Aerosol generating device and heating structure

Abstract

The utility model relates to an aerosol generating device and a heating structure, and the heating structure comprises a heating element which is provided with a heating part; the infrared light transmitting tube body is sleeved on the periphery of the heating part; at least part of the supporting piece is installed in the pipe body, the supporting piece is used for supporting the heating element, and the supporting piece is arranged in the axial direction of the pipe body; the soaking piece is arranged on the supporting piece; and the temperature measuring element is at least partially installed in the pipe body and is provided with a temperature measuring part, the temperature measuring part is arranged in the pipe body, and at least part of the temperature measuring part is in contact with the soaking piece. According to the heating structure, the soaking piece is arranged on the supporting piece, the temperature measuring part of the temperature measuring element is arranged in the pipe body and at least partially makes contact with the soaking piece, and the soaking piece is rapidly heated and evenly reflects the surrounding temperature, so that the temperature measuring response speed is increased, the local temperature measuring error is reduced, and the temperature measuring accuracy and authenticity are improved.

Description

Technical Field

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

[0002] In the aerosol generating device of the related art, the heating structure usually includes a tube body, a heating element arranged in the tube body, and a temperature measuring element. The temperature measuring element is usually a thermocouple. The thermocouple is installed in the tube body and fits against the inner wall of the tube body. For the tube wall of the tube body, since the thermocouple is only in contact with the local tube wall, that is, it can only reflect the temperature of a local point, so the real temperature feedback of the entire temperature field needs to be improved. Utility Model Content

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

[0004] The technical solution adopted by the utility model to solve the technical problem is: construct a heating structure, including:

[0005] A heating element having a heating portion;

[0006] An infrared light-transmitting tube body is sleeved on the outer periphery of the heating part;

[0007] A support member, at least partially installed in the tube body, for supporting the heating element, wherein the support member is arranged along the axial direction of the tube body;

[0008] A heat-sparging member, disposed on the support member;

[0009] The temperature measuring element is at least partially installed in the tube body and has a temperature measuring portion. The temperature measuring portion is arranged in the tube body and at least partially contacts with the heat equalizing element.

[0010] In some embodiments, the thermal conductivity of the heat spreader is greater than the thermal conductivity of the tube wall of the tube body.

[0011] In some embodiments, the heat spreader extends along the circumference of the support member and is coated on the support member in the circumference of the support member.

[0012] In some embodiments, the heat spreader is a closed annular structure or a non-closed annular structure.

[0013] In some embodiments, the heat equalizer is in contact with the inner wall of the tube body.

[0014] In some embodiments, a gap is left between the heat-sparing member and at least a portion of the inner wall of the tube body;

[0015] The width of the gap is greater than 0 and less than or equal to 3 mm.

[0016] In some embodiments, the heat-spreading member has a first surface facing the supporting member; the temperature measuring portion is in contact with the first surface;

[0017] A mounting groove for mounting the temperature measuring part is provided on the side wall of the supporting member.

[0018] In some embodiments, the support member has a first end and a second end in the axial direction, the first end is disposed close to the heat generating portion, and the second end is disposed away from the heat generating portion;

[0019] The distance from the heat equalizing element to the first end is less than or equal to the distance from the heat equalizing element to the second end.

[0020] In some embodiments, the heat equalizing member has a second surface facing the inner wall of the tube body; and the temperature measuring portion is in contact with the second surface.

[0021] The utility model also constructs an aerosol generating device, which comprises the heating structure of the utility model and a power supply component connected with the heating structure.

[0022] The implementation of the aerosol generating device and heating structure of the utility model has the following beneficial effects: the heating structure arranges a heat equalizing member on the support member, and arranges the temperature measuring part of the temperature measuring element in the tube body and at least partially contacts with the heat equalizing member, so that the temperature can be quickly heated up and / or uniformly reacted to the surrounding temperature through the heat equalizing member, thereby increasing the temperature measurement response speed, reducing the error of local temperature measurement, and improving the temperature measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0024] Figure 1 is a schematic diagram of the heating structure of the aerosol generating device in some embodiments of the utility model;

[0025] Figure 2 yes Figure 1 A cross-sectional view of the heat generating structure shown;

[0026] Figure 3 yes Figure 2 A schematic diagram of the structural decomposition of the heat generating structure shown;

[0027] Figure 4 yes Figure 3 The schematic diagram of the support structure shown;

[0028] Figure 5 yes Figure 3 The diagram of the cooperation between the heat spreader and the temperature measuring element shown;

[0029] Figure 6 yes Figure 5 An enlarged schematic diagram of the local structure of the heat spreader and the temperature measuring element is shown. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in specific directions, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0032] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0033] Figure 1The first embodiment of the aerosol generating device of the utility model is shown. The aerosol generating device can heat the aerosol generating matrix by heating without burning. In some embodiments, the aerosol generating matrix can be columnar, and can be a solid material in the form of strips, sheets, particles or one-piece molding made of leaves and / or stems of plants (such as tobacco), and aroma components can be further added to the solid material. The aerosol generating device may include a heating structure 1 and a power supply component (not shown). The heating structure 1 can be at least partially inserted into the aerosol generating matrix to heat the aerosol generating matrix by radiating infrared light, so that the aerosol generating matrix generates an aerosol for the user to inhale. The power supply component (not shown) is connected to the heating structure 1 to supply power to the heating structure 1.

[0034] like Figures 1 to 3 As shown, in some embodiments, the heating structure 1 may include a tube body 10, a heating element 20, a support 30, and a temperature measuring element 40. The tube body 10 allows infrared light to pass through. The heating element 20 is at least partially disposed in the tube body 10, and after heating, it can radiate infrared light. The infrared light passes through the tube body 10 and heats the aerosol generating matrix. In some embodiments, in the power-on working state, the heating element 20 can be heated to a maximum of about 1000°C, and the atomization temperature of the aerosol generating matrix is ​​controlled within 350°C, so that the aerosol generating matrix can be precisely atomized mainly in the infrared light 2-4.75um band and 8-11μm band. The tube body 10 is covered on at least part of the heating element 20, and the tube wall of the tube body 10 allows infrared light to pass into the aerosol generating matrix. The support 30 can be at least partially installed in the tube body 10, can be assembled with the heating element 20, and can support the heating element 20. The temperature measuring element 40 is at least partially installed in the tube body 10 and disposed on the support member 30 , and can monitor the temperature in the tube body 10 .

[0035] In some embodiments, the tube body 10 may be a quartz glass tube. Of course, it is understandable that in other embodiments, the tube body 10 is not limited to an infrared-transmitting quartz tube, and may be other window materials that can allow light waves to pass through, such as transparent ceramics, diamond, etc.

[0036] In some embodiments, the tube body 10 can be covered on the periphery of part of the heating element 20 to form a heating structure to prevent the heating element 20 from directly contacting the aerosol generating matrix. The tube body 10 is spaced apart from at least part of the heating element 20, and the tube body 10 includes a main body 11 and a pointed top 12. The main body 11 can be cylindrical and hollow. It can be understood that in some other embodiments, the main body 11 is not limited to being cylindrical, and can be a rectangular parallelepiped or other shapes. The pointed top 12 is arranged at one end of the main body 11. By setting the pointed top 12, it is convenient to plug and unplug at least part of the heating structure 1 in the aerosol generating matrix, and the pointed top 12 can be a cone. In some embodiments, a cavity 13 is formed inside the tube body 10, and the cavity 13 is a cylindrical cavity and can be non-sealed. When the heating element 20 is installed therein, the cavity 13 does not need to be evacuated or filled with an inert gas. In this embodiment, the tube body 10 has a tube opening 14 , which is disposed at one end of the main body 11 away from the pointed top 12 and communicates with the cavity 13 , so as to allow the heating element 20 to be installed in the cavity 13 .

[0037] In some embodiments, the heating element 20 may include a heating portion 21. The heating portion 21 is disposed in the tube body 10 and is at least partially spaced apart from the tube wall of the tube body 10. Specifically, the heating portion 21 as a whole may be spaced apart from the tube wall of the main body 11, and may radiate infrared light when powered on, and the infrared light may pass through the tube body 10 to the aerosol generating matrix. In some embodiments, the heating portion 21 is roughly columnar or cylindrical, and may be roughly spiral columnar, and may be formed by winding at least one heating element 211 that can radiate infrared light. A central rod 212 is disposed in the heating portion 21, and the central rod 212 is coaxially disposed with the heating portion 21, and may pass through both ends of the heating portion 21 and be connected to one end of the heating portion 21 that faces the pointed end 12. In some embodiments, the central rod 212 may be a conductor or a resistive heating element. The center rod 212 and the heating part 21 can be made of the same material and can be integrally formed or have a separate structure. When the center rod 212 and the heating part 21 have a separate structure, the center rod 212 and the heating part 21 are welded and electrically connected at one end close to the pointed top 12 .

[0038] The heating element 20 may include a first electrical connection portion 22 and a second electrical connection portion 23. The first electrical connection portion 22 and the second electrical connection portion 23 are both arranged at one end of the heating portion 21 away from the pointed portion 12, and may be arranged through the nozzle 14. The first electrical connection portion 22 may be connected to the center rod 212, and the second electrical connection portion 23 may be connected to one end of the heating portion 21 away from the pointed portion 12. The first electrical connection portion 22 and the second electrical connection portion 23 may be conductive wires, conductive columns, etc. The first electrical connection portion 22 may be connected to the center rod 212 by welding, and the second electrical connection portion 23 may be connected to one end of the heating element 211 by welding.

[0039] The heating element 211 can be arranged in a longitudinal direction, and the cross section can be roughly circular. Of course, it can be understood that in some other embodiments, the cross section of the heating element 211 is not limited to being circular, and can be square or other shapes. In this embodiment, the heating element 211 may include a heating substrate and a heat radiation layer arranged on the heating substrate. The heating substrate can generate heat when powered on. The heating substrate can be a heating wire or a heating sheet. Specifically, it can be a metal wire, which can select nickel-chromium alloy (such as nickel-chromium alloy wire), iron-chromium-aluminum alloy (such as iron-chromium-aluminum alloy wire) and other metal materials with good high-temperature oxidation resistance, high stability, and not easy to deform. The heat radiation layer can be an infrared layer. The infrared layer can be formed on the heating substrate under high-temperature heat treatment, and can radiate infrared light after heating, wherein the infrared layer forming substrate can be silicon carbide, spinel or its composite substrate. It can be understood that in some other embodiments, the heat radiation layer is not limited to an infrared layer. In some other embodiments, the heat radiation layer can be a composite infrared layer. In some embodiments, the heating element 211 may further include an anti-oxidation layer formed between the heating substrate and the heat radiation layer. In this embodiment, the heating substrate undergoes high-temperature heat treatment and forms a dense oxide film on its surface, which can form an anti-oxidation layer.

[0040] like Figures 2 to 4 As shown, in some embodiments, the support member 30 may be columnar, and the support member 30 may be at least partially installed from the pipe mouth 14 to the pipe body 10, and it may support and fix the heating element 20. In some embodiments, the support member 30 may be arranged near the pipe mouth 14, and may be arranged in sequence with the heating portion 21 along the axial direction of the pipe body 10. In some embodiments, the support member 30 is an insulating member as a whole, which may be used to insulate the first electrical connection portion 22 and the second electrical connection portion 23. The support member 30 may be ceramic, quartz, or high temperature resistant plastic. The cross section of the support member 30 is generally circular, and its outer diameter may be equivalent to the inner diameter of the pipe body 10. In some embodiments, the support member 30 has a first end 30a and a second end 30b. The first end 30a and the second end 30b are arranged opposite to each other and are located in the axial direction of the support member 30. The first end 30a may be arranged near the heating portion 21, and the second end 30b may be arranged away from the heating portion 21, and may be located outside the pipe body 10.

[0041] In some embodiments, a first channel 31 may be provided on the support member 30, and the first channel 31 may penetrate from the first end 30a of the support member 30 to the second end 30b of the support member 30 along the axial direction of the support member 30. The first channel 31 may be defined by a central through hole provided on the support member 30. The first channel 31 may be used for the first electrical connection portion 22 to pass through. In some embodiments, the first channel 31 may be omitted. The first channel 31 may be used to fix the first electrical connection portion 22 to the support member 30 by dispensing glue (adhesive) to prevent the heating element 20 from shifting during assembly.

[0042] In some embodiments, a second channel 32 may be provided on the support member 30, and the second channel 32 may extend from the first end 30a of the support member 30 to the second end 30b of the support member 30 along the axial direction of the support member 30, and may be radially spaced apart from the first channel 31, and the second channel 32 may be used for the second electrical connection portion 23 to pass through. The second channel 32 may be defined by a through groove provided on the side wall of the support member 30. The second channel 32 may be fixed to the second electrical connection portion 23 and the support member 30 by dispensing glue (adhesive) to prevent the heating element 20 from shifting during assembly.

[0043] In some embodiments, a mounting groove 33 is provided on the support member 30, and the mounting groove 33 can be spaced apart from the first channel 31 in the radial direction and arranged opposite to the second channel 32, and the mounting groove 33 can extend from the first end 30a to the second end 30b of the support member 30. The mounting groove 33 can be used for limiting the installation of the temperature measuring element 40. Of course, it can be understood that in some other embodiments, the mounting groove 33 can also be omitted.

[0044] In some embodiments, a partition portion 34 is provided on the support member 30, the partition portion 34 is protruding from the end surface of the first end 30a and located at one end of the mounting groove 33, and is used to separate the temperature measuring element 40 from the heating portion 21. In some embodiments, the partition portion 34 can be omitted.

[0045] In some embodiments, a section of the support member 30 near the first end 30a is provided with a limiting groove 35, which can extend along the circumference of the support member 30 and can be used for installation and positioning of the heat spreader 50. In some embodiments, the limiting groove 35 can be omitted.

[0046] like Figure 2 , Figure 5 ,and Figure 6As shown, in some embodiments, the temperature measuring element 40 is at least partially installed in the mounting groove 33, which can be a thermocouple. In other embodiments, the temperature measuring element 40 is not limited to being installed on the support member 30, and can be installed in the gap between the support member 30 and the pipe body 10. The temperature measuring element 40 includes a temperature measuring portion 41 and two conductive portions 42. The temperature measuring portion 41 can be a temperature measuring probe, which is arranged in the pipe body 10, specifically installed in the mounting groove 33 and arranged near the first end 30a. The temperature measuring portion 41 can be used to monitor the temperature in the pipe body 10. The two conductive portions 42 are respectively connected to the temperature measuring portion 41, which can extend along the mounting groove 33 to the pipe mouth 14. The two conductive portions 42 can be insulated. In some embodiments, the temperature measuring element 40 also includes an insulating portion 43, which is wrapped around a portion of the two conductive portions 42. In some embodiments, the insulating portion 43 can be an insulating material, such as plastic. In other embodiments, the insulating portion 43 can be omitted.

[0047] In some embodiments, the heating structure 1 also includes a heat equalizer 50, which can be arranged on the support member 30. In some embodiments, the distance from the heat equalizer 50 to the first end 30a is less than or equal to the distance from the heat equalizer 50 to the second end 30b, that is, it can be close to or at least partially arranged at the first end 30a. Specifically, it can be installed in the limiting groove 35. The heat equalizer 50 can be in the form of a thin sheet, and in some other embodiments, it can also be directly wrapped around the outer wall of the support member 30. The thermal conductivity of the heat equalizer 50 is greater than the thermal conductivity of the tube body 10, and it can heat up quickly, so that the temperature measurement response speed is increased, and it can also equalize the surrounding temperature and reduce the error of local point temperature measurement. In some embodiments, the heat equalizer 50 can be a non-closed annular structure, such as a C-type. In some other embodiments, the heat equalizer 50 can also be a closed annular structure, such as a circular ring.

[0048] In some embodiments, the heat spreader 50 may contact the inner wall of the tube body 10, specifically, the heat spreader 50 may contact the inner wall of the tube body 10 that is arranged opposite to the heat spreader 50. In some other embodiments, the heat spreader 50 may also leave a gap with at least part of the inner wall of the tube body 10, and the width of the gap may be greater than 0 and less than or equal to 3 mm.

[0049] In some embodiments, the temperature measuring portion 41 may be in contact with the heat equalizer 50, and then the temperature in the tube body 10 may be monitored by measuring the temperature on the heat equalizer 50, so that the data obtained by the temperature measurement is more real and not limited to the local temperature. In some embodiments, the heat equalizer 50 has a first surface 51 disposed toward the support member 30, and the temperature measuring portion 41 is in contact with the first surface 51. In some other embodiments, the temperature measuring portion 41 may be disposed between the tube body 10 and the heat equalizer 50, and the heat equalizer 50 has a second surface 52 facing the inner wall of the tube body 10, and the temperature measuring portion 41 may be in contact with the second surface 52. In some embodiments, the temperature measuring portion 41 may be fixedly disposed with the heat equalizer 50 by welding or bonding.

[0050] In some embodiments, the heating structure 1 also includes a fixed flange 60, which is sleeved on one end of the tube body 10 having a pipe mouth 14, and is sleeved on a section of the support member 30 that passes through the tube body 10, which can support the tube body 10 and the support member 30. A limiting step 61 is provided on the inner side of the fixed flange 60, and one end of the tube body 10 having a pipe mouth 14 can be against the limiting step 61, and the tube body 10 and the fixed flange 60 can be bonded and fixed by a first adhesive member 70. The first adhesive member 60 can be a paste-like adhesive, which can play a role in fixing and sealing. The gap between the support member 30 and the inner wall of the fixed flange 60 is less than or equal to 0.2 mm. In some embodiments, the support member 30 and the fixed flange 60 can be bonded and fixed by setting a second adhesive member 80. The second adhesive member 80 can be a paste-like adhesive, which can play a role in fixing and sealing.

[0051] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. A heating structure, characterized in that: include: A heating element (20) having a heating portion (21); An infrared light-transmissive tube (10) is sleeved on the outer periphery of the heating portion (21); a support member (30) at least partially installed in the tube body (10) and used to support the heating element (20), wherein the support member (30) is arranged along the axial direction of the tube body (10); A heat-dissipating member (50) is disposed on the support member (30); The temperature measuring element (40) is at least partially installed in the tube body (10) and has a temperature measuring portion (41). The temperature measuring portion (41) is arranged in the tube body (10) and at least partially contacts the heat equalizing element (50).

2. The heating structure according to claim 1, characterized in that: The thermal conductivity of the heat equalizing member (50) is greater than the thermal conductivity of the tube wall of the tube body (10).

3. The heating structure according to claim 1, characterized in that: The heat equalizing member (50) extends along the circumference of the support member (30) and is coated on the support member (30) in the circumference of the support member (30).

4. The heating structure according to claim 3, characterized in that: The heat equalizing element (50) is a closed annular structure or a non-closed annular structure.

5. The heating structure according to claim 1, characterized in that: The heat equalizing member (50) is in contact with the inner wall of the tube body (10).

6. The heating structure according to claim 1, characterized in that: A gap is left between the heat equalizing member (50) and at least a portion of the inner wall of the tube body (10); The width of the gap is greater than 0 and less than or equal to 3 mm.

7. The heating structure according to claim 1, characterized in that: The heat-dissipating member (50) has a first surface (51) facing the supporting member (30); the temperature measuring portion (41) is in contact with the first surface (51); A mounting groove (33) for mounting the temperature measuring part (41) is provided on the side wall of the support member (30).

8. The heating structure according to claim 1, characterized in that: The support member (30) has a first end (30a) and a second end (30b) in the axial direction, the first end (30a) is arranged close to the heat generating portion (21), and the second end (30b) is arranged away from the heat generating portion (21); The distance from the heat equalizing element (50) to the first end (30a) is less than or equal to the distance from the heat equalizing element (50) to the second end (30b).

9. The heating structure according to claim 1, characterized in that: The heat equalizing element (50) has a second surface (52) facing the inner wall of the tube body (10); the temperature measuring portion (41) is in contact with the second surface (52).

10. An aerosol generating device, characterized in that: It comprises the heating structure (1) according to any one of claims 1 to 9, and a power supply component connected to the heating structure (1).

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