Radio frequency radiator structure and aerosol generating device

Abstract

The utility model provides a radio frequency radiator structure and an aerosol generating device. The aerosol generating device is used for generating a power signal and transmitting the power signal to the radio frequency radiator structure. The radio frequency radiator structure comprises a dielectric substrate and an antenna structure, the dielectric substrate is enclosed to form an accommodating cavity, and the accommodating cavity is used for accommodating a heated medium; the antenna structure is fixed on the inner surface of the dielectric substrate, a slot area is arranged in the antenna structure, the antenna structure is provided with an opening, and the opening is connected with the slot area; the antenna structure is used for receiving power signals so as to form high field intensity distribution in the gap area. The antenna structure and the inner surface of the dielectric substrate are conformal, the antenna structure is provided with a gap area, high field intensity distribution in the gap area is achieved, a high-frequency electric field is restrained in a heated medium, and the heating effect of the heated medium is improved; the structure is simplified and the cost is reduced.

Description

Technical Field

[0001] The utility model 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

[0002] With the rapid development of heat-not-burn aerosol generating devices, the types of heat-not-burn aerosol generating devices are becoming more and more diversified. According to the principle of aerosol generation, they can be mainly divided into resistive, ultrasonic, infrared, electromagnetic, radio frequency and other 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. Since 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 easy to leak, resulting in excessive energy consumption, and there will also be health risks of electromagnetic radiation. Utility Model Content

[0003] The technical purpose of the utility model is to provide a radio frequency radiator structure and an aerosol generating device, aiming to solve the technical problems of radio frequency aerosol generating devices in the related art, such as easy leakage of radio frequency energy, excessive energy consumption, and potential health risks of electromagnetic radiation.

[0004] In order to solve the above technical problems, the utility model is implemented as follows: a radio frequency radiator structure is used for an aerosol generating device, 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, 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 the power signal to form a high field strength distribution in the gap area.

[0005] Further, the antenna structure includes a main body and two connecting parts, 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 there is a first gap between the two connecting parts along the axial direction of the receiving cavity; the two connecting parts have a first end and a second end; and the two second ends are located between the two first ends; in the same connecting part, the first end is connected to the main body, and there is a second gap between the second end and the main body along the circumference of the receiving cavity, and there is a third gap between the first end and the second end 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.

[0006] Furthermore, the two connecting parts are symmetrically arranged.

[0007] Further, 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.

[0008] Furthermore, the third gap is curved or rectangular.

[0009] Further, in the same connecting portion, the second end portion is parallel to the first end portion, and the first end portion is vertically connected to the end of the main body portion.

[0010] Furthermore, the antenna structure is in a sheet shape, and a radial distance between the antenna structure and the heated medium is 0-3 mm.

[0011] Furthermore, the dielectric substrate can rotate in a circumferential direction so that the antenna structure and the heated medium can rotate relative to each other.

[0012] Furthermore, 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.

[0013] Furthermore, the RF radiator structure also includes a microstrip feeding structure, which is in the shape of a sheet and is constructed 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 wall of the dielectric substrate. The antenna structure receives a power signal through the microstrip feeding structure.

[0014] Furthermore, the radio frequency radiator structure also includes a zero potential reference piece, and the zero potential reference piece is fixed to the outer side of the dielectric substrate.

[0015] Furthermore, it includes a signal generating component and the radio frequency radiator structure as described above, wherein the signal generating component is used to generate a power signal.

[0016] Compared with the related art, the radio frequency radiator structure and aerosol generating device in the utility model have the following beneficial effects:

[0017] In the utility model, the radio frequency radiator structure receives the power signal generated by the signal generating component through the antenna structure. Since the antenna structure is fixed to the inner side wall of the dielectric substrate, a high-frequency electric field can be formed in the receiving cavity formed by the dielectric substrate through the coupling of the antenna structure and the dielectric substrate, so that the heated medium contained in the receiving cavity can be heated by the dielectric heating principle to generate an aerosol. In addition, the antenna structure is in the form of a sheet. Since the antenna structure is fixed to the inner surface of the dielectric substrate, the antenna structure is configured to fit the inner surface of the dielectric substrate, so that the antenna structure and the dielectric substrate form a common configuration. Therefore, a high-frequency electric field and an effective resonant frequency can be provided in the receiving cavity formed by the dielectric substrate, and the high-frequency electric field can also be effectively confined in the receiving cavity, so as to confine the high-frequency electric field inside the heated medium, thereby improving the heating effect on the heated medium. Furthermore, since there is a gap area inside the antenna structure, and the antenna structure is provided with an opening, the opening and the gap area are connected, and the gap area extends along the axial direction of the receiving cavity, and / or part of the gap area extends along the circumferential direction of the receiving cavity, a high field strength distribution in the gap area can be achieved by a small supply power input, and the high-frequency electric field can be further confined inside the heated medium, thereby better achieving the heating of the heated medium. Since the high-frequency electric field can be well confined inside the heated medium, the technical problems of easy leakage of radio frequency energy and the existence of electromagnetic radiation health hazards can be effectively solved, and there is no need to add an external metal cavity as a shielding cavity, which can simplify the structure and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the radio frequency radiator structure in an embodiment of the utility model;

[0020] Figure 2 is an exploded view of the radio frequency radiator structure in an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic 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 conform to each other in the embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the antenna structure, microstrip feeding structure and dielectric substrate in the embodiment of the utility model when the antenna structure and the microstrip feeding structure are connected after the antenna structure, microstrip feeding structure and dielectric substrate are conformal (the dielectric substrate is omitted);

[0023] Figure 5 It is a schematic diagram of the resonant frequency of the radio frequency radiator structure in the embodiment of the utility model.

[0024] In the accompanying drawings, each figure mark represents: 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

[0025] The embodiments of the utility model are described in detail below, and 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 utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] See also Figure 1-4The embodiment of the utility model provides a radio frequency radiator structure for an aerosol generating device, the aerosol generating device includes a signal generating component, 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 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 antenna structure 2 has a gap area 20 inside, the antenna structure 2 is provided with an opening, and the opening 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.

[0029] In the embodiment of the utility model, the radio frequency radiator structure receives the power signal generated by the signal generating component through the antenna structure 2, and through the coupling between the antenna structure 2 and the dielectric substrate 1, a high-frequency electric field can be formed in the receiving cavity 10 enclosed by the dielectric substrate 1, so that the heated medium 3 contained in the receiving cavity 10 can be heated by the dielectric heating principle to generate aerosol. In addition, since 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, so that a high-frequency electric field and an effective resonant frequency can be provided in the receiving cavity 10 enclosed by the dielectric substrate 1, and the high-frequency electric field can be effectively confined in the receiving cavity 10, so that the high-frequency electric field is confined inside the heated medium 3, thereby improving the heating effect on the heated medium 3. In addition, since the antenna structure 2 has a gap area 20 inside, and the antenna structure 2 is provided with an opening, and the opening is connected to the gap area 20, a high field strength distribution in the gap area 20 can be achieved by a small supply power input, and the high-frequency electric field can be further confined inside the heated medium 3, thereby better achieving the 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 health risks of electromagnetic radiation can be effectively solved. There is no need for an external metal cavity as a shielding cavity, which can simplify the structure and reduce costs.

[0030] It is worth noting that the dielectric substrate 1 can be used to support and fix the antenna structure 2. Furthermore, the dielectric substrate can use the dielectric substrate 1 material of the common high-frequency PCB board, such as Rogers 3003, Rogers 4003, etc., and select materials with different relative dielectric constants and loss tangents according to the electric field constraint and coupling effect. The dielectric substrate 1 can be single-layer or multi-layer. In some embodiments, the antenna structure 2 is copper-clad, and the antenna structure 2 can be etched on the dielectric substrate 1.

[0031] It can be understood that the antenna structure 2 is fixed to the inner surface of the dielectric substrate 1, so that the antenna structure 2 and the dielectric substrate 1 form a common configuration, that is, the antenna structure 2 and the dielectric substrate 1 are conformally designed. For example, the dielectric substrate 1 is cylindrical, the antenna structure 2 is attached to the inner surface of the dielectric substrate 1, and the antenna structure 2 can be configured in an arc shape to form a common configuration with the dielectric substrate 1.

[0032] It should be noted that 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 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°-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 that the extension direction of the gap area 20 and the axial direction of the receiving cavity 10 have a certain angle.

[0033] Furthermore, the heated medium 3 can select a solid aerosol generating medium (such as HNB cigarettes) with polar molecules and a liquid aerosol generating medium or an aerosol medium containing polar molecules, such as cigarette oil or aerosol generated after heating cigarette oil, according to its own relative dielectric constant and loss tangent, and according to the basic principle of dielectric heating. The shape of the heated medium 3 and the shape of the internal medium can be changed according to the concentrated position of the electric field; or when the heated medium 3 is solid, the material distribution inside the heated medium 3, such as the distribution of internal particles, can be changed, so that the heated medium 3 can be fully heated in the high-frequency electric field.

[0034] 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.

[0035] Specifically, the main body 21 and the two connecting parts 22 are connected so that the gap area 20 is a T-shaped hollow area.

[0036] In some embodiments, when the antenna structure 2 is conformal to the dielectric substrate 1, the antenna structure 2 can be horizontally arranged on the inner surface of the dielectric substrate 1, so that the main body 21 in the antenna structure 2 is parallel to the axial direction of the receiving cavity 10, and the two connecting parts 22 are parallel to the circumferential direction of the receiving cavity 10. After the main body 21 and the connecting part 22 receive the power signal, a high-frequency electric field can be formed in the receiving cavity 10 by coupling with the dielectric substrate 1. In addition, since the main body 21 and the connecting part 22 are conformal to the inner surface of the dielectric substrate 1, a high-frequency electric field and an effective resonant frequency can be provided in the receiving cavity 10, and the high-frequency electric field can be effectively confined in 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. Furthermore, the two connecting parts 22 are arranged at intervals, so that there is a first gap 201 between the two connecting parts 22. There is a first second gap 202 between the second end 222 corresponding to one of the connecting parts 22 and the main body 21; there is a second second gap 202 between the second end 222 corresponding to the other connecting part 22 and the main body 21. One of the first ends 221 and the corresponding second end 222 is spaced apart, and there is a first third gap 203; the other first end 221 and the corresponding second end 222 are spaced apart, and there is 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 area 20. After the main body 21 and the connecting part 22 receive a power signal, by coupling with the dielectric substrate 1, a high field strength distribution can be better formed in the first gap 201, the two second gaps 202, and the two third gaps 203, which can further improve the heating effect on the heated medium 3.

[0037] In some 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 in 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°-20°

[0038] It is understandable that in other embodiments, the gap area is not limited to the T-shaped hollow area, and the antenna structure 2 can be designed to form more gap areas 20 according to actual needs to meet high field strength distribution.

[0039] Furthermore, in some embodiments, the two connecting portions 22 are symmetrically arranged.

[0040] Specifically, the two connecting portions 22 are symmetrically arranged, so that the two second gaps 202 are symmetrical, and the two third gaps 203 are symmetrical. The two connecting portions 22 are arranged at intervals along the axial direction of the receiving cavity 10, so that when the antenna structure 2 and the dielectric substrate 1 are coupled, a symmetrical high-frequency electric field can be formed along the axial direction of the receiving cavity 10 through the two symmetrical second gaps 202 and the two symmetrical third gaps 203.

[0041] In some embodiments, the two connecting parts 22 may be arranged asymmetrically. For example, the second end 222 of one connecting part 22 may extend axially from the receiving cavity 10 longer than the second end 222 of the other connecting part 22; and / or the second gap 202 of one connecting part 22 may be longer than the second gap 202 of the other connecting part 22.

[0042] 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 .

[0043] Specifically, in the antenna structure 2, along the axial direction of the receiving cavity 10, the two second ends 222 are both located between the two first ends 221. In the same connecting portion 22, the extension length of the second end 222 along the axial direction of the receiving cavity 10 is greater than the extension length of the first end 221 along the axial direction of the receiving cavity 10, that is, the middle part 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 another second end 222, a second gap 202 with the main body 21, and a third gap 203 with the corresponding first end 221, that is, the gap area 20 is mainly formed on the peripheral side of the second end 222. When the antenna structure 2 is coupled with the dielectric substrate 1, by changing the extension area of ​​the second end 222 in the axial direction of the receiving cavity 10, the distribution of the high-frequency electric field can be adjusted, and the sizes of the first gap 201, the second gap 202 and the third gap 203 in the gap area 20 can also be changed. 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.

[0044] Furthermore, the third gap 203 is curved or rectangular.

[0045] Specifically, in 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 conformal, the first end 221 and the second end 222 may be rectangular, and the first end 221 and the second end 222 are parallel, so that a rectangular third gap 203 may be formed. In some other embodiments, before the antenna structure 2 and the dielectric substrate 1 are not conformal, the first end 221 and / or the second end 222 may be curved, so as to form a curved third gap 203. For example, the first end 221 may be curved toward a side away from the second end 222, while the second end 222 is rectangular, or the first end 221 is curved toward a side away from the second end 222, while the second end 222 is curved toward a side away from the first end 221; or the first end 221 is curved toward a side away from the second end 222, while the second end 222 is curved toward a side close to the first end 221; etc., all of which can make the third gap 203 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.

[0046] Further, 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 .

[0047] 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, and one of the second ends 222 is connected to the top position of the main body 21, and the other second end 222 is connected to the bottom position of the main body 21, so that the gap area 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 to form a T-shaped gap area 20.

[0048] Furthermore, the radial distance between the antenna structure 2 and the heated medium 3 is 0-3 mm.

[0049] Specifically, the antenna structure 2 is in a sheet shape, the antenna structure 2 is fixed to the inner surface of the dielectric substrate 1, and the heated medium 3 is contained in the containing cavity 10, that is, located inside the dielectric substrate 1. A small gap may exist between the heated medium 3 and the antenna structure 2, and 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, 3.0 mm.

[0050] 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.

[0051] Specifically, the dielectric substrate 1 and the heated medium 3 are both cylindrical structures. Since there is a small gap between the heated medium 3 and the antenna structure 2, and the antenna structure 2 is fixed to the inner side wall of the dielectric substrate 1, plus the thickness of the antenna structure 2, there is also a gap between the inner side wall of the dielectric substrate 1 and the heated medium 3. Therefore, in practical applications, the heated medium 3 can be kept stationary, and the heated medium 3 and the dielectric substrate 1 can be rotated relative to each other by rotating the dielectric substrate 1, thereby realizing the relative rotation of the heated medium 3 and the antenna structure 2 fixed to the dielectric substrate 1. In the process of heating the heated medium 3, if the heated medium 3 and the antenna structure 2 are always relatively stationary, the heat will be more concentrated, and in the embodiment of the utility model, the antenna structure 2 and the heated medium 3 can be relatively rotated, so that the heated medium 3 can be uniformly heated. It can be understood that the dielectric substrate 1 can be kept stationary and the heated medium 3 can be rotated so that the two can rotate relative to each other.

[0052] 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 10.8-19 mm.

[0053] Specifically, the antenna structure 2 can be copper-clad, and the axial extension length of the antenna structure 2 to 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 practical applications, after the antenna structure 2 conforms, the extension width of the antenna structure 2 to the circumference of the receiving cavity 10 is adaptively adjusted, so that the antenna structure 2 can operate in the range of 2.0-5.1 GHz. It can be understood that the larger the size of the antenna structure 2, the smaller the operating frequency; the smaller the size of the antenna structure 2, the larger the operating frequency.

[0054] In some specific embodiments, after the antenna structure 2 conforms to the shape, the axial extension length of the antenna structure 2 to the receiving cavity 10 is 16 mm, the circumferential extension width of the antenna structure 2 to the receiving cavity 10 is 12 mm, and the thickness of the antenna structure 2 is 0.035 mm. This configuration allows the antenna structure 2 to operate at 2.394 GHz. Figure 5 shown.

[0055] Furthermore, the size of the gap area 20 can be changed by changing the size of the internal structure of the antenna structure 2, such as changing the structural size of the main body 21 and the connecting part 22, so as to adjust the operating frequency of the antenna structure 2.

[0056] Furthermore, in some embodiments, the RF radiator structure also includes a microstrip feeding structure 4, which is in the shape of a sheet. The microstrip feeding structure 4 is configured to fit the inner surface of the dielectric substrate 1, and the microstrip feeding structure 4 is connected to one end of the antenna structure 2 and fixed to the inner wall of the dielectric substrate 1. The antenna structure 2 receives a power signal through the microstrip feeding structure 4.

[0057] Specifically, the microstrip feeding structure 4 can be integrally formed with the antenna structure 2, and then the two can be conformed to the inner surface of the dielectric substrate 1, and the two can be integrally arranged on the inner wall of the dielectric substrate 1. The microstrip feeding 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 feeding structure 4. Since the microstrip feeding structure 4 can be directly connected to the power signal, it is not necessary to rely on the SMA connector, and it is different from the coaxial insertion feeding structure, but 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 feeding structure 4 can be fixed to the inner surface of the dielectric substrate 1 together, thereby reducing the difficulty of assembly.

[0058] 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.

[0059] Furthermore, the radio frequency radiator structure further comprises a zero potential reference member 5, which is fixed to the outside of the dielectric substrate 1. The zero potential reference member 5 can be used as a reference zero potential connected to the ground plane of the signal generating component.

[0060] Furthermore, the antenna structure 2, the microstrip feeding structure 4 and the zero potential reference member 5 can be made of high conductivity materials, such as copper, aluminum, silver or gold, according to actual cost and impedance requirements. The resistivity is small, the conductivity is strong, and the structure is stable. Of course, in some other embodiments, alloy materials corresponding to metal materials such as copper, aluminum, silver, and gold can also be used, which is not limited here.

[0061] 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.

[0062] Specifically, the signal generating component may include a power supply and a radio frequency source. When used and started, the power supply and the radio frequency source are connected, and the DC signal is converted into a high-power radio frequency band electromagnetic wave signal through the radio frequency source. The high-power radio frequency band electromagnetic wave signal is input into the radio frequency radiator structure. The radio frequency radiator structure is coupled with the heated medium 3, an electric field distribution is generated 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 the high-frequency electric field can be effectively confined in 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.

[0063] Furthermore, in a specific embodiment, the power supply may be a solid-state DC source with an output voltage of 4 to 6V and a battery capacity of 1000 to 4000 mAH. The power range of the total output power signal of the RF source is about 15 to 40 W (about 42 to 46 dBm).

[0064] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] The above is a description of the technical solution provided by the utility model. For technicians in this field, according to the ideas of the embodiments of the utility model, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A radio frequency radiator structure, used in 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; characterized in that: 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, 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.

2. The radio frequency radiator structure according to claim 1, characterized in that: The antenna structure comprises 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 parts each have a first end and a second end; and the two second end parts are located between the two first end parts; in the same connecting part, the first end part is connected to the main body part, a second gap exists between the second end part and the main body part along the circumferential direction of the receiving cavity, and a third gap exists between the first end part and the second end part 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, characterized in that: The two connecting parts are symmetrically arranged.

4. The radio frequency radiator structure according to claim 2, characterized in that: 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, characterized in that: The third gap is curved or rectangular.

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

7. The radio frequency radiator structure according to claim 1, characterized in that: 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 6, characterized in that: 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, characterized in that: 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, characterized in that: The RF radiator structure also includes a microstrip feeding structure, which is in the shape of a sheet and is configured to fit 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, characterized in that: 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, characterized in that: It comprises a signal generating component and a radio frequency radiator structure as described in any one of claims 1 to 11, wherein the signal generating component is used to generate a power signal.

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