JP7488919B2 - Aerosol Generator - Google Patents

Description

The present invention belongs to the technical field of electronic atomization, and more specifically, to an aerosol generating device.

A non-combustion/heating (HNB) device is an electronic device that heats an aerosol-generating substrate (a treated plant leaf product) without burning it. A non-combustion/heating device heats the aerosol-generating substrate to a high temperature that can generate aerosols but does not result in combustion, allowing the aerosol-generating substrate to generate the aerosol desired by the user, without burning the substrate.

Currently, HNB devices on the market mainly adopt a resistance heating method. That is, a central heating tip or a heating needle is inserted into the aerosol-generating substrate from the center to heat it. Such devices require preheating before use, so the standby time is long and inhalation and stopping cannot be performed freely. In addition, the aerosol-generating substrate is unevenly carbonized and the baking of the aerosol-generating substrate is insufficient, so the utilization rate is low. In addition, the heating tip of the HNB device is prone to causing dirt on the aerosol-generating substrate removal device and the heating tip base, making cleaning difficult. In addition, the temperature of the aerosol-generating substrate in contact with the heating element rises too high, causing partial decomposition, and releasing unnecessary substances. Therefore, microwave heating technology is gradually replacing the resistance heating method as a new heating method. Microwave heating technology has the characteristics of being efficient, rapid, selective, and without delay in heating, and has a heating effect only on materials with specific dielectric properties. The application advantages of adopting atomization by microwave heating include the following:

a. Microwave heating is radiation heating, not thermal conduction, so it is possible to achieve instant inhalation and instant stopping.

b. Since it does not have a heat generating tip, there are no problems with chip breakage or cleaning the heat generating tip.

c. The utilization rate of the aerosol-generating substrate is high, and the consistency of the draw is high, resulting in a draw that is more similar to that of a cigarette.

In addition, when controlling the heating temperature, the resistance heating type HNB device achieves the purpose of temperature control by feeding back, measuring and controlling the current or voltage output with a thermocouple. However, the electrical parameters of the heating chip have very high requirements for consistency and accuracy, and the temperature control accuracy is poor, so the temperature control is inaccurate and unnecessary substances are likely to be generated. On the other hand, in the case of the microwave heating type HNB device, microwave heating generates a strong electromagnetic field. Therefore, when measuring the temperature with a general temperature sensor in a strong electromagnetic field, the temperature measurement probe and conductor made of a metal material generate an induced current in the high-frequency electromagnetic field. Then, due to the skin effect and eddy current effect, the temperature of them themselves rises and sparks are easily generated, which seriously interferes with the temperature measurement. This causes a large error in the temperature indication value and makes it impossible to perform stable temperature measurement.

The present invention aims to solve one of the technical problems existing in the prior art or related art.

Therefore, the present invention provides an aerosol generating device.

In view of the above, the present invention provides an aerosol generating device. The aerosol generating device includes a housing in which a resonant cavity is provided, a mounting part provided in the housing and located at a first end of the resonant cavity and used to accommodate an aerosol-generating substrate, a microwave assembly connected to the housing and used to generate an aerosol by heating the aerosol-generating substrate by emitting microwaves into the resonant cavity, and an optical fiber temperature sensor provided in the resonant cavity and used to detect the temperature of the aerosol-generating substrate, at least a portion of which is inserted into the mounting part.

In this technical solution, the aerosol generating device includes a device such as an "electronic cigarette". The housing is the main frame of the aerosol generating device. A resonant cavity is formed inside the housing, and a microwave assembly is installed that is connected to the housing. Furthermore, a mounting part is installed on the housing. The mounting part is installed at a first end of the resonant cavity. The mounting part is also used to accommodate an aerosol generating substrate.

During the operation of the aerosol generating device, the microwave assembly is capable of generating microwaves and emitting the microwaves into the resonant cavity, which heats and atomizes the aerosol generating substrate attached to the attachment portion, forming an aerosol that is inhaled by the user.

The material of the mounting part is specifically an insulating material with low dielectric loss. Specifically, the material of the mounting part can be PTFE (Poly tetrafluoroethylene), microwave-transmitting ceramics, etc.

The aerosol generator further includes an optical fiber temperature sensor. The optical fiber temperature sensor mainly includes an optical fiber structure, and the optical fiber serves as a temperature collection sensor and a signal transmission path, and temperature detection is achieved by utilizing an optical signal scattered backward from the temperature field in the space in which the optical fiber exists. Since no metal probe or metal cable is installed in the optical fiber temperature sensor, it has characteristics such as extremely strong resistance to electromagnetic field interference, fast response time, stable performance, long life, corrosion resistance, and small volume.

By installing an optical fiber temperature-sensing member to collect the temperature of the aerosol-generating substrate, the temperature information collected will be more accurate and the response speed to temperature changes will be faster, since it will not be affected by the microwave field in the resonant cavity. In addition, the signal transmission speed of optical fiber is significantly faster than that of ordinary cables. Therefore, the microwave assembly can be controlled to quickly adjust the microwave power by feeding back the exact temperature of the aerosol-generating substrate at a very high speed. This allows the aerosol-generating substrate to be atomized at an appropriate temperature, which firstly prevents the generation of unnecessary substances due to inappropriate temperature. Secondly, the atomization efficiency is improved and the waste of substrate is reduced, which effectively improves the experience of using aerosol-generating devices such as electronic cigarettes.

In addition, the aerosol generating device in the above technical solution provided by the present invention may further have the following technical features:

In the above technical solution, the mounting part has a through hole communicating with the resonant cavity, and at least a portion of the optical fiber temperature sensor is inserted into the through hole.

In this technical solution, the optical fiber temperature-sensing member mainly includes an optical fiber structure. A through hole communicating with the resonant cavity is provided in the mounting part so that the optical fiber temperature-sensing member can be inserted into the mounting part to contact the aerosol-generating substrate. The optical fiber structure passes through the resonant cavity and the through hole on the mounting part, and at least a part of the optical fiber structure contacts the aerosol-generating substrate. This allows the actual temperature of the aerosol-generating substrate to be accurately identified, so that the aerosol generating device can control the operating power of the microwave assembly based on the actual temperature of the aerosol-generating substrate. Therefore, the aerosol-generating substrate can be atomized at an appropriate temperature, ensuring the atomization efficiency and preventing the generation of unnecessary substances.

In any of the above technical solutions, the optical fiber temperature sensor includes N optical fiber temperature sensor probes. The number of through holes is N, and the N through holes correspond one-to-one to the N optical fiber temperature sensor probes. N is an integer greater than 1.

In this technical solution, the optical fiber temperature sensor includes a plurality of optical fiber temperature sensor probes, specifically N optical fiber temperature sensor probes. Specifically, one optical fiber temperature sensor probe can be one optical fiber harness. In addition, corresponding to the N optical fiber temperature sensor probes, the mounting part is further provided with N through holes that correspond one-to-one to the N optical fiber temperature sensor probes. Each of the N optical fiber temperature sensor probes is inserted into the mounting part through a corresponding through hole. This makes it possible to collect temperatures at different locations on the aerosol-generating substrate, and thus monitor and control the overall temperature change curve of the aerosol-generating substrate during heating and atomization in real time.

Therefore, the aerosol generating device provided in the embodiment of the present invention can, firstly, better control the heating by the microwave assembly, thereby preventing the reduction in atomization efficiency caused by local temperatures being too high or too low. Secondly, it is advantageous for designers to explore the distribution of microwaves in the resonant cavity of the aerosol generating device based on the overall temperature change of the aerosol-generating substrate during heating and atomization. This is advantageous for designers to adjust the operating parameters of the microwave assembly to obtain a more uniform microwave field distribution. This allows the aerosol generating device (e.g., an electronic cigarette) to better uniformly heat the aerosol-generating substrate (e.g., a tobacco capsule used in combination with an electronic cigarette) and sufficiently atomize it.

In any of the above technical solutions, the aerosol generating device further includes a resonant rod located within the resonant cavity. A first end of the resonant rod is connected to the mounting portion. A second end of the resonant rod is connected to the second end of the resonant cavity.

In this technical solution, a resonant rod used in combination with a microwave assembly is installed in the resonant cavity of the aerosol generating device. Specifically, the resonant rod is used to resonate and transmit the microwaves emitted from the microwave assembly. Thus, the microwaves introduced into the resonant cavity by the microwave assembly are transmitted from the second end of the resonant rod to the first end of the resonant rod, and the aerosol generating substrate on the mounting part is microwave-heated and atomized into an aerosol.

The aerosol generating substrate is isolated from the resonant cavity by the mounting part. This prevents aerosols generated by atomization, liquid waste, and solid waste from entering the resonant cavity, and prevents breakdowns due to contamination of the resonant cavity by waste.

In any of the above technical solutions, the resonant cavity is a cylindrical resonant cavity, and the mounting part is a cylindrical mounting part. The cylindrical resonant cavity and the cylindrical mounting part are installed coaxially, and the resonant rod and the cylindrical resonant cavity are installed coaxially.

In this technical solution, both the resonant cavity and the mounting part are installed in a cylindrical shape. Therefore, firstly, the utilization rate of the internal space can be effectively improved, and the overall volume of the device can be reduced, thereby realizing the miniaturization of the aerosol generator. Secondly, the overall strength of each structure in the aerosol generator can be improved.

In addition, since the cylindrical resonant cavity and the cylindrical mounting part are installed coaxially, and the resonant rod and the cylindrical resonant cavity are installed coaxially, it is possible to ensure that the microwaves transmitted to the aerosol-generating substrate via the resonant rod are transmitted to the central position of the aerosol-generating substrate. This improves the uniformity of heating of the aerosol-generating substrate by the microwaves, thereby avoiding the situation where the heat received by the aerosol-generating substrate becomes uneven due to the concentration of microwaves. Therefore, the atomization efficiency is further improved, and the atomization effect of the aerosol-generating substrate is guaranteed.

In any of the above technical solutions, the resonant rod includes a cavity. The cavity passes through the resonant rod along the axial direction of the resonant rod.

Specifically, in this technical solution, the resonant rod has a hollow "tubular" structure. The optical fiber temperature sensing probe can be inserted into the resonant rod. This allows the optical fiber temperature sensing probe to be fixed and protected by the resonant rod, thereby preventing damage to the optical fiber temperature sensing probe.

In any of the above technical solutions, the aerosol generating device further includes a controller for controlling the microwave assembly based on the temperature of the aerosol generating substrate. The optical fiber temperature sensing member further includes a transmission line located within the cavity. The transmission line connects the optical fiber temperature sensing probe to the controller.

In this technical solution, the aerosol generating device further includes a controller. The controller can control the operation of the microwave assembly based on the user's inhalation action, and control the operation parameters of the microwave assembly, such as microwave power, microwave duty ratio, etc., based on the collected aerosol-generating substances.

The optical fiber temperature-sensing member includes a transmission line (specifically, an optical fiber harness). One end of the transmission line is connected to the optical fiber temperature-sensing probe, and the other end is connected to the controller. The optical fiber temperature-sensing probe transmits collected temperature data to the controller , and the controller adjusts the operating parameters of the microwave assembly based on the temperature of the aerosol-generating substrate. As a result, the aerosol-generating substrate is atomized at an appropriate temperature, which firstly prevents the generation of unnecessary substances due to an inappropriate temperature. Secondly, the atomization efficiency is improved and the waste of substrate is reduced, which effectively improves the user experience of the aerosol-generating device, such as an electronic cigarette.

In any of the above technical solutions, the resonant rod is a conductive resonant rod.

In this technical solution, the resonant rod is used to resonate and transmit the microwaves emitted from the microwave assembly. Thus, the microwaves introduced into the resonant cavity by the microwave assembly are transmitted from the second end of the resonant rod to the first end of the resonant rod, and the aerosol-generating substrate on the mounting part is microwave-heated and atomized into an aerosol.

To meet the resonance requirements, the outer surface of the resonant rod needs to be conductive. Therefore, the material of the resonant rod is a conductive material. That is, the resonant rod is a conductive resonant rod, and the material is preferably a metal, such as copper, iron, aluminum, silver, gold, or an alloy of the above metals. In some embodiments, the material of the conductive resonant rod may be carbon or an allotrope of carbon, and this is not a limitation of the embodiments of the present invention.

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

In this technical solution, the resonant rod is a metal resonant rod. Specifically, the resonant rod is used to resonate and transmit the microwaves emitted from the microwave assembly. Thus, the microwaves introduced into the resonant cavity by the microwave assembly are transmitted from the second end of the resonant rod to the first end of the resonant rod, and the aerosol-generating substrate on the mounting part is microwave-heated and atomized into an aerosol.

To meet the resonance requirements, the outer surface of the resonant rod must be conductive. Therefore, the material of the resonant rod is a metal material, such as copper, iron, aluminum, silver, gold, or alloys of the above metals.

In any of the above technical solutions, the resonant rod includes a rod body and a first metal thin film layer covering the outer wall of the rod body.

In this technical solution, specifically, the resonant rod includes a rod body and a first metal thin film layer. The resonant rod is used to resonate and transmit the microwaves emitted from the microwave assembly. Thus, the microwaves introduced into the resonant cavity by the microwave assembly are transmitted from the second end of the resonant rod to the first end of the resonant rod, and the aerosol-generating substrate on the mounting part is microwave-heated and atomized into an aerosol.

To meet the resonance requirements, the outer surface of the resonating rod needs to be conductive. Therefore, a thin metal layer covering the rod body is installed on the outer wall of the rod body, making the outer surface of the resonating rod conductive. This makes it possible to achieve the function of resonating and transmitting microwaves emitted from the microwave assembly.

As can be appreciated, the metal thin film layer can be a single metal or a metal alloy. Preferably, the metal thin film layer can be copper, iron, aluminum, silver, gold, or an alloy of the above metals.

In any of the above technical solutions, the housing includes a first outer housing and an inner housing connected to the first outer housing and located within the first outer housing. The inner housing is made of a metal material, and the resonant cavity is located within the inner housing.

In this technical solution, a resonant cavity is formed inside the housing. Since the cavity wall of the resonant cavity is conductive, the microwaves generated by the microwave assembly are confined within the resonant cavity, preventing the microwaves from leaking to the outside. 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 a metal material. The inner housing is connected to the outer housing on the inside of the first outer housing. In addition, the inner housing has a hollow structure, and a resonant cavity is formed inside. Since the inner housing is made of a metal material, the microwaves generated by the microwave assembly can be confined within the resonant cavity. This prevents the microwaves from diffusing into the external environment, ensuring the safety of the aerosol generator in use.

In addition, the double structure of the first outer housing and the inner housing allows the first outer housing to be made of an insulating material, further ensuring the safety of the aerosol generator during use.

The material of the inner housing can be copper, iron, aluminum, silver, gold, or an alloy of the above metals. However, the present invention is not limited to this.

In any of the above technical solutions, the housing includes a second outer housing and a conductive layer covering the inner wall 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 housing. Since the cavity wall of the resonant cavity is conductive, the microwaves generated by the microwave assembly are confined within the resonant cavity, preventing leakage of the microwaves to the outside. Specifically, the housing includes a second outer housing and a conductive layer. The conductive layer forms a conductive shielding layer by covering the inner wall of the second outer housing. This makes it possible to confine the microwaves generated by the microwave assembly within the resonant cavity formed by being surrounded by the conductive layer, so that the microwaves cannot diffuse into the external environment, ensuring the safety of the use of the aerosol generating device.

In addition, the double structure of the second outer housing and the inner housing allows the second outer housing to be made of an insulating material, further ensuring the safety of the aerosol generator during use.

Preferably, the conductive layer is a metal conductive layer. The material of the conductive layer can be copper, iron, aluminum, silver, gold, or an alloy material of the above metals. However, the present invention is not limited to this.

In any of the above technical solutions, the aerosol generating device further includes an isolation cover provided on the mounting part. The isolation cover covers the portion of the optical fiber temperature sensor that is inserted into the mounting part.

In this technical solution, an isolation cover is installed on the mounting part. The isolation cover is installed corresponding to the through hole of the mounting part and covers the optical fiber temperature sensor. Specifically, the optical fiber temperature sensor is covered by the isolation cover after being inserted into the through hole of the mounting part. The isolation cover isolates the optical fiber temperature sensor and the resonant cavity from the aerosol-generating substrate, thereby preventing the optical fiber temperature sensor from directly contacting the aerosol-generating substrate. This prevents liquid substances and other contaminants generated after atomization of the aerosol-generating substrate from contaminating the temperature sensor, thereby improving the service life and measurement accuracy of the optical fiber temperature sensor.

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 member is in close contact with the inner surface of the glass isolation cover.

In this technical solution, the isolation cover is a glass isolation cover. The glass isolation cover has good light transmittance, is corrosion-resistant and abrasion-resistant, and can effectively protect the optical fiber temperature sensor. In addition, the optical fiber temperature sensor is in close contact with the inner surface of the glass isolation cover, so that the temperature of the aerosol-generating substrate can be collected more accurately, and the accuracy of temperature collection is improved.

In any of the above technical solutions, the optical fiber temperature sensor is a cylindrical optical fiber temperature sensor. The diameter of the cylindrical optical fiber temperature sensor is in the range of 0.2 mm to 3 mm.

In this technical solution, specifically, the optical fiber temperature sensor is a cylindrical optical fiber temperature sensor, and the diameter ranges from 0.2 mm to 3 mm. This allows, firstly, to reduce the volume of the aerosol generating device. Secondly, it allows more optical fiber temperature sensor probes to be installed in a limited volume, improving the accuracy of temperature detection.

In any of the above technical solutions, the temperature measurement range of the optical fiber temperature sensor is -20°C to 400°C.

In this technical solution, an aerosol generating device such as an "electronic cigarette" can produce a large amount of vapor and a sense of satisfaction when the temperature of the aerosol generated by atomization is in the range of 160°C to 180°C. Therefore, if the temperature measurement range of the optical fiber temperature-sensing member is within the range of -20°C to 400°C, it 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 installed on the side wall of the housing and communicating with the resonant cavity, and a microwave emission source connected to the microwave introduction part. Microwaves output from the microwave emission source are introduced into the resonant cavity via the microwave introduction part. Then, the microwaves are transmitted in a direction from the second end of the resonant rod toward the first end of the resonant rod.

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. The microwave introduction part installed on the side wall of the housing is used to transport the microwaves generated by the microwave emission source into the resonant cavity. The microwaves are introduced into the resonant cavity via the microwave introduction part. The microwaves can then be transmitted in a direction from the second end of the resonant rod toward the first end of the resonant rod. This allows the microwaves to act directly on the aerosol-generating substrate, improving the atomization effect of the aerosol-generating substrate.

Any of the above technical solutions includes a first introduction member installed on a side wall of the housing and connected to a microwave emission source, and a second introduction member having a first end connected to the first introduction member. The second introduction member is located within the resonant cavity, and a second end of the second introduction member faces the bottom wall of the resonant cavity.

In this technical solution, the microwave introduction section includes a first introduction member and a second introduction member. The first introduction member is inserted into the side wall of the housing. A first end of the first introduction member is connected to a microwave emission source, and microwaves generated by the microwave emission source are allowed to enter the microwave introduction section from the first end of the first introduction member. A second end of the first introduction member is connected to a first end of the second introduction member, and the second end of the second introduction member faces the bottom wall of the resonant cavity. After being transmitted via the first introduction member and the second introduction member, the microwaves are transmitted from the bottom wall of the resonant cavity to the aerosol generating substrate, where they are atomized by microwave heating.

The first introduction member is installed coaxially with the microwave output end of the microwave emission source. The second introduction member has a horizontal introduction section and a vertical introduction section. The axis of the horizontal introduction section is parallel to the bottom wall of the resonant cavity, and the axis of the vertical introduction section is perpendicular to the bottom wall of the resonant cavity. The horizontal introduction section is connected to the vertical introduction section via a bent section. In addition, the horizontal introduction section is installed coaxially with the first introduction member. By installing the microwave introduction section in the above manner, it is possible to cause all microwaves generated by the microwave emission source to enter the resonant cavity and transmit them within the resonant cavity by the resonant rod.

In any of the above technical solutions, the microwave introduction section includes a third introduction member installed on a side wall of the housing. A first end of the third introduction member is connected to the microwave emission source, and a second end of the third introduction member faces the resonant rod.

The microwave introduction section further includes a third introduction member. The third introduction member is installed coaxially with the microwave output end of the microwave emission source. A first end of the third introduction member is connected to the microwave emission source, and a second end of the third introduction member faces the resonant rod. By installing the third introduction member coaxially with the microwave output end of the microwave emission source and connecting the third introduction member to the resonant rod, microwaves are transmitted directly to the resonant rod. This allows all microwaves output from the microwave emission source to enter the resonant cavity.

In any of the above technical solutions, the aerosol generating device further includes a recess installed in the bottom wall of the resonant cavity, and the second end of the second introduction member is located within the recess.

The aerosol generating device further includes a recess. The recess is installed in the bottom wall of the resonant cavity. The recess is also installed opposite the second end of the second introduction member, and the second end of the second introduction member extends into the recess. This allows the microwaves that have entered the resonant cavity to be transmitted in a direction from the second end of the resonant rod toward the first end, thereby reducing energy loss during the microwave transmission process.

The above and/or additional aspects and advantages of the present invention will become apparent and be easily understood from the following description of the embodiments in combination with the drawings.

FIG. 1 shows a schematic structural diagram of an aerosol generating device according to an embodiment of the present invention. FIG. 2 shows a schematic structural diagram 2 of an aerosol generating device according to an embodiment of the present invention. FIG. 3 shows a schematic structural diagram of an aerosol generating device according to an embodiment of the present invention. FIG. 4 shows a schematic structural diagram of an aerosol generating device according to an embodiment of the present invention. FIG. 5 shows a schematic structural diagram of an aerosol generating device according to an embodiment of the present invention. FIG. 6 shows a schematic structural diagram 6 of an aerosol generating device according to an embodiment of the present invention. FIG. 7 shows a schematic structural diagram of an aerosol generating device according to an embodiment of the present invention. FIG. 8 shows a schematic structural diagram of an aerosol generating device according to an embodiment of the present invention.

In order to make the above-mentioned objects, features and advantages of the present invention more clearly understandable, the present invention will be described in more detail below in combination with drawings and specific embodiments. It should be noted that, if not inconsistent, the embodiments and features of the present invention may be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific examples disclosed below.

Below, aerosol generating devices based on several embodiments of the present invention will be described with reference to Figures 1 to 8.

In some embodiments of the present invention, an aerosol generating device is provided. FIG. 1 shows a schematic structural diagram 1 of an aerosol generating device according to an embodiment of the present invention. As shown in FIG. 1, the aerosol generating device 100 includes a housing 102 in which a resonant cavity 104 is provided, a mounting portion 106 provided in the housing 102, located at a first end of the resonant cavity 104, and used to accommodate an aerosol-generating substrate, a microwave assembly 108 connected to the housing 102 and used to generate aerosol by heating the aerosol-generating substrate by emitting microwaves into the resonant cavity 104, and an optical fiber temperature-sensing member 110 provided in the resonant cavity 104 and used to detect the temperature of the aerosol-generating substrate, at least a portion of which is inserted into the mounting portion 106.

In an embodiment of the present invention, the aerosol generating device 100 can be used to atomize a solid aerosol generating substrate, such as a plant leaf substrate having a desired fragrance. In addition, it is also possible to further add another aromatic component to the aerosol generating substrate. The housing 102 is a main body frame of the aerosol generating device 100. A resonant cavity 104 is formed inside the housing 102, and a microwave assembly 108 connected to the housing 102 is installed. Furthermore, a mounting part 106 is installed in the housing 102. The mounting part 106 is installed at a first end of the resonant cavity 104. In addition, the mounting part 106 is used to accommodate the aerosol generating substrate.

During the operation of the aerosol generating device 100, the microwave assembly 108 can generate microwaves and emits the microwaves into the resonant cavity 104. This heats and atomizes the aerosol generating substrate attached to the attachment portion 106, forming an aerosol that is inhaled by the user.

The material of the mounting part 106 is specifically an insulating material with low dielectric loss. Specifically, the material of the mounting part 106 can be PTFE (Poly tetrafluoroethylene), microwave-transmitting ceramics, etc.

The aerosol generating device 100 further includes an optical fiber temperature sensor 110. The optical fiber temperature sensor 110 mainly includes an optical fiber structure, and uses the optical fiber as a temperature collection sensor and signal transmission path, and realizes temperature detection by utilizing an optical signal scattered backward from the temperature field in the space in which the optical fiber exists. Since the optical fiber temperature sensor 110 does not have a metal probe or metal cable installed, it has characteristics such as very strong resistance to electromagnetic field interference, fast response time, stable performance, long life, corrosion resistance, and small volume.

By installing the optical fiber temperature-sensing member 110 to collect the temperature of the aerosol-generating substrate, the temperature information collected is not affected by the microwave field in the resonant cavity 104, so that the temperature information collected is more accurate and the response speed to temperature changes is faster. In addition, the signal transmission speed of the optical fiber is significantly faster than that of a general cable. Therefore, the microwave assembly 108 can be controlled to quickly adjust the microwave power by feeding back the accurate temperature of the aerosol-generating substrate at a very high speed. This allows the aerosol-generating substrate to be atomized at an appropriate temperature, which firstly prevents the generation of unnecessary substances due to inappropriate temperature. In addition, secondly, the atomization efficiency is improved and the waste of substrate is reduced, which effectively improves the user experience of the aerosol generating device 100 such as an electronic cigarette.

In addition, the aerosol generating device 100 in the above technical solution provided by the present invention may further have the following technical features:

In some embodiments of the present invention, the mounting portion 106 is provided with a through hole 1062 that communicates with the resonant cavity 104, and at least a portion of the optical fiber temperature sensor 110 is inserted through the through hole 1062.

In the embodiment of the present invention, the optical fiber temperature sensor 110 mainly includes an optical fiber structure. In order to allow the optical fiber temperature sensor 110 to be inserted into the mounting part 106 and contact the aerosol-generating substrate, the mounting part 106 is provided with a through hole 1062 communicating with the resonant cavity 104. The optical fiber structure passes through the through hole 1062 on the resonant cavity 104 and the mounting part 106, and at least a part of the optical fiber structure contacts the aerosol-generating substrate. This allows the actual temperature of the aerosol-generating substrate to be accurately identified, so that the aerosol generating device 100 can control the operating power of the microwave assembly 108 based on the actual temperature of the aerosol-generating substrate. Therefore, the aerosol-generating substrate can be atomized at an appropriate temperature, ensuring the atomization efficiency and preventing the generation of unnecessary substances.

In some embodiments of the present invention, FIG. 2 shows a schematic structural diagram 2 of an aerosol generating device based on an embodiment of the present invention. As shown in FIG. 2, the optical fiber temperature sensor 110 includes N optical fiber temperature sensor probes 1102. The number of through holes 1062 is N, and the N through holes 1062 and the N optical fiber temperature sensor probes 1102 correspond one-to-one. Note that N is an integer greater than 1.

In an embodiment of the present invention, the optical fiber temperature sensor 110 includes a plurality of optical fiber temperature sensor probes 1102, specifically N optical fiber temperature sensor probes 1102. Specifically, one optical fiber temperature sensor probe 1102 can be one optical fiber harness. In addition, N through holes 1062 corresponding to the N optical fiber temperature sensor probes 1102 are further installed in the mounting part 106. Each probe of the N optical fiber temperature sensor probes 1102 is inserted into the mounting part 106 through a corresponding one of the through holes 1062. This makes it possible to collect temperatures at different locations in the aerosol-generating substrate, and therefore makes it possible to monitor and control the overall temperature change curve of the aerosol-generating substrate during heating and atomization in real time.

Therefore, the aerosol generating device 100 provided in the embodiment of the present invention can, firstly, better control the heating by the microwave assembly 108, thereby preventing a decrease in atomization efficiency due to a temperature that is too high or too low in some areas. Secondly, it is advantageous for designers to explore the microwave distribution status in the resonant cavity 104 of the aerosol generating device 100 based on the overall temperature change of the aerosol-generating substrate during heating and atomization. This is advantageous for designers to adjust the operating parameters of the microwave assembly 108 to obtain a more uniform microwave field distribution. As a result, the aerosol generating device 100 can better heat the aerosol-generating substrate uniformly and sufficiently atomize it.

1 , in some embodiments of the present invention, the aerosol generating device 100 further includes a resonant rod 112 located within the resonant cavity 104. A first end of the resonant rod 112 is connected to the mounting portion 106. A second end of the resonant rod 112 is connected to the second end of the resonant cavity 104.

In an embodiment of the present invention, a resonant rod 112 used in combination with a microwave assembly 108 is installed in the resonant cavity 104 of the aerosol generating device 100. Specifically, the resonant rod 112 is used to resonate and transmit microwaves emitted from the microwave assembly 108. As a result, the microwaves introduced into the resonant cavity 104 by the microwave assembly 108 are transmitted from the second end of the resonant rod 112 to the first end of the resonant rod 112, and the aerosol generating substrate on the mounting portion 106 is microwave-heated and atomized to form an aerosol.

The aerosol generating substrate is isolated from the resonant cavity 104 by the mounting portion 106. This makes it possible to prevent the aerosol generated by atomization, liquid waste, and solid waste from entering the resonant cavity 104, and prevents failures due to contamination of the resonant cavity 104 by waste.

As shown in Figures 1, 2 and 3, in some embodiments of the present invention, the resonant cavity 104 is a cylindrical resonant cavity and the mounting portion 106 is a hollow cylindrical mounting portion 106. The cylindrical resonant cavity 104 and the hollow cylindrical mounting portion 106 are coaxially mounted. Also, the resonant rod 112 and the cylindrical resonant cavity 104 are coaxially mounted.

In an embodiment of the present invention, as shown in FIG. 2, the mounting portion 106 has a hollow cylindrical structure. One end of the mounting portion 106 adjacent to the resonant cavity 104 is provided with a bottom wall, which separates the mounting portion 106 from the resonant cavity 104. The optical fiber temperature sensor 110 is installed on the bottom wall. A plurality of through holes 1062 are provided on the bottom wall of the resonant cavity 104. The plurality of through holes 1062 are uniformly distributed on the bottom wall of the resonant cavity 104. The optical fiber temperature sensor 110 corresponds one-to-one to the through holes 1062. After the optical fiber temperature sensor probe 1102 of the optical fiber temperature sensor 110 is inserted into the through hole 1062, a portion of the optical fiber temperature sensor enters the resonant cavity 104.

The resonant cavity 104 and the mounting part 106 are both installed in a cylindrical shape. Therefore, firstly, the utilization rate of the internal space can be effectively improved, and the overall volume of the device can be reduced, thereby realizing a miniaturization of the aerosol generating device 100. Secondly, the overall strength of each structure in the aerosol generating device 100 can be improved.

In addition, the cylindrical resonant cavity 104 and the cylindrical mounting part 106 are installed coaxially, and the resonant rod 112 and the cylindrical resonant cavity 104 are installed coaxially, so that it is possible to ensure that the microwaves transmitted to the aerosol-generating substrate via the resonant rod 112 are transmitted to the central position of the aerosol-generating substrate. This improves the uniformity of heating of the aerosol-generating substrate by the microwaves, thereby preventing the aerosol-generating substrate from receiving uneven heat due to the concentration of microwaves. This further improves the atomization efficiency and ensures the atomization effect of the aerosol-generating substrate.

In some embodiments of the present invention, the resonant rod 112 includes a cavity 1122. The cavity 1122 extends through the resonant rod 112 along the axis of the resonant rod 112.

Specifically, in the embodiment of the present invention, the resonant rod 112 has a hollow "tubular" structure. The optical fiber temperature sensing probe 1102 can be inserted into the resonant rod 112. This allows the optical fiber temperature sensing probe 1102 to be fixed and protected by the resonant rod 112, thereby preventing damage to the optical fiber temperature sensing probe 1102.

In some embodiments of the present invention, FIG. 3 shows a schematic structural diagram 3 of an aerosol generating device according to an embodiment of the present invention, and FIG. 4 shows a schematic structural diagram 4 of an aerosol generating device according to an embodiment of the present invention. As shown in FIGS. 3 and 4, the aerosol generating device 100 further includes a controller 113 for controlling the microwave assembly 108 based on the temperature of the aerosol-generating substrate. In addition, the optical fiber temperature-sensing member 110 further includes a transmission line 1104 located in the cavity 1122. The transmission line 1104 connects the optical fiber temperature-sensing probe 1102 and the controller 113.

In an embodiment of the present invention, the aerosol generating device 100 further includes a controller 113. The controller 113 can control the operation of the microwave assembly 108 based on the inhalation action of the user, and control the operating parameters of the microwave assembly 108, such as microwave power, microwave duty ratio, etc., based on the collected aerosol-generating substrate.

The optical fiber temperature-sensing member 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. The optical fiber temperature-sensing probe 1102 transmits collected temperature data to the controller , and the controller adjusts the operating parameters of the microwave assembly 108 based on the temperature of the aerosol-generating substrate. As a result, the aerosol-generating substrate is atomized at an appropriate temperature, which firstly prevents the generation of unnecessary substances due to an inappropriate temperature. Secondly, the atomization efficiency is improved and the waste of substrate is reduced, which effectively improves the user experience of the aerosol-generating device 100, such as an electronic cigarette.

In some embodiments of the present invention, the resonant rod 112 is a conductive resonant rod 112.

In an embodiment of the present invention, the resonant rod 112 is used to resonate and transmit the microwaves emitted from the microwave assembly 108. As a result, the microwaves introduced by the microwave assembly 108 into the resonant cavity 104 are transmitted from the second end of the resonant rod 112 to the first end of the resonant rod 112, microwave heating the aerosol-generating substrate on the mounting portion 106 and atomizing it into an aerosol.

To meet the resonance requirements, the outer surface of the resonant rod 112 must be conductive. Therefore, the material of the resonant rod 112 is a conductive material. That is, the resonant rod 112 is a conductive resonant rod 112, and the material is preferably a metal, such as copper, iron, aluminum, silver, gold, or an alloy of the above metals. In some embodiments, the material of the conductive resonant rod 112 may be carbon or an allotrope of carbon, and this is not a limitation of the embodiments of the present invention.

In some embodiments of the present invention, the resonant rod 112 is a metallic resonant rod 112.

In an embodiment of the present invention, the resonant rod 112 is a metal resonant rod 112. Specifically, the resonant rod 112 is used to resonate and transmit the microwaves emitted from the microwave assembly 108. As a result, the microwaves introduced into the resonant cavity 104 by the microwave assembly 108 are transmitted from the second end of the resonant rod 112 to the first end of the resonant rod 112, and the aerosol-generating substrate on the mounting portion 106 is microwave-heated and atomized into an aerosol.

To meet the resonance requirements, the outer surface of the resonant rod 112 must be conductive. Therefore, the material of the resonant rod 112 is a metal material, such as copper, iron, aluminum, silver, gold, or an alloy of the above metals.

In some embodiments of the present invention, FIG. 5 shows a schematic structural diagram 5 of an aerosol generating device according to an embodiment of the present invention. As shown in FIG. 5, the resonant rod 112 includes a rod body 1124 and a first metal thin film layer 1126 covering the outer wall of the rod body 1124.

In the embodiment of the present invention, specifically, the resonant rod 112 includes a rod body 1124 and a first metal thin film layer 1126. The resonant rod 112 is used to resonate and transmit microwaves emitted from the microwave assembly 108. Thus, the microwaves introduced into the resonant cavity 104 by the microwave assembly 108 are transmitted from the second end of the resonant rod 112 to the first end of the resonant rod 112. Since the first end of the resonant rod 112 is close to the mounting portion 106, the aerosol-generating substrate on the mounting portion 106 is microwave-heated and atomized into an aerosol.

To satisfy the resonance requirements, the outer surface of the resonant rod 112 must be conductive. Therefore, a thin metal film layer that covers the rod body 1124 is provided on the outer wall of the rod body 1124, thereby making the outer surface of the resonant rod 112 conductive. This makes it possible to realize the function of resonating and transmitting the microwaves emitted from the microwave assembly 108.

As can be appreciated, the metal thin film layer can be a single metal or a metal alloy. Preferably, the metal thin film layer can be copper, iron, aluminum, silver, gold, or an alloy of the above metals.

In some embodiments of the present invention, FIG. 6 shows a schematic structural diagram 6 of an aerosol generating device according to an embodiment of the present invention. As shown in FIG. 6, the housing 102 includes a first outer housing 1021 and an inner housing 1022 connected to the first outer housing 1021 and located within the first outer housing 1021. The inner housing 1022 is made of a metal material, and the resonant cavity 104 is located within the inner housing 1022.

In the embodiment of the present invention, a resonant cavity 104 is formed inside the housing 102. Since the cavity wall of the resonant cavity 104 is conductive, the microwaves generated by the microwave assembly 108 are confined within the resonant cavity 104, and the microwaves are prevented from leaking to the outside. Specifically, the housing 102 includes a first outer housing 1021 and an inner housing 1022. The first outer housing 1021 may be made of an insulating material such as plastic or a metal material. The inner housing 1022 is connected to the outer housing 102 inside the first outer housing 1021. The inner housing 1022 has a hollow structure, and the resonant cavity 104 is formed inside. Since the inner housing 1022 is made of a metal material, the microwaves generated by the microwave assembly 108 can be confined within the resonant cavity 104. As a result, the microwaves cannot diffuse into the external environment, and the safety of the aerosol generating device 100 is guaranteed.

In addition, the double structure of the first outer housing 1021 and the inner housing 1022 allows the first outer housing 1021 to be made of an insulating material, further ensuring the safety of the aerosol generating device 100 during use.

The material of the inner housing 1022 can be copper, iron, aluminum, silver, gold, or an alloy of the above metals. However, the present invention is not limited to this.

In some embodiments of the present invention, FIG. 7 shows a schematic structure diagram 7 of an aerosol generating device according to an embodiment of the present invention. As shown in FIG. 7, the housing 102 includes a second outer housing 1023 and a conductive layer 1024 covering the inner wall of the second outer housing 1023. The outer side of the conductive layer 1024 is connected to the second outer housing 1023. Also, the resonant cavity 104 is located inside the conductive layer 1024.

In an embodiment of the present invention, a resonant cavity 104 is formed inside the housing 102. Since the cavity wall of the resonant cavity 104 is conductive, the microwaves generated by the microwave assembly 108 are confined within the resonant cavity 104, and the microwaves are prevented from leaking to the outside. Specifically, the housing 102 includes a second outer housing 1023 and a conductive layer 1024. The conductive layer 1024 forms a conductive shielding layer by covering the inner wall of the second outer housing 1023. As a result, the microwaves generated by the microwave assembly 108 can be confined within the resonant cavity 104 formed by being surrounded by the conductive layer 1024, so that the microwaves cannot diffuse to the external environment, and the safety of the use of the aerosol generating device 100 is guaranteed.

In addition, the double structure of the second outer housing 1023 and the conductive layer 1024 allows the second outer housing 1023 to be made of an insulating material, further ensuring the safety of the aerosol generating device 100 during use.

Preferably, the conductive layer 1024 is a metal conductive layer 1024. The material of the conductive layer 1024 can be copper, iron, aluminum, silver, gold, or an alloy material of the above metals. However, the present invention is not limited to this.

Referring to Figures 1, 2 and 3, in some embodiments of the present invention, the aerosol generating device 100 further includes an isolation cover 114 provided on the mounting portion 106. The isolation cover 114 covers the portion of the optical fiber temperature sensing member 110 that is inserted into the mounting portion 106.

In the embodiment of the present invention, an isolation cover 114 is installed on the mounting part 106. The isolation cover 114 is installed corresponding to the through hole 1062 of the mounting part 106 and covers the optical fiber temperature sensor 110. Specifically, the optical fiber temperature sensor 110 is covered by the isolation cover 114 after being inserted into the through hole 1062 of the mounting part 106. The isolation cover 114 isolates the optical fiber temperature sensor 110 and the resonant cavity 104 from the aerosol-generating substrate, thereby preventing the optical fiber temperature sensor probe 1102 from directly contacting the aerosol-generating substrate. This prevents the liquid substance and other contaminants generated after the aerosol-generating substrate from contaminating the temperature sensor probe, thereby improving the service life and measurement accuracy of the optical fiber temperature sensor.

The isolation cover 114 is a transparent isolation cover 114.

In some embodiments of the present invention, the isolation cover 114 is a glass isolation cover 114. The fiber optic temperature sensitive member 110 is in intimate contact with the inner surface of the glass isolation cover 114.

In an embodiment of the present invention, the isolation cover 114 is a glass isolation cover 114. The glass isolation cover 114 has good light transmittance, is corrosion-resistant, and is wear-resistant, and can effectively protect the optical fiber temperature sensor 110. In addition, since the optical fiber temperature sensor 110 is in close contact with the inner surface of the glass isolation cover 114, the temperature of the aerosol-generating substrate can be collected more accurately, and the accuracy of temperature collection is improved.

In some embodiments of the present invention, the fiber optic temperature probe 1102 is a cylindrical fiber optic temperature probe 1102. The diameter of the cylindrical fiber optic temperature probe 1102 ranges from 0.2 mm to 3 mm.

Specifically, in the embodiment of the present invention, the optical fiber temperature sensor 1102 is a cylindrical optical fiber temperature sensor 1102, and has a diameter in the range of 0.2 mm to 3 mm. This allows, firstly, the volume of the aerosol generating device 100 to be reduced. Secondly, since more optical fiber temperature sensor probes 1102 can be installed in a limited volume, the accuracy of temperature detection is improved.

In some embodiments of the present invention, the temperature measurement range of the optical fiber temperature sensor 110 is -20°C to 400°C.

In an embodiment of the present invention, the aerosol generating device 100 can produce a large amount of vapor and a sense of satisfaction when the temperature of the aerosol generated by atomization is in the range of 160°C to 180°C. Therefore, if the temperature measurement range of the optical fiber temperature-sensing member 110 is set to the range of -20°C to 400°C, it is possible to effectively cover the temperature range of the aerosol-generating substrate.

As shown in Figures 1, 2 and 3, in some embodiments of the present invention, the microwave assembly 108 is installed on the side wall of the housing 102 and includes a microwave introduction section 1082 that communicates with the resonant cavity 104, and a microwave emission source 1084 that is connected to the microwave introduction section 1082. The microwaves output from the microwave emission source 1084 are introduced into the resonant cavity 104 via the microwave introduction section 1082. Then, the microwaves are transmitted in a direction from the second end of the resonant rod 112 toward the first end of the resonant rod 112.

In an embodiment of the present invention, the microwave assembly 108 includes a microwave emission source 1084 and a microwave introduction section 1082. The microwave emission source 1084 is used to generate microwaves. The microwave introduction section 1082, which is installed 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. The microwaves are introduced into the resonant cavity 104 via the microwave introduction section 1082. The microwaves can then be transmitted in a direction from the second end of the resonant rod 112 toward the first end of the resonant rod 112. This allows the microwaves to act directly on the aerosol-generating substrate, improving the atomization effect of the aerosol-generating substrate.

Some embodiments of the present invention include a first introduction member 10822 mounted on a side wall of the housing 102 and connected to the microwave source 1084, and a second introduction member 10824 having a first end connected to the first introduction member 10822. The second introduction member 10824 is located within the resonant cavity 104, and a second end of the second introduction member 10824 faces the bottom wall of the resonant cavity 104.

In an embodiment of the present invention, the microwave introduction section 1082 has a two-stage structure including a first introduction member 10822 and a second introduction member 10824. The first introduction member 10822 is used to transmit the microwaves generated by the microwave emission source 1084 to the resonant cavity 104 along the extension direction of the first introduction member 10822, and to further transmit the microwaves to the mounting section 106 via the second introduction member 10824.

Specifically, the first introduction member 10822 is inserted into the side wall of the housing 102. The first end of the first introduction member 10822 is connected to the microwave emission source 1084, and the microwaves generated by the microwave emission source 1084 are introduced into the microwave introduction section 1082 from the first end of the first introduction member 10822. The second end of the first introduction member 10822 is connected to the first end of the second introduction member 10824, and the second end of the second introduction member 10824 faces the bottom wall of the resonant cavity 104. The microwaves are transmitted through the first introduction member 10822 and the second introduction member 10824, and then transmitted from the bottom wall of the resonant cavity 104 to the aerosol generating substrate, where they are atomized by microwave heating.

The first introduction member is installed coaxially with the microwave output end of the microwave emission source 1084. The second introduction member has a horizontal introduction section and a vertical introduction section. The axis of the horizontal introduction section is parallel to the bottom wall of the resonant cavity 104, and the axis of the vertical introduction section is perpendicular to the bottom wall of the resonant cavity 104. The horizontal introduction section is connected to the vertical introduction section via a bent section. In addition, the horizontal introduction section is installed coaxially with the first introduction member. If the microwave introduction section 1082 is installed in the above manner, all of the microwaves generated by the microwave emission source 1084 can enter the resonant cavity 104 and be transmitted within the resonant cavity 104 by the resonant rod 112.

In some embodiments of the present invention, the microwave introduction section 1082 includes a third introduction member that is installed on a side wall of the housing 102. A first end of the third introduction member is connected to the microwave emission source 1084, and a second end of the third introduction member faces the resonant rod 112.

In an embodiment of the present invention, the third introduction member is installed coaxially with the microwave output end of the microwave emission source 1084. A first end of the third introduction member is connected to the microwave emission source 1084, and a second end of the third introduction member faces the resonant rod 112. By installing the third introduction member coaxially with the microwave output end of the microwave emission source 1084 and connecting the third introduction member to the resonant rod 112, microwaves are directly transmitted to the resonant rod 112. This allows all of the microwaves output from the microwave emission source 1084 to enter the resonant cavity 104.

In some embodiments of the present invention, FIG. 8 shows a schematic structural diagram 8 of an aerosol generating device according to an embodiment of the present invention. As shown in FIG. 8, the aerosol generating device 100 further includes a recess 116 disposed in the bottom wall of the resonant cavity 104, and the second end of the second introduction member is located within the recess 116.

In an embodiment of the present invention, the aerosol generating device 100 further includes a recess 116. The recess 116 is installed in the bottom wall of the resonant cavity 104. The recess 116 is also installed opposite the second end of the second introduction member, and the second end of the second introduction member extends into the recess 116. This allows the microwaves that have entered the resonant cavity 104 to be transmitted in a direction from the second end to the first end of the resonant rod 112, thereby reducing energy loss during the microwave transmission process.

For clarity, in the claims, specification and drawings of the present invention, the term "multiple" means two or more than two. In addition, unless otherwise expressly limited, the directions or positional relationships indicated by terms such as "upper", "lower", etc. are based on the illustrations, and are merely intended to make the present invention easier to describe and to simplify the description process, and are not intended to expressly or imply that the subject devices or components must have the specific orientation described and be constructed and operated in the specific orientation. Therefore, these descriptions should not be construed as restricting the present invention. In addition, terms such as "connect", "mount", and "fix" should be interpreted broadly. For example, "connect" may mean a fixed connection between multiple objects, or a removable or integral connection between multiple objects. In addition, it may be a direct connection between multiple objects, or an indirect connection between multiple objects via an intermediate medium. A person skilled in the art can interpret the specific meaning of the above terms in the present invention based on the specific circumstances of the above terms.

In the claims, specification and drawings of the present invention, the description using terms such as "one embodiment", "several embodiments", "specific embodiment" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the general description of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples.

The above is merely a preferred embodiment of the present invention, and is not intended to limit the present invention. Those skilled in the art may have various modifications and variations of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are all intended to be included in the scope of protection of the present invention.

REFERENCE SIGNS LIST 100 Aerosol generating device 102 Housing 1021 First outer housing 1022 Inner housing 1023 Second outer housing 1024 Conductive layer 104 Resonant cavity 106 Mounting section 1062 Through hole 108 Microwave assembly 1082 Microwave introduction section 10822 First introduction member 10824 Second introduction member 1084 Microwave emission source 110 Optical fiber temperature sensing member 1102 Optical fiber temperature sensing probe 1104 Transmission line 112 Resonant rod 1122 Cavity 1124 Rod body 1126 First metal thin film layer 113 Controller 114 Isolation cover 116 Recessed portion

Claims (21)

a housing in which a resonant cavity is provided;
a mounting portion provided in the housing and positioned at a first end of the resonant cavity, the mounting portion being adapted to receive an aerosol-generating substrate;
a microwave assembly connected to the housing and adapted to emit microwaves into the resonant cavity to heat the aerosol-generating substrate and generate an aerosol;
An aerosol generating device comprising: an optical fiber temperature sensor provided in the resonant cavity for detecting the temperature of the aerosol generating substrate, at least a portion of which is inserted into the mounting portion. The aerosol generating device according to claim 1, wherein the mounting portion has a through hole communicating with the resonant cavity, and at least a portion of the optical fiber temperature sensor is inserted into the through hole. The optical fiber temperature sensing member includes N optical fiber temperature sensing probes,
3. The aerosol generating device according to claim 2, wherein the number of the through holes is N, the N through holes correspond one-to-one to the N optical fiber temperature sensing probes, and N is an integer greater than 1. The aerosol generating device of claim 3 further includes a resonant rod positioned within the resonant cavity, a first end of the resonant rod connected to the mounting portion, and a second end of the resonant rod connected to a second end of the resonant cavity. 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 coaxially arranged;
The aerosol generating device according to claim 4, wherein the resonant rod and the cylindrical resonant cavity are arranged coaxially. The aerosol generating device according to claim 4, wherein the resonant rod includes a cavity, the cavity penetrating the resonant rod along the axial direction of the resonant rod. Furthermore,
a controller for controlling the microwave assembly based on a temperature of the aerosol-generating substrate;
The optical fiber temperature sensor further comprises:
7. The aerosol generating device of claim 6, further comprising a transmission line located within the cavity, the transmission line connecting the optical fiber temperature sensing probe and the controller. The aerosol generating device according to claim 4, wherein the resonant rod is a conductive resonant rod. The aerosol generating device according to claim 4, wherein the resonant rod is a metallic resonant rod. The resonator rod is
A rod body;
5. The aerosol generating device according to claim 4, further comprising: a first metal thin film layer covering an outer wall of the rod body. The housing includes:
A first outer housing;
an inner housing connected to the first outer housing and located within the first outer housing;
The aerosol generating device according to claim 1 , wherein the inner housing is made of a metallic material, and the resonant cavity is located within the inner housing. The housing includes:
A second outer housing;
a conductive layer covering an inner wall of the second outer housing;
The aerosol generating device according to claim 1 , wherein an outer side of the conductive layer is connected to the second outer housing, and the resonant cavity is located inside the conductive layer. The aerosol generating device according to any one of claims 1 to 12 further includes an isolation cover provided on the mounting portion, the isolation cover covering the portion of the optical fiber temperature sensor that is inserted into the mounting portion. The aerosol generating device according to claim 13, wherein the isolation cover is a glass isolation cover, and the optical fiber temperature sensor is in close contact with the inner surface of the glass isolation cover. The aerosol generator according to any one of claims 3 to 10, wherein the optical fiber temperature sensor is a cylindrical optical fiber temperature sensor, and the diameter of the cylindrical optical fiber temperature sensor is in the range of 0.2 mm to 3 mm. The aerosol generating device according to claim 15, wherein the diameter of the cylindrical optical fiber temperature sensor probe is in the range of 0.5 mm to 1 mm. The aerosol generator according to any one of claims 1 to 12, wherein the temperature measurement range of the optical fiber temperature sensor is -20°C to 400°C. The microwave assembly includes:
a microwave introduction section provided on a side wall of the housing and communicating with the resonant cavity;
A microwave emission source connected to the microwave introduction part,
An aerosol generating device described in any one of claims 4 to 10, wherein the microwaves output from the microwave emission source are introduced into the resonant cavity via the microwave introduction part, and the microwaves are transmitted in a direction from the second end of the resonant rod toward the first end of the resonant rod. The microwave introduction section is
A first introduction member that is installed on a side wall of the housing and connected to the microwave emission source;
a second introduction member having a first end connected to the first introduction member;
19. The aerosol generating device of claim 18, wherein the second introduction member is located within the resonant cavity, and a second end of the second introduction member faces a bottom wall of the resonant cavity. The microwave introduction section is
The aerosol generating device of claim 18, further comprising a third introduction member installed on a side wall of the housing, a first end of the third introduction member being connected to the microwave emission source, and a second end of the third introduction member facing the resonant rod. The aerosol generating device according to claim 19, further comprising a recess provided in a bottom wall of the resonant cavity, the second end of the second introduction member being located within the recess.

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