Aerosol generating device and heating structure

Abstract

The present invention relates to an aerosol generating device and a heating structure. The heating structure comprises a heating element, an infrared light transmissive tube body, a fixing element, and a temperature measuring element. The tube body is sleeved over at least part of the outer periphery of the heating element and is provided with a tube opening for inserting the heating element; the heating element is provided with a heating portion provided in the tube body, and the heating portion is at least partially spaced apart from the inner wall of the tube body; the fixing element is at least partially mounted in the tube body and comprises a first end and a second end which are opposite to each other, and the first end is provided towards the heating portion; the first end is provided with a positioning structure for positioning and mounting the temperature measuring element; at least part of the temperature measuring element extends from the first end to the second end, and the temperature measuring element is provided with a temperature measuring portion; and the temperature measuring portion is at least partially provided on the positioning structure. The heating structure uses the positioning structure to prevent misalignment of the temperature measuring element and to prevent displacement of the temperature measuring element caused by a pulling force, thereby ensuring the temperature measuring accuracy of the temperature measuring element.

Description

Aerosol generating device and heating structure Technical Field

[0001] The present invention relates to the field of atomization, and in particular to an aerosol generating device and a heating structure. Background Art

[0002] The aerosol generating device of the related technology includes a temperature measuring element, and the installation space of its temperature measuring part is very narrow. When assembling the temperature measuring element, the temperature measuring part is prone to assembly position deviation. In addition, during the operation of the aerosol generating device, the position of the temperature measuring part is easily offset due to thermal expansion and contraction, thereby affecting the temperature measurement effect and even causing the temperature measurement to fail. Summary of the Invention

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

[0004] The technical solution adopted by the present invention to solve the technical problem is: constructing a heating structure, including a heating element, an infrared light-transmitting tube, a fixing part and a temperature measuring element:

[0005] The tube body is sleeved on at least a portion of the outer circumference of the heating element and has a tube opening for the heating element to be installed;

[0006] The heating element has a heating portion disposed in the tube body, and at least a portion of the heating portion is spaced apart from the inner wall of the tube body;

[0007] The fixing member is at least partially installed in the tube body and includes a first end and a second end that are oppositely arranged, and the first end is arranged toward the heating portion; a positioning structure for positioning and installing the temperature measuring element is provided on the first end;

[0008] The temperature measuring element at least partially extends from the first end to the second end, and the temperature measuring element has a temperature measuring portion; the temperature measuring portion is at least partially disposed on the positioning structure.

[0009] In some embodiments, the positioning structure includes a positioning step disposed at the first end; and the temperature measuring portion is at least partially disposed in the positioning step.

[0010] In some embodiments, the positioning structure includes a first positioning portion and a second positioning portion protruding from the first end.

[0011] The length of the second positioning portion protruding from the first end is greater than the length of the first positioning portion protruding from the first end, thereby forming the positioning step;

[0012] Alternatively, the positioning structure includes a first positioning portion protruding from the first end, and the positioning step is formed between the first positioning portion and the first end of the fixing member.

[0013] In some embodiments, a portion of the second positioning portion that is higher than the first positioning portion is blocked between the temperature measuring portion and the heating element.

[0014] In some embodiments, the fixing member is provided with an isolation structure at the first end, the temperature measuring portion is located on a side of the isolation structure opposite to a portion of the heating element, and the temperature measuring portion is isolated from the heating element by the isolation structure.

[0015] In some embodiments, the temperature measuring element further includes a first electrical connection portion and a second electrical connection portion connected to the temperature measuring portion and at least partially spaced apart; the first electrical connection portion and the second electrical connection portion both extend from the first end to the second end and are positioned by the positioning structure.

[0016] In some embodiments, a guide channel is provided on the fixing member, and the guide channel extends from the first end to the second end; the first electrical connection portion and the second electrical connection portion are at least partially installed in the guide channel.

[0017] In some embodiments, a partition portion is provided on the fixing member, the partition portion at least partially protrudes from the first end, and is provided between the first electrical connection portion and the second electrical connection portion.

[0018] In some embodiments, a first insulating structure is provided on at least a portion of the first electrical connection portion;

[0019] And / or, a second insulating structure is provided on at least a portion of the second electrical connection portion;

[0020] And / or, the temperature measuring element includes a third insulating structure, the third insulating structure is sleeved on at least a portion of the first electrical connecting portion and the second electrical connecting portion, and is tightly fitted with the fixing member;

[0021] And / or, the fixing member and / or the positioning structure is an insulating member.

[0022] In some embodiments, the heating element includes a first conductive portion and a second conductive portion connected to the heating portion, and the first conductive portion and the second conductive portion extend toward the nozzle;

[0023] The fixing member is provided with a channel for the first conductive part and / or the second conductive part to pass through.

[0024] In some embodiments, the fixing member is tightly fitted with the tube body;

[0025] and / or, the fixing member is tightly fitted with at least a portion of the temperature measuring element;

[0026] And / or, the temperature measuring part is tightly fitted with the tube body.

[0027] The present invention also constructs an aerosol generating device, which includes the heating structure of the present invention and a power supply component connected to the heating structure.

[0028] The implementation of the aerosol generating device and heating structure of the present invention has the following beneficial effects: the heating structure provides a positioning structure on the fixing part, thereby enabling the temperature measuring part of the temperature measuring element to be positioned and installed in the tube body and located between the tube mouth and the heating part, thereby avoiding misalignment of the temperature measuring element and preventing the temperature measuring element from being pulled and offset, thereby ensuring the accuracy of temperature measurement by the temperature measuring element. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0030] FIG1 is a schematic diagram of a heating structure of an aerosol generating device in a first embodiment of the present invention;

[0031] FIG2 is a cross-sectional view of the heating structure shown in FIG1 ;

[0032] FIG3 is a schematic diagram of the structural decomposition of the heating structure shown in FIG1 ;

[0033] FIG4 is a schematic diagram of a partial structure of the heating structure shown in FIG1 ;

[0034] FIG5 is a schematic structural diagram of a temperature measurement component of the heating structure shown in FIG4 ;

[0035] FIG6 is an enlarged schematic diagram of a partial structure of the temperature measurement assembly shown in FIG5 ;

[0036] FIG7 is a schematic structural diagram of a temperature measuring element of the heating structure shown in FIG4 ;

[0037] FIG8 is a schematic structural diagram of a fixing member of the temperature measurement assembly shown in FIG5 ;

[0038] FIG9 is a schematic diagram of a partial structure of a heating structure of an aerosol generating device in a second embodiment of the present invention;

[0039] FIG10 is a schematic structural diagram of a temperature measuring element of the heating structure shown in FIG9 . DETAILED DESCRIPTION

[0040] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the references to "upper," "lower," "inner," and "outer," and other references to orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are constructed and operated in specific orientations. These references are intended solely to facilitate the description of the present invention and do not necessarily require the device or component to have a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0041] It should also be noted that, unless otherwise expressly specified or limited, terms such as "connected," "fixed," and "disposed" should be broadly construed. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct connections or indirect connections through an intermediary; and connections between two elements, including internal communication or interaction between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" on the other element, or one or more intervening elements may be present.

[0042] Figure 1 illustrates a first embodiment of an aerosol-generating device according to the present invention. This aerosol-generating device can heat an aerosol-generating substrate using a heat-without-combustion method. In some embodiments, the aerosol-generating substrate can be cylindrical and can be a solid material in the form of strips, sheets, granules, or an integral molding, made from the leaves and / or stems of a plant (e.g., tobacco). Fragrance components can be further added to this solid material. The aerosol-generating device can include a heating structure 1 and a power supply assembly (not shown). The heating structure 1 can be at least partially inserted into the aerosol-generating substrate to heat the aerosol-generating substrate by radiating infrared light, causing the aerosol-generating substrate to generate an aerosol for inhalation by the user. The power supply assembly (not shown) is connected to the heating structure 1 to supply power to the heating structure 1.

[0043] As shown in Figures 1 to 3, in this embodiment, the heating structure 1 may include a heating element 10, a tube body 20, a temperature measuring element 31, and a fixing member 32. The heating element 10 is partially disposed in the tube body 20 and is used to radiate infrared light, which passes through the tube body 20 and enters the aerosol generating matrix. In some embodiments, when powered on, the heating element 10 can quickly heat up to about 1000°C, while the surface temperature of the tube body 20 can be controlled at about 350°C, and the atomization temperature of the aerosol generating matrix is ​​controlled at 300-350°C, achieving precise atomization of the aerosol generating matrix mainly in the infrared light 2-4.75um band and 8-11μm band. The tube body 20 is covered on at least a portion of the heating element 10 and allows infrared light to pass into the aerosol generating matrix. The temperature measuring element 31 is passed through the fixing member 32 and tightly fits with the fixing member 32, and the two can form a temperature measuring component 30. The temperature measuring element 31 is partially exposed outside the fixing member 32 and can be used to measure the temperature inside the tube body 20, thereby facilitating temperature control of the heating element 10. The fixing member 32 can be used to fix the temperature measuring element 31 to the tube body 20 and facilitate the positioning and installation of the temperature measuring element 31.

[0044] As shown in Figure 4, in this embodiment, the heating element 10 may include a heating portion 11, a first conductive portion 12, and a second conductive portion 13. In some embodiments, the heating portion 11 is disposed within the tube body 20 and is at least partially spaced apart from the tube wall of the tube body 20. When powered, it can radiate infrared light, which can pass through the tube body 20 and reach the aerosol-generating substrate. Specifically, in some embodiments, the heating portion 11 may not be in contact with the tube wall of the tube body 20 as a whole. In some embodiments, only the top end of the heating portion 11 is in contact with the tube wall of the tube body 20. In some embodiments, the heating portion 11 is generally cylindrical or tubular, and may be generally in the shape of a spiral column, and may be formed by winding at least one infrared-radiating heating element 110. The first conductive portion 12 and the second conductive portion 13 are spaced apart and are both connected to one end of the heating portion 11. They can be extended from one end of the tube body 20 for conductive connection to a power supply assembly (not shown).

[0045] In this embodiment, the heating element 110 can be arranged in a longitudinal direction and can have a roughly circular cross-section. Of course, it is understood that in other embodiments, the cross-section of the heating element 110 is not limited to a circular shape and can be square or other shapes. In this embodiment, the heating element 110 can include a heating substrate and a heat radiating layer disposed on the heating substrate. The heating substrate can generate heat when energized. The heating substrate can be a heating wire or a heating plate. Specifically, it can be a metal wire. Metal materials such as nickel-chromium alloy (such as nickel-chromium alloy wire) or iron-chromium-aluminum alloy (such as iron-chromium-aluminum alloy wire) can be selected, which have good high-temperature oxidation resistance, high stability, and resistance to deformation. The heat radiating layer can be an infrared layer. The infrared layer can be formed on the heating substrate through a high-temperature heat treatment and can radiate infrared light after heating. The substrate forming the infrared layer can be silicon carbide, spinel, or a composite substrate thereof. It is understood that in other embodiments, the heat radiating layer is not limited to an infrared layer. In other embodiments, the heat radiating layer can be a composite infrared layer. In some embodiments, the heating element 110 may further include an anti-oxidation layer formed between the heating base and the heat radiation layer. In this embodiment, the heating base undergoes high-temperature heat treatment and forms a dense oxide film on its surface, which can form an anti-oxidation layer.

[0046] As shown in Figures 1 to 3, in this embodiment, the tube body 20 can be a quartz glass tube. Of course, it is understood that in other embodiments, the tube body 20 is not limited to an infrared-transmitting quartz tube, and can be other window materials that allow light waves to pass through, such as transparent ceramics, diamond, etc.

[0047] In the present embodiment, the tube body 20 includes a columnar body 20a and a pointed top 20b. The columnar body 20a can be cylindrical and hollow. It is understandable that in some other embodiments, the columnar body 20a is not limited to being cylindrical, and can be a rectangular parallelepiped or other shapes. The pointed top 20b is arranged at one end of the columnar body 20a. By setting the pointed top 20b, it is convenient for at least part of the heating structure 1 to be plugged in and out of the aerosol generating matrix. The pointed top 20b can be a cone. In some embodiments, a cavity 21 is formed on the inside of the tube body 20. The cavity 21 is a columnar cavity and can be non-sealed. When the heating element 10 is installed therein, the cavity 21 does not need to be vacuumed or filled with inert gas. In the present embodiment, the tube body 20 has a nozzle 22. The nozzle 22 is arranged at one end of the columnar body 20a away from the pointed top 20b and is connected to the cavity 21 for the heating element 10 to be loaded into the cavity 21.

[0048] In this embodiment, the temperature measuring component 30 can be partially loaded into the cavity 21 from the pipe mouth 22, and can be tightly fitted with the inner wall of the columnar body 20a. Specifically, it can be fixed to the inner wall of the tube body 20 by setting an adhesive. In some embodiments, it can be interference fit with the columnar body 20a.

[0049] As shown in Figures 5 to 8, in this embodiment, the fixing member 32 can be cylindrical. The fixing member 32 can include a first end portion 32a and a second end portion 32b. When the fixing member 32 is assembled with the tube body 20, the first end portion 32a can be inserted into the cavity 21 through the tube opening 22 and can be located at the end of the heat generating portion 11 of the heating element 10 that is disposed toward the tube opening 22.

[0050] In this embodiment, the temperature measuring element 31 may be a thermocouple, which may extend at least partially from the first end 32a to the second end 32b. In some embodiments, the temperature measuring element 31 may include a temperature measuring portion 311, a first electrical connection portion 312, and a second electrical connection portion 313. The temperature measuring portion 311 is at least partially disposed at the first end 32a. Specifically, in some embodiments, the temperature measuring portion 311 is exposed to the first end 32a, and when the temperature measuring assembly 30 is assembled with the tube body 20, the temperature measuring portion 311 may be placed in the tube body 20 and located between the heating portion 11 and the nozzle 22. The temperature measuring portion 311 is roughly cylindrical or spherical. The first electrical connection portion 312 and the second electrical connection portion 313 are connected to the temperature measuring portion 311 and are spaced apart. Specifically, the first electrical connection portion 312 and the second electrical connection portion 313 are connected to the side of the temperature measuring portion 311 away from the heating portion 11. Both the first electrical connection portion 312 and the second electrical connection portion 313 extend from the first end 32a of the fixture 32 to the second end 32b of the fixture 32 and can be used to connect to a power supply assembly (not shown). In some embodiments, both the first electrical connection portion 312 and the second electrical connection portion 313 can be wire leads. Of course, it is understood that in other embodiments, the first electrical connection portion 312 and the second electrical connection portion 313 are not limited to wire cores and can be conductive pins.

[0051] In this embodiment, a first insulating structure 314 may be provided on a partial section of the first electrical connection part 312. The length of the first insulating structure 314 is less than the length of the first electrical connection part 312. After being wrapped around the first electrical connection part 312, one end of the first insulating structure 314 is at a set distance from the temperature measuring part 311. That is, the partial section of the first electrical connection part 312 adjacent to the temperature measuring part 311 may be exposed. In some other embodiments, the outer wall of the first electrical connection part 312 may be entirely wrapped by the first insulating structure 314. In some embodiments, the first insulating structure 314 may be an insulating skin, such as a rubber skin. By providing the first insulating structure 314, the first electrical connection part 312 and the second electrical connection part 313 can be easily insulated.

[0052] In this embodiment, a second insulating structure 315 may be provided on a partial section of the second electrical connection part 313. The length of the second insulating structure 315 is less than the length of the second electrical connection part 313. After being wrapped around the second electrical connection part 313, one end of the second insulating structure 315 is at a set distance from the temperature measuring part 311. That is, the partial section of the second electrical connection part 313 adjacent to the temperature measuring part 311 may be exposed. In some other embodiments, the outer wall of the second electrical connection part 313 may be entirely wrapped by the second insulating structure 315. In some embodiments, the second insulating structure 315 may be an insulating skin, such as a rubber skin. By providing the second insulating structure 315, the first electrical connection part 312 and the second electrical connection part 313 can be easily insulated.

[0053] In this embodiment, the temperature measuring element 31 may further include a third insulating structure 316, which may be sleeved on at least a portion of the first electrical connection portion 312 and the second electrical connection portion 313. Specifically, the third insulating structure 316 may wrap the first electrical connection portion 312 and the second electrical connection portion 313 together. The third insulating structure 316 may be provided on the periphery of the first insulating structure 314 and the second insulating structure 315. When the temperature measuring element 31 is assembled with the fixing member 32, the temperature measuring element 31 may be tightly fitted with the fixing member 32 through the third insulating structure 316. The temperature measuring element 31 is prevented from moving axially and radially in the fixing member 32, and the position of the temperature measuring element 31 is kept consistent before and after use, thereby enabling accurate temperature detection. In some embodiments, the third insulating structure 316 may be an insulating skin, such as a rubber skin.

[0054] In this embodiment, the entire fixing member 32 can be an insulating member, specifically, ceramic. Of course, it is understood that in other embodiments, the fixing member 32 is not limited to ceramic and can be made of other high-temperature resistant insulating materials. The cross-section of the fixing member 32 is roughly the same as the cross-section of the tube body 20. The cross-section of the fixing member 32 can be roughly circular.

[0055] In this embodiment, the fixing member 32 is provided with a positioning structure 321. Specifically, the positioning structure 321 is disposed at the first end 32a of the fixing member 32 and may partially protrude beyond the first end 32a. This structure serves to position and install the temperature measuring element 31, preventing the temperature measuring element 31 from being pulled or displaced during assembly. The positioning structure 321 may be an insulating member, and may be made of ceramic. In other embodiments, other high-temperature-resistant insulating materials may also be used. The temperature measuring portion 311 may be located on the positioning structure 321, and the first electrical connection portion 312 and the second electrical connection portion 313 may be located on opposite sides of the positioning structure 321 and separated by the positioning structure 321. The positioning structure 321 supports the temperature measuring element 31 on the fixing member 32, preventing the temperature measuring element 31 from moving toward the second end 32b under external tension. In some embodiments, the positioning structure 321 and the fixing member 32 are integrally formed. Specifically, the two may be integrally formed by injection molding. Of course, it is understandable that in some other embodiments, the two may also be separate structures, and may be connected and fixed by plug-in fit or interference fit.

[0056] In this embodiment, the positioning structure 321 may include a first positioning portion 321a and a second positioning portion 321b, wherein the first positioning portion 321a and the second positioning portion 321b are both arranged to protrude from the first end 32a, the first positioning portion 321a and the second positioning portion 321b are connected, and the length of the second positioning portion 321b protruding from the first end 32a is greater than the length of the first positioning portion 321a, that is, the two can be arranged in a stepped manner. In this embodiment, the first positioning portion 321a and the second positioning portion 321b can be an integral structure. In other embodiments, the first positioning portion 321a and the second positioning portion 321b can also be split structures, and the two can be detachably connected by providing a connecting structure. In some embodiments, the first positioning portion 321a and the second positioning portion 321b can also be spaced apart.

[0057] In some other embodiments, the positioning structure 321 includes a first positioning portion 321a protruding from the first end 32a, and a positioning step 3212 is formed between the first positioning portion 321a and the first end 32a of the fixing member 32. It is understood that the first end 32a of the fixing member 32 is not limited to the end surface, and can be flush with the end surface of the fixing member 32 or lower than the end surface of the fixing member 32.

[0058] The first positioning portion 321 a can play a role of supporting and positioning, and can also prevent the temperature measuring portion 311 from directly contacting the heating element 10 .

[0059] In this embodiment, a partition portion 3211 is provided on the fixing member 32. Specifically, the partition portion 3211 can be formed by the first positioning portion 321a. The partition portion 3211 at least partially protrudes from the first end 32a of the fixing member 32. Its thickness can be less than the radial dimension of the fixing member 32. It can be located between the first electrical connection portion 312 and the second electrical connection portion 313. It is used to separate the first electrical connection portion 312 and the second electrical connection portion 313, and is used to separate the first electrical connection portion 312 and the second electrical connection portion 313, in particular, to separate the portion of the first electrical connection portion 312 not covered by the first insulating structure 314 and the portion of the second electrical connection portion 313 not covered by the second insulating structure 315, to prevent short circuits. In some embodiments, the length of the partition portion 3211 can be comparable to the length of the portion of the first electrical connection portion 312 not covered by the first insulating structure 314, and the partition portion 3211 can partially extend toward the second end portion 32b.

[0060] In this embodiment, the positioning structure 321 may include a positioning step 3212. The positioning step 3212 may be disposed at the end of the partition portion 3211 away from the first end 32a and may be generally U-shaped or V-shaped. When the temperature measuring element 31 is assembled with the fixing member 32, the temperature measuring portion 311 is at least partially accommodated in the positioning step 3212, allowing positioning thereof. The positioning step 3212 may be located at the end of the first positioning portion 321a and formed by connecting the first positioning portion 321a with the second positioning portion 321b.

[0061] In this embodiment, the fixing member 32 is provided with an isolation structure 3213, which is provided at the first end 32a. The isolation structure 3213 can be a portion of the second positioning portion 321b that is higher than the first positioning portion 321a, and can block between the temperature measuring portion 311 and the heating element 10. The temperature measuring portion 311 is located on a side of the isolation structure 3213 that is opposite to a portion of the heating element 10. Specifically, the temperature measuring portion 311 can be located on a side of the isolation structure 3213 that is opposite to the first conductive portion 12 and the second conductive portion 13. The isolation structure 3213 can be used to isolate the temperature measuring portion 311 from at least a portion of the heating element 10.

[0062] In this embodiment, a guide channel 322 is provided on the fixing member 32. The guide channel 322 can be opened on the side wall of the fixing member 32 and can be a guide groove. The guide channel 322 extends from the first end 32a of the fixing member 32 to the second end 32b. It can be one and can be used for the installation of the first electrical connection part 312 and the second electrical connection part 313, and for the first electrical connection part 312 and the second electrical connection part 313 to be led out. Specifically, the first electrical connection part 312 and the second electrical connection part 313 can be partially installed in the guide channel 322, and the third insulating structure 316 on the periphery of the first and second electrical connection parts 313 can be in close contact with the groove wall of the guide channel 322, so that the temperature measuring element 31 can be tightly fitted with the fixing member 32. In some other embodiments, the guide channel 322 is not limited to one. It can be two and can be provided in a one-to-one correspondence with the first electrical connection part 312 and the second electrical connection part 313.

[0063] In this embodiment, the fixing member 32 may be provided with a channel for the first conductive portion 12 and / or the second conductive portion 13 to pass through. Specifically, the fixing member 32 is provided with a first channel 323. The first channel 323 may be a through hole or a through slot and may extend from the first end 32a to the second end 32b. The first channel 323 is provided corresponding to the first conductive portion 12 of the heating element 10 and can be used to pass through the first conductive portion 12 of the heating element 10. In this embodiment, the fixing member 32 is further provided with a second channel 324, which may be spaced apart from the first channel 323. The second channel 324 may be a through hole or a through slot and may extend from the first end 32a to the second end 32b. The second channel 324 is provided corresponding to the second conductive portion 13 of the heating element 10 and can be used to pass through the second conductive portion 13 of the heating element 10.

[0064] In this embodiment, the heating structure 1 further includes a base 40, which can be used to install and fix the tube body 20. A section of the tube body 20 located at the tube opening 22 is inserted into the base 40, and the temperature measuring component 30 can pass through the base 40.

[0065] In this embodiment, a first connecting structure 50 may be provided between the tube body 20 and the base 40. In some embodiments, the first connecting structure 50 may be a first adhesive structure, through which the tube body 20 may be bonded and fixed to the base 40. In some embodiments, the first adhesive structure may be an adhesive. In some embodiments, the first connecting structure 50 is not limited to an adhesive structure and may be a snap-fit ​​structure or other structure. In some embodiments, the first connecting structure 50 may be omitted, and the tube body 20 may be fixed to the base 40 via an interference fit.

[0066] In this embodiment, a second connecting structure 60 is provided between the temperature measuring assembly 30 and the tube body 20. This second connecting structure 60 secures the temperature measuring assembly 30 to the tube body 20. The second connecting structure 60 may be a second adhesive structure, such as an adhesive. The provision of the second connecting structure 60 further enhances the stability of the installation of the temperature measuring assembly 30. In some embodiments, the second connecting structure 60 is not limited to an adhesive structure and may be a snap-fit ​​structure or other structure. In some embodiments, the second connecting structure 60 may be omitted, and the temperature measuring assembly 30 may be provided with an interference fit on the tube body 20.

[0067] Figures 9 and 10 show a second embodiment of the heating structure of the present invention, which differs from the first embodiment in that the heating element 10 further includes a support body 14, and the support body 14 and the heating part 11 are separate structures. The heating part 11 is in the shape of a spiral column, having a first end 11a and a second end 11b, wherein the first end 11a is arranged toward the pointed top 10b, and the second end 11b is arranged opposite to the first end 11a. The two ends of the support body 14 pass through the first end 11a and the second end 11b of the heating part 11. The support body 14 is connected to the first end 11a of the heating part 11, and can be fixed to the heating part 11 by welding, and is electrically connected to the heating part 11. One end of the support body 14 passing through the second end 11b can be connected to the second conductive part 13.

[0068] The second channel 324 on the fixing member 32 can be located at the central axis of the fixing member 32. The cross-sectional dimension of the second conductive portion 13 can be smaller than the cross-sectional dimension of the second channel 324. For example, when the cross section of the second conductive portion 13 is circular, its radial dimension can be smaller than the radial dimension of the second channel 324. The cross-sectional dimension of the support body 14 can be greater than or equal to the cross-sectional dimension of the second channel 324. For example, when the cross section of the support body 14 is circular, its radial dimension can be greater than the radial dimension of the second channel 324. The support body 14 can be mounted at the channel opening of the second channel 324 at the first end 32a. Specifically, the connection between the support body 14 and the second conductive portion 13 can be located at the channel opening of the second channel 324 at the first end 32a, thereby achieving the positioning and installation between the entire heating element 10 and the fixing member 32. The support body 14 can be connected to the second conductive portion 13 by welding. In some other embodiments, the heating element 10 can also be connected and fixed to the fixing member 32 by providing other connection structures. For example, the first conductive part 12 can be interference fit with the first channel 323, or the second conductive part 13 can be interference fit with the second channel 324.

[0069] It is understandable that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A heating structure, characterized in that: It comprises a heating element (10), an infrared light-transmitting tube (20), a fixing member (32) and a temperature measuring element (31): The tube body (20) is sleeved on at least a portion of the outer periphery of the heating element (10) and has a tube opening (22) for the heating element (10) to be installed; The heating element (10) has a heating portion (11) disposed in the tube body (20), and at least a portion of the heating portion (11) is spaced apart from the inner wall of the tube body (20); The fixing member (32) is at least partially installed in the tube body (20) and comprises a first end (32a) and a second end (32b) arranged opposite to each other, wherein the first end (32a) is arranged toward the heating portion (11); a positioning structure (321) for positioning and installing the temperature measuring element (31) is provided on the first end (32a); The temperature measuring element (31) at least partially extends from the first end (32a) to the second end (32b), and the temperature measuring element (31) has a temperature measuring portion (311); the temperature measuring portion (311) is at least partially arranged on the positioning structure (321).

2. The heating structure according to claim 1, characterized in that: The positioning structure (321) comprises a positioning step (3212) provided at the first end (32a); The temperature measuring portion (311) is at least partially disposed in the positioning step (3212).

3. The heating structure according to claim 2, characterized in that: The positioning structure (321) comprises a first positioning portion (321a) and a second positioning portion (321b) protruding from the first end (32a). The length of the second positioning portion (321b) protruding from the first end (32a) is greater than the length of the first positioning portion (321a) protruding from the first end (32a), thereby forming the positioning step (3212); Alternatively, the positioning structure (321) comprises a first positioning portion (321a) protruding from the first end (32a), and the positioning step (3212) is formed between the first positioning portion (321a) and the first end (32a) of the fixing member (32).

4. The heating structure according to claim 3, characterized in that: The portion of the second positioning portion (321b) that is higher than the first positioning portion (321a) is blocked between the temperature measuring portion (311) and the heating element (10).

5. The heating structure according to claim 1, characterized in that: The fixing member (32) is provided with an isolation structure (3213) at the first end (32a), and the temperature measuring portion (311) is located on a side of the isolation structure (3213) that is opposite to a portion of the heating element (10), and the temperature measuring portion (311) is isolated from the heating element (10) by the isolation structure (3213).

6. The heating structure according to claim 1, characterized in that: The temperature measuring element (31) further comprises a first electrical connection portion (312) and a second electrical connection portion (313) connected to the temperature measuring portion (311) and at least partially spaced apart; the first electrical connection portion (312) and the second electrical connection portion (313) both extend from the first end (32a) to the second end (32b) and are positioned by the positioning structure (321).

7. The heating structure according to claim 6, characterized in that: A guide channel (322) is provided on the fixing member (32), and the guide channel (322) extends from the first end (32a) to the second end (32b); the first electrical connection portion (312) and the second electrical connection portion (313) are at least partially installed in the guide channel (322).

8. The heating structure according to claim 6, characterized in that: A partition portion (3211) is provided on the fixing member (32), the partition portion (3211) at least partially protruding from the first end (32a) and being provided between the first electrical connection portion (312) and the second electrical connection portion (313).

9. The heating structure according to claim 6, characterized in that: A first insulating structure (314) is provided on at least a portion of the first electrical connection portion (312); And / or, a second insulating structure (315) is provided on at least a portion of the second electrical connection portion (313); And / or, the temperature measuring element (31) includes a third insulating structure (316), the third insulating structure (316) is sleeved on at least a portion of the first electrical connection portion (312) and the second electrical connection portion (313), and is tightly fitted with the fixing member (32); And / or, the fixing member (32) and / or the positioning structure (321) are insulating members.

10. The heating structure according to claim 1, characterized in that: The heating element comprises a first conductive portion (12) and a second conductive portion (13) connected to the heating portion (11), wherein the first conductive portion (12) and the second conductive portion (13) extend toward the pipe opening (22); The fixing member (32) is provided with a channel for the first conductive part (12) and / or the second conductive part (13) to pass through.

11. The heating structure according to any one of claims 1 to 10, characterized in that: The fixing member (32) is tightly fitted with the tube body (20); And / or, the fixing member (32) is tightly fitted with at least a portion of the temperature measuring element (31); And / or, the temperature measuring portion (311) is tightly fitted with the tube body (20).

12. An aerosol generating device, characterized in that: It comprises the heating structure (1) according to any one of claims 1 to 11, and a power supply component connected to the heating structure (1).

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