Aerosol Generating Device

Abstract

The present invention proposes an aerosol generating device, comprising: an atomizing chamber, the atomizing chamber is used to place an aerosol generating substrate; a microwave generating device, used to generate microwaves; a heating element, arranged in the atomizing chamber and capable of being inserted into the aerosol generating substrate, the heating element comprising: an introduction structure, electrically connected to the microwave generating device; an absorbing structure, arranged on the introduction structure, the absorbing structure can generate heat under the action of microwaves; a conductive structure, arranged on the absorbing structure. The structure of the heating element of the present invention is improved so that most of the microwaves are absorbed by the absorbing structure, the absorbing structure absorbs the microwaves and generates heat, and can achieve uniform heating of the aerosol generating substrate, and avoid dirt or residue on the aerosol generating substrate.

Description

Technical Field

[0001] The present invention relates to the technical field of aerosols, and in particular to an aerosol generating device. Background Art

[0002] In the related art, the aerosol generating device uses resistive heating conduction to heat the aerosol generating substrate, but the part of the aerosol generating substrate close to the resistive heating element is heated faster, and the heating efficiency of the part of the aerosol generating substrate far from the resistive heating element is low, making it difficult to form an aerosol.

[0003] In addition, the temperature of the aerosol generating substrate close to the resistance heating element is higher, which is easy to produce dirt or residue. Dirt or residue adheres to the surface of the resistance heating element, which is not only difficult to clean, but also affects the heating effect of the resistance heating element on the aerosol generating substrate. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, the present invention provides an aerosol generating device.

[0006] The present invention proposes an aerosol generating device, comprising: an atomizing chamber, the atomizing chamber is used to place an aerosol generating matrix; a microwave generating device, used to generate microwaves; a heating element, arranged in the atomizing chamber and capable of being inserted into the aerosol generating matrix, the heating element comprising: an introduction structure, electrically connected to the microwave generating device; an absorbing structure, arranged on the introduction structure, the absorbing structure can generate heat under the action of microwaves; and a conductive structure, arranged on the absorbing structure.

[0007] The aerosol generating device proposed by the present invention comprises an atomizing chamber, a microwave generating device and a heating element. At least part of the aerosol generating substrate is located in the atomizing chamber and generates aerosol when heated. The microwave generating device can generate microwaves during operation; the heating element is arranged in the atomizing chamber and inserted into the aerosol generating substrate during use.

[0008] In particular, the heating element includes an introduction structure, an absorbing structure and a conductive structure. The introduction structure is connected to the microwave generator, and the introduction structure can conduct the microwaves generated by the microwave generator into the atomization cavity; the introduction structure and the conductive structure are both arranged on the absorbing structure, and after the microwaves enter the atomization cavity, most of the microwaves will be conducted toward the conductive structure; in the process of microwave conduction, most of the microwaves will be absorbed by the absorbing structure; the absorbing structure will generate heat after absorbing the microwaves, thereby heating the aerosol generating matrix.

[0009] In particular, the aerosol generating device proposed by the present invention heats the aerosol generating substrate in the form of microwaves, which can achieve rapid heating of the aerosol generating substrate. In addition, the present invention improves the structure of the heating element so that most of the microwaves are absorbed by the wave absorbing structure. During the operation of the aerosol generating device, the wave absorbing structure absorbs the microwaves and generates heat, and the introduction structure and the conductive structure generate heat under the action of heat conduction, thereby allowing the heating element to heat the aerosol generating substrate as a whole.

[0010] Furthermore, in the aerosol generating device proposed by the present invention, the wave-absorbing structure itself has a certain thickness and volume, and the wave-absorbing structure occupies the vast majority of the volume ratio of the heating element. In this way, compared with the heating method of setting a resistor at the end used in the related art, the present invention can ensure that the working temperature of the heating element is appropriate, and thus the local temperature of the heating element will not be too high. In this way, on the one hand, uniform heating of the aerosol generating matrix can be achieved, and on the other hand, dirt or residue can be avoided from appearing on the aerosol generating matrix, so that dirt or residue can be prevented from adhering to and depositing on the surface of the resistive heating element, thereby ensuring the cleanliness of the surface of the heating element.

[0011] Therefore, the aerosol generating device proposed in the present invention improves the structure of the heating element. After introducing microwaves into the atomization chamber through the introduction structure, the distribution of the microwaves in the atomization chamber is intervened by the conductive structure, so that most of the microwaves are absorbed by the absorbing structure, and then the aerosol generating matrix is ​​heated by the heated absorbing structure, thereby achieving efficient and uniform heating of the aerosol generating matrix.

[0012] In some possible designs, the conductive structure and the introduction structure are located on opposite sides of the absorbing structure.

[0013] In this design, the conductive structure and the introduction structure are located on opposite sides of the absorbing structure, realizing a three-layer design of the heating element. Among them, the first layer is the introduction structure, the second layer is the absorbing structure, and the third layer is the conductive structure. In this way, during the operation of the aerosol generating device, most of the microwaves introduced into the atomization cavity by the introduction structure are transmitted toward the conductive structure through the absorbing structure and are absorbed by the absorbing structure during the transmission process.

[0014] That is, the present invention optimizes the positions of the introduction structure, the absorbing structure and the conductive structure, so that more microwaves can be absorbed by the absorbing structure, thereby improving the utilization rate of microwaves and ensuring that the heating element efficiently and uniformly heats the aerosol generating matrix.

[0015] In this design, further, part of the microwaves not absorbed by the absorbing structure can be absorbed by the aerosol generating matrix, thereby assisting in heating the aerosol generating matrix.

[0016] In some possible designs, the heating element is a heating sheet, and the introduction structure, the wave absorbing structure and the conductive structure are distributed along the thickness direction of the heating sheet.

[0017] In this design, the heating element is a heating sheet, and the heating element as a whole is a sheet-like structure. In addition, the introduction structure, the wave absorbing structure, and the conductive structure are also sheet-like structures and are distributed along the thickness direction of the heating sheet. Setting the heating element as a heating sheet is conducive to simplifying the structure of the heating element and facilitating the insertion of the heating element into the interior of the aerosol generating matrix.

[0018] In some possible designs, the introduction structure includes an introduction layer; the conductive structure includes a conductive layer; and the absorbing structure includes an absorbing layer.

[0019] In this design, the introduction structure includes an introduction layer. The shape and thickness of the introduction layer can be designed according to actual conditions, but the impedance of the introduction layer must match the impedance of the output end of the microwave generator to minimize the attenuation of microwaves during conduction and ensure that microwaves can be efficiently conducted from the output end of the microwave generator to the introduction structure.

[0020] In this design, the conductive structure includes a conductive layer, the absorbing structure includes an absorbing layer, and the structures of the conductive layer and the absorbing layer are matched. In this way, during the operation of the aerosol generating device, the conductive layer affects the magnetic field distribution in the atomization cavity, so that most of the microwaves are absorbed by the absorbing layer, and the absorbing area of ​​the absorbing layer for microwaves is guaranteed, thereby improving the utilization rate of microwaves.

[0021] In some possible designs, the conductive layer is a metal layer; and / or the area of ​​the conductive layer is greater than or equal to the area of ​​the absorbing layer.

[0022] In this design, the conductive layer can be made of metal material, and the area of ​​the conductive layer is greater than or equal to the area of ​​the absorbing layer, so that the conductive layer can completely wrap one side of the absorbing layer, so that the microwaves are absorbed by the absorbing layer to the greatest extent, reducing the waste of microwaves.

[0023] In some possible designs, the absorbing structure includes at least one of the following: a silicon carbide structure, a zinc oxide structure, or a ferrite structure.

[0024] In this design, the absorbing structure can be made of a material with a large dielectric loss. For example, silicon carbide and zinc oxide are materials with a large dielectric loss. Therefore, the use of silicon carbide or zinc oxide can enhance the ability of the absorbing structure to absorb microwaves and improve the heating effect on the aerosol generating matrix.

[0025] In this design, the absorbing structure can be made of materials with large magnetic loss. For example, magnetic materials such as ferrite are materials with large magnetic loss. Therefore, the use of magnetic materials such as ferrite can enhance the ability of the absorbing structure to absorb microwaves and improve the heating effect on the aerosol generating matrix.

[0026] In some possible designs, the absorbing structure includes a microstrip line, and one end of the microstrip line is connected to the microwave generating device.

[0027] In this design, the absorbing structure includes a microstrip line. The impedance of the microstrip line matches the impedance of the output end of the microwave generating circuit, and one end of the microstrip line is connected to the microwave generating device. In this way, the loss of microwaves when they are transmitted between the output end of the microwave generating circuit and the microstrip line can be minimized, so that the microstrip line can transmit microwaves more efficiently, thereby improving the utilization rate of microwaves.

[0028] In some possible designs, at least a portion of the microstrip line is in a curved shape; and / or at least a portion of the microstrip line is in a straight line shape.

[0029] In this design, when the microstrip line is installed, it can be set according to the actual situation so that the microstrip line is distributed in a pattern. Specifically, a part of the microstrip line can be installed in a straight line, and a part of the microstrip line can be installed in a curved way. Therefore, the present invention can adjust the installation position of the microstrip line to perform different magnetic field designs, so that the distribution of the high-temperature part on the heating element is more uniform, so as to uniformly and efficiently heat the aerosol generating matrix.

[0030] In some possible designs, the heating element is disposed in the middle of the atomization chamber and has a distance from the side wall of the atomization chamber.

[0031] In this design, the heating element is installed in the middle of the atomization chamber and has a sufficient distance from the edge of the atomization chamber. Therefore, the heating element can be inserted into the middle of the aerosol generating substrate, which allows the aerosol generating substrate to easily enter the atomization chamber and easily leave the atomization chamber. On the other hand, the heating element can heat the middle of the aerosol generating substrate, thereby achieving uniform heating of the aerosol generating substrate.

[0032] In some possible designs, the first end of the heating element is arranged on the bottom wall of the atomization chamber, and the second end of the heating element is provided with an insertion portion.

[0033] In this design, the first end of the heating element is mounted on the bottom wall of the atomizing chamber to fix the position of the heating element. The second end of the heating element is provided with an insertion portion, which can be inserted into the heating element when the aerosol generating substrate is heated, and then fixed in the atomizing chamber without the need for external force to fix it. Therefore, the aerosol generating substrate can be inserted into the heating element when heated, without the need for manual fixation by the user, thereby increasing the convenience of heating. Specifically, the insertion portion can be set to a triangle to facilitate the insertion of the insertion portion into the hot aerosol generating substrate.

[0034] In some possible designs, the microwave generating device includes: a microwave generating circuit for generating microwaves; and a microwave transmission circuit electrically connected to the microwave generating circuit and the introduction structure.

[0035] In this design, the microwave generating device includes a microwave generating circuit and a microwave transmission circuit. The microwave generating device is used to generate microwaves, and the microwave transmission circuit is connected to the microwave generating device and the introduction structure respectively. Therefore, the microwave transmission circuit can transmit the microwaves generated by the microwave generating device to the introduction structure, and the introduction structure transmits the microwaves to the absorbing structure, and the absorbing structure can absorb the microwaves to generate heat, thereby heating the aerosol generating matrix.

[0036] In some possible designs, the return loss characteristic parameter of the microwave transmission circuit is less than or equal to -6db.

[0037] In this design, the return loss characteristic parameter of the microwave transmission circuit is generally less than or equal to -6db, so that the microwave transmission circuit can reduce the reflection loss during microwave transmission and transmit microwaves to the heating element more stably.

[0038] Furthermore, the return loss characteristic parameter of the microwave transmission circuit can be optimized to make the return loss characteristic parameter less than -10db, so that the microwave transmission circuit can further reduce the reflection loss.

[0039] Furthermore, the return loss characteristic parameter is optimized to less than -20db, so that the microwave reflection loss transmitted by the microwave transmission circuit is minimized, allowing the microwave transmission circuit to transmit more microwaves. Therefore, the microwaves that can be obtained by the absorbing structure make the temperature generated by the absorbing structure higher, thereby accelerating the heating rate of the heating element.

[0040] In some possible designs, the aerosol generating device further includes: a control circuit electrically connected to the microwave generating device; and a power supply device electrically connected to the control circuit and the microwave generating device.

[0041] In this design, the aerosol generating device further includes a control circuit and a power supply device. The control circuit is connected to the microwave generating device through a circuit to control the microwave generating device to generate microwaves. The power supply device provides power by being electrically connected to the control circuit and the microwave generating device respectively, so that the control circuit can control the microwave generating device to work and generate microwaves.

[0042] In some possible designs, the aerosol generating device also includes: a temperature detection device, which is arranged on the heating element and electrically connected to the control circuit; wherein the temperature detection device is used to detect the temperature of the heating element, and the control circuit can control the operation of the microwave generating device according to the detection result of the temperature detection device.

[0043] In this design, the aerosol generating device also includes a temperature detection device. The temperature detection device is installed on the heating element. Through the connection with the control circuit, the temperature detection device sends the detected temperature of the heating element to the control circuit at any time; the control circuit adjusts the operation of the microwave generating device according to the detection result of the temperature detection device to increase or decrease the generation of microwaves, thereby controlling the heating effect of the heating element. Specifically, the temperature detection device can be set on the conductive structure of the heating element.

[0044] Specifically, when the temperature of the heating element detected by the temperature detection device is too high, the control circuit will reduce the microwaves output by the microwave generating circuit, thereby reducing the microwaves absorbed by the absorbing structure and lowering the temperature reached by the absorbing structure, thereby achieving the purpose of weakening the heating effect of the heating element.

[0045] Specifically, when the temperature of the heating element detected by the temperature detection device is too low, the control circuit will increase the microwaves output by the microwave generating circuit, thereby increasing the microwaves absorbed by the absorbing structure. The absorbing structure can reach a higher temperature, thereby increasing the heating temperature of the aerosol generating matrix, so as to achieve the purpose of enhancing the heating effect of the heating element.

[0046] In some possible designs, the conductive structure is disconnected from the control circuit; or the conductive structure is electrically connected to the ground line of the control circuit.

[0047] In this design, the conductive structure may not be connected to the control circuit, making the conductive structure an open circuit design; or the conductive structure may be electrically connected to the ground wire of the control circuit, making the conductive structure a short circuit design.

[0048] In some possible designs, the aerosol generating device further includes: a shell, the shell includes an atomization cavity and an installation cavity, and the microwave generating device, the control circuit and the power supply device are arranged in the installation cavity.

[0049] In this design, the aerosol generating device further includes a housing. The housing includes an installation cavity and the above-mentioned atomization cavity. The microwave generating device, control circuit and power supply device of the aerosol generating device are all arranged in the installation cavity to ensure the stable installation of the microwave generating device, control circuit and power supply device, and at the same time provide a kind of protection for the microwave generating device, control circuit and power supply device.

[0050] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0052] Figure 1 is a schematic structural diagram of an aerosol generating device according to an embodiment of the present invention;

[0053] Figure 2 is a schematic structural diagram of a heating element in an aerosol generating device according to an embodiment of the present invention;

[0054] Figure 3 yes Figure 2 Schematic diagram of the local structure of the heating element shown.

[0055] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0056] 100 heating element, 102 introduction structure, 104 absorbing structure, 106 conductive structure, 108 insertion part, 202 atomization cavity, 204 temperature detection device, 206 microwave transmission circuit, 208 microwave generating circuit, 210 microwave generating device, 212 control circuit, 214 shell, 216 power supply device, 218 installation cavity, 300 aerosol generating matrix. DETAILED DESCRIPTION

[0057] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0058] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0059] Refer to the following Figures 1 to 3 The aerosol generating device provided according to some embodiments of the present invention is described.

[0060] like Figure 1 As shown, the first embodiment of the present invention provides an aerosol generating device, including an atomizing chamber 202, a microwave generating device 210 and a heating element 100. At least part of the aerosol generating substrate 300 is located in the atomizing chamber 202, and generates aerosol when heated. The microwave generating device 210 can generate microwaves during operation; the heating element 100 is disposed in the atomizing chamber 202, and is inserted into the aerosol generating substrate 300 during use.

[0061] In particular, if Figure 2 and Figure 3 As shown, the heating element 100 includes an introduction structure 102, an absorbing structure 104 and a conductive structure 106. The introduction structure 102 is connected to the microwave generator 210, and the introduction structure 102 can conduct the microwaves generated by the microwave generator 210 into the atomizing cavity 202; the introduction structure 102 and the conductive structure 106 are both arranged on the absorbing structure 104, and after the microwaves enter the atomizing cavity 202, most of the microwaves will be conducted toward the side of the conductive structure 106; in the process of microwave conduction, most of the microwaves will be absorbed by the absorbing structure 104; the absorbing structure 104 will generate heat after absorbing the microwaves, thereby heating the aerosol generating matrix 300.

[0062] In particular, if Figure 1 As shown, the aerosol generating device proposed in the present invention heats the aerosol generating substrate 300 in the form of microwaves, and can achieve rapid heating of the aerosol generating substrate 300. In addition, the present invention improves the structure of the heating element 100, so that most of the microwaves are absorbed by the absorbing structure 104. During the operation of the aerosol generating device, the absorbing structure 104 absorbs the microwaves and generates heat, and the introduction structure 102 and the conductive structure 106 generate heat under the action of heat conduction, thereby allowing the heating element 100 to heat the aerosol generating substrate 300 as a whole.

[0063] Furthermore, if Figure 3 As shown, in the aerosol generating device proposed by the present invention, the wave absorbing structure 104 itself has a certain thickness and volume, and the wave absorbing structure 104 occupies the vast majority of the volume ratio of the heating element 100. In this way, compared with the heating method of setting a resistor at the end adopted in the related art, the present invention can ensure that the working temperature of the heating element 100 is appropriate, and thus the local temperature of the heating element 100 will not be too high. In this way, on the one hand, uniform heating of the aerosol generating matrix 300 can be achieved, and on the other hand, dirt or residue can be avoided from appearing on the aerosol generating matrix 300, so that dirt or residue can be prevented from adhering to and depositing on the surface of the heating element 100, thereby ensuring the cleanliness of the surface of the heating element 100.

[0064] Therefore, the aerosol generating device proposed in the present invention improves the structure of the heating element 100. After introducing the microwave into the atomization chamber 202 through the introduction structure 102, the distribution of the microwave in the atomization chamber 202 is intervened by the conductive structure 106, so that most of the microwave is absorbed by the absorbing structure 104, and then the aerosol generating matrix 300 is heated by the heated absorbing structure 104, thereby achieving efficient and uniform heating of the aerosol generating matrix 300.

[0065] The second embodiment of the present invention provides an aerosol generating device, which further comprises:

[0066] like Figure 2 and Figure 3 As shown, the conductive structure 106 and the introduction structure 102 are located on opposite sides of the wave absorbing structure 104, realizing a three-layer design of the heating element 100. The first layer is the introduction structure 102, the second layer is the wave absorbing structure 104, and the third layer is the conductive structure 106. In this way, during the operation of the aerosol generating device, most of the microwaves introduced into the atomizing chamber 202 by the introduction structure 102 are conducted toward the conductive structure 106 through the wave absorbing structure 104, and are absorbed by the wave absorbing structure 104 during the conduction process.

[0067] The present invention optimizes the positions of the introduction structure 102, the absorbing structure 104, and the conductive structure 106, so that more microwaves can be absorbed by the absorbing structure 104, thereby improving the utilization rate of microwaves and ensuring that the heating element 100 efficiently and uniformly heats the aerosol generating substrate 300. Furthermore, part of the microwaves that are not absorbed by the absorbing structure 104 can be absorbed by the aerosol generating substrate 300, thereby assisting in heating the aerosol generating substrate 300.

[0068] Specifically, the conductive structure 106 can change the distribution of the magnetic field in the atomization chamber 202, thereby causing most of the microwaves to be conducted toward the location of the conductive structure 106 and absorbed by the absorbing structure 104 during the conduction process, thereby achieving efficient use of the microwaves.

[0069] In this embodiment, further, Figure 2 and Figure 3 As shown, the heating element 100 is a heating sheet, and the introduction structure 102, the wave absorbing structure 104 and the conductive structure 106 are distributed along the thickness direction of the heating sheet. In addition, the heating element 100 is a heating sheet, and the heating element 100 as a whole is a sheet-like structure. The introduction structure 102, the wave absorbing structure 104 and the conductive structure 106 are also sheet-like structures and are distributed along the thickness direction of the heating sheet. Setting the heating element 100 as a heating sheet is conducive to simplifying the structure of the heating element 100 and facilitating the insertion of the heating element 100 into the interior of the aerosol generating matrix 300.

[0070] In this embodiment, further, Figure 2 and Figure 3 As shown, the introduction structure 102 includes an introduction layer. The shape and thickness of the introduction layer can be designed according to actual conditions, but the impedance of the introduction layer must match the impedance of the output end of the microwave generator 210 to minimize the attenuation of microwaves during the conduction process and ensure that microwaves can be efficiently conducted from the output end of the microwave generator 210 to the introduction structure 102.

[0071] In this embodiment, further, Figure 2 and Figure 3 As shown, the conductive structure 106 includes a conductive layer, the absorbing structure 104 includes an absorbing layer, and the structures of the conductive layer and the absorbing layer are matched. In this way, during the operation of the aerosol generating device, the conductive layer affects the magnetic field distribution in the atomizing cavity 202, so that most of the microwaves are absorbed by the absorbing layer, and the absorbing area of ​​the absorbing layer for microwaves is guaranteed, thereby improving the utilization rate of microwaves.

[0072] In this embodiment, further, the conductive layer can be made of metal material, and the area of ​​the conductive layer is greater than or equal to the area of ​​the absorbing layer, so that the conductive layer can completely wrap one side of the absorbing layer, so that the microwaves are absorbed by the absorbing layer to the greatest extent, reducing the waste of microwaves.

[0073] In this embodiment, further, Figure 3 As shown, the thickness of the absorbing layer is greater than that of the introduction layer, and the thickness of the absorbing layer is greater than that of the conductive layer. In this way, the absorbing layer is ensured to occupy a sufficient structure of the heating element 100, which is conducive to further improving the uniform heating of the aerosol generating substrate 300 by the heating element 100.

[0074] Specifically, in this embodiment, Figure 3 As shown, the wave-absorbing layer has a certain thickness (which can be set according to actual conditions, for example, designed according to the size of the atomization chamber 202 and the size of the aerosol generating base) to ensure that the volume of the portion of the heating element 100 that can generate heat is large enough to achieve uniform heating of the aerosol generating matrix 300 (especially compared to the end resistance heating method in the related art).

[0075] Specifically, in this embodiment, Figure 3 As shown, the conductive layer has a certain thickness (the thickness of the conductive layer must exceed the skin depth of the conductive layer). In addition, the shape of the conductive layer is substantially consistent with the shape of the absorbing layer, and the area of ​​the conductive layer can be larger than the area of ​​the absorbing layer. In this way, during the operation of the aerosol generating device, it can be ensured that each position of the absorbing layer can directly absorb microwaves, thereby achieving uniform heating of the absorbing layer itself, thereby ensuring uniform heating of the aerosol generation base.

[0076] The third embodiment of the present invention provides an aerosol generating device, which is based on the first and second embodiments and further comprises:

[0077] On the one hand, the absorbing structure 104 can be made of a material with a large dielectric loss. For example, silicon carbide and zinc oxide are materials with a large dielectric loss. Therefore, using silicon carbide or zinc oxide can enhance the ability of the absorbing structure 104 to absorb microwaves and improve the heating effect on the aerosol generating matrix 300.

[0078] On the other hand, the absorbing structure 104 can be made of a material with a large magnetic loss. For example, a magnetic material such as ferrite is a material with a large magnetic loss. Therefore, the use of a magnetic material such as ferrite can enhance the ability of the absorbing structure 104 to absorb microwaves and improve the heating effect on the aerosol generating matrix 300.

[0079] The fourth embodiment of the present invention provides an aerosol generating device, which is based on the first embodiment, the second embodiment and the third embodiment, and further comprises:

[0080] like Figure 2 As shown, the absorbing structure 104 includes a microstrip line. The impedance of the microstrip line matches the impedance of the output end of the microwave generating circuit 208, and one end of the microstrip line is connected to the microwave generating device 210. In this way, the loss of microwaves when they are transmitted between the output end of the microwave generating circuit 208 and the microstrip line can be minimized, so that the microstrip line can transmit microwaves more efficiently, thereby improving the utilization rate of microwaves.

[0081] In this embodiment, further, Figure 2 As shown, when the microstrip line is installed, it can be set according to the actual situation so that the microstrip line is distributed in a pattern. Specifically, a part of the microstrip line can be installed in a straight line, and a part of the microstrip line can also be installed in a curved manner. Therefore, the present invention can adjust the installation position of the microstrip line to perform different magnetic field designs, so that the distribution of the high-temperature part on the heating element 100 is more uniform, so as to uniformly and efficiently heat the aerosol generating matrix 300.

[0082] Specifically, in this embodiment, Figure 3 As shown, the microstrip line has a certain thickness and shape, and the microstrip line is a metal line, and the microstrip line can be used as a charging antenna during use. In addition, the impedance of the microstrip line matches the impedance of the output end of the microwave generating circuit 208 (for example, 50 ohms can be selected, which can be designed according to actual conditions). In this way, the loss of microwaves can be minimized during the process of microwaves being transmitted from the output end of the microwave generating circuit 208 to the microstrip line. On the basis of ensuring the smooth transmission of microwaves, the transmission efficiency of microwaves between the output end of the microwave generating circuit 208 and the microstrip line is improved, and the utilization rate of microwaves is improved.

[0083] The fifth embodiment of the present invention provides an aerosol generating device, which is based on the first embodiment, the second embodiment, the third embodiment and the fourth embodiment, and further comprises:

[0084] like Figure 1 As shown, the heating element 100 is installed in the middle of the atomizing chamber 202 and has a sufficient distance from the edge of the atomizing chamber 202. Therefore, the heating element 100 can be inserted into the middle of the aerosol generating substrate 300, which allows the aerosol generating substrate 300 to easily enter the atomizing chamber 202 and also to easily leave the atomizing chamber 202. On the other hand, the heating element 100 can heat the middle of the aerosol generating substrate 300, thereby achieving uniform heating of the aerosol generating substrate 300.

[0085] In this embodiment, further, Figure 1 As shown, the first end of the heating element 100 is mounted on the bottom wall of the atomizing chamber 202 to fix the position of the heating element 100. The second end of the heating element 100 is provided with an insertion portion 108, which can be inserted into the heating element 100 when the aerosol generating substrate 300 is heated, and then fixed in the atomizing chamber 202, without the need for external force to fix. Therefore, the aerosol generating substrate 300 can be inserted into the heating element 100 when heated, without the need for manual fixation by the user, thereby increasing the convenience of heating.

[0086] Specifically, the inserting portion 108 may be configured in a triangular shape to facilitate insertion of the inserting portion 108 into the hot aerosol generating substrate 300 .

[0087] The sixth embodiment of the present invention provides an aerosol generating device, which is based on the first embodiment, the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment, and further comprises:

[0088] like Figure 1 As shown, the microwave generating device 210 includes a microwave generating circuit 208 and a microwave transmission circuit 206. The microwave generating device 210 is used to generate microwaves, and the microwave transmission circuit 206 is respectively connected to the microwave generating device 210 and the introduction structure 102. Therefore, the microwave transmission circuit 206 can transmit the microwaves generated by the microwave generating device 210 to the introduction structure 102, and the introduction structure 102 transmits the microwaves to the absorbing structure 104, and the absorbing structure 104 can absorb the microwaves to generate heat, thereby heating the aerosol generating substrate 300.

[0089] Specifically, in this embodiment, Figure 1As shown, the microwave generating circuit 208 may include a signal source and a PA amplifying circuit, which will not be discussed in detail. In addition, the maximum power of the microwave generating circuit 208 is 1W to 20W; preferably, the maximum power of the microwave generating circuit 208 is selected to be 10W to 15W.

[0090] In this embodiment, further, Figure 1 As shown, the return loss characteristic parameter S11 of the microwave transmission circuit 206 is generally less than or equal to -6db, so that the microwave transmission circuit 206 can reduce the reflection loss during microwave transmission and transmit microwaves to the heating element more stably.

[0091] Furthermore, the return loss characteristic parameter S11 of the microwave transmission circuit 206 may be optimized to make the return loss characteristic parameter less than -10 db, so that the microwave transmission circuit 206 can further reduce reflection loss.

[0092] Furthermore, the return loss characteristic parameter S11 is optimized to less than -20db, so that the microwave reflection loss transmitted by the microwave transmission circuit 206 is minimized, so that the microwave transmission circuit 206 can transmit more microwaves. Therefore, the microwaves that can be obtained by the absorbing structure 104 make the temperature generated by the absorbing structure 104 higher, thereby accelerating the heating speed of the heating element 100.

[0093] It should be noted here that the return loss characteristic parameter S11 in this embodiment refers to the ratio of the reflected echo energy to the incident wave energy. Those skilled in the art can understand this concept and will not be elaborated here.

[0094] The seventh embodiment of the present invention provides an aerosol generating device, which is further based on the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the sixth embodiment:

[0095] like Figure 1 As shown, the aerosol generating device further includes a control circuit 212 and a power supply device 216. The control circuit 212 is connected to the microwave generating device 210 through a circuit to control the microwave generating device 210 to generate microwaves. The power supply device 216 is electrically connected to the control circuit 212 and the microwave generating device 210 to provide power, so that the control circuit 212 can control the microwave generating device 210 to work and generate microwaves.

[0096] In this embodiment, further, Figure 1As shown, the aerosol generating device further includes a temperature detection device 204. The temperature detection device 204 is mounted on the heating element 100. By connecting with the control circuit 212, the temperature detection device 204 sends the detected temperature of the heating element 100 to the control circuit 212 at any time; the control circuit 212 adjusts the operation of the microwave generating device 210 according to the detection result of the temperature detection device 204 to increase or decrease the generation of microwaves, thereby controlling the heating effect of the heating element 100. Specifically, the temperature detection device 204 can be arranged on the conductive structure 106 of the heating element 100. Specifically, the temperature detection device 204 can be arranged on the conductive structure 106 of the heating element 100.

[0097] Specifically, when the temperature of the heating element 100 detected by the temperature detection device 204 is too high, the control circuit 212 will reduce the microwaves output by the microwave generating circuit 208, thereby reducing the microwaves absorbed by the absorbing structure 104 and lowering the temperature reached by the absorbing structure 104, thereby achieving the purpose of weakening the heating effect of the heating element 100.

[0098] Specifically, when the temperature of the heating element 100 detected by the temperature detection device 204 is too low, the control circuit 212 will increase the microwaves output by the microwave generating circuit 208, thereby increasing the microwaves absorbed by the absorbing structure 104. The absorbing structure 104 can reach a higher temperature, thereby increasing the heating temperature of the aerosol generating matrix 300, so as to achieve the purpose of enhancing the heating effect of the heating element 100.

[0099] On the basis of any of the above embodiments, further, in the present invention, the conductive structure 106 may not be connected to the control circuit 212, so that the conductive structure 106 is open-circuited; or the conductive structure 106 may be electrically connected to the ground wire of the control circuit 212, so that the conductive structure 106 is short-circuited.

[0100] On the basis of any of the above embodiments, further, Figure 1 As shown, the aerosol generating device further includes a housing 214. The housing 214 includes an installation cavity 218 and the above-mentioned atomization cavity 202. The microwave generating device 210, the control circuit 212 and the power supply device 216 of the aerosol generating device are all arranged in the installation cavity 218 to ensure the stable installation of the microwave generating device 210, the control circuit 212 and the power supply device 216, and provide a kind of protection for the microwave generating device 210, the control circuit 212 and the power supply device 216.

[0101] Specifically, the heating principle of the aerosol generating device proposed by the present invention is as follows: the conductive structure 106 in the heating element 100 can be considered as the grounding structure in the introduction structure 102; the first layer of the introduction structure 102 is used to transmit and transmit microwaves, and the second layer of the absorbing structure 104 is used to absorb microwaves and generate heat when absorbing microwaves. Through this structural design, microwaves mainly exist between the introduction structure 102 and the conductive structure 106. After most of the microwaves are absorbed and lost by the absorbing structure 104, the absorbing structure 104 will generate a large amount of heat, which will increase the temperature of the absorbing structure 104, thereby heating the aerosol generating matrix 300. In addition, the magnetic field strength near the microstrip line is stronger and the heating speed is faster, and this characteristic can be used to design the temperature field.

[0102] It should be noted that the introduction structure 102 and the conductive structure 106 also have a certain stability under the heat radiation of the absorbing structure 104, and can simultaneously heat the aerosol generating matrix 300. In addition, a small portion of microwaves that are not absorbed by the absorbing structure 104 will directly act on the aerosol generating matrix 300, thereby achieving an auxiliary heating effect.

[0103] In summary, the present invention utilizes the principle of microwave load absorbing microwaves to design the heating element 100, and the entire absorbing structure 104 can absorb microwaves very quickly to heat up, and the heating speed is very fast. The present invention has a wide range of material selection for the microstrip line and the conductive structure 106. The material can be selected first, and then the microstrip line graphic design can be performed, so some low-cost and high-safety metals can be preferred. In addition, the present invention can design the microstrip line graphic to obtain the desired temperature field. In the present invention, most of the microwaves are absorbed by the absorbing structure 104. Therefore. The annular isolator circuit can be removed in the microwave generating circuit 208, so that the entire circuit structure is simple.

[0104] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0105] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation 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.

[0106] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aerosol generating device, characterized in that: include: An atomization chamber, wherein the atomization chamber is used to place an aerosol generating matrix; A microwave generating device, used for generating microwaves; A heating element is disposed in the atomizing chamber and can be inserted into the aerosol generating matrix, and the heating element includes: An introduction structure electrically connected to the microwave generating device; A wave absorbing structure, arranged on the introduction structure, the wave absorbing structure can generate heat under the action of the microwave; A conductive structure, disposed on the wave absorbing structure; The heating element is a heating sheet, the heating element as a whole is a sheet-like structure, and the introduction structure, the wave absorbing structure and the conductive structure are distributed along the thickness direction of the heating sheet; The conductive structure and the introduction structure are located on two opposite sides of the absorbing structure; The introduction structure includes an introduction layer; the conductive structure includes a conductive layer; the absorbing structure includes an absorbing layer; The conductive layer is a metal layer; and The area of ​​the conductive layer is greater than or equal to the area of ​​the absorbing layer.

2. The aerosol generating device according to claim 1, characterized in that: The wave absorbing structure includes at least one of the following: a silicon carbide structure, a zinc oxide structure or an iron oxide structure.

3. The aerosol generating device according to claim 1, characterized in that: The absorbing structure comprises a microstrip line, and one end of the microstrip line is connected to the microwave generating device.

4. The aerosol generating device according to claim 3, characterized in that At least a portion of the microstrip line is bent; and / or At least a portion of the microstrip line is in a straight line shape.

5. The aerosol generating device according to claim 1, characterized in that: The heating element is arranged in the middle of the atomizing chamber and has a distance from the side wall of the atomizing chamber.

6. The aerosol generating device according to claim 1, characterized in that: The first end of the heating element is arranged on the bottom wall of the atomizing chamber, and the second end of the heating element is provided with an inserting portion.

7. The aerosol generating device according to claim 1, characterized in that: The microwave generating device comprises: A microwave generating circuit, used for generating the microwave; The microwave transmission circuit is electrically connected to the microwave generating circuit and the introduction structure.

8. The aerosol generating device according to claim 7, characterized in that: The return loss characteristic parameter of the microwave transmission circuit is less than or equal to -6db.

9. The aerosol generating device according to claim 1, characterized in that: Also includes: A control circuit electrically connected to the microwave generating device; A power supply device is electrically connected to the control circuit and the microwave generating device.

10. The aerosol generating device according to claim 9, characterized in that: Also includes: A temperature detection device, disposed on the heating element and electrically connected to the control circuit; Wherein, the temperature detection device is used to detect the temperature of the heating element, and the control circuit can control the operation of the microwave generating device according to the detection result of the temperature detection device.

11. The aerosol generating device according to claim 9, characterized in that The conductive structure is disconnected from the control circuit; or The conductive structure is electrically connected to a ground line of the control circuit.

12. The aerosol generating device according to claim 9, characterized in that Also includes: The shell includes the atomization cavity and an installation cavity, and the microwave generating device, the control circuit and the power supply device are arranged in the installation cavity.

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