Heating assembly and aerosol generating device

Abstract

The utility model relates to the technical field of aerosol generation, in particular to a heating assembly and an aerosol generation device. The heating assembly comprises an infrared transmission piece and a heating piece. A containing cavity and heat exchange channels are arranged in the infrared transmission part, the heat exchange channels are arranged on the outer side of the containing cavity at intervals, and the containing cavity is used for containing an aerosol substrate; the heating piece is arranged on the infrared transmission piece and on the outer side of the heat exchange channel, and the heating piece is used for generating heat so as to heat gas in the heat exchange channel into hot air flow used for heating the aerosol matrix in the containing cavity; the infrared transmission piece is configured to enable infrared radiation generated by the heating body to heat the aerosol matrix in the containing cavity. Due to the fact that the heating piece of the heating assembly not only can heat the hot air flow entering the aerosol matrix, but also can directly conduct radiation heating on the aerosol matrix through infrared rays, the heating efficiency and the energy utilization rate of the heating piece are improved.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, specifically to a heating component and an aerosol generation device. Background Technology

[0002] An aerosol generating device is a device capable of heating an atomized aerosol matrix to generate aerosols. Typically, an aerosol generating device has a heating chamber, into which the aerosol matrix is ​​inserted to heat it. The heating method of the heating chamber can be, for example, hot gas heating. Hot gas heating involves heating the gas stream into a hot gas stream before it enters the aerosol matrix, thus heating the aerosol matrix.

[0003] However, since the heating element only heats the hot airflow, the heating efficiency and energy utilization rate of the heating element for heating the hot airflow are relatively low. Utility Model Content

[0004] This application provides a heating component and an aerosol generating device that can solve the problem of low energy utilization of heating elements.

[0005] To address the aforementioned technical problems, this application provides a heating assembly applied to an aerosol generating device. The heating assembly includes an infrared transmitting element and a heating element. The infrared transmitting element has a receiving cavity and a heat exchange channel, with the heat exchange channel spaced apart on the outside of the receiving cavity, which is used to contain the aerosol matrix. The heating element is disposed on the infrared transmitting element and on the outside of the heat exchange channel. The heating element generates heat to heat the gas in the heat exchange channel into a hot gas flow for heating the aerosol matrix in the receiving cavity. The infrared transmitting element is configured to allow infrared radiation generated by the heating element to heat the aerosol matrix in the receiving cavity.

[0006] In one embodiment, the infrared transmitting element is a tubular structure with an annular sidewall, the inner side of which encloses a receiving cavity; a heat exchange channel is disposed between the outer side of the annular sidewall and the inner side of the annular sidewall; and a heating element is disposed on the outer side of the annular sidewall.

[0007] In one embodiment, the heat exchange channel extends through both ends of the annular sidewall in the axial direction, and / or the heat exchange channel has a porous structure.

[0008] In one embodiment, the heat exchange channel extends axially from one end of the annular sidewall to the other end, and there are multiple heat exchange channels arranged at intervals along the circumference of the annular sidewall.

[0009] In one embodiment, the infrared transmissive element has a transmittance of infrared light greater than or equal to 80%.

[0010] In one embodiment, the infrared transmissive element is configured as a glass-ceramic infrared transmissive element.

[0011] In one embodiment, the inner diameter of the receiving cavity is larger than the outer diameter of the aerosol matrix, so that when the aerosol matrix is ​​contained in the receiving cavity, the outer wall of the aerosol matrix and the inner wall of the receiving cavity are spaced apart.

[0012] In one embodiment, the heating assembly further includes a support and a base, which abut against the two ends of the infrared transmissive element along the axial direction, respectively. The base has a receiving cavity, the bottom wall of which is used to support the aerosol matrix. The heat exchange channel is connected to the outside atmosphere at one end near the support and to the receiving cavity at the other end near the base, allowing gas in the receiving cavity to flow into the aerosol matrix.

[0013] In one embodiment, the heating assembly further includes a seal and an airflow sensor. At least a portion of the seal is located on the side of the base away from the infrared transmitter. The seal and the base cooperate to form a sensing cavity. The bottom wall of the receiving cavity has an air hole that connects the sensing cavity and the receiving cavity. At least a portion of the cavity wall of the sensing cavity is an elastic film. A receiving cavity is provided on the side of the elastic film away from the sensing cavity. The airflow sensor is located in the receiving cavity. The deformation of the elastic film can change the volume of the receiving cavity. The airflow sensor is used to sense changes in air pressure within the receiving cavity.

[0014] To address the aforementioned technical problems, this application provides an aerosol generating device, which includes the heating component mentioned in any of the above claims.

[0015] The heating assembly of this application includes an infrared transmitting element and a heating element. The infrared transmitting element has a receiving cavity and heat exchange channels, with the heat exchange channels spaced apart on the outside of the receiving cavity, which is used to contain an aerosol matrix. The heating element is disposed on the infrared transmitting element and on the outside of the heat exchange channels. The heating element generates heat to heat the gas in the heat exchange channels into a hot airflow for heating the aerosol matrix in the receiving cavity. The infrared transmitting element is configured to radiate infrared radiation generated by the heating element to heat the aerosol matrix in the receiving cavity. Because the heating element of this heating assembly can not only heat the hot airflow entering the aerosol matrix but also directly radiate heat to the aerosol matrix through infrared radiation, compared to structures that only heat the hot airflow, the heating assembly of this application improves the heating efficiency and energy utilization rate of the heating element. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of this application;

[0017] Figure 2 This is a cross-sectional view of an aerosol generating apparatus provided in an embodiment of this application;

[0018] Figure 3This is a schematic diagram of the structure of a heating assembly provided in one embodiment of this application;

[0019] Figure 4 A cross-sectional view of a heating assembly provided in an embodiment of this application;

[0020] Figure 5 A cross-sectional view of a heating assembly provided in another embodiment of this application;

[0021] Figure 6 An exploded view of a heating assembly provided in an embodiment of this application.

[0022] Reference numerals: heating component 10, infrared transducer 11, receiving cavity 111, insertion port 1111, heat exchange channel 112, outer side 113, inner side 114, heating element 12, aerosol matrix 13, bracket 14, assembly cavity 141, base 15, receiving cavity 151, vent 1511, clamping component 16, sealing component 17, receiving cavity 171, airflow sensor 18, sensing cavity 19, elastic film 191, outer shell 20. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0024] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0025] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0026] The terms "parallel" and "perpendicular," etc., are specific to the current technological level, not absolute mathematical definitions. Slight deviations are permissible; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, with the angle between A and B ranging from 0° to 10°. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, with the angle between A and B ranging from 80° to 100°. The directional terms used in the embodiments of this application, such as "upper," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and do not indicate or imply that the device or component 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 the embodiments of this application.

[0027] Please refer to Figure 1 and Figure 2 This application provides an aerosol generating device for heating an aerosol matrix 13 to generate aerosols. The aerosol matrix 13 can be used as a consumable in the aerosol generating device. In one embodiment, the aerosol matrix 13 may include a matrix section, a cooling section, and a filter section. The matrix section is used to contain grass-like matrix, the cooling section is used to cool the aerosols generated in the matrix section, and the filter section can filter the aerosols. A user can draw in the aerosols generated in the matrix section by suctioning the filter section. Of course, in other embodiments, the aerosol matrix 13 may have other structures, not limited to those mentioned above, and this application does not impose any limitations on this.

[0028] The aerosol generating device includes a housing 20 and a heating component 10. For example... Figure 2 As shown, the heating component 10 is installed inside the housing 20 and is used to heat the aerosol matrix 13. Furthermore, the aerosol generating device may also include components such as a battery and a circuit board, which are disposed within the housing 20. The battery supplies power to the heating component 10, and the circuit board controls the heating of the heating component 10.

[0029] like Figure 3 As shown, the heating assembly 10 includes an infrared transmitting element 11 and a heating element 12. The infrared transmitting element 11 has a receiving cavity 111 and heat exchange channels 112. The heat exchange channels 112 are spaced apart on the outer side of the receiving cavity 111; preferably, the heat exchange channels 112 are spaced apart on the outer periphery of the receiving cavity 111.

[0030] The receiving cavity 111 is used to accommodate the matrix segment of the aerosol matrix 13. One axial end of the receiving cavity 111 has a port 1111 for inserting the aerosol matrix 13 into the receiving cavity 111. The end of the receiving cavity 111 away from the port 1111 can be a closed end or an open end. When the end of the receiving cavity 111 away from the port 1111 is a closed end, an air inlet can be provided on the side wall of the receiving cavity 111 away from the port 1111, connecting the end of the receiving cavity 111 away from the port 1111 to the end of the heat exchange channel 112 away from the port 1111. When the end of the receiving cavity 111 away from the port 1111 is an open end, for example… Figure 4 As shown, the infrared transmitter 11 needs to cooperate with other components to guide the gas in the heat exchange channel 112 to the end of the receiving cavity 111 away from the inlet 1111, thereby guiding the gas in the heat exchange channel 112 into the aerosol matrix 13 inside the receiving cavity 111. In summary, the heat exchange channel 112 receives air from the side near the inlet 1111, the airflow passes through the heat exchange channel 112 and flows from the side of the heat exchange channel 112 away from the inlet 1111 into the aerosol matrix 13 inside the receiving cavity 111.

[0031] like Figure 3 As shown, the heating element 12 is disposed on the infrared transmission element 11 and is disposed on the outside of the heat exchange channel 112. The heating element 12 is used to generate heat. Since the heating element 12 is disposed on the outside of the heat exchange channel 112, the heating element 12 can heat the gas in the heat exchange channel 112 into a hot air flow. The hot air flow is used to heat the aerosol matrix 13 in the accommodating cavity 111. By placing the heating element 12 on the outside of the heat exchange channel 112, compared to placing the heating element 12 on the inside of the heat exchange channel 112, the heat exchange area between the heating element 12 and the heat exchange channel 112 can be larger. Moreover, when the heating element 12 is placed on the inside of the heat exchange channel 112, that is, on the cavity wall of the receiving cavity 111, the heating element 12 is likely to come into contact with the outer wall of the aerosol matrix 13, resulting in local high temperature of the aerosol matrix 13, which can easily burn the aerosol matrix 13, causing the aerosol to produce a burnt smell and impurities, bringing a bad experience to the user. Therefore, by placing the heating element 12 on the outside of the heat exchange channel 112, this application can also avoid direct contact with the aerosol matrix 13, thus reducing the problem of burning the aerosol.

[0032] This application does not limit the specific shape, material, size, etc. of the heating element 12, such as Figure 3 As shown, Figure 3 The heating element 12 is in the form of a heating film. In other embodiments, the heating element 12 can also be in the form of a heating mesh, heating sheet, etc., as long as the heating element 12 can generate heat.

[0033] The infrared transmitting element 11 is configured to allow infrared radiation generated by the heating element to pass through, thereby radiating and heating the aerosol matrix 13 within the receiving cavity 111. Specifically, the infrared transmitting element 11 of this application is made of a material with high infrared transmittance; for example, in one embodiment, the infrared transmitting element 11 has an infrared transmittance greater than or equal to 80%. Preferably, the infrared transmitting element 11 has an infrared transmittance of 80%-90%. In one embodiment, the infrared transmitting element 11 is configured as a glass-ceramic infrared transmitting element 11. General ceramics have low infrared transmittance, primarily absorbing and reflecting infrared radiation, while glass-ceramics have high infrared transmittance, allowing the infrared radiation generated by the heating element 12 to pass through the infrared transmitting element 11 and radiate and heat the aerosol matrix 13.

[0034] Since the heating element 12 of the heating assembly 10 can not only heat the hot airflow entering the aerosol matrix 13, but also directly radiate heat to the aerosol matrix 13 through infrared rays, the heating assembly 10 of this application improves the heating efficiency and energy utilization of the heating element 12 compared to a structure that only heats the hot airflow. Compared to circumferential contact heat transfer with the aerosol matrix 13, infrared radiation heating and hot airflow heating provide more uniform heating of the aerosol matrix 13 in the radial direction, resulting in higher heating consistency of the aerosol matrix 13 in the radial direction.

[0035] In one embodiment, such as Figure 3 As shown, the infrared transmitting element 11 has a tubular structure. Preferably, the tubular structure has an annular sidewall with an outer surface 113 and an inner surface 114. Preferably, both the outer surface 113 and the inner surface 114 are cylindrical. The inner surface 114 of the annular sidewall encloses and forms a receiving cavity 111. A heat exchange channel 112 is disposed between the outer surface 113 and the inner surface 114 of the annular sidewall, i.e., the heat exchange channel 112 is disposed on the annular sidewall. The heating element 12 is disposed on the outer surface 113 of the annular sidewall. The heat exchange channel 112 of this structure is relatively simple to form. It only requires opening a heat exchange channel 112 on the annular sidewall of the infrared transmitting element 11 based on the tubular structure, which simplifies the structure of the infrared transmitting element 11 and reduces the complexity of the process and assembly.

[0036] In one embodiment, the heat exchange channel 112 has a perforated structure. By making the heat exchange channel 112 a perforated structure, the structure of the heat exchange channel 112 can be simplified, making airflow smoother and reducing the suction resistance of the user's suction. In addition, the processing technology of the perforated heat exchange channel 112 is also relatively simple, requiring only opening holes in the annular sidewall. Preferably, the perforated structure is linear, and the axial direction of the perforated structure is parallel to the axial direction of the infrared transmitting element 11. Of course, in other embodiments, the perforated structure can also be curved, zigzag, or irregular in shape, etc. This application does not limit the shape of the perforated structure.

[0037] In one embodiment, the heat exchange channel 112 extends through both ends of the annular sidewall in the axial direction. In this embodiment, since the end of the receiving cavity 111 away from the insertion port 1111 is an open end, for example... Figure 4 As shown, the infrared transmission element 11 needs to cooperate with other components to guide the gas in the heat exchange channel 112 to the end of the receiving cavity 111 away from the insertion port 1111, thereby guiding the gas in the heat exchange channel 112 to the interior of the aerosol matrix 13 in the receiving cavity 111. Therefore, the heat exchange channel 112 needs to penetrate both ends of the annular sidewall in the axial direction.

[0038] In one embodiment, the heat exchange channel 112 extends from one end of the annular sidewall to the other end in the axial direction. There are multiple heat exchange channels 112, which are arranged at intervals along the circumference of the annular sidewall. Thus, air intake and hot air flow heating can be carried out in various directions in the circumference, thereby improving the heating efficiency of the heating element 12.

[0039] In one embodiment, such as Figure 4 As shown, the inner diameter of the receiving cavity 111 is larger than the outer diameter of the aerosol matrix 13, so that when the aerosol matrix 13 is housed in the receiving cavity 111, the outer wall of the aerosol matrix 13 is spaced apart from the inner wall of the receiving cavity 111. By spaced apart from the inner wall of the receiving cavity 111, heat transfer to the aerosol matrix 13 through thermal contact can be prevented, improving the heating efficiency of hot airflow and infrared radiation. Furthermore, since the aerosol matrix 13 does not contact the side wall of the receiving cavity 111, the problem of the aerosol matrix 13 burning can be reduced.

[0040] In one embodiment, such as Figure 4-6As shown, the heating assembly 10 also includes a bracket 14 and a base 15, which abut against both ends of the infrared transmitting element 11 in the axial direction. Specifically, in one embodiment, the bracket 14 has an assembly cavity 141 with openings at both ends in the axial direction. At least a portion of the base 15 is located within the assembly cavity 141 and is connected to one end of the bracket 14 in the axial direction. The infrared transmitting element 11 is disposed within the assembly cavity 141, with one end of the infrared transmitting element 11 abutting against the bracket 14 in the axial direction and the other end of the infrared transmitting element 11 abutting against the base 15 in the axial direction.

[0041] In one embodiment, the heating assembly 10 further includes a clamping member 16, which is provided at the end of the support 14 away from the base 15. The clamping member 16 is used to abut against and clamp the aerosol matrix 13 so that the aerosol matrix 13 can be more stable in the heating assembly 10.

[0042] The base 15 has a receiving cavity 151, the bottom wall of which supports the aerosol matrix 13. One end of the heat exchange channel 112 near the support 14 is connected to the outside atmosphere, and the other end of the heat exchange channel 112 near the base 15 is connected to the receiving cavity 151, allowing gas in the receiving cavity 151 to flow into the aerosol matrix 13. The receiving cavity 151 typically accommodates the functional section below the matrix section. However, in other embodiments, if the matrix section is the bottommost part of the aerosol matrix 13, the base 15 may not have a receiving cavity 151, so that when the aerosol matrix 13 is inserted into the heating assembly 10, the bottommost matrix section can be located within the infrared transmitting element 11.

[0043] Furthermore, in one embodiment, the heating assembly 10 further includes a sealing member 17 and an airflow sensor 18. At least a portion of the sealing member 17 is located on the side of the base 15 away from the infrared transmitter 11. The sealing member 17 and the base 15 cooperate to form a sensing cavity 19. The bottom wall of the receiving cavity 151 has an air hole 1511, which connects the sensing cavity 19 and the receiving cavity 151. At least a portion of the cavity wall of the sensing cavity 19 is an elastic film 191. A receiving cavity 171 is provided on the side of the elastic film 191 away from the sensing cavity 19. The airflow sensor 18 is disposed in the receiving cavity 171. The deformation of the elastic film 191 can change the volume of the receiving cavity 171. The airflow sensor 18 is used to sense changes in air pressure within the receiving cavity 171. Therefore, when a user inhales, the rapid airflow within the sensing cavity 19 changes its volume, causing the elastic diaphragm 191 to deform. This deformation alters the volume of the receiving cavity 171, resulting in a change in air pressure within the cavity, which in turn allows the airflow sensor 18 to detect the user's inhalation. Preferably, the airflow sensor 18 is a microphone. The sealing element 17 is made of an elastic material, such as silicone. The sensing cavity 19 is a relatively sealed chamber, allowing for precise detection of air pressure changes during inhalation. Furthermore, since the sensing cavity 19 is located below the aerosol matrix 13, it can also collect condensate, preventing it from flowing out of the heating assembly 10. The sealing element 17 is sealed to the bracket 14 and / or the base 15, thereby improving the overall sealing of the heating assembly 10 and preventing leakage.

[0044] The above examples illustrate this application only to aid in understanding the invention and are not intended to limit the scope of the application. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the concept of this application.

Claims

1. A heating component, applied in an aerosol generating device, characterized in that, include: An infrared transmitting element is provided with a receiving cavity and a heat exchange channel inside the infrared transmitting element. The heat exchange channel is disposed at intervals on the outside of the receiving cavity. The receiving cavity is used to contain an aerosol matrix. The heating element is disposed on the infrared transmitting element and on the outside of the heat exchange channel. The heating element is used to generate heat to heat the gas in the heat exchange channel into a hot gas flow for heating the aerosol matrix in the containment cavity. The infrared transmitting element is configured to allow the infrared radiation generated by the heating element to heat the aerosol matrix in the containment cavity.

2. The heating assembly according to claim 1, characterized in that, The infrared transmitting element is a tubular structure with an annular sidewall. The inner side of the annular sidewall encloses the receiving cavity. The heat exchange channel is disposed between the outer side of the annular sidewall and the inner side of the annular sidewall. The heating element is disposed on the outer side of the annular sidewall.

3. The heating assembly according to claim 2, characterized in that, The heat exchange channel extends through both ends of the annular sidewall in the axial direction, and / or the heat exchange channel has a porous structure.

4. The heating assembly according to claim 2, characterized in that, The heat exchange channel extends from one end of the annular sidewall to the other end in the axial direction. There are multiple heat exchange channels, which are arranged at intervals along the circumference of the annular sidewall.

5. The heating assembly according to claim 1, characterized in that, The infrared transmitting element has a transmittance of infrared light greater than or equal to 80%.

6. The heating assembly according to claim 5, characterized in that, The infrared transmissive element is configured as a glass-ceramic infrared transmissive element.

7. The heating assembly according to any one of claims 1-6, characterized in that, The inner diameter of the receiving cavity is larger than the outer diameter of the aerosol matrix, so that when the aerosol matrix is ​​contained in the receiving cavity, the outer wall of the aerosol matrix and the inner wall of the receiving cavity are spaced apart.

8. The heating assembly according to any one of claims 1-6, characterized in that, The heating assembly further includes a bracket and a base, which abut against the two ends of the infrared transmissive element along the axial direction, respectively. The base has a receiving cavity, the bottom wall of which is used to support the aerosol matrix. The heat exchange channel is connected to the outside atmosphere at one end near the bracket and to the receiving cavity at the other end near the base. Gas in the receiving cavity can flow into the aerosol matrix.

9. The heating assembly according to claim 8, characterized in that, The heating assembly further includes a seal and an airflow sensor. At least a portion of the seal is located on the side of the base away from the infrared transmissive element. The seal and the base cooperate to form a sensing cavity. The bottom wall of the receiving cavity has an air hole that connects the sensing cavity and the receiving cavity. At least a portion of the cavity wall of the sensing cavity is an elastic film. A receiving cavity is provided on the side of the elastic film away from the sensing cavity. The airflow sensor is located in the receiving cavity. The deformation of the elastic film can change the volume of the receiving cavity. The airflow sensor is used to sense changes in air pressure within the receiving cavity.

10. An aerosol generating device, characterized in that, Includes the heating assembly as described in any one of claims 1-9.

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