A heating device and aerosol-generating system

Abstract

The utility model belongs to aerosol atomization technical field especially relates to a heating device and aerosol generating system. Heating device includes: the bearing base body, presents the hollow structure and is supplied aerosol generating product to insert, the bearing base body includes the heating section and first heat preservation section, and the heating section and first heat preservation section are connected along the length direction of bearing base body, and the heating section and first heat preservation section all wrap aerosol generating product, and heating element, heating element is arranged in the heating section, and the connecting place of heating section and first heat preservation section is equipped with the isolation groove, and the isolation groove is used for hindering the heat transfer of heating section to first heat preservation section. The utility model can avoid the dry burning of aerosol generating product in the beginning stage of use, and improve the utilization rate of medium in the use process.

Description

Technical Field

[0001] This utility model belongs to the field of aerosol atomization technology, and particularly relates to a heating device and an aerosol generation system. Background Technology

[0002] Currently, aerosol generating devices are electronic products that use heating rather than combustion to release aerosols from aerosol-generating products. The key component of such devices is the heating element, which precisely controls the temperature to heat the aerosol-generating product to a temperature sufficient to release aerosols but below the range where combustion would occur.

[0003] In existing aerosol generating products, the length of the heating element used to heat the solid medium needs to be adapted to the length of the solid medium being heated. Typically, the length of the heating element is 1 to 2 mm longer than the length of the solid medium.

[0004] However, during the suction process, the solid medium is atomized into an aerosol. After the aerosol leaves the coverage area of ​​the heating element, it is easy to condense and flow back in the air passage of the functional section due to the decrease in temperature. This reduces the effective utilization rate of the solid medium, and the condensate flowing back into the device also brings cleaning difficulties. Utility Model Content

[0005] The purpose of this application is to provide a heating device that addresses the issues of improving the utilization rate of the medium and the ease of use.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A heating device is provided for heating aerosol-generating products, the heating device comprising:

[0008] A hollow support substrate is provided for the insertion of the aerosol-generating product. The support substrate includes a heating section and a first insulating section, which are connected along the length of the support substrate. Both the heating section and the first insulating section enclose the aerosol-generating product.

[0009] A heating element, wherein the heating element is arranged in the heating section;

[0010] An isolation groove is provided at the connection between the heating section and the first insulation section. The isolation groove is used to prevent the heat from the heating section from being transferred to the first insulation section.

[0011] In some embodiments, the isolation groove is a blind groove structure, or the isolation groove completely penetrates the supporting substrate.

[0012] In some embodiments, the first insulation section is made of a material with a predetermined thermal conductivity, the predetermined thermal conductivity being in the range of 5 to 429 W / (m*K).

[0013] In some embodiments, the temperature range of the heating element near the first heat preservation section is 200 to 350 degrees Celsius.

[0014] In some embodiments, the width of the isolation groove ranges from 0.1 to 10 mm.

[0015] In some embodiments, multiple isolation grooves are arranged, and each isolation groove is arranged at intervals along the circumference of the supporting substrate.

[0016] In some embodiments, each of the isolation grooves is located in the same radial plane of the support substrate, and a heat-conducting portion is provided between any two adjacent isolation grooves along the circumference of the support substrate, wherein the ratio of the length of the heat-conducting portion to the length of the isolation groove is in the range of 0.5 to 0.7.

[0017] In some embodiments, the aerosol generating article includes a medium segment located in the heating section and a functional segment connecting the medium segment, the functional segment being at least partially located in the first insulation section, along the direction in which the aerosol generating article is inserted into the support substrate, and the ratio of the length of the first insulation section to the length of the functional segment is in the range of 3:10 to 9:10.

[0018] In a second aspect, an aerosol generation system is provided, comprising an aerosol generation product and the heating device, wherein the aerosol generation product further comprises a plug section, and the supporting substrate further comprises a second insulation section connecting the heating section, wherein the plug section and the functional section are respectively located at both ends of the medium section, the heating section is located between the first insulation section and the second insulation section, and the second insulation section partially encloses the plug section.

[0019] In some embodiments, the aerosol generation system further includes a housing, the heating device is located within the housing, and the aerosol-generated article is at least partially located within the housing.

[0020] The beneficial effects of this application are as follows: by setting an isolation groove at the connection between the heating section and the first insulation section, the isolation groove can prevent the transfer of heat from the heating section to the first insulation section, thereby reducing the temperature rise rate of the heating device at the beginning of use and avoiding dry burning. During use, the first insulation section can retain the heat of the functional section, preventing the functional section temperature from being too low, achieving precise control of the functional section temperature, reducing the condensation and backflow of medium aerosol in the functional section, improving the utilization rate of the medium, and improving the convenience of use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the aerosol generation system provided in the embodiments of this application;

[0023] Figure 2 yes Figure 1 A schematic diagram of the heating device and the aerosol-generated product assembly of the aerosol generation system.

[0024] Figure 3 yes Figure 2 A cross-sectional schematic diagram of the aerosol-generating product and the heating device;

[0025] Figure 4 yes Figure 3 A magnified view of a portion at point A;

[0026] Figure 5 yes Figure 2 An explosion diagram of the aerosol-generating product and the heating device;

[0027] Figure 6 This is a temperature simulation diagram of the average temperature of the functional segment under different coverage ratios provided in another embodiment of this application.

[0028] The following are the labeling elements in the figure:

[0029] 100. Aerosol generation system; 101. Shell; 10. Aerosol generation product; 11. Functional section; 12. Medium section; 13. Plug section; 20. Heating device; 21. Supporting substrate; 211. First insulation section; 212. Heating section; 213. Second insulation section; 22. Heating element; 221. Electrode; 222. Lead wire; 214. Heat-conducting part; 215. Isolation groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of this application.

[0031] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0032] Please see Figures 1 to 3 This application provides a heating device 20 and an aerosol generation system 100 having the same. The heating device is used to heat the aerosol generation article 10 to generate aerosol.

[0033] The aerosol generating article 10 includes a medium section 12 and a functional section 11 located at one end of the medium section 12. The medium section 12 is used to generate aerosols, and the functional section 11 is used to at least reduce the temperature of the aerosols. The cooling effect of the functional section 11 prevents burns when users inhale the aerosols. It is understood that the functional section 11 may also have functions including, but not limited to, adjusting the flavor of the aerosols, filtering aerosol components, and adjusting the airflow.

[0034] Please see Figures 2 to 4 The heating device 20 includes a support base 21 and a heating element 22. The support base 21 has a hollow structure and is used to insert the aerosol generating product 10. The support base 21 includes a heating section 212 and a first heat-insulating section 211, both of which are hollow. The heating section 212 and the first heat-insulating section 211 are connected along the length of the support base 21. The aerosol generating product 10 can be inserted into the support base 21 through the opening of the first heat-insulating section 211, so that the heating section 212 encloses the medium section 12, and the first heat-insulating section 211 at least partially encloses the functional section 11. The heating element 22 is arranged in the heating section 212 and is used to heat the medium section 12. The heating element 22 conducts heat to the heating section 212, and the heating section 212 then transfers heat to the medium section 12. The medium section 12 is heated to generate aerosol, and at the same time, heat is also conducted to the first heat-insulating section 211.

[0035] An isolation groove 215 is provided at the connection between the heating section 212 and the first insulation section 211. The isolation groove 215 is used to prevent heat transfer from the heating section 212 to the first insulation section 211. It can be understood that the isolation groove 215 at least thins the connection between the heating section 212 and the first insulation section 211, reducing the thickness of the connection, thereby reducing the efficiency of heat conduction from the heating section 212 to the first insulation section 211. This allows the heating device 20 to delay the temperature rise of the functional section 11 in the initial stage of use, and the temperature of the functional section 11 to rise gradually and slowly, avoiding dry burning and maintaining a reasonably low temperature. Moreover, during use, since the first insulation section 211 at least partially encloses the functional section 11, heat loss from the functional section 11 can be prevented, keeping the temperature of the functional section 11 within a reasonable range and reducing the condensation of aerosols in the functional section 11.

[0036] Please see Figures 2 to 4 The heating device 20 provided in this application embodiment has an isolation groove 215 set at the connection between the heating section 212 and the first heat preservation section 211. The isolation groove 215 can prevent the transfer of heat from the heating section 212 to the first heat preservation section 211, thereby reducing the temperature rise rate of the heating device 20 at the beginning of use and avoiding dry burning. During use, the first heat preservation section 211 can retain the heat of the functional section 11, prevent the temperature of the functional section 11 from being too low, achieve precise temperature control of the functional section 11, reduce the condensation and backflow of the medium aerosol in the functional section 11, improve the utilization rate of the medium, and improve the convenience of use.

[0037] Please see Figures 2 to 4 It is understandable that avoiding dry burning of functional segment 11 can prevent the premature release of key substances such as aroma and moisture, ensuring consistent taste. An isolation groove 215 is opened on the supporting substrate 21. The isolation groove 215 has a simple structure and is highly manufacturable. It does not require additional parts and will not significantly increase the manufacturing cost of the heating device 20.

[0038] Please see Figures 2 to 4 It is understandable that the material of the supporting substrate 21 has a certain structural strength to reduce the probability of deformation of the aerosol-generated product 10 due to airflow pressure during use.

[0039] It is understandable that the heating section 212 and the first insulation section 211 can be made of the same material. For example, the heating section 212 and the first insulation section 211 can both be made of metal, such as copper.

[0040] Optionally, the heating section 212 and the first insulation section 211 can be made of the same material, such as metal, copper.

[0041] Optionally, the materials of the heating section 212 and the first insulation section 211 can also be different. For example, the heating section 212 can be made of metal, while the material of the first insulation section 211 can be glass or ceramic.

[0042] Optionally, the heating section 212 and the first heat-insulating section 211 can be integrally formed, or the heating section 212 and the first heat-insulating section 211 can be processed separately and then connected as two sections.

[0043] It is understandable that the aerosol generating article 10 is generally cylindrical in shape, and its cross-sectional shape can be circular, elliptical, or polygonal. The overall shape of the supporting substrate 21 is also cylindrical, and its shape is adapted to the shape of the aerosol generating article 10.

[0044] Please see Figures 2 to 4 In some embodiments, the isolation groove 215 has a blind groove structure, meaning that the isolation groove 215 does not completely penetrate both sides of the supporting substrate 21. It is understood that the larger the proportion of space occupied by the isolation groove 215 in the pipe sidewall of the supporting substrate 21, the better its thermal insulation performance. However, if the proportion is too high, it may weaken the structural strength of the supporting substrate 21. In practical use, the number and size of the isolation groove 215 can be reasonably determined by considering factors such as the material properties and wall thickness of the supporting substrate 21, in order to achieve a balance between thermal insulation effect and structural stability.

[0045] Please see Figures 2 to 4 In some embodiments, the isolation groove 215 completely penetrates the supporting substrate 21.

[0046] Optionally, the isolation groove 215 has a through groove structure, which can block heat conduction to the greatest extent and maximize the heat insulation effect.

[0047] Please see Figures 2 to 4 In some embodiments, the first insulation section 211 is made of a material with a predetermined thermal conductivity, the predetermined thermal conductivity being in the range of 5 to 429 W / (m*K), for example, the predetermined thermal conductivity can be 5 W / (m*K), 10 W / (m*K), 16.3 W / (m*K), 50 W / (m*K), 100 W / (m*K), 200 W / (m*K), 310 W / (m*K) or 429 W / (m*K).

[0048] Optionally, temperature control of functional section 11 can be achieved by using a material with a predetermined thermal conductivity to make the first insulation section 211.

[0049] Optionally, when the material of the first insulation section 211 is an inorganic material, such as ceramic or glass, its thermal conductivity is ≥5W / (m*K). It can be understood that the higher the thermal conductivity, the better the temperature rise and insulation effect of the functional section 11.

[0050] When the material of the first insulation section 211 is a metal, such as 316L stainless steel, its thermal conductivity is 16.3 W / (m*K). If the material of the first insulation section 211 is replaced with metallic silver, its thermal conductivity is 429 W / (m*K). According to the heat conduction formula:

[0051] Q = ΔT * k * Ac / L

[0052] Where ΔT is the temperature difference (K);

[0053] k is the thermal conductivity (W / m·K);

[0054] L is the heat conduction distance (m);

[0055] Ac is the cross-sectional area (m²) of the heat-transferring object. 2 );

[0056] Therefore, the heat passing through a given cross section per unit time will increase by 25 to 26 times, and the temperature increase effect of the first insulation section 211 and the functional section 11 will be significantly increased.

[0057] Please see Figures 2 to 4 In some embodiments, the ratio of the length of the first insulation section 211 to the length of the functional section 11 along a predetermined direction ranges from 3:10 to 9:10.

[0058] Please see Figure 5 It is understood that the predetermined direction is the length direction of the supporting substrate 21, and the predetermined direction can also be the axial direction of the functional segment 11 or the medium segment 12. The first insulation segment 211 covers the side surface of the functional segment 11 circumferentially. The ratio of the length of the first insulation segment 211 to the length of the functional segment 11 can also be understood as the coverage ratio of the first insulation segment 211 to the functional segment 11. The larger the coverage ratio, the better the temperature improvement effect on the functional segment 11. The coverage ratio can be 3:10, 32:100, 37:100, or 9:10. There is no limitation here, and it can be selected according to the actual situation.

[0059] For example, numerical simulations were performed on the dimensions within the medium segment 12 and functional segment 11 during the first suction. Under the same heating strategy, please refer to [link to relevant documentation]. Figure 6 In section a, with a coverage ratio of 0.3, the average temperature of functional segment 11 is only 75℃; please refer to [link / reference]. Figure 6 In case b, when the coverage ratio is 0.6, Figure 6 Compared to the color of b Figure 6The color of section a should be dark, and the average temperature of functional section 11 is about 120℃, which is greater than the average temperature when the coverage ratio is 0.3. Therefore, the larger the coverage ratio, the better the temperature increase effect of functional section 11, which can reduce aerosol condensation and improve the utilization rate of the medium.

[0060] Please see Figures 2 to 4 In some embodiments, the temperature range of the heating element 22 near the first insulation section 211 is 200–350 degrees Celsius. The higher the temperature of the heating element 22 at this location, the better the temperature increase effect on the functional section 11. It is understood that the temperature of the heating element 22 adjacent to the first insulation section 211 can be 200°C, 203°C, 215°C, 229°C, 237°C, 248°C, 261°C, 278°C, 293°C, 317°C, 344°C, or 350°C. There is no limitation here, and it can be selected according to the actual situation.

[0061] Numerical simulations were performed on the internal dimensions of the medium section 12 and the functional section 11 during the first suction (not shown in the figure). Under the same coverage ratio (0.6), when the temperature of the heating element 22 near the first insulation section 211 is 250°C, the average temperature of the functional section 11 is about 110°C; while when the temperature of the heating element 22 near the first insulation section 211 is 275°C, the average temperature of the functional section 11 is 120°C, with a temperature increase of about 9%.

[0062] Please see Figures 2 to 4 In some embodiments, multiple isolation grooves 215 are arranged, and each isolation groove 215 is arranged at intervals along the circumference of the supporting substrate 21.

[0063] Optionally, the temperature of the functional section 11 can be flexibly controlled by multiple isolation grooves 215 arranged at intervals along the circumference of the supporting substrate 21. The multiple isolation grooves 215 can balance the heat transfer efficiency and the structural strength of the supporting substrate 21, reduce the condensation of aerosols in the air passages of the functional section 11, improve the utilization rate of the medium, and improve the performance of the heating device 20.

[0064] Please see Figures 2 to 4In some embodiments, each of the isolation grooves 215 is located on the same radial plane of the supporting substrate 21, and a heat-conducting portion 214 is provided between any two adjacent isolation grooves 215 along the circumference of the supporting substrate 21. The ratio of the length of the heat-conducting portion 214 to the length of the isolation groove 215 ranges from 0.5 to 0.7. This ratio can control the temperature distribution of the functional segment 11. The larger the ratio, the smaller the temperature increase effect on the functional segment 11; the smaller the ratio, the greater the temperature increase effect on the functional segment 11. The ratio is controlled within a reasonable range to achieve the best temperature control effect. For example, 0.5, 0.51, 0.53, 0.55, 0.56, 0.58, 0.61, 0.63, 0.65, 0.68, 0.69, or 0.7. There is no limitation here, and the appropriate value can be selected according to the actual situation.

[0065] Optionally, by controlling the length ratio of the heat-conducting part 214 to the isolation groove 215 to be between 0.5 and 0.7, and by combining the setting of multiple circumferential isolation grooves 215, the functional section 11 can be effectively controlled, reducing aerosol condensation and improving the utilization rate of the medium.

[0066] It is understandable that when the cross-sectional shape of the supporting substrate 21 is circular, the extension path of the isolation groove 215 is an arc, and the length of the isolation groove 215 is the arc length of the isolation groove 215 along the circumference of the supporting substrate 21.

[0067] Please see Figures 2 to 4 In some embodiments, the width of the isolation groove 215 ranges from 0.1 to 10 mm, such as 0.1 mm, 0.27 mm, 0.95 mm, 1.48 mm, 2.36 mm, 3.21 mm, 4.44 mm, 5.09 mm, 6.73 mm, 8.12 mm, 9.68 mm, or 10 mm.

[0068] Optionally, by controlling the width of the isolation tank 215 within a reasonable range, the thermal isolation effect can be enhanced. The smaller the tank width, the greater the effect on the temperature rise of the functional section 11; the larger the tank width, the smaller the effect on the temperature rise of the functional section 11. By controlling the width of the isolation tank 215 within the range of 0.1 to 0.5 mm, a reasonable temperature control effect can be achieved, thereby reducing the condensation and backflow of aerosols, improving the utilization rate of the medium, and avoiding the problem of difficult cleaning.

[0069] It is understood that, in this embodiment of the application, the temperature range of functional segment 11 can be 60-250℃ through the above method. Preferably, the temperature range of functional segment 11 can be 120-170℃. For example, 120℃, 122℃, 127℃, 131℃, 136℃, 139℃, 143℃, 148℃, 152℃, 161℃, 169℃, or 170℃. There is no limitation here, and the temperature can be selected according to the actual situation.

[0070] This utility model also proposes an aerosol generation system 100, which includes a heating device 20. The specific structure of the heating device 20 is as described in the above embodiments. Since this aerosol generation system 100 adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0071] Please see Figures 4 to 5 In some embodiments, the aerosol generating article 10 further includes a plug section 13, and the supporting substrate 21 further includes a second insulation section 213 connecting the heating section 212. The plug section 13 and the functional section 11 are respectively located at both ends of the medium section 12. The heating section 212 is located between the first insulation section 211 and the second insulation section 213, and the second insulation section 213 partially encloses the plug section 13. It is understood that the plug section 13 is used to absorb the returned condensate.

[0072] Optionally, the structure and material of the second insulation section 213 can be the same as those of the first insulation section 211. The second insulation section 213 can also effectively control the temperature of the plug section 13, keeping the temperature of the plug section 13 within a reasonable range.

[0073] Please see Figures 1 to 3 In some embodiments, the aerosol generation system 100 further includes a housing 101, the heating device 20 is located within the housing 101, and the aerosol generation article 10 is at least partially located within the housing 101.

[0074] Optionally, the heating element 22 can be a heating film made of a flexible heating material, which is attached to the outer surface of the heating section 212. A protective layer can also be provided on the outer side of the heating film, such as a protective layer formed by glazing with glass glaze or ceramic coating. This protective layer can reduce the corrosion of the heating film by oxygen and impurities, and extend the service life of the heating element 22.

[0075] Please see Figures 2 to 4 It is understandable that the heating film is also provided with electrodes 221, which are electrically connected to the power supply through leads 222.

[0076] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A heating device for heating aerosol-generated products, characterized in that, The heating device includes: A hollow support substrate is provided for the insertion of the aerosol-generating product. The support substrate includes a heating section and a first insulating section, which are connected along the length of the support substrate. Both the heating section and the first insulating section enclose the aerosol-generating product. A heating element, wherein the heating element is arranged in the heating section; An isolation groove is provided at the connection between the heating section and the first insulation section. The isolation groove is used to prevent the heat from the heating section from being transferred to the first insulation section.

2. The heating device as described in claim 1, characterized in that: The isolation groove is a blind groove structure, or the isolation groove completely penetrates the supporting substrate.

3. The heating device as described in claim 1, characterized in that: The first insulation section is made of a material with a predetermined thermal conductivity, which ranges from 5 to 429 W / (m*K).

4. The heating device as described in claim 1, characterized in that: The temperature range of the heating element near the first insulation section is 200 to 350 degrees Celsius.

5. The heating device as described in claim 1, characterized in that: The width of the isolation groove ranges from 0.1 to 10 mm.

6. The heating device according to any one of claims 1-5, characterized in that: Multiple isolation grooves are arranged, and each isolation groove is arranged at intervals along the circumference of the supporting substrate.

7. The heating device as described in claim 6, characterized in that: Each of the isolation grooves is located in the same radial plane of the supporting substrate, and a heat-conducting part is provided between any two adjacent isolation grooves along the circumference of the supporting substrate. The ratio of the length of the heat-conducting part to the length of the isolation groove is in the range of 0.5 to 0.

7.

8. The heating device as described in any one of claims 1-5, characterized in that: The aerosol generating article includes a medium section located in the heating section and a functional section connecting the medium section. The functional section is at least partially located in the first heat-insulating section. Along the direction in which the aerosol generating article is inserted into the carrier substrate, the ratio of the length of the first heat-insulating section to the length of the functional section is in the range of 3:10 to 9:

10.

9. An aerosol generation system, characterized in that: The invention includes an aerosol generating product and a heating device as described in claim 8. The aerosol generating product further includes a plug section, and the supporting substrate further includes a second insulation section connecting the heating section. The plug section and the functional section are located at opposite ends of the medium section, and the heating section is located between the first insulation section and the second insulation section. The second insulation section partially encloses the plug section.

10. The aerosol generation system as described in claim 9, characterized in that, The aerosol generation system further includes a housing, the heating device is located inside the housing, and the aerosol-generated article is at least partially located inside the housing.

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