the tube.

[0005] In some embodiments, the temperature measuring unit includes a covering section covering the tube, the covering section at least partially overlapping a first projection section of the heating portion on the surface of the tube where the covering section is located, and / or the covering section at least partially overlapping a second projection section of the conductive portion on the surface of the tube where the covering section is located.

[0006] In some embodiments, the temperature measuring unit includes electrically connected temperature measuring sections and lead sections, all of which overlap the first projection section of the heat-generating portion on the surface of the tube where the covering section is located, and the lead sections are provided at the end of the temperature measuring sections closest to the conductive portion.

[0007] In some embodiments, the temperature measuring unit includes an electrically connected temperature measuring section and a lead section, wherein a portion of the temperature measuring section overlaps the first projection section of the heat-generating portion on the surface of the tube where the covering section is located, the remaining portion of the temperature measuring section overlaps the second projection section of the conductive portion on the surface of the tube where the covering section is located, and the lead section is provided at the end of the temperature measuring section closest to the conductive portion.

[0008] In some embodiments, the temperature measuring unit includes electrically connected temperature measuring sections and lead sections, all of which overlap the second projection section of the conductive portion on the surface of the tube where the covering section is located, and the lead sections are provided at the end of the temperature measuring sections closest to the conductive portion.

[0009] In some embodiments, the temperature measuring unit includes an electrically connected temperature measuring section and a lead section, wherein the temperature measuring section is located in the tube near one end of the heating element, and the lead section is located at the end of the temperature measuring section away from the conductive part.

[0010] In some embodiments, the temperature measurement section is at least partially TCR (Temperature Coefficient of Resistance) It is manufactured using materials.

[0011] In some embodiments, the temperature coefficient of the TCR material is greater than 300.

[0012] In some embodiments, the temperature measurement section is spiral-shaped.

[0013] In some embodiments, the temperature measurement section is located on the outer or inner surface of the tube.

[0014] In some embodiments, the temperature measuring section is formed using the TCR material by at least one of screen printing, physical vapor deposition, spray coating, and dipping.

[0015] In some embodiments, the heating section is provided longitudinally and includes a linear first heating section and a spiral second heating section wound around the outside of the first heating section, with one end of the first heating section electrically connected to one end of the second heating section, and the other end of the first heating section and the other end of the second heating section electrically connected to the conductive section.

[0016] In some embodiments, the heating portion includes a double helix third heating section, the third heating section including a helical section and an electrical connection terminal located at one end of the helical section, the electrical connection terminal being electrically connected to the conductive portion.

[0017] In some embodiments, the heating element is provided inside the tube, and the heating element and the inner wall of the tube are spaced apart.

[0018] In some embodiments, the tube includes a first sleeve and a second sleeve fitted over the outer circumference of the first sleeve. There is a gap between the first sleeve and the second sleeve, and this gap forms a cavity for housing the heating element. The heating element is provided on the outer circumference of the first sleeve, spaced apart from the outer wall of the first sleeve, and a heating cavity for heating the aerosol-forming matrix is ​​formed inside the first sleeve.

[0019] In some embodiments, the inner wall of the second sleeve is provided with a reflective layer that reflects the infrared light waves.

[0020] In some embodiments, a fixed base is provided at the bottom of the tube, and the temperature measuring unit is provided above the fixed base or partially overlaps with the fixed base.

[0021] In some embodiments, the maximum operating temperature of the heating element is 500°C to 1300°C.

[0022] The present invention also provides an aerosol generating device comprising the heat-generating structure described in any one of the above-mentioned items. [Effects of the Invention]

[0023] The beneficial effects of the present invention are as follows. In the present invention, the heat-generating structure comprises a heat-generating body capable of emitting infrared light waves when energized, and a tube through which the infrared light waves transmit, and the heat-generating body and the tube wall of the tube are spaced at least partially apart. Therefore, under the condition that the maximum operating temperature of the heat-generating body is higher than 400°C, the problem that the user's smoking experience is affected due to excessively high temperature of the heat-generating body can be solved. In addition, the present invention further comprises a temperature measurement unit, and the temperature measurement unit is disposed on the tube wall of the tube, thereby achieving the technical effects of high temperature measurement accuracy, efficient temperature measurement and simple structure. [BRIEF DESCRIPTION OF THE DRAWINGS]

[0024] Hereinafter, the present invention will be further described with reference to the drawings and examples. In the drawings, [Figure 1] FIG. 1 is a schematic perspective structural view of an aerosol generating device according to some embodiments of the present invention. [Figure 2] FIG. 2 is a schematic perspective structural view of a heat-generating structure of the aerosol generating device shown in FIG. 1. [Figure 3] FIG. 3 is a schematic cross-sectional view of the heat-generating structure shown in FIG. 2. [Figure 4] FIG. 4 is a schematic perspective structural view of a heat-generating structure of an aerosol generating device according to another embodiment of the present invention. [Figure 5] FIG. 5 is a schematic cross-sectional view of the heat-generating structure shown in FIG. 4. [Figure 6] FIG. 6 is a schematic perspective structural view of a heat-generating structure of an aerosol generating device according to still another embodiment of the present invention. [Figure 7] FIG. 7 is a schematic cross-sectional view of the heat-generating structure shown in FIG. 6. [Figure 8] FIG. 8 is a schematic exploded structural view of the heat-generating structure shown in FIG. 6. [Figure 9] FIG. 9 is a schematic cross-sectional view of a heat-generating structure of an aerosol generating device according to a further embodiment of the present invention. [Figure 10] FIG. 10 is a schematic exploded structural view of the heat-generating structure shown in FIG. 9. [DETAILED DESCRIPTION OF EMBODIMENTS]

[0025] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the invention will be described in detail with reference to the drawings.

[0026] In the description of the present invention, terms such as "vertical direction," "axial direction," "length," "width," "top," "bottom," "summit," "bottom," "inside," and "outside" refer to directions or positional relationships based on the directions shown in the drawings or the directions or positional relationships in which the product of the present invention is always positioned when in use. These terms are used to facilitate the explanation of the present invention and to simplify the explanation, and do not indicate or imply that the device or element has a specific direction, or that it must be configured and operate in a specific direction. Therefore, they should not be interpreted as limiting the present invention.

[0027] Furthermore, the terms “first” and “second” are for descriptive purposes only and should not be understood as indicating or implying relative importance or the number of technical features described. Therefore, features limited by “first” and “second” may explicitly or implicitly include at least one such feature. In this description, “multiple” means at least two sections, e.g., two sections, three, etc., unless otherwise explicitly specified.

[0028] In the present invention, unless otherwise explicitly defined and limited, terms such as “attach,” “connect,” “join,” and “fix” should be understood in a broad sense, and may include, for example, a fixed connection, a removable connection, or an integral connection. They may be mechanical or electrical connections. Unless otherwise explicitly defined, they may be direct connections, indirect connections via an intermediate medium, internal communication between two elements, or interaction relationships between two elements. The specific meanings of these terms in the present invention can be understood by those skilled in the art depending on the context.

[0029] Figure 1 shows an aerosol generator 1 in several embodiments of the present invention, and an aerosol-forming matrix 2 detachably inserted at one end of the aerosol generator 1. In some embodiments, the aerosol generator 1 may be prismatic in shape so that it can be easily grasped by a user, and is used to bake and heat the aerosol-forming matrix 2 inserted therein at a low temperature to release the aerosol extract within the aerosol-forming matrix 2 in a non-combustible state. In some embodiments, the aerosol-forming matrix 2 may be cylindrical and may contain a solid aerosol-forming matrix 2 of treated plant leaves. Understandably, the aerosol generator 1 is not limited to a prismatic shape, and in some other embodiments, it may be cylindrical, elliptical, or other shapes.

[0030] In some embodiments, the aerosol generator 1 may include a heating structure 10 and a housing 20 on which the heating structure 10 is mounted. In some embodiments, the heating structure 10 may be cylindrical and have a removable aerosol-forming matrix 2 inserted into it, which heats and bakes the aerosol-forming matrix 2. In some embodiments, the aerosol generator 1 may further include a battery (not shown) provided in the housing 20. The battery is electrically connected to the heating structure 10 and supplies power to the heating structure 10.

[0031] Referring to Figures 2 to 8, in some embodiments, the heating structure 10 may include a tube 11 through which infrared light waves are transmitted, a heating element 12 capable of emitting infrared light waves when energized, a fixed base 13, and a temperature measuring unit 14. The heating element 12 is provided on the inner or outer surface of the tube 11 and is provided at least partially apart from the tube 11, and is used to generate heat when energized to excite infrared light waves and further heat the aerosol-forming matrix 2. Furthermore, since the heating element 12 is provided at least partially apart from the tube 11 and heats the aerosol-forming matrix 2 through infrared radiation, the problem of the user's smoking sensation being affected by the operating temperature of the heating element 12 being too high can be solved. Specifically, in this embodiment, the tube 11 transmits infrared light waves, facilitating the heating of the aerosol-forming matrix 2 by infrared light wave radiation from the heating element 12. Specifically, there is a gap between the heating element 12 and the tube 11. When energized, the heating element 12 rapidly heats up to 1000-1300°C in 1-3 seconds, and the surface temperature of the tube 11 may be controlled to 350°C or less. The atomization temperature of the entire aerosol-forming matrix 2 is controlled to 300-350°C, thereby enabling accurate atomization of the aerosol-forming matrix 2 mainly in the wavelength range of 2-5 μm. The fixed base 13 is provided at the lower open end of the tube 11, and the conductive part 122 of the heating element 12 penetrates the fixed base 13, thereby fixing the heating element 12. The temperature measuring unit 14 is provided above the fixed base 13 or partially overlaps with the fixed base 13. The temperature measuring unit 14 is provided on the tube wall of the tube 11 and is used to detect temperature changes in the tube wall and atomize the aerosol-forming matrix 2 into an aerosol at a specific temperature, thereby avoiding the effect of excessive combustion of the aerosol on the smoking sensation.

[0032] In some embodiments, the material used to manufacture the tube 11 includes quartz glass, ceramic, diamond, etc., and the tube 11 is used to heat the aerosol-forming matrix 2 by allowing infrared light waves to pass through it. In some embodiments, the tube 11 includes a cylindrical body 111 and a conical top 112 provided at the top of the cylindrical body 111 and integrally molded with the body 111.

[0033] In some embodiments, the heating element 12 may be a single vertically mounted element, or it may be wound as a heating element 121 that is helical overall. Specifically, the heating element 12 may be cylindrical overall, or it may be wound as a single helix structure, a double helix structure, an M-shaped structure, an N-shaped structure, or other shapes. Of course, as can be understood, in some other embodiments, the heating element 12 is not limited to one element, but may be two or more. The shape of the heating element 12 is not limited to a cylindrical shape, and in some embodiments, the shape of the heating element 12 may be sheet-like.

[0034] In some embodiments, the heating element 12 may be located inside the tube 11, and the heating element 12 and the inner wall of the tube 11 are spaced apart. In some embodiments, the heating element 12 includes a heating section 121 capable of generating infrared light waves when energized, and a conductive section 122 located at one end of the heating section 121 for introducing electrical energy. As shown in Figure 8, in some embodiments, the heating section 121 may be located longitudinally and includes a first heating section 1211 and a second heating section 1212 wrapped around the first heating section 1211, wherein the first heating section 1211 is linear, the second heating section 1212 is helical, and one end of the first heating section 1211 is connected to one end of the second heating section 1212. The two conductive sections 122 are connected to the other ends of the first heating section 1211 and the second heating section 1212, respectively.

[0035] In some embodiments, the heating element 121 includes a double-helix third heating section (not shown), the third heating section including a helical section and an electrical connection terminal located at one end of the helical section, the electrical connection terminal being electrically connected to a conductive part 122. In some embodiments, the heating element 12 may include a heating substrate that generates heat when energized and an infrared radiation layer. The infrared radiation layer is provided on the outer surface of the heating substrate and is used to emit infrared light waves. In some embodiments, the heating layer includes a metal substrate, which is made of a metal material having good high-temperature oxidation resistance, high stability, and resistance to deformation, such as nickel-chromium alloy wire or iron-chromium-aluminum alloy wire. The maximum operating temperature of the heating element 12 is 500°C to 1300°C. The heating substrate may be bent into a cylindrical or sheet shape, and therefore the radial dimension or thickness of the heating substrate is 0.15 mm to 0.8 mm. The thickness of the infrared radiation layer is 10 μm to 300 μm. In the field of non-combustion heating, the maximum operating temperature of the heating element in conventional technology is generally 400°C or less, but in this invention, the maximum temperature of the heating element reaches 1000°C or more. Through the innovation of this solution, the preheating time can be significantly shortened, the smoking experience can be further improved, and deterioration of the mouthfeel due to excessive combustion can be avoided.

[0036] In this embodiment, the heating element 12 further includes an antioxidant layer, which is formed between the heating substrate and the infrared radiation layer. Specifically, the antioxidant layer may be an oxide film, and the heating substrate undergoes high-temperature heat treatment to generate a dense oxide film on its surface, which serves as the antioxidant layer. Of course, it is understandable that in some other embodiments, the antioxidant layer is not limited to an oxide film formed on the heating substrate itself, and in some other embodiments, it may be an antioxidant coating applied to the outer surface of the heating substrate. The formation of the antioxidant layer ensures that the heating substrate is not oxidized or is hardly oxidized when heated in an air environment, improving the stability of the heating substrate, thereby eliminating the need for vacuum suction into the housing cavity for housing the heating element 12 inside the tube 11, filling with an inert or reducing gas, and sealing the opening, simplifying the assembly process of the entire heating structure 10 and reducing manufacturing costs. In this embodiment, the thickness of the antioxidant layer may be 1 μm to 150 μm. If the thickness of the antioxidant layer is less than 1 μm, the heat-generating substrate becomes more susceptible to oxidation. If the thickness of the antioxidant layer is greater than 150 μm, the heat conduction between the heat-generating substrate and the infrared radiation layer is affected.

[0037] In this embodiment, the infrared radiation layer may be an infrared layer. The infrared radiation layer may be formed on the side of the antioxidant layer away from the heat-generating substrate by high-temperature heat treatment in the infrared layer-forming substrate. In this embodiment, the infrared layer-forming substrate may be a substrate of silicon carbide, spinel, or a composite thereof. Of course, it is understandable that in some other embodiments, the infrared radiation layer is not limited to an infrared layer. In some other embodiments, the infrared radiation layer may be a composite infrared layer. In this embodiment, the infrared radiation layer may be formed on the side of the antioxidant layer away from the heat-generating substrate by methods such as dip coating, spray coating, or brush coating. The thickness of the infrared radiation layer may be 10 μm to 300 μm, and when the thickness of the infrared radiation layer is 10 μm to 300 μm, its thermal radiation effect is relatively good, and the atomization efficiency of the aerosol-forming matrix 2 and the mouthfeel of the atomized product are relatively good. Of course, it is understandable that in some other embodiments, the thickness of the infrared radiation layer is not limited to 10 μm to 300 μm.

[0038] In some embodiments, the heating element 12 further includes a bonding layer provided between the antioxidant layer and the infrared radiation layer, the bonding layer being used to prevent localized destruction of the heating substrate and to further improve the bonding strength between the antioxidant layer and the infrared radiation layer. In some embodiments, the bonding material in the bonding layer may be glass powder, that is, the bonding layer may be a glass powder layer.

[0039] In some embodiments, the fixed base 13 may be made of a material such as a ceramic insulating material and a PEEK high-temperature insulating material. This may include a fixed through-hole 131 provided in the fixed base 13 into which the conductive portion 122 is inserted.

[0040] Furthermore, as shown in Figures 2 and 3, in some embodiments, the temperature measuring unit 14 includes a covering section that covers the tube 11, the covering section at least partially overlapping with the first projection section of the heating element 121 on the surface of the tube 11 where the covering section is located. Preferably, in some embodiments, the temperature measuring unit 14 includes electrically connected temperature measuring sections 141 and lead sections (not shown), all of which overlap with the first projection section of the heating element 121 on the surface of the tube 11 where the covering section is located, and the lead sections are provided at the end of the temperature measuring section 141 closest to the conductive part 122, effectively solving the problem of delayed temperature measurement. The temperature measuring sections 141 are also provided on the outer or inner surface of the tube 11, directly measuring the temperature of the heating medium and controlling the atomization temperature of the entire aerosol-forming matrix 2 to 300-350°C, thereby accurately atomizing the aerosol-forming matrix 2 mainly in the wavelength range of 2-5 μm, effectively ensuring the accuracy and stability of temperature measurement.

[0041] Furthermore, as shown in Figures 4 and 5, in some other embodiments, the temperature measuring unit 14 includes a covering section that covers the tube 11, the covering section at least partially overlapping with the first projection section of the heat-generating portion 121 on the surface of the tube 11 where the covering section exists, and the covering section at least partially overlapping with the second projection section of the conductive portion 122 on the surface of the tube 11 where the covering section exists. Specifically, the temperature measuring unit 14 includes an electrically connected temperature measuring section 141 and a lead section, the portion of which overlaps with the first projection section of the heat-generating portion 121 on the surface of the tube 11 where the covering section exists, the remaining portion of which overlaps with the second projection section of the conductive portion 122 on the surface of the tube 11 where the covering section exists, and the lead section is provided at the end of the temperature measuring section 141 closest to the conductive portion 122. Such a configuration allows heat from the heat-generating portion 121 to be efficiently transferred to the temperature measuring section 141, effectively solving the problem of delayed temperature measurement. Furthermore, the temperature measurement section 141 is provided on the outer or inner surface of the tube 11 to directly measure the temperature of the heating medium and control the atomization temperature of the entire aerosol-forming matrix 2 to 300-350°C. This accurately atomizes the aerosol-forming matrix 2 mainly in the wavelength range of 2-5 μm, effectively ensuring the accuracy and stability of temperature measurement.

[0042] See also Figures 6 and 8, in some further embodiments, the temperature measuring unit 14 includes a covering section that covers the tube 11, the covering section at least partially overlapping with the second projection section of the conductive portion 122 on the surface of the tube 11 where the covering section is located. Specifically, the temperature measuring unit 14 includes electrically connected temperature measuring sections 141 and lead sections, all of which overlap with the second projection section of the conductive portion 122 on the surface of the tube 11 where the covering section is located, and the lead sections are provided at the ends of the temperature measuring sections 141 closest to the conductive portion 122. This allows heat from the heat generating portion 121 to be efficiently transferred to the temperature measuring sections 141, effectively solving the problem of delayed temperature measurement. Furthermore, the temperature measurement section 141 is provided on the outer or inner surface of the tube 11 to directly measure the temperature of the heating medium and control the atomization temperature of the entire aerosol-forming matrix 2 to 300-350°C. This accurately atomizes the aerosol-forming matrix 2 mainly in the wavelength range of 2-5 μm, effectively ensuring the accuracy and stability of temperature measurement.

[0043] In some embodiments, the temperature measuring section 141 is manufactured, at least in part, from a TCR material. The TCR material is formed by at least one of screen printing, physical vapor deposition, spray coating, and dipping. In some embodiments, the TCR material may be helical, and preferably, the temperature coefficient of the TCR material is greater than 300, thereby making the measurement data more accurate. Understandably, the temperature coefficient of the TCR material may be set to less than 300. Understandably, the TCR material is not limited to helical, but may be sheet-like, tubular, or the like.

[0044] Figures 9 and 10 show a heating structure 10a in a further embodiment of the present invention, the main differences of which are as follows compared to the first embodiment. In some embodiments, the heating structure 10a may include a tube 11a through which infrared light waves are transmitted, a heating element 12a, and a temperature measuring unit 13a. The heating element 12a is provided on the inner or outer surface of the tube 11a, and the heating element 12a and the tube 11a are provided at least partially spaced apart and used to generate infrared light waves when energized and to heat the aerosol-forming matrix. Specifically, in this embodiment, the tube 11a transmits infrared light waves to facilitate heating of the aerosol-forming matrix by infrared light wave emission from the heating element 12. Specifically, there is a gap between the heating element 12a and the tube 11a. When energized, the heating element 12a rapidly heats up to 1000-1300°C in 1-3 seconds, and the surface temperature of the tube 11a may be controlled to 350°C or lower. The atomization temperature of the entire aerosol-forming matrix is ​​controlled to 300-350°C, thereby enabling accurate atomization of the aerosol-forming matrix mainly in the wavelength range of 2-5 μm. The temperature measuring unit 13a is provided on the tube 11a and is used to detect temperature changes in the tube wall and atomize the aerosol-forming matrix into an aerosol at a specific temperature, thereby avoiding the effect of excessive combustion of the aerosol on the smoking sensation.

[0045] In some embodiments, the tube 11a includes a first sleeve 111a and a second sleeve 112a fitted over the outer circumference of the first sleeve 111a, with a gap between the first sleeve 111a and the second sleeve 112a, which forms a containment cavity for housing a heating element 12a, the heating element 12a being located on the outer circumference of the first sleeve 111a and spaced apart from the outer wall of the first sleeve 111a, and a heating cavity for heating an aerosol-forming matrix being formed inside the first sleeve 111a.

[0046] In some embodiments, the first sleeve 111a may be cylindrical, and the material used to manufacture it may include quartz glass, ceramic, diamond, etc., and the first sleeve 111a is used to heat the aerosol-forming matrix. Understandably, the first sleeve 111a is not limited to a cylindrical shape, but may have other shapes such as a rectangular tube or an elliptical tube.

[0047] In some embodiments, the second sleeve 112a may be cylindrical and have a reflective layer 1121a on its inside, which is used to reflect infrared light waves emitted to the outside by the heating element 12a and to improve energy efficiency. Understandably, the second sleeve 112a is not limited to a cylindrical shape and may have other shapes such as a rectangular tube or an elliptical tube.

[0048] In some embodiments, the second sleeve 112a may further include a fixing structure used to fix the heating element 12a.

[0049] In some embodiments, the heating element 12a may include a heating portion 121a capable of emitting infrared radiation when energized, and two conductive portions 122a provided at one end of the heating portion 121a for introducing electrical energy. The heating portion 121a includes a helical first heating section, the first heating section including a first end 1201a and a second end 1202a provided opposite the first end 1201a, and the two conductive portions 122a are connected to the first end 1201a and the second end 1202a, respectively.

[0050] In some embodiments, the temperature measuring unit 13a may include an electrically connected temperature measuring section 131a and a lead section, the temperature measuring section 131a being located on the tube 11a near one end of the heat generating section 121a, and the lead section being located at the end of the temperature measuring section 131a away from the conductive section 122a. This allows heat from the heat generating section 121a to be efficiently transferred to the temperature measuring section 131a, effectively solving the problem of delayed temperature measurement. The temperature measuring section 131a may also be located on the outer or inner surface of the tube 11a, directly measuring the temperature of the heating medium and controlling the atomization temperature of the entire aerosol-forming matrix to 300-350°C, thereby accurately atomizing the aerosol-forming matrix mainly in the wavelength range of 2-5 μm and effectively ensuring the accuracy and stability of temperature measurement.

[0051] The above embodiments represent preferred embodiments of the present invention, and while the description is relatively specific and detailed, it should not be understood as limiting the scope of the patent of the present invention. Those skilled in the art can freely combine the above technical features and make some modifications and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, any transformations and modifications equivalent to the claims of the present invention should all be included within the claims of the present invention.

Claims

1. It is a heat-generating structure, The device includes a heating element capable of emitting infrared light waves when energized, a tube through which the infrared light waves pass, and a temperature measuring unit for measuring temperature, wherein the heating element and the tube wall of the tube are provided at least partially spaced apart, the heating element includes a heating portion and a conductive portion connected to one end of the heating portion, and the temperature measuring unit is provided on the tube wall of the tube. The heating element is characterized by comprising a heating base that generates heat when energized, an infrared radiation layer provided on the outer surface of the heating base that emits infrared light waves, and an oxidation prevention layer formed between the heating base and the infrared radiation layer.

2. The heating structure according to claim 1, wherein the temperature measuring unit includes a covering section covering the tube, the covering section at least partially overlapping with a first projection section of the heating portion on the surface of the tube on which the covering section exists, and / or the covering section at least partially overlapping with a second projection section of the conductive portion on the surface of the tube on which the covering section exists.

3. The heating structure according to claim 2, wherein the temperature measuring unit includes electrically connected temperature measuring sections and lead sections, all of which overlap the first projection section of the heating portion on the surface of the tube where the covering section is located, and the lead sections are provided at the end of the temperature measuring sections closest to the conductive portion.

4. The heating structure according to claim 2, wherein the temperature measuring unit includes an electrically connected temperature measuring section and a lead section, a portion of the temperature measuring section overlaps with the first projection section of the heating portion on the surface of the tube in which the covering section exists, the remaining portion of the temperature measuring section overlaps with the second projection section of the conductive portion on the surface of the tube in which the covering section exists, and the lead section is provided at the end of the temperature measuring section closest to the conductive portion.

5. The heating structure according to claim 2, wherein the temperature measuring unit includes electrically connected temperature measuring sections and lead sections, all of which overlap the second projection section of the conductive portion on the surface of the tube where the covering section is located, and the lead sections are provided at the end of the temperature measuring sections closest to the conductive portion.

6. The heating structure according to claim 1, wherein the temperature measuring unit includes an electrically connected temperature measuring section and a lead section, the temperature measuring section is provided in the tube near one end of the heating section, and the lead section is provided at the end of the temperature measuring section away from the conductive section.

7. The heating structure according to claim 3, characterized in that the temperature measuring section is manufactured from TCR material in at least a portion thereof.

8. The heat-generating structure according to claim 7, characterized in that the temperature coefficient of the TCR material is greater than 300.

9. The heating structure according to claim 3, characterized in that the temperature measurement section is spiral-shaped.

10. The heating structure according to claim 3, characterized in that the temperature measurement section is provided on the outer or inner surface of the tube.

11. The heating structure according to claim 7, characterized in that the temperature measurement section is formed of the TCR material.

12. The heating structure according to claim 1, wherein the heating portion is provided in the longitudinal direction and includes a linear first heating section and a spiral second heating section wound around the outside of the first heating section, one end of the first heating section is electrically connected to one end of the second heating section, and the other end of the first heating section and the other end of the second heating section are electrically connected to the conductive portion.

13. The heating structure according to claim 1, wherein the heating portion includes a double helix third heating section, the third heating section includes a helical section and an electrical connection terminal located at one end of the helical section, and the electrical connection terminal is electrically connected to the conductive portion.

14. The heating structure according to claim 1, characterized in that the heating element is provided inside the tube, and the heating element and the inner wall of the tube are spaced apart.

15. The tube includes a first sleeve and a second sleeve fitted over the outer circumference of the first sleeve. There is a gap between the first sleeve and the second sleeve, and this gap forms a cavity for housing the heating element. The heating structure according to claim 1, characterized in that the heating element is provided on the outer circumference of the first sleeve, spaced apart from the outer wall of the first sleeve, and a heating cavity for heating the aerosol-forming matrix is ​​formed on the inside of the first sleeve.

16. The heating structure according to claim 15, characterized in that the inner wall of the second sleeve is provided with a reflective layer that reflects the infrared light waves.

17. The heating structure according to claim 14, characterized in that a fixed base is provided at the lower part of the tube, and the temperature measuring unit is provided above the fixed base or partially overlaps with the fixed base.

18. The heating structure according to claim 1, characterized in that the maximum operating temperature of the heating element is 500°C to 1300°C.

19. Aerosol generator, An aerosol generating device characterized by including the heat-generating structure described in any one of claims 1 to 18.

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