Radio frequency radiator structure and aerosol generation device

Abstract

A radio frequency radiator structure and an aerosol generation device. The aerosol generation device is configured to generate a power signal and transmit same to the radio frequency radiator structure. The radio frequency radiator structure comprises a dielectric substrate (1) and an antenna structure (2), wherein the dielectric substrate (1) encloses to form an accommodating cavity (10), and the accommodating cavity (1) is configured to accommodate a heated medium (3); the antenna structure (2) is fixed to an inner surface of the dielectric substrate (1), there is a slot area (20) inside the antenna structure (2), and the antenna structure (2) is provided with an opening, which is connected to the slot area (20); and the antenna structure (2) is configured to receive the power signal to form a high-field-strength distribution in the slot area (20). The antenna structure (2) is conformal with the inner surface of the dielectric substrate (1), and the antenna structure (2) has the slot area (20), such that the high-field-strength distribution is realized in the slot area (20); a high-frequency electric field is restricted inside the heated medium (3), so that the heating effect of the heated medium (3) is improved; moreover, the structure is simplified, and costs are reduced.

Description

A radio frequency radiator structure and aerosol generating device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 27, 2024, with application number 202410370607.2, and invention name “A radio frequency radiator structure and aerosol generating device”, and the Chinese patent application filed with the China Patent Office on March 27, 2024, with application number 202420629368.3, and utility model name “A radio frequency radiator structure and aerosol generating device”, the entire contents of which are incorporated by reference into the application. Technical Field

[0002] The present application belongs to the technical field of aerosol preparation, and in particular relates to a radio frequency radiator structure and an aerosol generating device. Background Art

[0003] With the rapid development of heat-not-burn aerosol generating devices, the types of heat-not-burn aerosol generating devices are becoming increasingly diverse. According to the aerosol generation principle, they can be mainly divided into resistive, ultrasonic, infrared, electromagnetic, and radio frequency types. Among them, radio frequency aerosol generating devices have attracted the attention of many users. Radio frequency aerosol generating devices are aerogel generating devices with a resonant cavity structure as the main radio frequency radiator structure. Usually, a 1 / 4 wavelength microwave resonant cavity is used to deliver microwave energy into the aerosol matrix through an inner conductor pin. Because the electric field intensity in the 1 / 4 wavelength resonant cavity is concentrated at the top of the inner conductor pin, and the resonant cavity is not fully enclosed and one end is open, the radio frequency energy is easily leaked, resulting in excessive energy consumption and the risk of electromagnetic radiation health problems.

[0004] Summary of the Invention

[0005] The technical purpose of this application is to provide a radio frequency radiator structure and an aerosol generating device to solve the technical problems of radio frequency aerosol generating devices in related technologies, such as easy leakage of radio frequency energy, excessive energy consumption, and potential health risks of electromagnetic radiation.

[0006] In a first aspect, an embodiment of the present application provides a radio frequency radiator structure for an aerosol generating device, wherein the aerosol generating device is used to generate a power signal and transmit it to the radio frequency radiator structure; the radio frequency radiator structure includes a dielectric substrate and an antenna structure, wherein the dielectric substrate is enclosed to form a receiving cavity, and the receiving cavity is used to receive a heated medium; the antenna structure is fixed to the inner surface of the dielectric substrate, and the interior of the antenna structure has a gap area, and the antenna structure is provided with an opening, which is connected to the gap area; the antenna structure is used to receive a power signal to form a high field strength distribution in the gap area.

[0007] In the second aspect, an embodiment of the present application also provides an aerosol generating device, which includes a signal generating component and a radio frequency radiator structure, wherein the signal generating component is used to generate a power signal and transmit it to the radio frequency radiator structure; the radio frequency radiator structure includes a dielectric substrate and an antenna structure, the dielectric substrate is enclosed to form a receiving cavity, and the receiving cavity is used to receive a heated medium; the antenna structure is fixed to the inner surface of the dielectric substrate, and the interior of the antenna structure has a gap area, the antenna structure is provided with an opening, and the opening is connected to the gap area; the antenna structure is used to receive a power signal to form a high field strength distribution in the gap area.

[0008] In the present application, the radio frequency radiator structure receives the power signal generated by the signal generating component via an antenna structure. Since the antenna structure is fixed to the inner sidewall of the dielectric substrate, coupling between the antenna structure and the dielectric substrate allows a high-frequency electric field to be generated within the receiving cavity enclosed by the dielectric substrate. This allows the heated medium contained within the receiving cavity to be heated via the dielectric heating principle, thereby generating an aerosol. Furthermore, the antenna structure is sheet-shaped. Since the antenna structure is fixed to the inner surface of the dielectric substrate, the antenna structure is configured to conform to the inner surface of the dielectric substrate, forming a common configuration with the dielectric substrate. This allows a high-frequency electric field and an effective resonant frequency to be provided within the receiving cavity enclosed by the dielectric substrate. Furthermore, the high-frequency electric field can be effectively confined within the receiving cavity, thereby confining the high-frequency electric field within the heated medium, thereby enhancing the heating effect on the heated medium. Furthermore, because the antenna structure has a slot region within it and is provided with an opening, the opening and the slot region are connected, and the slot region extends axially along the receiving cavity, and / or a portion of the slot region extends circumferentially along the receiving cavity, a high field strength distribution can be achieved in the slot region with a small power input, further confining the high-frequency electric field within the heated medium, thereby better heating the heated medium. Because the high-frequency electric field can be well confined within the heated medium, the technical issues of radio frequency energy leakage and the health risks of electromagnetic radiation can be effectively addressed. No additional metal cavity is required as a shielding cavity, simplifying the structure and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0010] FIG1 is a schematic diagram of the three-dimensional structure of a radio frequency radiator structure in an embodiment of the present application;

[0011] FIG2 is an exploded view of the structure of a radio frequency radiator in an embodiment of the present application;

[0012] FIG3 is a schematic structural diagram of the antenna structure and the microstrip feeding structure when they are connected before the antenna structure, the microstrip feeding structure, and the dielectric substrate are conformed to each other in an embodiment of the present application;

[0013] FIG4 is a schematic structural diagram of the antenna structure, microstrip feeding structure, and dielectric substrate connected after the antenna structure, microstrip feeding structure, and dielectric substrate are conformal in an embodiment of the present application (the dielectric substrate is omitted);

[0014] FIG5 is a schematic diagram of the resonant frequency of the radio frequency radiator structure in an embodiment of the present application.

[0015] In the accompanying drawings, the various reference numerals represent: 1. dielectric substrate; 10. receiving cavity; 2. antenna structure; 20. gap area; 201. first gap; 202. second gap; 203. third gap; 21. main body; 22. connecting part; 221. first end; 222. second end; 3. heated medium; 4. microstrip feeding structure; 5. zero potential reference part. DETAILED DESCRIPTION

[0016] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0017] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0018] Furthermore, 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0019] Please refer to Figures 1-4. An embodiment of the present application provides a radio frequency radiator structure for an aerosol generating device. The aerosol generating device includes a signal generating component, which is used to generate a power signal and transmit it to the radio frequency radiator structure; the radio frequency radiator structure includes a dielectric substrate 1 and an antenna structure 2, the dielectric substrate 1 encloses a receiving cavity 10, and the receiving cavity 10 is used to receive a heated medium 3; the antenna structure 2 is fixed to the inner surface of the dielectric substrate 1, and the interior of the antenna structure 2 has a gap area 20, and the antenna structure 2 is provided with an opening, which is connected to the gap area 20; the gap area 20 extends along the axial direction of the receiving cavity 10, and / or the gap area 20 extends along the circumferential direction of the receiving cavity 10; the antenna structure 2 is used to receive the power signal to form a high field strength distribution in the gap area 20.

[0020] In the embodiment of the present application, the RF radiator structure receives the power signal generated by the signal generating component via the antenna structure 2. Through coupling between the antenna structure 2 and the dielectric substrate 1, a high-frequency electric field is generated within the receiving cavity 10 enclosed by the dielectric substrate 1. This allows the heated medium 3 contained within the receiving cavity 10 to be heated via the principle of dielectric heating, thereby generating an aerosol. Furthermore, because the antenna structure 2 is fixed to the inner surface of the dielectric substrate 1, the antenna structure 2 and the dielectric substrate 1 form a common configuration. This provides a high-frequency electric field and an effective resonant frequency within the receiving cavity 10 enclosed by the dielectric substrate 1. Furthermore, the high-frequency electric field is effectively confined within the receiving cavity 10, thereby confining the high-frequency electric field within the heated medium 3, thereby enhancing the heating effect on the heated medium 3. Furthermore, because the antenna structure 2 has a gap region 20 within it and is provided with an opening connected to the gap region 20, a high field strength distribution within the gap region 20 can be achieved with a small power input. This further confines the high-frequency electric field within the heated medium 3, thereby achieving better heating of the heated medium 3. Since the high-frequency electric field can be well confined inside the heated medium 3, the technical problems of easy leakage of radio frequency energy and the health risks of electromagnetic radiation can be effectively solved. There is no need to add an external metal cavity as a shielding cavity, which can simplify the structure and reduce costs.

[0021] The dielectric substrate 1 can be used to support and secure the antenna structure 2. Furthermore, the dielectric substrate can be made of materials commonly used in high-frequency PCBs, such as Rogers 3003 or Rogers 4003. Materials with varying relative permittivity and loss tangent can be selected based on electric field confinement and coupling effects. The dielectric substrate 1 can be single-layer or multi-layer. In some embodiments, the antenna structure 2 is copper-clad and can be etched onto the dielectric substrate 1.

[0022] Antenna structure 2 is fixed to the inner surface of dielectric substrate 1, so that antenna structure 2 and dielectric substrate 1 form a common configuration, that is, antenna structure 2 and dielectric substrate 1 are conformally designed. For example, dielectric substrate 1 is cylindrical, and antenna structure 2 is attached to the inner surface of dielectric substrate 1. Antenna structure 2 can be configured in an arc shape to form a common configuration with dielectric substrate 1.

[0023] The gap area 20 extends along the axial direction of the receiving cavity 10, which may mean that the extension direction of the gap area 20 is parallel to the axial direction of the receiving cavity 10, or it may mean that the extension direction of the gap area 20 and the axial direction of the receiving cavity 10 have a certain angle, such as 1° to 20°; similarly, the gap area 20 extends along the circumferential direction of the receiving cavity 10, which may mean that the extension direction of the gap area 20 is parallel to the circumferential direction of the receiving cavity 10, or it may mean that the extension direction of the gap area 20 and the axial direction of the receiving cavity 10 have a certain angle.

[0024] Furthermore, the heated medium 3 can be selected based on its relative dielectric constant and loss tangent, and in accordance with the basic principles of dielectric heating, from solid aerosol-generating media containing polar molecules (such as HNB cigarettes) to liquid aerosol-generating media containing polar molecules, or aerosol media such as tobacco oil or aerosol generated by heating tobacco oil. The shape of the heated medium 3 and the shape of the internal medium can be modified based on the location of electric field concentration. Alternatively, if the heated medium 3 is solid, the distribution of substances within the heated medium 3, such as the distribution of particles within the heated medium 3, can be altered to ensure that the heated medium 3 is fully heated in the high-frequency electric field.

[0025] Furthermore, the antenna structure 2 includes a main body 21 and two connecting parts 22, the main body 21 extends along the axial direction of the receiving cavity 10, the two connecting parts 22 are arranged on the same side of the main body 21 and extend along the circumference of the receiving cavity 10, and there is a first gap 201 between the two connecting parts 22 along the axial direction of the receiving cavity 10; the connecting part 22 has a first end 221 and a second end 222; the first end 221 is connected to the main body 21, and there is a second gap 202 between the second end 222 and the main body 21 along the circumference of the receiving cavity 10, and there is a third gap 203 between the first end 221 and the second end 222 along the axial direction of the receiving cavity 10; the first gap 201, the second gap 202, and the third gap 203 form a gap area 20.

[0026] Specifically, the main body portion 21 and the two connecting portions 22 are connected so that the gap area 20 is a T-shaped hollow area.

[0027] In some embodiments, when the antenna structure 2 conforms to the dielectric substrate 1, the antenna structure 2 can be positioned horizontally on the inner surface of the dielectric substrate 1, such that the main portion 21 of the antenna structure 2 is parallel to the axial direction of the receiving cavity 10, and the two connecting portions 22 are parallel to the circumference of the receiving cavity 10. When the main portion 21 and the connecting portions 22 receive a power signal, they couple with the dielectric substrate 1 to generate a high-frequency electric field within the receiving cavity 10. Furthermore, because both the main portion 21 and the connecting portions 22 conform to the inner surface of the dielectric substrate 1, a high-frequency electric field and an effective resonant frequency can be provided within the receiving cavity 10. Furthermore, the high-frequency electric field can be effectively confined within the receiving cavity 10, thereby confining the high-frequency electric field within the heated medium 3, thereby enhancing the heating effect on the heated medium 3. Furthermore, the two connecting portions 22 are spaced apart, resulting in a first gap 201 between the two connecting portions 22. A first second gap 202 exists between the second end 222 corresponding to one connecting portion 22 and the main portion 21; a second second gap 202 exists between the second end 222 corresponding to the other connecting portion 22 and the main portion 21. One first end 221 and the corresponding second end 222 are spaced apart, forming a first third gap 203; the other first end 221 and the corresponding second end 222 are spaced apart, forming a second third gap 203. The first gap 201, the two second gaps 202, and the two third gaps 203 are connected to form a gap region 20. When the main body 21 and the connecting portion 22 receive a power signal, they couple with the dielectric substrate 1 to form a high electric field strength distribution in the first gap 201, the two second gaps 202, and the two third gaps 203, further enhancing the heating effect on the heated medium 3.

[0028] In other embodiments, when the antenna structure 2 and the dielectric substrate 1 are conformal, the antenna structure 2 can be tilted and arranged on the inner surface of the dielectric substrate 1, so that the main body 21 of the antenna structure 2 has a certain angle with the axial direction of the receiving cavity 10, and the two connecting parts 22 have a certain angle with the circumference of the receiving cavity 10. The specific angle can be 1° to 20°.

[0029] In other embodiments, the slot area is not limited to the T-shaped hollow area, and the antenna structure 2 can be designed to form more slot areas 20 according to actual needs to meet high field strength distribution.

[0030] Furthermore, in some embodiments, the two connecting portions 22 are symmetrically arranged.

[0031] Specifically, the two connecting portions 22 are symmetrically arranged, thereby forming symmetrical second gaps 202 and symmetrical third gaps 203. The two connecting portions 22 are spaced apart along the axial direction of the receiving cavity 10. Therefore, when the antenna structure 2 and the dielectric substrate 1 are coupled, a symmetrical high-frequency electric field is formed along the axial direction of the receiving cavity 10 through the symmetrical second gaps 202 and the symmetrical third gaps 203.

[0032] In some embodiments, the two connecting portions 22 may be asymmetrically arranged. For example, the second end portion 222 of one connecting portion 22 may extend axially toward the receiving cavity 10 longer than the second end portion 222 of the other connecting portion 22; and / or the second gap 202 of one connecting portion 22 may be larger than the second gap 202 of the other connecting portion 22.

[0033] Furthermore, in the same connecting portion 22 , the extension length of the second end portion 222 along the axial direction of the receiving cavity 10 is greater than the extension length of the first end portion 221 .

[0034] Specifically, in the antenna structure 2, along the axial direction of the receiving cavity 10, both second ends 222 are located between the two first ends 221. Within the same connecting portion 22, the second end 222 extends longer along the axial direction of the receiving cavity 10 than the first end 221. This means that the central portion of the antenna structure 2 covers a relatively larger area in the axial direction of the receiving cavity 10. The second end 222 of the antenna structure 2 forms a first gap 201 with the other second end 222, a second gap 202 with the main body 21, and a third gap 203 with the corresponding first end 221. This means that the gap region 20 is primarily formed around the second end 222. When the antenna structure 2 is coupled to the dielectric substrate 1, the high-frequency electric field distribution can be adjusted by varying the axial extension of the second end 222 in the receiving cavity 10. Furthermore, the sizes of the first gap 201, second gap 202, and third gap 203 within the gap region 20 can be varied. Since the size of the gap area 20 changes, the concentration of the high-frequency electric field in the first gap 201, the second gap 202, and the third gap 203 can be adjusted. The extension length of the second end 222 along the axial direction of the receiving cavity 10 can be adjusted according to the actual electric field distribution requirements.

[0035] Furthermore, the third gap 203 is curved or rectangular.

[0036] Specifically, within the same connecting portion 22, the third gap 203 is formed between the first end 221 and the second end 222. In some embodiments, before the antenna structure 2 and the dielectric substrate 1 are not conformed, the first end 221 and the second end 222 can be rectangular and parallel, thereby forming a rectangular third gap 203. In other embodiments, before the antenna structure 2 and the dielectric substrate 1 are not conformed, the first end 221 and / or the second end 222 can be curved, thereby forming a curved third gap 203. For example, the first end 221 can be curved away from the second end 222, while the second end 222 is rectangular. Alternatively, the first end 221 can be curved away from the second end 222, while the second end 222 is curved away from the first end 221. Alternatively, the first end 221 can be curved away from the second end 222, while the second end 222 is curved toward the first end 221. Alternatively, the first end 221 can be curved away from the second end 222, while the second end 222 is curved toward the first end 221. These arrangements can all result in the third gap 203 being curved. When the antenna structure 2 is coupled to the dielectric substrate 1, the distribution of the high-frequency electric field can be adjusted by changing the shape of the third gap 203, and the concentration of the high-frequency electric field in the third gap 203 can also be adjusted. The specific shape of the third gap 203 can be set according to actual needs.

[0037] Furthermore, in the same connecting portion 22 , the second end portion 222 is parallel to the first end portion 221 , and the first end portion 221 is vertically connected to the end of the main body portion 21 .

[0038] Specifically, in the antenna structure 2, along the axial direction of the receiving cavity 10, the two second ends 222 are located between the two first ends 221, with one second end 222 connected to the top of the main body 21 and the other second end 222 connected to the bottom of the main body 21, so that the gap region 20 is formed inside the antenna structure 2. In addition, the two first ends 221 and the two second ends 222 are perpendicular to the main body 21, forming a T-shaped gap region 20.

[0039] Furthermore, the radial distance between the antenna structure 2 and the heated medium 3 is 0 to 3 mm.

[0040] Specifically, the antenna structure 2 is sheet-shaped and fixed to the inner surface of the dielectric substrate 1. The heated medium 3 is contained within the receiving cavity 10, that is, located within the dielectric substrate 1. A small gap may exist between the heated medium 3 and the antenna structure 2. Specifically, the radial distance between the antenna structure 2 and the heated medium 3 may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.8, 0.9, 1.0, 1.2, 1.5, 1.8, 2.0, 2.2, 2.5, 2.8, or 3.0 mm.

[0041] Furthermore, the dielectric substrate 1 can rotate in the circumferential direction so that the antenna structure 2 and the heated medium 3 can rotate relative to each other.

[0042] Specifically, the dielectric substrate 1 and the heated medium 3 both have cylindrical structures. Due to the small gap between the heated medium 3 and the antenna structure 2, and the fact that the antenna structure 2 is fixed to the inner sidewall of the dielectric substrate 1, coupled with the thickness of the antenna structure 2, a gap also exists between the inner sidewall of the dielectric substrate 1 and the heated medium 3. Therefore, in practical applications, the heated medium 3 can be kept stationary while the dielectric substrate 1 is rotated, causing the heated medium 3 and the dielectric substrate 1 to rotate relative to each other, thereby achieving relative rotation between the heated medium 3 and the antenna structure 2 fixed to the dielectric substrate 1. During the heating process of the heated medium 3, if the heated medium 3 and the antenna structure 2 remain relatively stationary, the heat will be relatively concentrated. However, in the embodiment of the present application, by causing the antenna structure 2 and the heated medium 3 to rotate relative to each other, uniform heating of the heated medium 3 can be achieved. It is understood that relative rotation between the heated medium 3 and the dielectric substrate 1 can be achieved by keeping the dielectric substrate 1 stationary and rotating the heated medium 3.

[0043] Furthermore, the antenna structure 2 extends along the axial direction of the receiving cavity 10 , and the extension length of the antenna structure 2 is between 10.8 and 19 mm.

[0044] Specifically, the antenna structure 2 can be copper-clad, and the axial extension length of the antenna structure 2 toward the receiving cavity 10 can be 10.8, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19 mm, etc. Correspondingly, in actual applications, after the antenna structure 2 conforms to the shape, the circumferential extension width of the antenna structure 2 toward the receiving cavity 10 can be adaptively adjusted, so that the antenna structure 2 can operate in the range of 2.0 to 5.1 GHz. It can be understood that the larger the size of the antenna structure 2, the lower the operating frequency; and the smaller the size of the antenna structure 2, the higher the operating frequency.

[0045] In some specific embodiments, after conforming, the antenna structure 2 has an axial extension length of 16 mm toward the receiving cavity 10, a circumferential extension width of 12 mm toward the receiving cavity 10, and a thickness of 0.035 mm. This configuration enables the antenna structure 2 to operate at 2.394 GHz, as shown in FIG5 .

[0046] Furthermore, the size of the gap area 20 can be changed by changing the dimensions of the internal structure of the antenna structure 2, such as changing the structural dimensions of the main body 21 and the connecting portion 22, so as to adjust the operating frequency of the antenna structure 2.

[0047] Furthermore, in some embodiments, the RF radiator structure also includes a microstrip feeding structure 4, which is sheet-shaped and is configured to fit onto the inner surface of the dielectric substrate 1. The microstrip feeding structure 4 is connected to one end of the antenna structure 2 and is fixed to the inner side wall of the dielectric substrate 1. The antenna structure 2 receives a power signal through the microstrip feeding structure 4.

[0048] Specifically, the microstrip feed structure 4 can be integrally formed with the antenna structure 2, and then both can be conformed to the inner surface of the dielectric substrate 1 and integrally positioned on the inner sidewall of the dielectric substrate 1. The microstrip feed structure 4 can be directly connected to the power signal output by the signal generating component, so that the antenna structure 2 can receive the power signal through the microstrip feed structure 4. Because the microstrip feed structure 4 can directly connect to the power signal, it does not require an SMA connector. Unlike a coaxial insertion feed structure, it is directly integrally formed with the antenna structure 2. When the antenna structure 2 is fixed to the inner surface of the dielectric substrate 1, the microstrip feed structure 4 can also be fixed to the inner surface of the dielectric substrate 1, thereby reducing assembly difficulty.

[0049] In some embodiments, the antenna structure 2 may also be directly connected to the output end of the signal generating component through an SMA connector to achieve signal coupling between the antenna structure 2 and the signal generating component.

[0050] Furthermore, the RF radiator structure further includes a zero potential reference member 5, which is fixed to the outside of the dielectric substrate 1. The zero potential reference member 5 can serve as a reference zero potential connected to the ground plane of the signal generating component.

[0051] Furthermore, the antenna structure 2, microstrip feed structure 4, and zero potential reference element 5 can be made of high-conductivity materials, such as copper, aluminum, silver, or gold, based on actual cost and impedance requirements. These materials have low resistivity, strong conductivity, and a stable structure. Of course, in other embodiments, alloy materials corresponding to metal materials such as copper, aluminum, silver, and gold may also be used, without limitation.

[0052] Furthermore, an aerosol generating device includes a signal generating component and a radio frequency radiator structure, wherein the signal generating component is used to generate a power signal.

[0053] Specifically, the signal generating component may include a power supply and a radio frequency source. When the power supply is started, the radio frequency source is connected to the power supply, and the DC signal is converted into a high-power radio frequency electromagnetic wave signal through the radio frequency source. The high-power radio frequency electromagnetic wave signal is input into the radio frequency radiator structure. The radio frequency radiator structure is coupled with the heated medium 3, generating an electric field distribution in the heated medium 3, and through the high-frequency electromagnetic field, based on the dielectric heating principle, the heated medium 3 generates heat and produces aerosol. The radio frequency radiator structure can generate a high field strength distribution and can effectively confine the high-frequency electric field within the receiving cavity 10, so as to confine the high-frequency electric field inside the heated medium 3, thereby improving the heating effect on the heated medium 3, so that the heated medium 3 generates heat and produces aerosol in 0.5 to 5 seconds, and has a uniform heating effect.

[0054] Furthermore, in a specific embodiment, the power supply may be a solid-state DC source with an output voltage of 4-6V and a battery capacity of 1000-4000mAH. The total output power signal of the RF source has a power range of approximately 15-40W (approximately 42-46dBm).

[0055] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0056] The above is a description of the technical solution provided by this application. For those skilled in the art, according to the ideas of the embodiments of this application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A radio frequency radiator structure for an aerosol generating device, wherein the aerosol generating device is used to generate a power signal and transmit it to the radio frequency radiator structure; wherein: The RF radiator structure includes a dielectric substrate and an antenna structure. The dielectric substrate encloses a receiving cavity for receiving a heated medium. The antenna structure is fixed to the inner surface of the dielectric substrate and has a gap area inside. The antenna structure is provided with an opening connected to the gap area. The antenna structure is used to receive a power signal to form a high field strength distribution in the gap area.

2. The radio frequency radiator structure according to claim 1, wherein: The antenna structure includes a main body and two connecting parts, wherein the main body extends along the axial direction of the receiving cavity, the two connecting parts are arranged on the same side of the main body and extend along the circumference of the receiving cavity, and a first gap exists between the two connecting parts along the axial direction of the receiving cavity; The two connecting portions each have a first end and a second end; and the two second end portions are located between the two first end portions; in the same connecting portion, the first end portion is connected to the main body portion, a second gap is formed between the second end portion and the main body portion along the circumferential direction of the receiving cavity, and a third gap is formed between the first end portion and the second end portion along the axial direction of the receiving cavity; The first gap, the second gap, and the third gap are connected to form the gap area.

3. The radio frequency radiator structure according to claim 2, wherein: The two connecting parts are symmetrically arranged.

4. The radio frequency radiator structure according to claim 2, wherein: In the same connecting portion, an extension length of the second end portion along the axial direction of the receiving cavity is greater than an extension length of the first end portion.

5. The radio frequency radiator structure according to claim 2, wherein: The third gap is curved or rectangular.

6. The radio frequency radiator structure according to claim 2, wherein: In the same connecting portion, the second end portion is parallel to the first end portion, and the first end portion is perpendicularly connected to the end of the main body portion.

7. The radio frequency radiator structure according to claim 1, wherein: The antenna structure is in a sheet shape, and the radial distance between the antenna structure and the heated medium is 0-3 mm.

8. The radio frequency radiator structure according to claim 7, wherein: The dielectric substrate can rotate in a circumferential direction so that the antenna structure and the heated medium can rotate relative to each other.

9. The radio frequency radiator structure according to claim 1, wherein: The antenna structure extends along the axial direction of the receiving cavity, and the extension length of the antenna structure is between 10.8-19 mm.

10. The radio frequency radiator structure according to claim 1, wherein: The RF radiator structure also includes a microstrip feeding structure, which is in the shape of a sheet and is configured to fit onto the inner surface of the dielectric substrate. The microstrip feeding structure is connected to one end of the antenna structure and is fixed to the inner side wall of the dielectric substrate. The antenna structure receives a power signal through the microstrip feeding structure.

11. The radio frequency radiator structure according to claim 10, wherein: The radio frequency radiator structure further includes a zero potential reference component, and the zero potential reference component is fixed to the outer side of the dielectric substrate.

12. An aerosol generating device, wherein: The invention comprises a signal generating component and a radio frequency radiator structure, wherein the signal generating component is used to generate a power signal and transmit it to the radio frequency radiator structure; the radio frequency radiator structure comprises a dielectric substrate and an antenna structure, wherein the dielectric substrate encloses a receiving cavity, and the receiving cavity is used to receive a heated medium; the antenna structure is fixed to the inner surface of the dielectric substrate, and has a gap area inside the antenna structure, and the antenna structure is provided with an opening, and the opening is connected to the gap area; the antenna structure is used to receive a power signal to form a high field strength distribution in the gap area.

13. The aerosol generating device according to claim 12, wherein: The antenna structure includes a main body and two connecting parts, wherein the main body extends along the axial direction of the receiving cavity, the two connecting parts are arranged on the same side of the main body and extend along the circumference of the receiving cavity, and a first gap exists between the two connecting parts along the axial direction of the receiving cavity; The two connecting portions each have a first end and a second end; and the two second end portions are located between the two first end portions; in the same connecting portion, the first end portion is connected to the main body portion, a second gap is formed between the second end portion and the main body portion along the circumferential direction of the receiving cavity, and a third gap is formed between the first end portion and the second end portion along the axial direction of the receiving cavity; The first gap, the second gap, and the third gap are connected to form the gap area.

14. The aerosol generating device according to claim 13, wherein: The two connecting parts are symmetrically arranged.

15. The aerosol generating device according to claim 13, wherein In the same connecting portion, an extension length of the second end portion along the axial direction of the receiving cavity is greater than an extension length of the first end portion.

16. The aerosol generating device according to claim 13, wherein: The third gap is curved or rectangular.

17. The aerosol generating device according to claim 13, wherein: In the same connecting portion, the second end portion is parallel to the first end portion, and the first end portion is perpendicularly connected to the end of the main body portion.

18. The aerosol generating device according to claim 12, wherein: The antenna structure is in a sheet shape, and the radial distance between the antenna structure and the heated medium is 0-3 mm.

19. The aerosol generating device according to claim 18, wherein The dielectric substrate can rotate in a circumferential direction so that the antenna structure and the heated medium can rotate relative to each other.

20. The aerosol generating device according to claim 12, wherein: The antenna structure extends along the axial direction of the receiving cavity, and the extension length of the antenna structure is between 10.8-19 mm.

21. The aerosol generating device according to claim 12, wherein: The RF radiator structure also includes a microstrip feeding structure, which is in the shape of a sheet and is configured to fit onto the inner surface of the dielectric substrate. The microstrip feeding structure is connected to one end of the antenna structure and is fixed to the inner side wall of the dielectric substrate. The antenna structure receives a power signal through the microstrip feeding structure.

22. The aerosol generating device according to claim 21, wherein The radio frequency radiator structure further includes a zero potential reference component, and the zero potential reference component is fixed to the outer side of the dielectric substrate.

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