Aerosol generator and its heat generating 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 particularly to an aerosol generating device and its heat generating structure. [Background technology]

[0002] In the related art, an aerosol-generating device is an electronic device that heats, rather than burns, an aerosol-forming matrix (e.g., a solid matrix, such as a plant leaf product like tobacco). Generally, the aerosol-forming matrix is ​​typically atomized at temperatures below 350°C. A drawback of this heating method is that, because the heating element transfers heat to the aerosol-forming matrix directly or indirectly through a solid material, the operating temperature of the heating element must not be too high; otherwise, the aerosol-forming matrix will over-burn, adversely affecting the smoking experience of the aerosol-generating device. Therefore, temperature detection and control become particularly important when the heating element operates at temperatures above 400°C. Summary of the Invention [Problem to be solved by the invention]

[0003] The technical problem that the present invention aims to solve is to provide an improved aerosol generating device and its heat generating structure. [Means for solving the problem]

[0004] The technical solution adopted by the present invention to solve the technical problems is as follows: a heat-generating structure, comprising: a heat-generating 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 heat-generating element and a tube wall of the tube are at least partially spaced apart from each other; the heat-generating element includes a heat-generating portion and a conductive portion connected to one end of the heat-generating portion; and the temperature measuring unit is provided on the tube wall of the tube.

[0005] In some embodiments, the temperature measurement unit includes a covered section disposed on the tube, the covered section at least partially overlapping a first projected section of the heat generating portion on the surface of the tube on which the covered section is located, and / or the covered section at least partially overlapping a second projected section of the conductive portion on the surface of the tube on which the covered section is located.

[0006] In some embodiments, the temperature measurement unit includes electrically connected temperature measurement sections and lead sections, all of the temperature measurement sections overlap with the first projected section of the heat generating portion on the surface of the tube where the covering section is present, and the lead sections are provided at the ends of the temperature measurement sections that are close to the conductive portion.

[0007] In some embodiments, the temperature measurement unit includes an electrically connected temperature measurement section and a lead section, a portion of the temperature measurement section overlapping with the first projected section of the heat generating portion on the surface of the tube where the covering section is present, and a remaining portion of the temperature measurement section overlapping with the second projected section of the conductive portion on the surface of the tube where the covering section is present, and the lead section being provided at an end of the temperature measurement section close to the conductive portion.

[0008] In some embodiments, the temperature measurement unit includes electrically connected temperature measurement sections and lead sections, all of the temperature measurement sections overlap with the second projected section of the conductive portion on the surface of the tube where the covering section is present, and the lead sections are provided at ends of the temperature measurement sections that are close to the conductive portion.

[0009] In some embodiments, the temperature measurement unit includes an electrically connected temperature measurement section and a lead section, the temperature measurement section being provided on the tube near one end of the heat generating portion, and the lead section being provided at an end of the temperature measurement section away from the conductive portion.

[0010] In some embodiments, the temperature measurement section is at least partially made of a TCR material.

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

[0012] In some embodiments, the temperature measurement section is helical.

[0013] In some embodiments, the temperature measurement section is provided on the exterior or interior surface of the tube.

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

[0015] In some embodiments, the heat generating portion is arranged in the longitudinal direction and includes a linear first heat generating section and a spiral second heat generating section wound around the first heat generating section, one end of the first heat generating section is electrically connected to one end of the second heat generating section, and the other end of the first heat generating section and the other end of the second heat generating section are electrically connected to the conductive portion.

[0016] In some embodiments, the heat generating portion includes a double-spiral third heat generating section, the third heat generating section including a spiral section and an electrical connection end located at one end of the spiral section, the electrical connection end being electrically connected to the conductive portion.

[0017] In some embodiments, the heating element is disposed 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 disposed over the first sleeve; a gap is provided between the first sleeve and the second sleeve, the gap being a receiving cavity for receiving the heating element; The heating element is provided on the outer periphery of the first sleeve and 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 measurement unit is provided above the fixed base or partially overlaps the fixed base.

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

[0022] The present invention also provides an aerosol generating device comprising the heat generating structure described above. [Effects of the Invention]

[0023] The beneficial effects of the present invention are as follows: The heating structure of the present invention includes a heating element capable of emitting infrared light waves when energized and a tube through which infrared light waves are transmitted, and the heating element and the tube wall are at least partially spaced apart, thereby solving the problem of the heating element's temperature being too high and affecting the user's smoking experience when the maximum operating temperature of the heating element is higher than 400°C. Furthermore, the present invention further includes a temperature measuring unit that is mounted on the tube wall, thereby achieving the technical effects of highly accurate temperature measurement, efficient temperature measurement, and a simple structure. [Brief explanation of the drawings]

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

[0025] In order to make the technical features, objects and effects of the present invention more clearly understandable, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0026] In the description of the present invention, the orientations or positional relationships indicated by terms such as "longitudinal," "axial," "length," "width," "upper," "lower," "top," "bottom," "inner," and "outer" are based on the orientations shown in the drawings or the orientations or positional relationships that are always assumed when the product of the present invention is in use, and are intended to facilitate and simplify the description of the present invention. They do not indicate or imply that the device or element must have a specific orientation, or be configured or operate in a specific orientation, and therefore should not be construed as limiting the present invention.

[0027] Furthermore, the terms "first" and "second" are for descriptive purposes only and cannot be understood to indicate or imply relative importance or the number of technical features depicted. Thus, a feature qualified by "first" or "second" may explicitly or implicitly include at least one of that feature. In describing the present invention, "plurality" means at least two sections, e.g., two sections, three, etc., unless otherwise expressly specified.

[0028] In the present invention, unless otherwise expressly specified and limited, the terms "attach," "couple," "connect," "fixed," etc. should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection. They may also refer to a mechanical connection or an electrical connection. Unless otherwise expressly specified, they may refer to a direct connection, an indirect connection via an intermediate medium, an internal communication between two elements, or an interactive relationship between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art depending on the situation.

[0029] 1 shows an aerosol-generating device 1 according to some embodiments of the present invention, and an aerosol-forming matrix 2 removably attached to one end of the aerosol-generating device 1. In some embodiments, the aerosol-generating device 1 may be prismatic so that it can be easily held by a user, and the aerosol-forming matrix 2 inserted therein is baked at a low temperature to heat it and release the aerosol extract contained in the aerosol-forming matrix 2 in a non-combustible state. In some embodiments, the aerosol-forming matrix 2 may be cylindrical and may include a solid aerosol-forming matrix 2 of treated plant leaves. It should be understood that the aerosol-generating device 1 is not limited to a prismatic shape, and in other embodiments, it may have other shapes, such as a cylindrical shape or an elliptical cylindrical shape.

[0030] In some embodiments, the aerosol-generating device 1 may include a heat-generating structure 10 and a housing 20 for receiving the heat-generating structure 10. In some embodiments, the heat-generating structure 10 may be cylindrical, and the aerosol-forming matrix 2 may be removably inserted therein to heat and bake the aerosol-forming matrix 2. In some embodiments, the aerosol-generating device 1 may further include a battery (not shown) disposed within the housing 20. The battery is electrically connected to the heat-generating structure 10 and supplies power to the heat-generating structure 10.

[0031] 2 to 8 , in some embodiments, the heat-generating structure 10 may include a tube 11 that is transparent to infrared light waves, a heating element 12 that can emit 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 at least partially spaced apart from the tube 11. When energized, the heating element 12 generates heat to excite infrared light waves, which in turn heats the aerosol-forming matrix 2. Furthermore, the heating element 12 is at least partially spaced apart from the tube 11 and heats the aerosol-forming matrix 2 through infrared radiation, thereby resolving the problem of the heating element 12 having an excessively high operating temperature that affects the user's smoking experience. Specifically, in this embodiment, the tube 11 is transparent to infrared light waves, facilitating the heating of the aerosol-forming matrix 2 by the 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 within 1-3 seconds. The surface temperature of the tube 11 may be controlled to 350°C or less, and the atomization temperature of the entire aerosol-forming matrix 2 is controlled to 300-350°C, thereby enabling the aerosol-forming matrix 2 to be accurately atomized primarily 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 portion 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 or partially overlaps the fixed base 13. The temperature measuring unit 14 is provided on the wall of the tube 11 and is used to detect temperature changes on the wall and ensure that the aerosol-forming matrix 2 is atomized into an aerosol at a specific temperature, thereby avoiding excessive combustion of the aerosol-forming matrix 2 and affecting the smoking experience of the aerosol.

[0032] In some embodiments, the tube 11 is made of a material such as quartz glass, ceramic, or diamond, and the tube 11 is used to transmit infrared light waves and heat the aerosol-forming matrix 2. In some embodiments, the tube 11 includes a cylindrical body 111 and a conical top 112 that is provided on top of the cylindrical body 111 and is integrally molded with the body 111.

[0033] In some embodiments, the heating element 12 may be a single piece disposed vertically, or may be wound as a generally spiral heating portion 121. Specifically, the heating element 12 may be generally cylindrical, or may be wound as a single spiral, a double spiral, an M-shaped, an N-shaped, or other shaped configuration. Of course, it is understood that in other embodiments, the heating element 12 is not limited to a single piece, but may be two or more pieces. The shape of the heating element 12 is not limited to a cylindrical shape, and in some embodiments, the heating element 12 may be in the form of a sheet.

[0034] In some embodiments, the heating element 12 may be provided inside the tube 11, and the heating element 12 and the inner wall of the tube 11 may be spaced apart. In some embodiments, the heating element 12 includes a heating portion 121 capable of generating infrared light waves when energized, and a conductive portion 122 provided at one end of the heating portion 121 for introducing electrical energy. As shown in FIG. 8 , in some embodiments, the heating portion 121 may be provided in a longitudinal direction and include a first heating section 1211 and a second heating section 1212 wound around the first heating section 1211, the first heating section 1211 being linear, and the second heating section 1212 being spiral, and one end of the first heating section 1211 being connected to one end of the second heating section 1212. Two conductive portions 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 unit 121 includes a double-spiral third heating section (not shown), which includes a spiral section and an electrical connection end located at one end of the spiral section, the electrical connection end being electrically connected to the conductive portion 122. In some embodiments, the heating element 12 may include a heating base that generates heat when energized and an infrared emitting layer. The infrared emitting layer is disposed on the outer surface of the heating base and is used to radiate infrared light waves. In some embodiments, the heating layer includes a metal base, which is made of a metal material having properties such as 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 base may be bent into a cylindrical or sheet shape, and the radial dimension or thickness of the heating base 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 the prior art is generally 400°C or less, but in the present 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 the deterioration of the mouthfeel due to over-burning can be avoided.

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

[0037] In this embodiment, the infrared emitting layer may be an infrared layer. The infrared layer may be formed on the side of the antioxidant layer away from the heat-generating substrate by high-temperature heat treatment on an 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 understood that in other embodiments, the infrared emitting layer is not limited to an infrared layer. In other embodiments, the infrared emitting layer may be a composite infrared layer. In this embodiment, the infrared layer may be formed on the side of the antioxidant layer away from the heat-generating substrate by dip coating, spray coating, brush coating, or other methods. The thickness of the infrared emitting layer may be 10 μm to 300 μm. When the thickness of the infrared emitting layer is 10 μm to 300 μm, the 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 understood that in other embodiments, the thickness of the infrared emitting layer is not limited to 10 μm to 300 μm.

[0038] In some embodiments, the heating element 12 further includes a bonding layer between the antioxidant layer and the infrared emitting layer, which can be used to prevent localized damage to the heating base and further improve the bonding strength between the antioxidant layer and the infrared emitting layer. In some embodiments, the bonding material in the bonding layer can be glass powder, i.e., the bonding layer can be a glass powder layer.

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

[0040] 2 and 3, in some embodiments, the temperature measuring unit 14 includes a covering section disposed on the tube 11, the covering section at least partially overlapping a first projected section of the heat generating portion 121 on the surface of the tube 11 where the covering section is present. 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 projected section of the heat generating portion 121 on the surface of the tube 11 where the covering section is present, and the lead sections are disposed at the ends of the temperature measuring sections 141 near the conductive portions 122, thereby effectively resolving the problem of delayed temperature measurement. Alternatively, the temperature measuring sections 141 may be disposed on the outer or inner surface of the tube 11 and directly measure the temperature of the heating medium to control the atomization temperature of the entire aerosol-forming matrix 2 to 300-350°C, thereby accurately atomizing the aerosol-forming matrix 2 primarily in the wavelength range of 2-5 μm and effectively ensuring the accuracy and stability of temperature measurement.

[0041] 4 and 5 , in some other embodiments, the temperature measurement unit 14 includes a covering section covered on the tube 11, the covering section at least partially overlapping a first projected section of the heat-generating portion 121 on the surface of the tube 11 where the covering section is located, and the covering section at least partially overlapping a second projected section of the conductive portion 122 on the surface of the tube 11 where the covering section is located. Specifically, the temperature measurement unit 14 includes an electrically connected temperature measurement section 141 and a lead section, a portion of the temperature measurement section 141 overlapping the first projected section of the heat-generating portion 121 on the surface of the tube 11 where the covering section is located, and the remaining portion of the temperature measurement section 141 overlapping the second projected section of the conductive portion 122 on the surface of the tube 11 where the covering section is located, and the lead section is provided at an end of the temperature measurement section 141 close to the conductive portion 122. This configuration allows heat from the heat-generating portion 121 to be efficiently transferred to the temperature measurement section 141, effectively solving the problem of delayed temperature measurement. In addition, the temperature measurement section 141 is provided on the outer or inner surface of the tube 11, and can directly measure the temperature of the heating medium and control 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 and effectively ensuring the accuracy and stability of temperature measurement.

[0042] 6 and 8 , in some embodiments, the temperature measuring unit 14 includes a covering section that is covered on the tube 11, and the covering section at least partially overlaps with the second projected 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, and all of the temperature measuring sections 141 overlap with the second projected 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 ends of the temperature measuring sections 141 that are close 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. In addition, the temperature measurement section 141 is provided on the outer or inner surface of the tube 11, and can directly measure the temperature of the heating medium and control 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 and effectively ensuring the accuracy and stability of temperature measurement.

[0043] In some embodiments, the temperature measurement section 141 is at least partially fabricated with 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 spiral-shaped, and preferably, the temperature coefficient of the TCR material is greater than 300, which makes the measurement data more accurate. It can be understood that the temperature coefficient of the TCR material can be set to less than 300. It can be understood that the TCR material is not limited to being spiral-shaped, and can also be in the form of a sheet, a tube, or the like.

[0044] 9 and 10 show a heating structure 10a according to a further embodiment of the present invention. The main differences between the heating structure 10a according to the first embodiment are as follows: 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 measurement unit 13a. The heating element 12a is disposed on the inner or outer surface of the tube 11a, and the heating element 12a and the tube 11a are at least partially spaced apart from each other. The heating element 12a and the tube 11a are used to generate infrared light waves when energized and heat the aerosol-forming matrix. Specifically, in this embodiment, the tube 11a is transparent to infrared light waves, facilitating the heating of the aerosol-forming matrix by the infrared light wave radiation from the heating element 12a. 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 within 1-3 seconds. The surface temperature of the tube 11a may be controlled to 350°C or less, and the atomization temperature of the entire aerosol-forming matrix is ​​controlled to 300-350°C, thereby enabling the aerosol-forming matrix to be accurately atomized primarily 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 on the tube wall to atomize the aerosol-forming matrix into an aerosol at a specific temperature, thereby avoiding the impact of excessive combustion of the aerosol-forming matrix on the smoking experience of the aerosol.

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

[0046] In some embodiments, the first sleeve 111a may be cylindrical, and the material for manufacturing the first sleeve 111a may include quartz glass, ceramic, diamond, etc. The first sleeve 111a is used to heat the aerosol-forming matrix. It should be understood that the first sleeve 111a is not limited to a cylindrical shape, and may have other shapes such as a rectangular cylinder, an elliptical cylinder, etc.

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

[0048] In some embodiments, the second sleeve 112a may further include a fastening structure, which is used to fasten 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 spiral first heating section, the first heating section including a first end 1201a and a second end 1202a opposite the first end 1201a, and the two conductive portions 122a connected to the first end 1201a and the second end 1202a, respectively.

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

[0051] The above examples merely represent preferred embodiments of the present invention, and although the descriptions are relatively specific and detailed, it should be understood that this does not limit the scope of the present invention. Those skilled in the art can freely combine the above technical features and make slight 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, all conversions and modifications equivalent to the scope of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A heat generating structure, A heating structure comprising: a heating element capable of emitting infrared light waves when energized; a tube through which the infrared light waves pass; and a temperature measurement unit for measuring temperature, wherein the heating element and a tube wall of the tube are 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 measurement unit is provided on the tube wall of the tube.

2. 2. The heating structure of claim 1, wherein the temperature measuring unit includes a covered section covered on the tube, the covered section at least partially overlapping a first projected section of the heat generating portion on the surface of the tube where the covered section is present, and / or the covered section at least partially overlapping a second projected section of the conductive portion on the surface of the tube where the covered section is present.

3. 3. The heating structure of claim 2, wherein the temperature measurement unit includes electrically connected temperature measurement sections and lead sections, all of the temperature measurement sections overlap with the first projected section of the heat generating portion on the surface of the tube where the covering section is present, and the lead sections are provided at ends of the temperature measurement sections close to the conductive portion.

4. 3. The heating structure of claim 2, wherein the temperature measurement unit includes an electrically connected temperature measurement section and a lead section, a portion of the temperature measurement section overlapping with the first projected section of the heat generating portion on the surface of the tube where the covering section is present, and a remaining portion of the temperature measurement section overlapping with the second projected section of the conductive portion on the surface of the tube where the covering section is present, and the lead section is provided at an end of the temperature measurement section close to the conductive portion.

5. 3. The heat generating structure of claim 2, wherein the temperature measurement unit includes an electrically connected temperature measurement section and a lead section, all of the temperature measurement sections overlap with the second projected section of the conductive portion on the surface of the tube where the covering section is present, and the lead section is provided at an end of the temperature measurement section close to the conductive portion.

6. 2. The heating structure of claim 1, wherein the temperature measurement unit includes an electrically connected temperature measurement section and a lead section, the temperature measurement section being provided on the tube near one end of the heat generating portion, and the lead section being provided at an end of the temperature measurement section away from the conductive portion.

7. 7. The heat generating structure according to claim 3, wherein the temperature measuring section is at least partially made of a TCR material.

8. 8. The heat generating structure of claim 7, wherein the temperature coefficient of the TCR material is greater than 300.

9. The heat generating structure according to any one of claims 3 to 6, characterized in that the temperature measuring section is spiral.

10. The heat generating structure according to any one of claims 3 to 6, characterized in that the temperature measuring section is provided on the outer surface or the inner surface of the tube.

11. 8. The heat generating structure of claim 7, wherein the temperature measuring section is formed using the TCR material by at least one of screen printing, physical vapor deposition, spray coating, and dipping.

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

13. 2. The heat generating structure of claim 1, wherein the heat generating portion includes a double-spiral third heat generating section, the third heat generating section including a spiral section and an electrical connection end located at one end of the spiral section, the electrical connection end being electrically connected to the conductive portion.

14. The heat generating structure according to claim 1 , wherein the heat generating element is provided inside the tube, and the heat generating element and the inner wall of the tube are spaced apart.

15. The tube includes a first sleeve and a second sleeve that is fitted over the outer periphery of the first sleeve, a gap is provided between the first sleeve and the second sleeve, the gap serving as a receiving cavity for receiving the heating element; 2. The heating structure of claim 1, wherein the heating element is provided on the outer periphery of the first sleeve and 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.

16. 16. The heat generating structure according to claim 15, wherein the second sleeve has an inner wall provided with a reflective layer for reflecting the infrared light waves.

17. The heat generating structure according to claim 14 , wherein 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 the fixed base.

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

19. An aerosol generating device, comprising: An aerosol generating device, comprising the heat generating structure according to any one of claims 1 to 18.

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