WO2023050375A1

WO2023050375A1 - Aerosol-generating device

Info

Publication number: WO2023050375A1
Application number: PCT/CN2021/122354
Authority: WO
Inventors: 卜桂华; 杜靖; 程志文; 李东建; 梁峰
Original assignee: 深圳麦克韦尔科技有限公司; 深圳麦时科技有限公司
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-06
Also published as: JP7488919B2; EP4183278A1; EP4183278A4; JP2023547295A; KR20230047959A

Abstract

An aerosol-generating device (100), which belongs to the technical field of electronic atomization. The aerosol-generating device (100) comprises: a housing (102), the housing (102) being provided with a resonant cavity (104); a mounting portion (106), which is provided in the housing (102), located at a first end of the resonant cavity (104), and configured to accommodate an aerosol-generating matrix; a microwave assembly (108), which is connected to the housing (102) and configured to emit microwaves into the resonant cavity (104) so as to heat the aerosol-generating matrix to generate an aerosol; and an optical fiber temperature sensing element (110), which is provided in the resonant cavity (104) and configured to measure the temperature of the aerosol-generating matrix, at least part of the optical fiber temperature sensing element (110) passing through the mounting portion (106). By means of providing the optical fiber temperature sensing element (110) to collect the temperature of the aerosol-generating matrix, the temperature of the aerosol-generating matrix is not affected by a microwave field in the resonant cavity (104), and the accurate temperature of the aerosol-generating matrix can be fed back at a very fast speed; and generation of unwanted substances due to unsuitable temperature is prevented, and in addition, the atomization efficiency is improved, the waste of the matrix is reduced, and the use experience of the aerosol-generating device (100) such as an electronic cigarette is effectively improved.

Description

Aerosol generating device

technical field

The present application belongs to the technical field of electronic atomization, and in particular relates to an aerosol generating device.

Background technique

A heat not burn (Heat Not Burning, HNB) device is an electronic device that heats without burning the aerosol-generating substrate (treated plant leaf products). The heat-not-burn device heats the aerosol-generating substrate at a high temperature to a temperature at which the aerosol-generating substrate can generate aerosol but is not high enough to burn, and can allow the aerosol-generating substrate to generate the aerosol required by the user without burning.

At present, the HNB devices on the market mainly adopt the resistance heating method, that is, use a central heating sheet or a heating needle to insert from the center of the aerosol-generating matrix to the inside of the aerosol-generating matrix for heating. This kind of device needs to be preheated for a long time before use, and it cannot be pumped and stopped freely, and the carbonization of the aerosol-generating matrix is uneven, resulting in insufficient baking of the aerosol-generating matrix and low utilization rate; Dirt is generated in the sol-generating matrix extractor and the base of the heating sheet, which is difficult to clean; the temperature of the local aerosol-generating matrix in contact with the heating element will be too high, and partial cracking will occur, releasing unnecessary substances. Therefore, microwave heating technology has gradually replaced resistance heating as a new heating method. Microwave heating technology has the characteristics of high efficiency, timeliness, selectivity and no delay in heating, and it only has a heating effect on substances with specific dielectric properties. The application advantages of using microwave heating atomization are: a. Microwave heating is radiation heating, non-thermal conduction, which can realize immediate pumping and stop; b. There is no heating sheet, so there is no problem of broken pieces and cleaning heating sheets; c. Aerosol generation The matrix utilization rate is high, the taste consistency is high, and the taste is closer to cigarettes.

At the same time, for the HNB device of the resistance heating method, the heating temperature is controlled by a thermocouple for feedback measurement to control the output of the current or voltage, so as to achieve the purpose of temperature control. The consistency and accuracy of the electrical parameters of the heating sheet are very high, and the temperature control accuracy is poor. Inaccurate temperature control is likely to produce unwanted substances. For HNB devices with microwave heating method, microwave heating will generate strong electromagnetic field. The skin effect and eddy current effect make its own temperature rise and easily generate sparks, which seriously interferes with temperature measurement, causing large errors in temperature indication or unable to perform stable temperature measurement.

Contents of the invention

This application aims to solve one of the technical problems existing in the prior art or related art.

For this reason, the present application proposes an aerosol generating device.

In view of this, according to the present application, an aerosol generating device is proposed, including: a housing, the housing is provided with a resonant cavity; the installation part is arranged on the housing and is located at the first end of the resonant cavity, and is used to accommodate the aerosol generating matrix The microwave component is connected with the housing and is used to emit microwaves into the resonant cavity to heat the aerosol-generating substrate to generate aerosol; the optical fiber temperature sensing element is arranged in the resonant cavity to detect the temperature of the aerosol-generating substrate, At least part of the optical fiber temperature sensing element is passed through the installation part.

In this technical solution, the aerosol generating device includes "electronic cigarette" and other equipment, wherein the housing is the main frame of the aerosol generating device, a resonant cavity is formed inside the housing, and a microwave components. The casing is also provided with an installation part, which is arranged at the first end of the resonant cavity, and the installation part is used for accommodating the aerosol generating matrix.

During the working process of the aerosol generating device, the microwave component can generate microwaves and emit the microwaves into the resonant cavity, thereby heating the aerosol generating substrate installed on the installation part, making it atomized to form aerosol for the user Snorting.

Wherein, the material of the mounting part is specifically an insulating material with low dielectric loss performance, specifically, the material of the mounting part may be PTFE (Poly tetrafluoroethylene, polytetrafluoroethylene), microwave transparent ceramics, and the like.

Among them, the aerosol generating device also includes an optical fiber temperature sensing element. The optical fiber temperature sensing element mainly includes an optical fiber structure, which is used as a temperature acquisition sensor and a signal transmission channel through the optical fiber at the same time. , to achieve temperature detection, which does not set metal probes and metal cables, so it has super anti-electromagnetic field interference, fast response time, stable performance, long life, corrosion resistance, small size and so on.

The temperature of the aerosol-generating matrix is collected by setting the optical fiber temperature sensor, which will not be affected by the microwave field in the resonant cavity, so the collected temperature information is more accurate, and the response to temperature changes is faster. The transmission speed is significantly faster than that of ordinary cables, so the accurate temperature of the aerosol-generating substrate can be fed back at a very fast speed, so as to control the microwave components and adjust the microwave power in time, so that the aerosol-generating substrate is atomized at an appropriate temperature. On the one hand It prevents unnecessary substances from being produced due to inappropriate temperature, on the other hand, improves atomization efficiency, reduces substrate waste, and effectively improves the experience of using aerosol generating devices such as electronic cigarettes.

In addition, according to the aerosol generating device in the above technical solution provided by the present application, it may also have the following additional technical features:

In the above technical solution, a through hole communicating with the resonant cavity is provided on the installation part, and at least part of the optical fiber temperature sensing element passes through the through hole.

In this technical solution, the optical fiber temperature sensing element mainly includes an optical fiber structure. In order to allow the optical fiber temperature sensing element to pass through the installation part and be able to contact the aerosol-generating matrix, a through hole communicating with the resonant cavity is provided on the installation part. The optical fiber structure passes through the resonant cavity and the through hole on the mounting part, and at least part of the optical fiber structure is in contact with the aerosol-generating substrate, so that the actual temperature of the aerosol-generating substrate can be accurately identified, so that the aerosol-generating device can be generated according to the aerosol The actual temperature of the substrate controls the working power of the microwave components, so that the aerosol-generating substrate can be atomized at an appropriate temperature, ensuring atomization efficiency and preventing unwanted substances from being produced.

In any of the above technical solutions, the optical fiber temperature sensing element includes N optical fiber temperature sensing probes; the number of through holes is N, and the N through holes correspond to the N optical fiber temperature sensing probes one by one, wherein N is greater than 1 integer.

In this technical solution, the optical fiber temperature sensing element includes a plurality of optical fiber temperature sensing probes, specifically N optical fiber temperature sensing probes, specifically, one optical fiber temperature sensing probe may be a bundle of optical fiber wires. At the same time, corresponding to the N optical fiber temperature-sensing probes, there are N through-holes corresponding to each of the N optical-fiber temperature-sensing probes on the installation part, and each of the N optical fiber temperature-sensing probes passes through the installation part through a corresponding through-hole. , so that the temperature of different parts in the aerosol-generating substrate can be collected, and then the overall temperature change curve of the aerosol-generating substrate can be monitored in real time when it is heated and atomized.

Therefore, the aerosol generating device provided by the embodiment of the present application, on the one hand, can better control the heating of the microwave components to prevent the reduction of atomization efficiency caused by the local temperature being too high or too low; The overall temperature change of the aerosol generating substrate during heating and atomization, and exploring the microwave distribution in the resonant cavity in the aerosol generating device will help designers adjust the working parameters of the microwave components to obtain a more uniform microwave field distribution. The aerosol generating device (such as the electronic cigarette) can better evenly heat the aerosol generating substrate (such as the cartridge used in conjunction with the electronic cigarette) and fully atomize it.

In any of the above technical solutions, the aerosol generating device further includes: a resonant column, located in the resonant cavity, the first end of the resonant column is connected to the installation part, and the second end of the resonant column is connected to the second end of the resonant cavity .

In this technical solution, a resonant column used in conjunction with microwave components is provided in the resonant cavity of the aerosol generating device. The resonant column is specifically used for resonant conduction of the microwave emitted by the microwave component, so that the microwave component is fed into the resonant cavity. The microwave is conducted from the second end of the resonant column to the first end of the resonant column, and then the aerosol-generating substrate on the mounting part is heated by the microwave to be atomized into an aerosol.

Wherein, the aerosol-generating matrix and the resonant cavity are isolated from each other through the installation part, which can prevent the aerosol, liquid waste, and fixed waste generated by atomization from entering the resonant cavity, and prevent the waste from contaminating the resonant cavity and causing failure.

In any of the above technical solutions, the resonant cavity is a cylindrical resonant cavity, and the mounting part is a cylindrical mounting part, and the cylindrical resonant cavity and the cylindrical mounting part are coaxially arranged; the resonant column and the cylindrical resonant cavity are coaxially arranged.

In this technical solution, both the resonant cavity and the installation part are cylindrically arranged, on the one hand, it can effectively improve the utilization rate of the internal space, reduce the overall volume of the device, and realize the miniaturization of the aerosol generating device; The overall strength of each structure in the sol generating device.

At the same time, the cylindrical resonant cavity and the cylindrical mounting part are coaxially arranged, and the resonant column and the cylindrical resonant cavity are coaxially arranged to ensure that the microwave transmitted to the aerosol-generating substrate through the resonant column can be transmitted to the middle of the aerosol-generating substrate position, so as to improve the uniformity of microwave heating of the aerosol-generating substrate, avoid the uneven heating of the aerosol-generating substrate caused by microwave concentration, further improve the atomization efficiency, and ensure the atomization effect of the aerosol-generating substrate.

In any of the above technical solutions, the resonant column includes a cavity, and the cavity penetrates the resonant column along the axial direction of the resonant column.

In this technical solution, the resonant column is specifically a hollow "tube-shaped" structure, in which the optical fiber temperature sensor can be transmitted inside the resonant column, so that the fiber temperature sensor can be fixed and protected through the resonant column to prevent the optical fiber from sensing The temperature probe is damaged.

In any of the above technical solutions, the aerosol generating device further includes: a controller for controlling the microwave components according to the temperature of the aerosol generating substrate; probes and controllers.

In this technical solution, the aerosol generating device also includes a controller, which can control the operation of the microwave component according to the sucking action of the user, and control the working parameters of the microwave component according to the collected aerosol generating matrix, such as microwave power, microwave occupation Empty ratio etc.

The optical fiber temperature sensing part includes a transmission line, specifically an optical fiber harness. One end of the transmission line is connected to the optical fiber temperature sensor, and the other end is connected to the controller, so that the temperature data collected by the optical fiber temperature sensor is sent to the server for the server to pass through the aerosol. The temperature of the substrate is generated, and the working parameters of the microwave components are adjusted so that the aerosol-generating substrate is atomized at a suitable temperature. On the one hand, it prevents unnecessary substances from being produced due to improper temperature, and on the other hand, it improves the atomization efficiency and reduces substrate waste. , effectively improving the experience of using aerosol generating devices such as electronic cigarettes.

In any of the above technical solutions, the resonant column is a conductor resonant column.

In this technical solution, the resonant column is used to resonate and conduct the microwave emitted by the microwave component, so that the microwave fed into the resonant cavity by the microwave component is transmitted from the second end of the resonant column to the first end of the resonant column, and then the installation The aerosol-generating substrate on the surface is heated by microwaves to atomize it into an aerosol.

Wherein, in order to meet the resonance requirement, the outer surface of the resonant column needs to have electrical conductivity. Therefore, the material of the resonant column is a conductor material, that is, the resonant column is a conductive resonant column, and its material is preferably a metal, such as copper, iron, aluminum, silver, gold, or an alloy of the above metals. In some embodiments, the conductor resonates The material of the pillars may also be carbon or carbon isomorphs, which is not limited in the embodiments of the present application.

In any of the above technical solutions, the resonant column is a metal resonant column.

In this technical solution, the resonant column is a metal resonant column. Specifically, the resonant column is used to resonate and conduct the microwave emitted by the microwave component, so that the microwave fed into the resonant cavity by the microwave component is transmitted from the second end of the resonant column to the first end of the resonant column, and then to the mounting part. The aerosol-generating substrate is microwave-heated to nebulize it into an aerosol.

Wherein, in order to meet the resonance requirement, the outer surface of the resonant column needs to have electrical conductivity. Therefore, the resonant column is made of metal, including copper, iron, aluminum, silver, gold or alloys of the above metals.

In any of the above technical solutions, the resonant column includes: a column; a first metal thin film layer, and the first metal thin film layer covers the outer sidewall of the column.

In this technical solution, the resonant column specifically includes a column body and a first metal thin film layer. Among them, the resonant column is used to resonate and conduct the microwave emitted by the microwave component, so that the microwave fed into the resonant cavity by the microwave component is transmitted from the second end of the resonant column to the first end of the resonant column, and then the gas on the installation part The sol-generating substrate is heated by microwaves to nebulize it into an aerosol.

Wherein, in order to meet the resonance requirement, the outer surface of the resonant column needs to have electrical conductivity. Therefore, a metal thin film layer covering the cylinder is provided on the outer wall of the cylinder, so that the outer surface of the resonant cylinder has conductivity, so that the resonant conduction of the microwave emitted by the microwave component can be realized.

It can be understood that the metal thin film layer can be made of a single metal material or a metal alloy material. Preferably, the metal thin film layer may be made of copper, iron, aluminum, silver, gold or an alloy of the above metals.

In any of the above technical solutions, the casing includes: a first outer casing; an inner casing connected to the first outer casing and located in the first outer casing, the inner casing is made of metal, and the resonant cavity is located in the inner casing.

In this technical solution, a resonant cavity is formed inside the casing, and the cavity wall of the resonant cavity has electrical conductivity, so that the microwave generated by the microwave component is bound in the resonant cavity to prevent the microwave from leaking out. Specifically, the housing includes a first outer housing and an inner housing. The first outer housing may be made of an insulating material such as plastic, or may be made of metal. The inner housing is connected to the outer housing on the inner side of the first outer housing. The inner casing is a hollow structure in which a resonant cavity is formed. Since the inner casing is made of metal, the microwaves generated by the microwave components can be confined in the resonant cavity, preventing the microwaves from diffusing to the external environment and ensuring the safe use of the aerosol generating device.

At the same time, due to the double structure of the first outer casing and the inner casing, the first outer casing can be made of insulating material, which further ensures the safety of the aerosol generating device.

Wherein, the material of the inner shell may be copper, iron, aluminum, silver, gold or an alloy material of the above metals. This application does not limit this.

In any of the above technical solutions, the housing includes: a second outer housing; a conductive layer covering the inner sidewall of the second outer housing, the outer side of the conductive layer is connected to the second outer housing, and the resonant cavity is located inside the conductive layer.

In this technical solution, a resonant cavity is formed inside the casing, and the cavity wall of the resonant cavity has electrical conductivity, so that the microwave generated by the microwave component is bound in the resonant cavity to prevent the microwave from leaking out. Specifically, the housing includes a second outer shell and a conductive layer, and the conductive layer covers the inner side wall of the second outer shell, thereby forming a conductive shielding layer, capable of confining the microwaves generated by the microwave components in the surrounding area formed by the conductive layer. In the resonant cavity, the microwave cannot be diffused to the external environment, ensuring the safety of the aerosol generating device.

At the same time, due to the dual structure of the second outer shell and the inner shell, the second shell can be made of insulating material, which further ensures the safety of the aerosol generating device.

Wherein, the conductive layer is preferably a metal conductive layer, and the material of the conductive layer may be copper, iron, aluminum, silver, gold or an alloy material of the above metals. This application does not limit this.

In any of the above technical solutions, the aerosol generating device further includes: an isolation cover disposed on the installation part, and the isolation cover is sleeved on the part where the optical fiber temperature sensing element passes through the installation part.

In this technical solution, an isolation cover is arranged on the installation part, and the isolation cover is arranged correspondingly to the through hole on the installation part, and is sheathed on the optical fiber temperature sensing element. Specifically, after the optical fiber temperature sensing element passes through the through hole of the installation part, it is covered by the isolation cover, and the optical fiber temperature sensing element and the resonant cavity are isolated from the aerosol-generating matrix through the isolation cover, thereby preventing the optical fiber temperature sensing probe from being separated from the aerosol. Direct contact with the substrate is generated to avoid aerosol generation, liquid substances and other dirt generated after the substrate is atomized to contaminate the temperature sensor, thereby improving the service life and test accuracy of the optical fiber temperature sensor.

Wherein, the isolation cover is a transparent isolation cover.

In any of the above technical solutions, the isolation cover is a glass isolation cover, and the optical fiber temperature sensing element is attached to the inner surface of the glass isolation cover.

In this technical solution, the isolation cover is a glass isolation cover, which has good light transmission, corrosion resistance and wear resistance, and can effectively protect the optical fiber temperature sensing element. At the same time, the optical fiber temperature sensing element is attached to the inner surface of the glass isolation cover, so that the temperature of the aerosol-generating matrix can be collected more accurately, and the accuracy of temperature collection can be improved.

In any of the above technical solutions, the optical fiber temperature sensing probe is a cylindrical optical fiber temperature sensing probe, and the diameter of the cylindrical optical fiber temperature sensing probe is greater than or equal to 0.2 mm and less than or equal to 3 mm.

In this technical solution, the optical fiber temperature sensing probe is specifically a cylindrical optical fiber temperature sensing probe with a diameter ranging from 0.2 mm to 3 mm. On the one hand, it can reduce the volume of the aerosol generating device; More fiber optic temperature probes to improve the accuracy of temperature detection.

In any of the above technical solutions, the temperature measuring range of the optical fiber temperature sensing element is: -20°C to 400°C.

In this technical solution, for aerosol generating devices such as "electronic cigarettes", when the temperature of the aerosol generated by atomization is in the range of 160°C-180°C, it can have a large amount of smoke and a sense of satisfaction. Therefore, the temperature measurement range of the optical fiber temperature sensing element is within the range of -20°C to 400°C, which can effectively cover the temperature range of the aerosol-generating substrate.

In any of the above technical solutions, the microwave assembly includes: a microwave introduction part, which is arranged on the side wall of the housing, and the microwave introduction part is connected with the resonant cavity; a microwave emission source is connected with the microwave introduction part, and the microwave output by the microwave emission source passes through The microwave introduction part is fed into the resonant cavity, so that the microwave is transmitted along the direction from the second end of the resonant column to the first end of the resonant column.

In this technical solution, the microwave assembly includes a microwave emission source and a microwave introduction part. The microwave emission source is used to generate microwaves, and the microwave introduction part arranged on the side wall of the casing is used to transport the microwaves generated by the microwave emission source into the resonant cavity. After the microwave is fed into the resonant cavity through the microwave introduction part, the microwave can be conducted along the direction from the second end of the resonant column to the first end of the resonant column, so that the microwave can directly act on the aerosol-generating substrate and improve the fog of the aerosol-generating substrate. effect.

In any of the above technical solutions, it includes: a first introduction part, which is arranged on the side wall of the casing, and the first introduction part is connected with the microwave emission source; a second introduction part, the first end of the second introduction part is connected to the first introduction part The parts are connected, the second leading part is located in the resonant cavity, and the second end of the second leading part faces the bottom wall of the resonant cavity.

In this technical solution, the microwave introduction part includes a first introduction part and a second introduction part, the first introduction part penetrates the side wall of the casing, and the first end of the first introduction part is connected with the microwave emission source, so that the microwave emission The microwave generated by the source enters the microwave introducing part through the first end of the first introducing part. The second end of the first introduction part is connected with the first end of the second introduction part, and the second end of the second introduction part faces the bottom wall of the resonant cavity. After the microwave is conducted through the first introduction part and the second introduction part, the microwave is conducted from the bottom wall of the resonant cavity to the aerosol generating substrate for microwave heating and atomization.

Wherein, the first introduction part is arranged coaxially with the microwave output end of the microwave emission source, the second introduction part has a horizontal introduction part and a vertical introduction part, the axis of the horizontal introduction part is parallel to the bottom wall of the resonant cavity, and the vertical introduction part The axis is perpendicular to the bottom wall of the resonator. The horizontal introduction part is connected with the vertical introduction part through the bending part, and the horizontal introduction part is arranged coaxially with the first introduction part. By arranging the microwave introduction part in the above manner, all the microwaves generated by the microwave emission source can enter the resonant cavity and be conducted in the resonant cavity through the resonant column.

In any of the above technical solutions, the microwave introduction part includes: a third introduction part, which is arranged on the side wall of the casing, the first end of the third introduction part is connected to the microwave emission source, and the second end of the third introduction part faces the resonance column.

The microwave introduction part also includes a third introduction part, the third introduction part is arranged coaxially with the microwave output end of the microwave emission source, the first end of the third introduction part is connected with the microwave emission source, and the second end of the third introduction part faces the resonance Column, by setting the third introduction part coaxially with the microwave output end of the microwave emission source, and the third introduction part is connected with the resonant column, the microwave is directly transmitted to the resonant column, so that all the microwaves output by the microwave emission source enter the resonant cavity Inside.

In any of the above technical solutions, the aerosol generating device further includes: a recessed part disposed on the bottom wall of the resonant cavity, and the second end of the second introduction part is located in the recessed part.

The aerosol generating device also includes a recessed part, which is arranged on the bottom wall of the resonant cavity, and the recessed part is arranged opposite to the second end of the second introducing part, and the second end of the second introducing part extends into the recessed part, so that the entering The microwaves entering the resonant cavity can be conducted along the direction from the second end to the first end of the resonant column, thereby reducing energy loss during microwave conduction.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

Figure 1 shows one of the structural schematic diagrams of an aerosol generating device according to an embodiment of the present application;

Fig. 2 shows the second structural schematic diagram of the aerosol generating device according to the embodiment of the present application;

Fig. 3 shows the third structural schematic diagram of the aerosol generating device according to the embodiment of the present application;

Fig. 4 shows the fourth schematic structural view of the aerosol generating device according to the embodiment of the present application;

Fig. 5 shows the fifth structural schematic diagram of the aerosol generating device according to the embodiment of the present application;

Fig. 6 shows the sixth schematic diagram of the structure of the aerosol generating device according to the embodiment of the present application;

Fig. 7 shows the seventh structural schematic diagram of the aerosol generating device according to the embodiment of the present application;

Fig. 8 shows the eighth structural schematic diagram of the aerosol generating device according to the embodiment of the present application.

Reference signs:

100 aerosol generating device, 102 shell, 1021 first outer shell, 1022 inner shell, 1023 second outer shell, 1024 conductive layer, 104 resonant cavity, 106 mounting part, 1062 through hole, 108 microwave component, 1082 microwave introduction Department, 10822 the first introduction part, 10824 the second introduction part, 1084 microwave emission source, 110 fiber optic temperature sensing part, 1102 fiber optic temperature sensing probe, 1104 transmission line, 112 resonant column, 1122 cavity, 1124 cylinder, 1126 first metal Thin film layer, 113 controller, 114 isolation cover, 116 recessed part.

Detailed ways

In order to better understand the above-mentioned purpose, features and advantages of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the application, but the application can also be implemented in other ways different from those described here, therefore, the protection scope of the application is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

An aerosol generating device according to some embodiments of the present application will be described below with reference to FIGS. 1 to 8 .

In some embodiments of the present application, an aerosol generating device is provided. FIG. 1 shows one of the structural schematic diagrams of an aerosol generating device according to an embodiment of the present application. As shown in FIG. 1 , an aerosol generating device 100 It includes: a housing 102, the housing 102 is provided with a resonant cavity 104; the installation part 106 is arranged on the housing 102, and is located at the first end of the resonant cavity 104, and is used to accommodate the aerosol generating matrix; the microwave component 108 is connected with the housing 102 Connected to each other, used to emit microwaves into the resonant cavity 104 to heat the aerosol-generating matrix to generate aerosol; the optical fiber temperature sensing element 110 is located in the resonant cavity 104 for detecting the temperature of the aerosol-generating matrix, and at least part of the optical fiber senses The temperature element 110 passes through the installation portion 106 .

In the embodiment of the present application, the aerosol generating device 100 can be used to atomize a solid aerosol-generating substrate, such as a plant leaf substrate with a desired smell, and the aerosol-generating substrate can further add other aroma components, wherein , the housing 102 is the main frame of the aerosol generating device 100 , a resonant cavity 104 is formed inside the housing 102 , and a microwave component 108 connected to the housing 102 is provided at the same time. The casing 102 is further provided with an installation part 106, which is arranged at the first end of the resonant cavity 104, and the installation part 106 is used for accommodating the aerosol generating matrix.

During the working process of the aerosol generating device 100, the microwave component 108 can generate microwaves and transmit the microwaves into the resonant cavity 104, thereby heating the aerosol generating substrate installed on the installation part 106, atomizing it to form an aerosol generating substrate. Sol, for users to inhale.

Wherein, the material of the installation part 106 is specifically an insulating material with low dielectric loss performance, specifically, the material of the installation part 106 can be PTFE (Poly tetrafluoroethylene, polytetrafluoroethylene), microwave transparent ceramics, etc.

Wherein, the aerosol generating device 100 also includes an optical fiber temperature sensing element 110. The optical fiber temperature sensing element 110 mainly includes an optical fiber structure, which is used as a sensor for temperature collection and a signal transmission channel through the optical fiber at the same time. Scattered light signals are used to detect temperature. There are no metal probes and metal cables, so it has the characteristics of super anti-electromagnetic field interference, fast response time, stable performance, long life, corrosion resistance, and small size.

The temperature of the aerosol-generating matrix is collected by setting the optical fiber temperature sensing element 110, which will not be affected by the microwave field in the resonant cavity 104, so the collected temperature information is more accurate, and the response speed to temperature changes is faster. The signal transmission speed of the cable is significantly faster than that of ordinary cables, so the accurate temperature of the aerosol-generating substrate can be fed back at a very fast speed, so as to control the microwave component 108 to adjust the microwave power in time, so that the aerosol-generating substrate is atomized at a suitable temperature On the one hand, it prevents unnecessary substances from being generated due to improper temperature, on the other hand, it improves the atomization efficiency, reduces the waste of substrates, and effectively improves the experience of using the aerosol generating device 100 such as electronic cigarettes.

In addition, according to the aerosol generating device 100 in the above technical solution provided by this application, it may also have the following additional technical features:

In some embodiments of the present application, the mounting part 106 is provided with a through hole 1062 communicating with the resonant cavity 104 , and at least part of the optical fiber temperature sensing element 110 passes through the through hole 1062 .

In the embodiment of the present application, the optical fiber temperature sensing element 110 mainly includes an optical fiber structure. In order to allow the optical fiber temperature sensing element 110 to pass through the installation part 106 so as to be able to contact with the aerosol-generating matrix, a connection resonator is provided on the installation part 106. The through hole 1062 of the cavity 104, the optical fiber structure passes through the through hole 1062 on the resonant cavity 104 and the installation part 106, at least part of the optical fiber structure is in contact with the aerosol-generating substrate, so that the actual temperature of the aerosol-generating substrate can be accurately identified, The aerosol generating device 100 can control the working power of the microwave component 108 according to the actual temperature of the aerosol-generating substrate, so that the aerosol-generating substrate can be atomized at an appropriate temperature, ensuring atomization efficiency and preventing unwanted substances from being produced.

In some embodiments of the present application, FIG. 2 shows the second structural schematic diagram of the aerosol generating device according to the embodiment of the present application. As shown in FIG. 2 , the optical fiber temperature sensing element 110 includes N optical fiber temperature sensing probes 1102; The number of through holes 1062 is N, and the N through holes 1062 correspond to the N optical fiber temperature sensing probes 1102 one by one, wherein N is an integer greater than 1.

In the embodiment of the present application, the optical fiber temperature sensing element 110 includes a plurality of optical fiber temperature sensing probes 1102, specifically N optical fiber temperature sensing probes 1102, specifically, one optical fiber temperature sensing probe 1102 may be a bundle of optical fiber wires. At the same time, corresponding to the N optical fiber temperature sensing probes 1102, the mounting part 106 is also provided with N through holes 1062 corresponding thereto one by one, and each probe in the N optical fiber temperature sensing probes 1102 has a corresponding through hole 1062 passes through the installation part 106, so that the temperature of different parts of the aerosol-generating substrate can be collected, and then the overall temperature change curve of the aerosol-generating substrate can be monitored in real time when it is heated and atomized.

Therefore, the aerosol generating device 100 provided by the embodiment of the present application, on the one hand, can better control the heating of the microwave component 108 to prevent the reduction of the atomization efficiency caused by the local temperature being too high or too low; on the other hand, it is beneficial to make the design According to the overall temperature change of the aerosol generating substrate during heating and atomization, personnel explore the distribution of microwaves in the resonant cavity 104 in the aerosol generating device 100, which will help designers adjust the working parameters of the microwave component 108 to obtain a more uniform The distribution of the microwave field enables the aerosol generating device 100 to better uniformly heat the aerosol generating substrate and fully atomize it.

As shown in FIG. 2, in some embodiments of the present application, the aerosol generating device 100 further includes: a resonant column 112, located in the resonant cavity 104, the first end of the resonant column 112 is connected to the installation part 106, and the resonant column 112 The second end of the resonant cavity 104 is connected to the second end.

In the embodiment of the present application, in the resonant cavity 104 of the aerosol generating device 100, a resonant column 112 used in conjunction with the microwave component 108 is provided. The microwave component 108 feeds the microwave into the resonant cavity 104, which is conducted from the second end of the resonant column 112 to the first end of the resonant column 112, and then microwave-heats the aerosol-generating substrate on the mounting part 106 to atomize it into an aerosol. Sol.

Wherein, the aerosol-generating matrix and the resonant cavity 104 are isolated from each other by the installation part 106, which can prevent the aerosol, liquid waste, and fixed waste generated by atomization from entering the resonant cavity 104, and prevent the waste from contaminating the resonant cavity 104 and causing failure.

As shown in Figure 1, Figure 2 and Figure 3, in some embodiments of the present application, the resonant cavity 104 is a cylindrical resonant cavity, the mounting part 106 is a hollow cylindrical mounting part 106, and the cylindrical resonant cavity 104 and the hollow cylindrical The installation part 106 is arranged coaxially; the resonant column 112 is arranged coaxially with the cylindrical resonant cavity 104 .

In the embodiment of the present application, as shown in FIG. 2 , the installation part 106 is a hollow cylindrical structure, and one end of the installation part 106 near the resonant cavity 104 has a bottom wall, and the bottom wall isolates the installation part 106 and the resonant cavity 104 . The optical fiber temperature sensing element 110 is arranged on the bottom wall. Wherein, the bottom wall of the resonant cavity 104 is provided with a plurality of through holes 1062, and the plurality of through holes 1062 are evenly distributed on the bottom wall of the resonant cavity 104, the optical fiber temperature sensing element 110 corresponds to the through hole 1062 one by one, and the optical fiber temperature sensing element The fiber optic temperature sensing probe 1102 of 110 partially enters the resonant cavity 104 after passing through the through hole 1062 .

The resonant cavity 104 and the installation part 106 are both cylindrically arranged, which can effectively improve the utilization rate of the internal space on the one hand, reduce the overall volume of the device, realize the miniaturization of the aerosol generating device 100, and improve the efficiency of the aerosol generating device on the other hand. The overall strength of each structure in 100.

At the same time, the cylindrical resonant cavity 104 and the cylindrical mounting part 106 are coaxially arranged, and the resonant column 112 is coaxially arranged with the cylindrical resonant cavity 104, which can ensure that the microwave transmitted to the aerosol generating substrate through the resonant column 112 can be transmitted to the aerosol. The middle position of the sol-generating matrix, thereby improving the uniformity of microwave heating of the aerosol-generating matrix, avoiding the uneven heating of the aerosol-generating matrix caused by microwave concentration, further improving the atomization efficiency, and ensuring the atomization of the aerosol-generating matrix Effect.

In some embodiments of the present application, the resonant column 112 includes a cavity 1122 , and the cavity 1122 penetrates the resonant column 112 along the axis direction of the resonant column 112 .

In the embodiment of the present application, the resonant column 112 is specifically a hollow "tube-shaped" structure, wherein the optical fiber temperature probe 1102 can be transmitted inside the resonant column 112, so that the fiber optic temperature probe 1102 can be fixed through the resonant column 112 And protection to prevent the fiber optic temperature probe 1102 from being damaged.

In some embodiments of the present application, Fig. 3 shows the third structural schematic diagram of the aerosol generating device according to the embodiment of the present application, and Fig. 4 shows the fourth structural schematic diagram of the aerosol generating device according to the embodiment of the present application , as shown in Figure 3 and Figure 4, the aerosol generating device 100 also includes: a controller 113 for controlling the microwave assembly 108 according to the temperature of the aerosol generating substrate; the optical fiber temperature sensing element 110 also includes: a transmission line 1104 located in the cavity In 1122 , the transmission line 1104 connects the optical fiber temperature probe 1102 and the controller 113 .

In the embodiment of the present application, the aerosol generating device 100 further includes a controller 113, the controller 113 can control the operation of the microwave component 108 according to the sucking action of the user, and control the working parameters of the microwave component 108 according to the collected aerosol generating substrate, Such as microwave power, microwave duty cycle, etc.

The optical fiber temperature sensing part includes a transmission line 1104, specifically an optical fiber harness. One end of the transmission line 1104 is connected to the optical fiber temperature sensing probe 1102, and the other end is connected to the controller 113, so that the temperature data collected by the optical fiber temperature sensing probe 1102 is sent to the server for The server adjusts the operating parameters of the microwave component 108 through the temperature of the aerosol-generating substrate, so that the aerosol-generating substrate is atomized at a suitable temperature, on the one hand, preventing the generation of unnecessary substances caused by improper temperature, and on the other hand, improving the mist Improve efficiency, reduce substrate waste, and effectively improve the experience of using the aerosol generating device 100 such as electronic cigarettes.

In some embodiments of the present application, the resonance column 112 is a conductor resonance column 112 .

In the embodiment of the present application, the resonant column 112 is used to resonate and conduct the microwave emitted by the microwave component 108, so that the microwave fed into the resonant cavity 104 by the microwave component 108 is conducted from the second end of the resonant column 112 to the bottom of the resonant column 112. The first end further conducts microwave heating on the aerosol-generating substrate on the installation part 106 to atomize it into an aerosol.

Wherein, in order to meet the resonance requirement, the outer surface of the resonant column 112 needs to have electrical conductivity. Therefore, the material of the resonant column 112 is a conductor material, that is, the resonant column 112 is a conductive resonant column 112, and its material is preferably a metal, such as copper, iron, aluminum, silver, gold or an alloy of the above metals, etc., in some embodiments The material of the conductor resonance column 112 may also be carbon or an allotope of carbon, which is not limited in this embodiment of the present application.

In some embodiments of the present application, the resonant column 112 is a metal resonant column 112 .

In the embodiment of the present application, the resonant column 112 is a metal resonant column 112 . Specifically, the resonant column 112 is used to resonate and conduct the microwave emitted by the microwave component 108, so that the microwave fed into the resonant cavity 104 by the microwave component 108 is conducted from the second end of the resonant column 112 to the first end of the resonant column 112, Further, microwave heating is performed on the aerosol-generating substrate on the installation part 106 to atomize it into an aerosol.

Wherein, in order to meet the resonance requirement, the outer surface of the resonant column 112 needs to have electrical conductivity. Therefore, the resonant column 112 is made of metal, including copper, iron, aluminum, silver, gold or alloys of the above metals.

In some embodiments of the present application, FIG. 5 shows the fifth structural diagram of the aerosol generating device according to the embodiment of the present application. As shown in FIG. 5, the resonant column 112 includes: a column 1124; a first metal thin film layer 1126 , the first metal thin film layer 1126 covers the outer sidewall of the pillar 1124 .

In the embodiment of the present application, the resonance column 112 specifically includes a column body 1124 and a first metal thin film layer 1126 . Wherein, the resonant column 112 is used to resonate and conduct the microwave emitted by the microwave component 108, so that the microwave fed into the resonant cavity 104 by the microwave component 108 is conducted from the second end of the resonant column 112 to the first end of the resonant column 112, wherein , the first end of the resonant column 112 is close to the installation part 106, and then the aerosol-generating substrate on the installation part 106 is heated by microwaves to be atomized into an aerosol.

Wherein, in order to meet the resonance requirement, the outer surface of the resonant column 112 needs to have electrical conductivity. Therefore, a metal film layer covering the cylinder 1124 is provided on the outer wall of the cylinder 1124 , so that the outer surface of the resonant cylinder 112 has conductivity, so that the microwave emitted by the microwave component 108 can be resonantly conducted.

In some embodiments of the present application, FIG. 6 shows the sixth structural schematic diagram of the aerosol generating device according to the embodiment of the present application. As shown in FIG. 6, the casing 102 includes: a first outer casing 1021; an inner casing 1022 , connected to the first outer shell 1021 and located in the first outer shell 1021 , the inner shell 1022 is made of metal, and the resonant cavity 104 is located in the inner shell 1022 .

In the embodiment of the present application, a resonant cavity 104 is formed inside the housing 102 , and the cavity wall of the resonant cavity 104 has electrical conductivity, so that the microwave generated by the microwave component 108 is bound in the resonant cavity 104 to prevent the microwave from leaking out. Specifically, the casing 102 includes a first outer casing 1021 and an inner casing 1022. The first outer casing 1021 can be made of insulating materials such as plastics, or can be made of metal. The inner casing 1022 is inside the first outer casing 1021, and The outer casing 102 is connected, and the inner casing 1022 is a hollow structure, and a resonant cavity 104 is formed therein. Since the inner casing 1022 is made of metal, the microwaves generated by the microwave component 108 can be confined in the resonant cavity 104 , so that the microwaves cannot diffuse to the external environment, ensuring the safety of the aerosol generating device 100 .

At the same time, due to the double structure of the first outer casing 1021 and the inner casing 1022 , the first outer casing can be made of insulating material, which further ensures the safety of the aerosol generating device 100 .

Wherein, the material of the inner casing 1022 may be copper, iron, aluminum, silver, gold or an alloy material of the above metals. This application does not limit this.

In some embodiments of the present application, FIG. 7 shows the seventh schematic structural view of the aerosol generating device according to the embodiment of the present application. As shown in FIG. 7 , the casing 102 includes: a second outer casing 1023; a conductive layer 1024 , covering the inner side wall of the second outer casing 1023 , the outer side of the conductive layer 1024 is connected to the second outer casing 1023 , and the resonant cavity 104 is located inside the conductive layer 1024 .

In the embodiment of the present application, a resonant cavity 104 is formed inside the housing 102 , and the cavity wall of the resonant cavity 104 has electrical conductivity, so that the microwave generated by the microwave component 108 is bound in the resonant cavity 104 to prevent the microwave from leaking out. Specifically, the housing 102 includes a second outer shell 1023 and a conductive layer 1024, the conductive layer 1024 covers the inner sidewall of the second outer shell 1023, thereby forming a conductive shielding layer, capable of confining microwaves generated by the microwave component 108 in the The resonant cavity 104 enclosed by the conductive layer 1024 prevents microwaves from diffusing to the external environment and ensures the safe use of the aerosol generating device 100 .

At the same time, due to the double structure of the second outer shell 1023 and the conductive layer 1024 , the second outer shell 1023 can be made of an insulating material, which further ensures the safety of the aerosol generating device 100 .

Wherein, the conductive layer 1024 is preferably a metal conductive layer 1024, and the material of the conductive layer 1024 may be copper, iron, aluminum, silver, gold or an alloy material of the above metals. This application does not limit this.

Referring to Fig. 1, Fig. 2 and Fig. 3, in some embodiments of the present application, the aerosol generating device 100 also includes: an isolation cover 114, which is arranged on the installation part 106, and the isolation cover 114 is sleeved on the optical fiber temperature sensing element 110 through the part of the mounting part 106.

In the embodiment of the present application, an isolation cover 114 is provided on the installation part 106 , and the isolation cover 114 is provided corresponding to the through hole 1062 on the installation part 106 , and is sheathed on the optical fiber temperature sensing element 110 . Specifically, after the optical fiber temperature sensing element 110 passes through the through hole 1062 of the installation part 106, it is covered by the isolation cover 114, and the optical fiber temperature sensing element 110 and the resonant cavity 104 are isolated from the aerosol generating matrix through the isolation cover 114, thereby preventing The optical fiber temperature probe 1102 is in direct contact with the aerosol-generating substrate to avoid contamination of the temperature-sensing probe by liquid substances and other dirt generated after the aerosol-generating substrate is atomized, thereby improving the service life and testing accuracy of the optical fiber temperature sensor.

Wherein, the isolation cover 114 is a transparent isolation cover 114 .

In some embodiments of the present application, the isolation cover 114 is a glass isolation cover 114 , and the optical fiber temperature sensing element 110 is attached to the inner surface of the glass isolation cover 114 .

In the embodiment of the present application, the isolation cover 114 is a glass isolation cover 114 . The glass isolation cover 114 has good light transmission, corrosion resistance and wear resistance, and can effectively protect the optical fiber temperature sensing element 110 . At the same time, the optical fiber temperature sensing element 110 is attached to the inner surface of the glass isolation cover 114, so that the temperature of the aerosol-generating matrix can be collected more accurately, and the accuracy of temperature collection can be improved.

In some embodiments of the present application, the fiber optic temperature sensing probe 1102 is a cylindrical fiber optic temperature sensing probe 1102, and the diameter of the cylindrical fiber optic temperature sensing probe 1102 is greater than or equal to 0.2 mm and less than or equal to 3 mm.

In the embodiment of the present application, the optical fiber temperature sensing probe 1102 is specifically a cylindrical optical fiber temperature sensing probe 1102, and its diameter ranges from 0.2mm to 3mm. On the one hand, it can reduce the volume of the aerosol generating device 100; More optical fiber temperature sensing probes 1102 are arranged in the volume to improve the accuracy of temperature detection.

In some embodiments of the present application, the temperature range of the optical fiber temperature sensing element 110 is: -20°C to 400°C.

In the embodiment of the present application, for the aerosol generating device 100, when the temperature of the aerosol generated by atomization is in the range of 160°C-180°C, it can have a larger amount of smoke and a sense of satisfaction. Therefore, the temperature measurement range of the optical fiber temperature sensing element 110 is within the range of -20° C. to 400° C., which can effectively cover the temperature range of the aerosol-generating substrate.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , in some embodiments of the present application, the microwave assembly 108 includes: a microwave introduction part 1082 disposed on the side wall of the housing 102 , and the microwave introduction part 1082 communicates with the resonant cavity 104 The microwave emission source 1084 is connected with the microwave introduction part 1082, and the microwave output by the microwave emission source 1084 is fed into the resonant cavity 104 through the microwave introduction part 1082, so that the microwave is along the second end of the resonant column 112 to the first end of the resonant column 112 direction conduction.

In the embodiment of the present application, the microwave assembly 108 includes a microwave emission source 1084 and a microwave introduction part 1082 . The microwave emission source 1084 is used to generate microwaves, and the microwave introduction portion 1082 provided on the side wall of the housing 102 is used to transport the microwaves generated by the microwave emission source 1084 into the resonant cavity 104 . After the microwave is fed into the resonant cavity 104 through the microwave introduction part 1082, the microwave can be conducted along the direction from the second end of the resonant column 112 to the first end of the resonant column 112, so that the microwave can directly act on the aerosol-generating matrix and improve the aerosol density. Produces the atomization effect of the substrate.

In some embodiments of the present application, it includes: a first introduction part 10822, which is arranged on the side wall of the housing 102, and the first introduction part 10822 is connected with the microwave emission source 1084; a second introduction part 10824, the second introduction part 10824 The first end is connected with the first introduction part 10822 , the second introduction part 10824 is located in the resonance cavity 104 , and the second end of the second introduction part 10824 faces the bottom wall of the resonance cavity 104 .

In the embodiment of the present application, the microwave introduction part 1082 is a two-stage structure, which includes a first introduction part 10822 and a second introduction part 10824. The first introduction part 10822 is used to guide the microwave generated by the microwave emission source 1084 The extending direction of the part 10822 is transmitted to the resonant cavity 104 , and the microwave is further transmitted to the installation part 106 through the second introducing part 10824 .

Specifically, the first introduction part 10822 is pierced through the side wall of the housing 102, and the first end of the first introduction part 10822 is connected to the microwave emission source 1084, so that the microwave generated by the microwave emission source 1084 passes through the first end of the first introduction part 10822. One end enters the microwave introduction part 1082 . The second end of the first introduction part 10822 is connected with the first end of the second introduction part 10824 , and the second end of the second introduction part 10824 faces the bottom wall of the resonance cavity 104 . After the microwaves are conducted through the first introduction part 10822 and the second introduction part 10824, the microwaves are conducted from the bottom wall of the resonant cavity 104 to the aerosol generating substrate for microwave heating and atomization.

Wherein, the first introduction part is arranged coaxially with the microwave output end of the microwave emission source 1084, and the second introduction part has a horizontal introduction part and a vertical introduction part, and the axis of the horizontal introduction part is parallel to the bottom wall of the resonant cavity 104, and the vertical introduction part The axis of the part is perpendicular to the bottom wall of the resonant cavity 104 . The horizontal introduction part is connected with the vertical introduction part through the bending part, and the horizontal introduction part is arranged coaxially with the first introduction part. By setting the microwave introduction part 1082 in the above manner, all the microwaves generated by the microwave emission source 1084 can enter the resonant cavity 104 and be conducted in the resonant cavity 104 through the resonant column 112 .

In some embodiments of the present application, the microwave introduction part 1082 includes: a third introduction part disposed on the side wall of the housing 102, the first end of the third introduction part is connected to the microwave emission source 1084, the first end of the third introduction part Two ends face the resonant column 112 .

In the embodiment of the present application, the third introduction part is arranged coaxially with the microwave output end of the microwave emission source 1084, the first end of the third introduction part is connected to the microwave emission source 1084, and the second end of the third introduction part faces the resonance column 112, by setting the third introduction part coaxially with the microwave output end of the microwave emission source 1084, and the third introduction part is connected with the resonant column 112, directly conducting the microwave to the resonant column 112, so that the microwave output from the microwave emission source 1084 All enter the resonant cavity 104 .

In some embodiments of the present application, FIG. 8 shows the eighth structural schematic diagram of the aerosol generating device according to the embodiment of the present application. As shown in FIG. The bottom wall of the resonant cavity 104 and the second end of the second guiding member are located in the recessed portion 116 .

In the embodiment of the present application, the aerosol generating device 100 further includes a recessed part 116, the recessed part 116 is arranged on the bottom wall of the resonant cavity 104, and the recessed part 116 is arranged opposite to the second end of the second introduction part, and the second introduction part The second end of the second end extends into the recessed portion 116, so that the microwave entering the resonant cavity 104 can be conducted along the direction from the second end to the first end of the resonant column 112, reducing energy loss during the microwave transmission process.

It should be clear that in the claims, specification and drawings of this application, the term "plurality" refers to two or more, unless otherwise clearly defined, the terms "upper" and "lower" The orientation or positional relationship indicated by ", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of more conveniently describing the application and making the description process easier, not to indicate or imply that the referred device or element must have described in a particular orientation, constructed, and operative in a particular orientation, and therefore these descriptions are not to be construed as limitations on this application; the terms "connected," "mounted," "fixed," etc. It can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or a passing connection between multiple objects Intermediaries are indirectly connected. Those skilled in the art can understand the specific meanings of the above terms in this application according to the specific situation of the above data.

In the claims, specification and drawings of this application, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present application. In the claims, description and drawings of this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

An aerosol generating device, comprising:

A housing, the housing is provided with a resonant cavity;

The installation part is arranged on the housing, located at the first end of the resonant cavity, and is used to accommodate the aerosol generating matrix;

a microwave component, connected to the housing, for emitting microwaves into the resonant cavity to heat the aerosol-generating substrate to generate aerosol;

An optical fiber temperature-sensing element is arranged in the resonant cavity for detecting the temperature of the aerosol-generating substrate, and at least part of the optical fiber temperature-sensing element is passed through the installation part.
The aerosol generating device according to claim 1, wherein a through hole communicating with the resonant cavity is provided on the installation part, and at least part of the optical fiber temperature sensing element passes through the through hole.
The aerosol generating device according to claim 2, wherein the optical fiber temperature sensing element comprises N optical fiber temperature sensing probes;

The number of the through holes is N, and the N through holes correspond to the N optical fiber temperature probes one by one, wherein N is an integer greater than 1.
The aerosol generating device according to claim 3, further comprising:

The resonant post is located in the resonant cavity, the first end of the resonant post is connected to the installation part, and the second end of the resonant post is connected to the second end of the resonant cavity.
The aerosol generating device according to claim 4, wherein,

The resonant cavity is a cylindrical resonant cavity, the mounting part is a hollow cylindrical mounting part, and the cylindrical resonant cavity and the cylindrical mounting part are arranged coaxially;

The resonant column is arranged coaxially with the cylindrical resonant cavity.
The aerosol generating device according to claim 4, wherein the resonant column includes a cavity, and the cavity penetrates the resonant column along the axial direction of the resonant column.
The aerosol generating device according to claim 6, further comprising:

a controller for controlling the microwave assembly based on the temperature of the aerosol-generating substrate;

The optical fiber temperature sensing element also includes:

A transmission line is located in the cavity, and the transmission line connects the optical fiber temperature probe and the controller.
The aerosol generating device according to claim 4, wherein the resonant column is a conductive resonant column.
The aerosol generating device according to claim 4, wherein the resonant column is a metal resonant column.
The aerosol generating device according to claim 4, wherein the resonant column comprises:

cylinder;

A first metal thin film layer, the first metal thin film layer covers the outer sidewall of the column.
The aerosol generating device according to claim 1, wherein the housing comprises:

the first shell;

The inner casing is connected with the first outer casing and located in the first outer casing, the inner casing is made of metal, and the resonant cavity is located in the inner casing.
The aerosol generating device according to claim 1, wherein the housing comprises:

second shell;

The conductive layer covers the inner sidewall of the second outer casing, the outer side of the conductive layer is connected to the second outer casing, and the resonant cavity is located inside the conductive layer.
The aerosol generating device according to any one of claims 1 to 12, further comprising:

The isolation cover is arranged on the installation part, and the isolation cover is sleeved on the part where the optical fiber temperature sensing element passes through the installation part.
The aerosol generating device according to claim 13, wherein the isolation cover is a glass isolation cover, and the optical fiber temperature sensing element is attached to the inner surface of the glass isolation cover.
The aerosol generating device according to any one of claims 3 to 10, wherein the optical fiber temperature sensing probe is a cylindrical optical fiber temperature sensing probe, and the diameter of the cylindrical optical fiber temperature sensing probe is greater than or equal to 0.2 mm, and less than or equal to 3mm.
The aerosol generating device according to claim 15, wherein the range of the diameter of the cylindrical optical fiber temperature sensing probe is greater than or equal to 0.5 mm and less than or equal to 1 mm.
The aerosol generating device according to any one of claims 1 to 12, wherein the temperature measuring range of the optical fiber temperature sensing element is: -20°C to 400°C.
The aerosol generating device according to any one of claims 4 to 10, wherein the microwave assembly comprises:

A microwave introduction part is arranged on the side wall of the housing, and the microwave introduction part communicates with the resonant cavity;

The microwave emission source is connected to the microwave introduction part, and the microwave output by the microwave emission source is fed into the resonant cavity through the microwave introduction part, so that the microwave goes to the resonator along the second end of the resonance column. The direction of the first end of the column conducts.
The aerosol generating device according to claim 18, wherein the microwave introduction part comprises:

A first introduction part is arranged on the side wall of the housing, and the first introduction part is connected with the microwave emission source;

A second introduction part, the first end of the second introduction part is connected to the first introduction part, the second introduction part is located in the resonant cavity, and the second end of the second introduction part faces the bottom wall of the resonator.
The aerosol generating device according to claim 18, wherein the microwave introduction part comprises:

The third introduction part is arranged on the side wall of the housing, the first end of the third introduction part is connected with the microwave emission source, and the second end of the third introduction part faces the resonant column.
The aerosol generating device according to claim 19, further comprising:

The recessed part is arranged on the bottom wall of the resonant cavity, and the second end of the second introduction part is located in the recessed part.