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 arranged on the periphery of the heating part in a sleeving manner, and the infrared light transmitting tube body and at least part of the heating part are arranged at intervals; 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; and the temperature measuring element comprises a temperature measuring film, and the temperature measuring film is arranged on the supporting piece. According to the heating structure, the temperature measuring film is arranged on the supporting piece, so that the temperature in the pipe body can be monitored, the heating temperature is fed back more truly and timely, and the sensitivity and accuracy of temperature measurement 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 and a heating element arranged in the tube body. The heating element is spaced apart from the inner wall of the tube body, and the heating element is generally a heating wire. In order to obtain a good inhalation experience, heating temperature control is very important. Now, a temperature measuring element is generally set on the tube wall of the tube body, but this temperature measurement method has certain limitations. 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] The infrared light-transmissive tube is sleeved on the outer periphery of the heating portion and is spaced apart from at least a portion of the heating portion;

[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] The temperature measuring element comprises a temperature measuring film, and the temperature measuring film is arranged on the supporting member.

[0009] In some embodiments, the temperature measuring film is coated on a portion of the outer wall of the support member along the circumference of the support member;

[0010] The support member has a first end and a second end in the axial direction, the first end is arranged close to the heating part, and the second end is arranged away from the heating part; the distance from the temperature measuring film to the first end is less than or equal to the distance from the temperature measuring film to the second end.

[0011] In some embodiments, the first end has an end surface, and the temperature measuring film covers at least a portion of the end surface.

[0012] In some embodiments, the temperature measuring film is in contact with at least a portion of the inner wall of the tube body.

[0013] In some embodiments, a gap is left between the temperature measuring film and the inner wall of the tube body;

[0014] The width of the gap is greater than 0 and less than or equal to 0.3 mm.

[0015] In some embodiments, the temperature measuring element further includes two conductive units connected to the temperature measuring film; each of the conductive units is at least partially disposed on the support member and extends along the axial direction of the support member.

[0016] In some embodiments, each of the conductive units includes a first conductive portion and a second conductive portion; the first conductive portion is disposed on the support member, and one end of the first conductive portion is connected to the temperature measuring film; the second conductive portion is connected to the first conductive portion and extends to the outside of the tube body;

[0017] The first conductive part includes a conductive sheet, a conductive film or a conductive coating;

[0018] The second conductive part includes a conductive wire or a conductive column.

[0019] In some embodiments, the support member is an insulating member;

[0020] The heating element comprises a first electrical connection portion and a second electrical connection portion connected to the heating portion;

[0021] The support member is provided with a first channel for the first electrical connection portion to pass through and / or a second channel for the second electrical connection portion to pass through.

[0022] In some embodiments, the temperature measuring film comprises a TCR temperature measuring film; or,

[0023] The heating structure further includes a heat spreader, which is coated on the support member, and the temperature measuring film is arranged on the heat spreader, and the thermal conductivity of the heat spreader is greater than the thermal conductivity of the support member.

[0024] 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.

[0025] The implementation of the aerosol generating device and heating structure of the utility model has the following beneficial effects: the heating structure is more conducive to directly monitoring the temperature inside the tube body by arranging a temperature measuring film on the support member, providing more realistic and timely feedback on the heating temperature, and improving the sensitivity and accuracy of temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0027] Figure 1 It is a schematic diagram of the heating structure of the aerosol generating device in the first embodiment of the utility model;

[0028] Figure 2 yes Figure 1 A cross-sectional view of the heat generating structure shown;

[0029] Figure 3 yes Figure 2 A schematic diagram of the structural decomposition of the heat generating structure shown;

[0030] Figure 4 yes Figure 3 A diagram showing the cooperation between the support member and the temperature measuring element;

[0031] Figure 5 yes Figure 4 The schematic diagram of the temperature measuring element structure shown;

[0032] Figure 6 It is a schematic diagram of the cooperation between the support member, the heat-dissipating member and the temperature measuring element of the aerosol generating device in the second embodiment of the utility model;

[0033] Figure 7 Schematic diagram of the structure of the heat equalizing element shown. DETAILED DESCRIPTION

[0034] 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", "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.

[0035] 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.

[0036] 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.

[0037] Figure 1 The 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, strips, particles, porous 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.

[0038] 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 can radiate infrared light after heating. The infrared light passes through the tube body 10 and heats the aerosol generating matrix. In some embodiments, when the power is on, 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 .

[0039] 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.

[0040] 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 1 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 .

[0041] 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 separated. When the center rod 212 and the heating part 21 are separated, the center rod 212 and the heating part 21 are welded and electrically connected at one end close to the tip 12. The center rod 212 can also be an insulating structure.

[0042] 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.

[0043] 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.

[0044] In some embodiments, the support member 30 may be columnar, and the support member 30 may be at least partially installed in the tube body 10 from the tube mouth 14, and it may support and fix the heating element 20. In some embodiments, the support member 30 may be arranged near the tube mouth 14, and may be arranged in sequence with the heating portion 21 along the axial direction of the tube 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 tube 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 tube body 10.

[0045] 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.

[0046] In some embodiments, a second channel 32 may be provided on the support member 30. The second channel 32 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 second channel 32 may be spaced apart from the first channel 31 in the radial direction. 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 support member 30 by dispensing glue (adhesive) to prevent the heating element 20 from shifting during assembly.

[0047] like Figure 4 and Figure 5 As shown, in some embodiments, the temperature measuring element 40 may include a temperature measuring film 41. The temperature measuring film 41 may be a TCR temperature measuring film. It should be noted that TCR refers to temperature coefficient resistance, and the TCR temperature measuring film may be a material with a large temperature coefficient resistance. The temperature measuring film 41 is disposed on the support member 30, and the distance from the first end 30a is less than or equal to the distance from the second end 30b. It can be used to monitor the temperature in the tube body 10 and improve the sensitivity and accuracy of temperature measurement. Specifically, the temperature measuring film 41 may be coated on part of the outer wall of the support member 30 along the circumference of the support member 30. Specifically, in some embodiments, it may be formed on the support member 30 by processes such as PVD or printing. In some embodiments, the first end 30a of the support member 30 has an end face, and the temperature measuring film 41 may extend to at least part of the end face of the first end 30a, that is, the end face of the first end 30a may be covered by the temperature measuring film 41. The temperature measuring film 41 may be in contact with a portion of the inner wall of the tube body 10, that is, the outer periphery of the temperature measuring film 41 may be in contact with the inner wall of the tube body 10 opposite thereto. In some other embodiments, a gap may be left between the temperature measuring film 41 and at least a portion 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 0.3 mm.

[0048] The temperature measuring element 40 may include two conductive units 42, which are spaced apart in the circumferential direction of the temperature measuring film 41 and are both connected to the temperature measuring film 41. Each conductive unit 42 may be at least partially disposed on the support 30 and extend along the axial direction of the support 30. The two conductive units 42 may be insulated by the support 30. In some embodiments, each conductive unit may include a first conductive portion 421 and a second conductive portion 422, and the first conductive portion 421 and the second conductive portion 422 may be two conductive members of different materials. The first conductive portion 421 may be disposed on the surface of the support 30, and one end may be connected to the temperature measuring film 41, and the other end may extend to the second end 30b of the support 30. In some embodiments, the first conductive portion 421 may be a conductive sheet or conductive film coated on the support 30, such as a copper sheet, copper foil, etc.; or a conductive coating coated on the outer wall of the support 30, such as a conductive metal coating. The second conductive part 422 can be connected to the first conductive part 421 and can be columnar, extending from the tube mouth 14 to the outside of the tube body 10. The second conductive part 422 can be a conductive wire or a conductive column. In some other embodiments, the first conductive part 421 or the second conductive part 422 of the conductive unit 42 can also be omitted, that is, the conductive unit 42 can be a single conductive member.

[0049] In some embodiments, the heating structure 1 also includes a fixed flange 50, 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 51 is provided on the inner side of the fixed flange 50, and one end of the tube body 10 having a pipe mouth 14 can be against the limiting step 51, and the tube body 10 and the fixed flange 50 can be bonded and fixed by a first adhesive member 60. 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 50 is less than or equal to 0.2 mm. In some embodiments, the support member 30 and the fixed flange 50 can be bonded and fixed by setting a second adhesive member 70. The second adhesive member 70 can be a paste-like adhesive, which can play a role in fixing and sealing.

[0050] Figure 6 and Figure 7The second embodiment of the utility model is shown, which differs from the first embodiment in that the heating structure 1 may also include a heat equalizer 80, which is made of a high thermal conductivity material, and the thermal conductivity of the heat equalizer 80 is greater than the thermal conductivity of the support member 30. The heat equalizer 80 can be coated on the support member 30, specifically arranged at the first end of the support member 30, and the temperature measuring film 41 can be arranged on the inner wall or outer wall of the heat equalizer 80, and the surface area of ​​the heat equalizer 80 is greater than the area of ​​the temperature measuring film 41; the heat equalizer 80 can be a thin sheet ring, or a C-shaped thin sheet. The heat equalizer 80 heats up quickly and evenly distributes the surrounding temperature, thereby increasing the corresponding speed and reducing the error of local point temperature measurement. In some other embodiments, the heat equalizer 80 can be omitted.

[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); The infrared light-transmissive tube (10) is sleeved on the outer periphery of the heating portion (21) and is spaced apart from at least a portion 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); The temperature measuring element (40) comprises a temperature measuring film (41), wherein the temperature measuring film (41) is arranged on the support member (30).

2. The heating structure according to claim 1, characterized in that: The temperature measuring film (41) covers a portion of the outer wall of the support member (30) along the circumferential direction of the support member (30); 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 temperature measuring film (41) to the first end (30a) is less than or equal to the distance from the temperature measuring film (41) to the second end (30b).

3. The heating structure according to claim 2, characterized in that: The first end (30a) has an end surface, and the temperature measuring film (41) covers at least a portion of the end surface.

4. The heating structure according to claim 1, characterized in that: The temperature measuring film (41) contacts at least a portion of the inner wall of the tube body (10).

5. The heating structure according to claim 1, characterized in that: A gap is provided between the temperature measuring film (41) and the inner wall of the tube body (10); The width of the gap is greater than 0 and less than or equal to 0.3 mm.

6. The heating structure according to any one of claims 1 to 5, characterized in that: The temperature measuring element (40) further comprises two conductive units (42) connected to the temperature measuring film (41); each of the conductive units (42) is at least partially disposed on the support member (30) and extends along the axial direction of the support member (30).

7. The heating structure according to claim 6, characterized in that: Each of the conductive units (42) comprises a first conductive part (421) and a second conductive part (422); the first conductive part (421) is arranged on the support member (30), and one end of the first conductive part is connected to the temperature measuring film (41); the second conductive part (422) is connected to the first conductive part (421) and extends to the outside of the tube body (10); The first conductive part (421) comprises a conductive sheet, a conductive film or a conductive coating; The second conductive part (422) includes a conductive wire or a conductive column.

8. The heating structure according to any one of claims 1 to 5, characterized in that: The support member (30) is an insulating member; The heating element (20) comprises a first electrical connection portion (22) and a second electrical connection portion (23) connected to the heating portion (21); The support member (30) is provided with a first channel (31) for the first electrical connection portion (22) to pass through and / or a second channel (32) for the second electrical connection portion (23) to pass through.

9. The heating structure according to claim 1, characterized in that: The temperature measuring film (41) comprises a TCR temperature measuring film (41); or, The heating structure further comprises a heat-scaling member (80), wherein the heat-scaling member (80) is coated on the support member (30), the temperature measuring film (41) is arranged on the heat-scaling member (80), and the thermal conductivity of the heat-scaling member (80) is greater than the thermal conductivity of the support member (30).

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).

Images