Heating assembly and aerosol generating device
By employing a feed column and radiator structure in the aerosol generator, the electric field distribution is optimized, the problem of electric field non-uniformity is solved, and the heating uniformity and energy utilization efficiency are improved.
Patent Information
- Application Number
- CN202423305223.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In existing aerosol generators, the electric field distribution is uneven due to the placement of the central pin in the resonant cavity structure, which affects heating uniformity and user experience.
The structure employs a feed column and a radiator, with the feed column being a hollow structure and the radiator having circumferential gaps and complementary structures to optimize the electric field distribution and improve heating uniformity.
It improves the uniformity and energy utilization efficiency of radiant heating, thus enhancing the heating effect.
Smart Images
Figure CN223913486U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of radio frequency heating, and in particular to a heating assembly and an aerosol generating device. BACKGROUND
[0002] With the development of electronic technology, related applications have gradually been popularized and popularized. The aerosol generating device is a new electronic device, also known as an electronic cigarette or electronic smoking set, which is a device that generates smoke by heating related media to simulate the smoking experience.
[0003] In the related art, some aerosol generating devices use radio frequency heating technology for heating. In the heating assembly thereof, a resonant cavity structure is generally used, and a center pin is arranged in the resonant cavity structure to heat the medium to be heated. However, in actual application, it is found that due to the arrangement of the center pin, the electric field distribution is uneven, which leads to poor uniformity of heating and affects the user's experience of using the aerosol generating device.
[0004] Therefore, the problems in the related art need to be solved. CONTENT OF THE INVENTION
[0005] The present application aims to at least partly solve one of the problems in the related art.
[0006] To this end, an object of the embodiments of the present application is to provide a heating assembly and an aerosol generating device.
[0007] In order to achieve the above technical purpose, the technical solutions adopted by the embodiments of the present application include:
[0008] In one aspect, the embodiments of the present application provide a heating assembly, comprising:
[0009] a feeding column and a radiator; the feeding column is used for connecting electric energy, and the radiator is used for radiating heat according to the electric energy;
[0010] The feeding column is a hollow structure, and one end of the feeding column is a radio frequency feeding port for connecting a radio frequency source.
[0011] The radiator is connected to the feeding column, and a heating cavity is arranged in the radiator, which is used for placing the medium to be heated. The radiator further comprises at least one gap arranged in communication with the heating cavity, and the gap extends along the circumference of the radiator.
[0012] In addition, the heating assembly according to the above embodiments of the present application can also have the following additional technical features:
[0013] Further, in an embodiment of the present application, the number of gaps is multiple, each of the gaps is arranged along the axial direction of the radiator, and each of the gaps extends along the circumferential direction of the radiator.
[0014] Further, in an embodiment of the present application, the width of each of the gaps is within 1-2 mm.
[0015] Further, in an embodiment of the present application, the distance between two adjacent gaps is within 2-3 mm.
[0016] Further, in an embodiment of the present application, the radiator is provided with a complementary structure on the inner side wall of the gap and / or the feed column is provided with a complementary structure on the inner side wall of the gap and towards the heating cavity, the complementary structure being used to enhance the electric field distribution of the electric field in the heating cavity near the feed column.
[0017] Further, in an embodiment of the present application, the complementary structure is a recess with an inner concave spherical crown surface.
[0018] Further, in an embodiment of the present application, the recess communicates the hollow structure of the feed column and the heating cavity.
[0019] Further, in an embodiment of the present application, the radius of the recess is less than or equal to 0.5 mm.
[0020] Further, in an embodiment of the present application, both ends of the radiator are open ends; or, the first end of the radiator is a closed end, and the second end of the radiator is an open end, wherein the first end of the radiator is the end close to the radio frequency feeding port, and the second end of the radiator is the end away from the radio frequency feeding port.
[0021] Further, in an embodiment of the present application, the center of the hollow structure, the center of the heating cavity, and the center of the complementary structure are on the same straight line in the axial direction of the radiator.
[0022] Further, the heating assembly further comprises a shielding member arranged on the outer periphery of the feed column and the radiator.
[0023] In another aspect, an embodiment of the present application provides an aerosol generating device, comprising:
[0024] a radio frequency source and the aforementioned heating assembly; the radio frequency source being connected to the radio frequency feeding port of the feed column.
[0025] The advantages and beneficial effects of the present application will be partially given in the following description, partially will become obvious from the following description, or will be learned by the practice of the present application.
[0026] The heating assembly and the aerosol generating device disclosed in the embodiments of the present application, the heating assembly comprises a feeding column and a radiator; the feeding column is used for accessing electric energy, and the radiator is used for radiating heat according to the electric energy; the feeding column is a hollow structure, and one end of the feeding column is a radio frequency feeding port used for accessing a radio frequency source; the radiator is connected with the feeding column, and a heating cavity is arranged in the radiator, the heating cavity is used for placing a medium to be heated; the radiator further comprises at least one gap arranged in communication with the heating cavity, and the gap extends along the circumference of the radiator. The heating assembly can improve the uniformity of radiation heating, improve the heating effect, and improve the energy utilization efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following introduces the drawings of the related technical solutions in the embodiments of the present application or the prior art. It should be understood that the drawings in the following introduction are only for the convenience of clearly describing part of the embodiments of the technical solutions of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0028] Figure 1 A structure schematic diagram of the heating assembly provided in the embodiments of the present application is shown;
[0029] Figure 2 A side view of the heating assembly (remove the shielding member) provided in the embodiments of the present application is shown;
[0030] Figure 3 A top view of the heating assembly (remove the shielding member) provided in the embodiments of the present application is shown;
[0031] Figure 4 A structure schematic diagram of the heating assembly provided in the embodiments of the present application is shown; Figure 2 A structure schematic diagram of the heating assembly provided in the embodiments of the present application is shown;
[0032] Figure 5 A structure schematic diagram of the heating assembly provided in the embodiments of the present application is shown; Figure 3 A structure schematic diagram of the heating assembly provided in the embodiments of the present application is shown;
[0033] Figure 6 A structure schematic diagram of the heating assembly provided in the embodiments of the present application is shown; Figure 3 A structure schematic diagram of the heating assembly provided in the embodiments of the present application is shown. DETAILED DESCRIPTION
[0034] The application will be further described below in conjunction with the accompanying drawings and specific embodiments. The described embodiments should not be regarded as limiting the application, and all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the application.
[0035] In the following description, "some embodiments" are related to a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.
[0036] In the description of the application, it should be understood that the terms "length", "upper", "lower", "front", "rear", "left", "right", "top", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application. In addition, the features defined as "first", "second" can be explicitly or implicitly included one or more features. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0037] In the description of the application, it should be noted that unless otherwise specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.
[0038] With the development of electronic technology, related applications have gradually been popularized. The aerosol generating device is a new electronic device, also known as electronic cigarette or electronic smoking set, which is a device that generates smoke by heating related media to simulate the smoking experience.
[0039] In the related art, some aerosol generating devices use radio frequency heating technology for heating. In the heating assembly, a resonant cavity structure is generally used, and a center pin is arranged in the resonant cavity structure to heat the medium to be heated. However, in actual application, it is found that due to the arrangement of the center pin, the electric field distribution is uneven, which leads to poor uniformity of heating and affects the user's experience of using the aerosol generating device.
[0040] In view of this, the embodiment of the present application provides a heating assembly and an aerosol generating device. The heating assembly comprises a feeding column and a radiator. The feeding column is used for accessing electric energy, and the radiator is used for radiating heat according to the electric energy. The feeding column is a hollow structure, and one end of the feeding column is a radio frequency feeding port used for accessing a radio frequency source. The radiator is connected with the feeding column, and the radiator is provided with a heating cavity used for placing a medium to be heated. The radiator further comprises at least one gap in communication with the heating cavity and extending along the circumference of the radiator. The heating assembly can improve the uniformity of radiative heating, improve the heating effect, and improve the energy utilization efficiency.
[0041] In the following, the heating assembly and the aerosol generating device provided in the embodiment of the present application are described in detail with reference to specific drawings.
[0042] The embodiment of the present application provides a heating assembly, which can be applied to the field of radio frequency heating technology. Specifically, referring to Figure 1 The heating assembly provided in the embodiment of the present application mainly comprises:
[0043] a feeding column 1 and a radiator 2. The feeding column 1 is used for accessing electric energy, and the radiator 2 is used for radiating heat according to the electric energy.
[0044] The feeding column 1 is a hollow structure, and one end of the feeding column 1 is a radio frequency feeding port 3 used for accessing a radio frequency source.
[0045] The radiator 2 is connected with the feeding column 1, and the radiator 2 is provided with a heating cavity used for placing a medium to be heated 4. The radiator 2 further comprises at least one gap in communication with the heating cavity and extending along the circumference of the radiator 2.
[0046] In the embodiment of the present application, a heating assembly is provided, which mainly comprises a feeding column 1 and a radiator 2. The feeding column 1 can be used to introduce electric energy into the heating assembly, and it can be connected with an external power source, such as a radio frequency source. The radiator 2 can generate heat according to the electric energy introduced by the feeding column 1 and radiate the heat.
[0047] Referring to Figure 1 , Figure 1A structure diagram of a heating assembly is shown. In the embodiment, the feeding column 1 is a hollow structure, and one end of the feeding column 1 is a radio frequency feeding port 3 for connecting a radio frequency source. The hollow structure of the feeding column 1 can reduce the outward radiation of the feeding column 1, improve the utilization efficiency of energy, and improve the uniformity of the overall radio frequency radiation field. Specifically, if the feeding column 1 is a solid structure, the overall feeding column 1 is equivalent to a half-wave antenna, and the electromagnetic wave is radiated outward. After being set as a hollow structure, the electromagnetic field is reflected in the hollow structure during feeding, which is similar to the restriction of the circular waveguide to the electromagnetic field.
[0048] In the embodiment, the radiator 2 is connected with the feeding column 1, and a heating cavity is arranged in the radiator 2, and the heating medium 4 can be placed in the heating cavity. In some embodiments, the heating medium 4 can include, but is not limited to, a cigar, an elongated cigarette, a heat-not-burn cigarette, a plant extract, and the like. In the embodiment, at least one gap is arranged on the radiator 2 and communicates with the heating cavity. The gap can be used to optimize the electric field distribution of the radiator 2. Specifically, the gap is arranged on the radiator 2, and the conductors on both sides of the gap can form a capacitor structure with the gap. The capacitor has low impedance characteristics under a high-frequency alternating current field and has a certain filtering effect. During heating, the radio frequency energy can cause an electric field concentration phenomenon in the area corresponding to the gap in the heating cavity, because the high-frequency current is more likely to pass through the capacitor, and the low-frequency current is blocked. The high-frequency electric field is concentrated near the gap, so that the electromagnetic energy density in the area is increased, which can effectively improve the heating effect. In the embodiment, the number of the gap can be one or more, such as two or more, and the application does not limit the number of the gap.
[0049] Specifically, in some embodiments, the number of the gap arranged on the radiator 2 can be multiple, and the gaps can be arranged at intervals along the axial direction of the radiator 2 and extend along the circumferential direction of the radiator 2. The arc length of the gap extending along the circumferential direction can be an optimal arc. When multiple gaps are arranged on the radiator 2, multiple layers of electric field distribution can be provided, and each gap can form a structure of multiple parallel capacitor plates, which is beneficial to improve the uniformity of energy radiation and reduce the probability of uneven heating. Specifically, referring to FIG. 2, the number of the gap arranged on the radiator 2 can be two, and the two gaps can be arranged at intervals along the axial direction of the radiator 2 and extend along the circumferential direction of the radiator 2. The arc length of the gap extending along the circumferential direction can be an optimal arc. Figure 2 , Figure 2A side view of a heating assembly (without shielding) is shown. In some embodiments, the radiating body 2 can be provided with multiple layers of gaps 7, which are in communication with the heating cavity. The gaps can be in the form of cutouts. In particular, the distance between each adjacent gap 7 can be the same, which can provide a multi-layered uniform electric field distribution and reduce the resonant frequency in a limited size. In some embodiments, the number of gaps 7 is not limited. The width L1 of each gap 7 can be within 1-2 mm, and the distance L2 between two adjacent gaps 7 can be within 2-3 mm. The specific values are not limited.
[0050] In some embodiments, the heating assembly can be provided with a complementary structure 5. The complementary structure 5 can be provided on the inner side wall of the radiating body 2 near the feed post 1 and the gap 7, and / or on the inner side wall of the feed post 1 facing the heating cavity and near the gap 7, for enhancing the electric field distribution of the electric field in the heating cavity near the feed post 1. The complementary structure 5 can be a recess, i.e., a groove formed in the inner side wall of the radiating body 2 and / or the side wall of the feed post 1 facing the heating cavity.
[0051] In particular, in some embodiments, the complementary structure 5 can be a recess with an inner concave spherical crown surface. As an example, the inner concave surface of the groove can be a semispherical surface. In this way, the radius of the recess can be adjusted to change the electric field distribution and the electric field intensity in the area. As an example, the radius of the recess can be less than or equal to 0.5 mm. When the radius of the recess is small, the hollow structure of the feed post can be in a state of not being in communication with the heating cavity, and when the radius of the recess is large, the hollow structure of the feed post can be in a state of being in communication with the heating cavity. Please refer to Figure 3 and Figure 4 , Figure 3 A top view of a heating assembly (without shielding) is shown. Figure 4 A side view of a heating assembly (without shielding) is shown. Figure 2 A cross-sectional structure along the A-A direction is shown. As shown in Figure 3 and Figure 4 In some embodiments, the complementary structure 5 can be in communication with the hollow structure 11 of the feed post and the heating cavity 21. When in communication, the complementary structure 5 can increase the coupling of the gap to the layered structure (i.e., the two parts of the radiating body along the width direction of the gap). Please refer to Figure 5 and Figure 6 , Figure 5 A top view of a heating assembly (without shielding) is shown. Figure 3 A cross-sectional structure along the B-B direction is shown. Figure 6 A side view of a heating assembly (without shielding) is shown. Figure 3A schematic diagram of a cross-sectional structure along the direction of C-C, Figure 5 and Figure 6 In the complementary structure 5, the hollow structure of the feed column 1 and the heating cavity are communicated.
[0052] In the embodiments of the present application, the complementary structure 5 is arranged on the inner side wall of the radiator 2 and / or the inner side wall of the feed column 1 facing the heating cavity. The effect of the complementary structure 5 is to further improve the uniformity of the electric field distribution. In the absence of the complementary structure 5, the radiator 2 can form a concentrated distribution of the electric field between the slits far from the feed column 1, but the uniformity of the electric field distribution near the feed column 1 is generally poor. By arranging the complementary structure 5 on the side wall of the feed column 1, the electric field near the feed column 1 can be pulled, so that the overall distribution of the electric field is uniform.
[0053] In some embodiments, the heating assembly provided by the present application can have both ends of the radiator 2 as open ends. In other embodiments, one end (referred to as the first end) of the radiator 2 close to the radio frequency feed port 3 can be a closed end, and the other end (referred to as the second end) of the radiator 2 away from the radio frequency feed port 3 can be an open end. By arranging the first end of the radiator 2 as a closed end, on the one hand, it is convenient to place and fix the medium to be heated 4 in the heating cavity, and on the other hand, it can further restrict the electric field in the heating cavity, which is conducive to improving the energy utilization efficiency and the heating effect.
[0054] In some embodiments, as shown in FIG. 1, Figure 4 In the heating assembly provided by the present application, the center of the hollow structure 11, the center of the heating cavity 21, and the center of the complementary structure 5 are on the same straight line in the axial projection of the radiator 2. In this way, the uniformity of the electric field distribution in the heating cavity 21 can be maintained, and when the medium to be heated 4 is placed, the medium to be heated 4 can be placed as much as possible at the center of the heating cavity 21, thereby achieving a better heating effect.
[0055] In some embodiments, as shown in FIG. 1, Figure 1 The heating assembly can further include a shielding member 6 arranged on the outer periphery of the feed column 1 and the radiator 2. The shielding member 6 can be a hollow cylindrical device, which can reduce electromagnetic leakage and improve energy utilization efficiency.
[0056] In the embodiments of the present application, an aerosol generating device is also provided, which includes a radio frequency source and the aforementioned heating assembly. The radio frequency source is connected to the radio frequency feed port 3 of the feed column 1.
[0057] In the embodiments of the present application, an aerosol generating device is provided, which can use the aforementioned heating assembly. In addition to the heating assembly, the device can also include a radio frequency source for inputting a radio frequency signal to the radio frequency feed port 3 of the feed column 1 of the heating assembly.
[0058] In addition, the aerosol generating device can further include other components such as a battery, a control circuit, an airflow detection component, a sensor, and a switch, wherein the battery can provide power supply for the radio frequency source, and common types include built-in batteries and replaceable batteries. The control circuit can be used to manage the charging and discharging of the battery, the heating component, and the working state of the device as a whole, and provide various safety functions (such as overheat protection, short circuit protection, etc.). The airflow detection component can be used to detect whether the user has taken an action of puffing. The sensor and the switch are mainly responsible for detecting various working conditions of the device and controlling the running state thereof, and the present application does not limit this.
[0059] In a specific use process, the power supply of the aerosol generating device is connected with the radio frequency source, and the direct current signal is converted into a high-power radio frequency electromagnetic wave signal by the radio frequency source. The high-power radio frequency electromagnetic wave signal is input into the radio frequency feed-in port 3 of the heating component. The radiator 2 is coupled with the medium to be heated 4 to generate an electric field distribution; based on the dielectric heating principle, the medium to be heated 4 generates heat and generates aerosol in 0.5-5s through the high-frequency electromagnetic field.
[0060] In the description of the present specification, the description of the terms "one embodiment", "another embodiment", or "some embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0061] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A heating assembly, characterized by, The heating assembly comprises: a feeding column and a radiator; the feeding column is used for accessing electric energy, and the radiator is used for radiating heat according to the electric energy; the feeding column is a hollow structure, and one end of the feeding column is a radio frequency feeding port used for accessing a radio frequency source; the radiator is connected with the feeding column, the radiator is provided with a heating cavity used for placing a medium to be heated, and the radiator further comprises at least one gap provided in communication with the heating cavity and extending along the circumference of the radiator.
2. A heating assembly according to claim 1, wherein, The number of the gaps is multiple, each of the gaps is provided in axial spacing along the radiator, and each of the gaps extends along the circumference of the radiator.
3. A heating assembly according to claim 1, wherein, The width of each of the gaps is within 1-2 mm.
4. A heating assembly according to claim 3, wherein, The distance between two adjacent gaps is within 2-3 mm.
5. A heating assembly according to claim 1, wherein, The radiator is provided with a complementary structure on the inner side wall close to the feeding column and the gap, and / or the feeding column is provided with a complementary structure on the inner side wall close to the heating cavity and the gap, and the complementary structure is used for enhancing the electric field distribution of the electric field in the heating cavity close to the feeding column.
6. A heating assembly according to claim 5, wherein, The complementary structure is a recess with an inner concave spherical crown surface.
7. A heating assembly according to claim 6, wherein, The recess is in communication with the hollow structure of the feeding column and the heating cavity.
8. A heating assembly according to claim 6, wherein, The radius of the recess is less than or equal to 0.5 mm.
9. A heating assembly according to claim 1, wherein, Both ends of the radiator are open ends; or the first end of the radiator is a closed end, and the second end of the radiator is an open end, wherein the first end of the radiator is the end close to the radio frequency feeding port, and the second end of the radiator is the end away from the radio frequency feeding port.
10. A heating assembly according to claim 5, wherein, The center of the hollow structure, the center of the heating cavity and the center of the complementary structure are on the same straight line in the axial projection along the radiator.
11. A heating assembly according to any one of claims 1-10, wherein, The heating assembly further comprises a shielding member provided on the outer periphery of the feeding column and the radiator.
12. An aerosol-generating device comprising: The heating assembly comprises: a radio frequency source and a heating assembly according to any one of claims 1-11; the radio frequency source accesses the radio frequency feeding port of the feeding column.