Aerosol generating assembly, aerosol generating device, system and control method

Abstract

The present invention provides an aerosol generating component, an aerosol generating device, a system and a control method, wherein the aerosol generating component comprises: an aerosol matrix part; a susceptor, which is arranged in the aerosol matrix part, and the susceptor has a Curie temperature, and the Curie temperature is less than 400 degrees Celsius. By changing the voltage standing wave ratio of the microwave component through the phase change of the susceptor, non-contact temperature control of the aerosol matrix part can be achieved, and there is no need to set a circuit detection component that is attached to the aerosol matrix part, so as to avoid dirt on the circuit detection component and reduce the cleaning workload of the user on the aerosol generating device.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic smoking devices, and in particular, relates to an aerosol generating component, an aerosol generating device, an aerosol generating system and a control method of the aerosol generating system. Background Art

[0002] Heat Not Burning (HNB) device is an electronic device used to heat but not burn aerosol-generating substrate (processed plant leaf products). The heating device heats the aerosol-generating substrate to a temperature that can generate aerosol but is not high enough to burn, so that the aerosol-generating substrate can generate the aerosol required by the user without burning.

[0003] At present, the heating-not-burning devices on the market mainly use resistance heating, that is, using a central heating sheet or heating needle to insert from the center of the aerosol generating matrix into the inside of the aerosol generating matrix for heating. This device needs a long preheating waiting time before use, cannot be withdrawn and stopped freely, and the aerosol generating matrix is ​​unevenly carbonized, resulting in insufficient baking of the aerosol generating matrix and low utilization rate; secondly, the heating sheet of the HNB device is easy to produce dirt in the aerosol generating matrix extractor and the heating sheet base, which is difficult to clean; it will cause the temperature of the local aerosol generating matrix that contacts the heating body to be too high, partially cracked, and release substances that are harmful to the human body. Therefore, microwave heating technology gradually replaces resistance heating as a new heating method. Microwave heating technology has the characteristics of high efficiency, timeliness, selectivity and no delay in heating, and only has a heating effect on substances with specific dielectric properties. The application advantages of microwave heating atomization are: a. Microwave heating is radiation heating, not heat conduction, so it can be started and stopped; b. There is no heating plate, so there is no problem of broken plates and cleaning of heating plates; c. The utilization rate of the aerosol generation matrix is ​​high, the taste consistency is high, and the taste is closer to cigarettes.

[0004] However, in order to prevent the aerosol matrix from overheating and producing harmful substances, a detection component for detecting the temperature of the aerosol matrix needs to be provided on the heating not burning appliance. When the detection component comes into contact with the aerosol matrix, volatile gases or the aerosol matrix adhere to the surface of the detection component, which is not only difficult to clean but also reduces the detection accuracy of the detection component. Summary of the invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0006] In view of this, in a first aspect, the present invention proposes an aerosol generating component, comprising: an aerosol matrix portion; a receptor, disposed in the aerosol matrix portion, the receptor having a Curie temperature, and the Curie temperature is less than 400 degrees Celsius.

[0007] In the aerosol generating assembly provided by the present invention, the receptor is arranged in the aerosol matrix part, and when the temperature of the aerosol matrix part increases, the temperature of the receptor will also increase.

[0008] Specifically, the microwave component is provided with a control circuit and a detection component, and the detection component can obtain the voltage standing wave ratio of the microwave transmission line in the microwave component. The value of the voltage standing wave ratio can reflect the impedance matching between the microwave component and the aerosol generating component. When the impedance is mismatched, the value of the voltage standing wave ratio is large. When the impedance is matched, the value of the voltage standing wave ratio is small.

[0009] When the temperature of the susceptor reaches its own Curie temperature, the susceptor itself can undergo a phase change, and the corresponding change of the susceptor can cause the phenomenon of impedance mismatch, thereby increasing the voltage standing wave ratio. When the voltage standing wave ratio is greater than the set value, it means that the temperature of the current aerosol matrix part has reached the set temperature. At this time, the temperature of the aerosol matrix part is relatively high. In order to avoid the temperature of the aerosol matrix part continuing to rise and produce harmful substances, the control circuit can control the microwave component to reduce the output power or stop working, thereby realizing the function of temperature control of the aerosol generating component. When the temperature of the aerosol matrix part is lower than the set temperature, the susceptor can return to its original phase, and the voltage standing wave ratio decreases, indicating that the temperature of the current aerosol matrix part has decreased, and the microwave component can be controlled to continue to heat the aerosol matrix part.

[0010] By changing the voltage standing wave ratio of the microwave assembly through the corresponding changes of the receptor, non-contact temperature control of the aerosol matrix can be achieved, and there is no need to set a circuit detection component that is attached to the aerosol matrix, so as to avoid the circuit detection component from getting dirty and reduce the user's cleaning workload of the aerosol generating device. Moreover, by controlling the temperature of the aerosol matrix through the corresponding changes of the receptor, harmful substances can be avoided from being generated in the aerosol matrix, which is conducive to improving the safety of users during use.

[0011] In one possible application, the susceptor can change the resonant frequency within a resonant cavity.

[0012] By setting a sensor in the aerosol matrix part, the resonant frequency in the resonant cavity is within a set range. Before controlling the microwave component to perform microwave heating on the aerosol generating component, the microwave component performs a frequency sweep operation to determine the optimal operating frequency point of the microwave component. The optimal operating frequency point is related to the resonant frequency in the atomization cavity, so that the type of aerosol generating component can be identified, and a suitable operating mode is configured according to the type of aerosol generating component to heat the aerosol generating matrix in the aerosol generating component, thereby improving the atomization efficiency of the aerosol generating device. The aerosol generating device is able to identify the type of aerosol generating matrix in the aerosol generating component, and set the corresponding heating mode according to different types, thereby improving the atomization effect of the aerosol generating device on different types of aerosol generating matrices.

[0013] It can be understood that by arranging a sensor in the aerosol matrix portion, the aerosol generating device can identify the aerosol generating component. Therefore, the aerosol generating component can be set within a set resonant frequency range through the identification component. By setting the aerosol generating device to only perform microwave heating on the aerosol generating component within the set resonant frequency range, the anti-counterfeiting effect of the aerosol generating component can be achieved.

[0014] In addition, the aerosol generating assembly in the above technical solution provided by the present invention may also have the following additional technical features:

[0015] In a possible design, when the susceptor reaches the Curie temperature, the change in the magnetic permeability and / or dielectric constant of the susceptor is greater than a set value.

[0016] In this design, when the sensor reaches the distance temperature, the sensor will undergo a phase change, and the magnetic permeability and / or dielectric constant of the sensor will change significantly. This significant change will affect the voltage standing wave ratio of the microwave transmission line in the microwave component, thereby achieving the function of temperature control of the aerosol matrix.

[0017] In one possible design, the sensor includes a ferroelectric sensor or a piezoelectric sensor.

[0018] In this design, when the temperature of the aerosol matrix reaches the Curie temperature of the ferroelectric receptor and / or the piezoelectric receptor during the heating process of the aerosol matrix by the microwave component, the lattice structure of the receptor changes, polarization disappears, and the dielectric constant of the receptor increases significantly, showing a maximum value. The temperature sensitivity is high, which will cause a relatively obvious impedance mismatch phenomenon in the aerosol generation system. This phase change indicates that the temperature of the current aerosol matrix is ​​higher than the set temperature. When the impedance mismatch caused by the phase change associated with the Curie temperature of the receptor is detected, the microwave component can automatically stop heating the aerosol matrix. After stopping the heating and cooling the aerosol matrix until it is lower than the Curie temperature of the receptor, the receptor restores its ferroelectricity / piezoelectricity. The control circuit of the microwave component can detect that the impedance mismatch caused by the phase change is significantly reduced, that is, the microwave component can be started again to heat the aerosol matrix. The heating temperature of the aerosol matrix can be controlled by repeatedly starting and stopping the microwave component, realizing non-contact temperature control of the aerosol matrix.

[0019] Ferroelectric receptors and piezoelectric receptors have high resistivity, high dielectric constant and low dielectric loss, so that the receptors will not absorb microwaves excessively, ensuring that the microwaves generated by the microwave components can act on the aerosol matrix, avoiding the receptors from affecting the atomization effect of the aerosol matrix.

[0020] In one possible design, the sensor includes: a ferroelectric / piezoelectric ceramic sensor of a perovskite structure; and / or a ferroelectric / piezoelectric film sensor; and / or a ceramic thermistor sensor.

[0021] In one possible design, the sensor includes: at least one of a sodium bismuth titanate sensor, a barium bismuth niobate sensor, a barium titanate sensor, a sodium niobate sensor, a niobium titanate sensor, a barium strontium titanate sensor, and a niobate sensor. In one possible design, the sensor extends along the length direction of the aerosol matrix portion.

[0022] In this design, the length direction of the receptor is limited to be arranged in the same direction as the length direction of the aerosol matrix part. Affected by the length of the aerosol matrix part, the effect of microwaves on various parts of the aerosol matrix part is different. The heating effect on the side of the aerosol matrix part facing the resonance cavity is relatively good, and the heating effect on the side of the aerosol matrix part away from the resonance cavity is relatively poor. Therefore, the heating effect of microwaves on various parts of the aerosol matrix part is different, and therefore the temperature of various parts of the aerosol matrix part will also be different. Extending the receptor along the length direction of the aerosol matrix part allows the receptor to detect the temperature of multiple positions of the aerosol matrix part, improves the accuracy of temperature detection, ensures that the aerosol matrix part is not prone to excessively high temperature areas, effectively avoids the generation of harmful substances in the aerosol matrix part, and improves the safety of users when using the aerosol generation system.

[0023] In a possible design, the aerosol matrix portion includes: an aerosol matrix segment, and the length of the receptor is less than or equal to the length of the aerosol matrix segment.

[0024] In this design, the relationship between the length of the susceptor and the length of the aerosol matrix section is defined. Since the susceptor extends along the length direction of the aerosol matrix section and the length of the susceptor is smaller than the length of the aerosol matrix section, the susceptor does not extend out of the aerosol matrix section.

[0025] The aerosol matrix portion generally also includes: a hollow section, a cooling section and a filter section, the hollow section is located between the cooling section and the aerosol matrix section, and the cooling section is located between the hollow section and the filter section. The hollow section is used to buffer the aerosol so that the aerosol can flow smoothly, the hollow section is also connected to the cooling section, the cooling section is used to cool the aerosol, thereby improving the user's comfort, the filter section is connected to the cooling section, and the filter section is used to filter the aerosol. The aerosol generating matrix portion is also provided with a shell, the shell is used to wrap the aerosol matrix section, the hollow section, the cooling section and the filter section, and the shell is a supporting cardboard tube, a polylactic acid material tube, a protein material tube, a plant gum material tube or a cellulose derivative material tube.

[0026] If the sensor extends out of the aerosol matrix segment, the extended part cannot detect the temperature. Therefore, setting the sensor not to extend out of the aerosol matrix segment can ensure the accuracy of detecting the temperature of the aerosol matrix segment on the basis of shortening the length of the sensor as much as possible, thereby avoiding material waste caused by longer and larger sensor.

[0027] In one possible design, the number of the susceptor is at least one.

[0028] In this design, the microwave has different effects on different parts of the aerosol matrix, so the microwave has different heating effects on different parts of the aerosol matrix, and therefore the temperature of different parts of the aerosol matrix will also be different. By increasing the number of sensors, multiple positions on the aerosol matrix can be detected, the accuracy of temperature detection can be improved, and it can be ensured that the aerosol matrix is ​​not prone to excessively high temperature areas, effectively avoiding the generation of harmful substances in the aerosol matrix, and improving the safety of users when using the aerosol generation system.

[0029] In a possible design, the number of the receptors is at least two, and the at least two receptors are spaced apart along the length direction of the aerosol matrix portion.

[0030] In this design, affected by the length of the aerosol matrix part, the microwave has different effects on different parts of the aerosol matrix part. The heating effect on the side of the aerosol matrix part facing the resonance cavity is relatively good, and the heating effect on the side of the aerosol matrix part away from the resonance cavity is relatively poor. Therefore, the microwave has different heating effects on different parts of the aerosol matrix part, and therefore the temperature of different parts of the aerosol matrix part will also be different. At least two receptors are extended at intervals along the length direction of the aerosol matrix part, so that the receptors can detect the temperature of multiple positions of the aerosol matrix part, improve the accuracy of temperature detection, ensure that the aerosol matrix part is not prone to excessively high temperature areas, effectively avoid the generation of harmful substances in the aerosol matrix part, and improve the safety of users when using the aerosol generation system.

[0031] The reason for setting two adjacent aerosol matrix parts at intervals is that the temperature difference between positions that are close to each other on the aerosol matrix part is small, so there is no need to set two receptors at positions that are close to each other. Setting the aerosol matrix parts at intervals can reduce the number of receptors used and save material consumption.

[0032] In one possible design, the shape of the susceptor includes one or more of the following: a prism, a pyramid, a pyramid, a cone, and a sphere.

[0033] In this design, during the production process of the sensor, the shape of the sensor can be reasonably set according to actual needs. The shape of the sensor includes but is not limited to a prism, a pyramid, a pyramid, a cone, and a sphere.

[0034] In a second aspect, the present invention proposes an aerosol generating device for heating the aerosol generating component in the first aspect, the aerosol generating device comprising: a resonant cavity, into which the aerosol generating component can extend; a microwave component, which is used to feed microwaves into the resonant cavity, and the microwave component is provided with a detection component and a control circuit, the detection component is used to obtain the voltage standing wave ratio of the microwave component, and the control circuit determines whether the receptor in the aerosol generating component has reached the Curie temperature based on the voltage standing wave ratio, and based on the receptor reaching the Curie temperature, the microwave component output power is reduced or the microwave component is turned off.

[0035] The microwave assembly can generate microwaves and feed the microwaves into the resonant cavity, and the microwaves in the resonant cavity can act on the aerosol matrix to generate aerosol. The cavity wall of the resonant cavity is made of metal material, illustratively, the cavity wall of the resonant cavity is made of copper, aluminum, iron, etc. or their alloys.

[0036] The control circuit can obtain the voltage standing wave ratio. The value of the voltage standing wave ratio can indicate the impedance matching between the microwave component and the aerosol generating component. When the impedance is mismatched, the value of the voltage standing wave ratio is large. When the impedance is matched, the value of the voltage standing wave ratio is small.

[0037] When the temperature of the susceptor reaches its own Curie temperature, the susceptor itself can undergo a phase change, and the corresponding change of the susceptor can cause the phenomenon of impedance mismatch, thereby increasing the voltage standing wave ratio. When the voltage standing wave ratio is greater than the set value, it means that the temperature of the current aerosol matrix part has reached the set temperature. At this time, the temperature of the aerosol matrix part is relatively high. In order to avoid the temperature of the aerosol matrix part continuing to rise and produce harmful substances, the control circuit can control the microwave component to reduce the output power or stop working, thereby realizing the function of temperature control of the aerosol generating component. When the temperature of the aerosol matrix part is lower than the set temperature, the susceptor can return to its original phase, and the voltage standing wave ratio decreases, indicating that the temperature of the current aerosol matrix part has decreased, and the microwave component can be controlled to continue to heat the aerosol matrix part.

[0038] By changing the voltage standing wave ratio of the microwave assembly through the corresponding changes of the receptor, non-contact temperature control of the aerosol matrix can be achieved, and there is no need to set a circuit detection component that is in contact with the aerosol matrix, so as to avoid contamination of the circuit detection component and reduce the cleaning workload of the aerosol generating device by the user. Moreover, the method of detecting the temperature of the aerosol matrix through the corresponding changes of the receptor can improve the accuracy of the detection process, avoid the generation of harmful substances in the aerosol matrix, and help improve the safety of the user during use.

[0039] In one possible design, the aerosol generating device further includes: a shell, in which the resonance cavity is disposed; a resonance column, in which the first end of the resonance column is connected to the bottom wall of the resonance cavity, and the second end of the resonance column is disposed opposite to the aerosol generating component.

[0040] In this design, the resonant column is installed in the atomizing chamber, and the diameter of the resonant column is smaller than the diameter of the atomizing chamber, so a gap is provided between the outer side wall of the atomizing chamber and the inner side wall of the atomizing chamber, and microwaves can be conducted in this part of the spacing. The resonant column can be used as a conductor, and the resonant column can be made of a metal material. For example, the resonant column is made of copper, aluminum, iron, etc. or their alloys. The resonant column is used to transmit microwaves and increase the microwave transmission rate. The microwave is not prone to attenuation when it is conducted in the atomizing chamber, which improves the effect of microwaves on the aerosol generating matrix, so that microwaves can act on the aerosol generating matrix efficiently and quickly, which is conducive to meeting the user's use needs.

[0041] In a possible design, the shell includes: a first body; a second body, the second body is detachably connected to the first body, and the first body and the second body enclose a resonant cavity.

[0042] In this design, the connection mode between the first body and the second body is defined, and the first body can be disassembled from the second body. When the aerosol generating device needs to be cleaned after being used for a long time, the first body can be disassembled from the second body, thereby opening the opening of the resonant cavity, which can facilitate the cleaning of the resonant cavity alone, improve the convenience of cleaning the aerosol generating device, and thus improve the convenience of the user to use the aerosol generating device. Moreover, when the aerosol generating device is damaged, the sub-parts in the aerosol generating device can be replaced separately, reducing the maintenance cost of the aerosol generating device.

[0043] For example, mounting holes may be provided on the first body and the second body, and the mounting seat may be mounted on the body by passing the locking member through the mounting holes.

[0044] In a possible design, a mounting seat is provided on the first body or the second body, and the mounting seat is provided with a receiving cavity, and a part of the aerosol matrix part is received in the receiving cavity.

[0045] In this design, the mounting base separates the aerosol matrix portion and the resonance column to prevent the resonance column from contacting the aerosol matrix, thereby preventing the resonance column from becoming dirty and reducing the workload of cleaning the resonance column.

[0046] In a possible design, the resonant cavity includes: a strong field region, and the receptor in the aerosol generating component is located in the strong field region of the resonant cavity, and the strong field region is the strong field region of microwaves formed by the microwave component feeding microwaves into the resonant cavity.

[0047] In this design, the microwave component feeds microwaves into the atomization cavity, and the microwaves are conducted in the atomization cavity. Affected by the microwave transmission characteristics, a strong field area and a weak field area are formed in the atomization cavity. The aerosol generating matrix in the body is arranged in the strong field area of ​​the atomization cavity, which can ensure the microwave heating and atomization effect of the aerosol generating matrix. Therefore, by also arranging the identification element in the strong field area, it can be ensured that the identification element can affect the resonant frequency of the aerosol generating component.

[0048] In a third aspect, the present invention proposes an aerosol generating system, comprising an aerosol generating assembly as in any possible aspect of the first aspect; and an aerosol generating device as in any possible design of the second aspect, wherein a portion of the aerosol generating assembly can be plugged into the aerosol generating device. Therefore, the aerosol generating system has all the beneficial effects of the aerosol generating assembly proposed in any possible design, and has all the beneficial effects of the aerosol generating device proposed in any possible design, which will not be described in detail here.

[0049] In a fourth aspect, the present invention proposes a control method for an aerosol generating system, the aerosol generating system comprising an aerosol generating component and an aerosol generating device, the aerosol generating component comprising: an aerosol matrix portion and a receptor, the receptor being arranged in the aerosol matrix portion, the aerosol generating device comprising: a resonant cavity and a microwave component, the microwave component being used to feed microwaves into the resonant cavity; the control method comprises: controlling the microwave component to sweep frequency within the microwave frequency range, searching for a target microwave frequency within the microwave frequency range; controlling the microwave component to feed microwaves into the resonant cavity at the target microwave frequency, and obtaining the voltage standing wave ratio of the microwave component; determining the temperature of the receptor based on the voltage standing wave ratio; and determining the working state of the microwave component based on the temperature of the receptor.

[0050] The present application provides a control method for controlling an aerosol generating system, wherein microwaves are used to heat an aerosol matrix portion, wherein the aerosol matrix portion may be a solid aerosol generating matrix or a liquid aerosol generating matrix. A resonant cavity for accommodating the aerosol matrix portion is provided in the aerosol generating device, and a microwave component can feed microwaves into the resonant cavity, and the aerosol matrix portion is heated and atomized under the action of the microwaves.

[0051] The aerosol generating device receives the instruction to start atomization and controls the microwave component to perform frequency sweeping operation within the microwave frequency range. Specifically, the microwave component is controlled to feed microwaves into the resonant cavity in turn according to each microwave frequency within the microwave frequency range. The target microwave frequency in the microwave frequency range is determined according to the change of the parameters in the atomization cavity. The target microwave frequency is the optimal frequency point for the operation of the microwave component in the current resonant cavity state, that is, the microwave frequency with the largest microwave absorption in the resonant cavity. Heating the aerosol matrix part with microwaves of the target microwave frequency can help improve the atomization effect of the aerosol matrix part.

[0052] When the temperature of the susceptor reaches its own Curie temperature, the susceptor itself can undergo a phase change, and the corresponding change of the susceptor can cause the phenomenon of impedance mismatch, thereby increasing the voltage standing wave ratio. When the voltage standing wave ratio is greater than the set value, it means that the temperature of the current aerosol matrix part has reached the set temperature. At this time, the temperature of the aerosol matrix part is relatively high. In order to avoid the temperature of the aerosol matrix part continuing to rise and produce harmful substances, the control circuit can control the microwave component to reduce the output power or stop working, thereby realizing the function of temperature control of the aerosol generating component. When the temperature of the aerosol matrix part is lower than the set temperature, the susceptor can return to its original phase, and the voltage standing wave ratio decreases, indicating that the temperature of the current aerosol matrix part has decreased, and the microwave component can be controlled to continue to heat the aerosol matrix part.

[0053] By changing the voltage standing wave ratio of the microwave assembly through the corresponding changes of the receptor, non-contact temperature control of the aerosol matrix can be achieved, and there is no need to set a circuit detection component that is in contact with the aerosol matrix, so as to avoid contamination of the circuit detection component and reduce the cleaning workload of the aerosol generating device by the user. Moreover, the method of detecting the temperature of the aerosol matrix through the corresponding changes of the receptor can improve the accuracy of the detection process, avoid the generation of harmful substances in the aerosol matrix, and help improve the safety of the user during use.

[0054] In one possible design, the working state of the microwave component is determined according to the temperature of the susceptor, including: reducing the output power of the microwave component or shutting down the microwave component based on the temperature of the susceptor reaching the Curie temperature; and controlling the microwave component to operate at rated power when the temperature of the susceptor is less than the Curie temperature.

[0055] In this design, when the susceptor reaches the Curie temperature, the temperature of the aerosol matrix is ​​relatively high. In order to prevent the temperature of the aerosol matrix from continuing to rise and producing harmful substances, the control circuit can control the microwave component to reduce the output power or stop working, thereby realizing the temperature control function of the aerosol generating component. When the temperature of the susceptor is lower than the Curie temperature, the susceptor can be restored to its original phase, and the voltage standing wave ratio decreases, indicating that the temperature of the current aerosol matrix has been reduced, and the microwave component can be controlled to continue heating the aerosol matrix.

[0056] In a possible design, after searching for the target microwave frequency in the microwave frequency range, it also includes: determining the matching state of the aerosol generating component and the microwave component based on the numerical relationship between the target microwave frequency and the set frequency; based on the aerosol generating component and the microwave component being in a matching state, controlling the microwave component to feed microwaves into the resonant cavity at the target microwave frequency; based on the aerosol generating component and the microwave component being in a non-matching state, controlling the microwave component to stop running and outputting a prompt message.

[0057] In this design, the matching state of the aerosol generating component and the microwave component can be judged according to the numerical relationship between the target microwave frequency and the set frequency range, that is, whether the aerosol generating component matches the microwave component. Then, according to the matching state of the aerosol generating component and the microwave component, the operation of the microwave component is controlled.

[0058] The detection element can change the microwave frequency of the resonant cavity. When an aerosol generating assembly with different detection elements is assembled to an aerosol generating device, the resonant frequency of the resonant cavity is different. When the microwave frequency is the same as the resonant frequency of the current resonant cavity, the heating effect on the aerosol matrix part is the best. At this time, the microwave frequency is the target microwave frequency.

[0059] When the material of the test piece that serves as the genuine product is determined, the resonant frequency of the resonant cavity is also determined. At this time, the microwave frequency that is equal to the resonant frequency is the set frequency.

[0060] The current target microwave frequency is compared with the set frequency range. When the difference between the target microwave frequency and the set frequency is greater than the set value, the difference between the target microwave frequency and the set frequency is large, and it is considered that the aerosol generating component and the microwave component do not match, that is, the current aerosol generating component is a counterfeit.

[0061] When the difference between the target microwave frequency and the set frequency is less than the set value, the difference between the target microwave frequency and the set frequency is small, and it is considered that the aerosol generating component and the microwave component match, that is, the current aerosol generating component is authentic.

[0062] By comparing the target microwave frequency with the set frequency, the anti-counterfeiting function of the aerosol generating component is achieved, which is beneficial to protecting the market order and the legitimate rights and interests of manufacturers and consumers.

[0063] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0065] Figure 1 One of the structural schematic diagrams of the aerosol generating assembly in an embodiment of the present invention is shown;

[0066] Figure 2 The second structural schematic diagram of the aerosol generating assembly in the embodiment of the present invention is shown;

[0067] Figure 3 The third structural schematic diagram of the aerosol generating assembly in the embodiment of the present invention is shown;

[0068] Figure 4 A fourth structural schematic diagram of an aerosol generating assembly in an embodiment of the present invention is shown;

[0069] Figure 5 A schematic structural diagram of an aerosol generating system in an embodiment of the present invention is shown;

[0070] Figure 6 A flow chart of a method for controlling an aerosol generating system in an embodiment of the present invention is shown.

[0071] in, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names is as follows:

[0072] 100 aerosol generating device, 110 resonance cavity, 120 microwave component, 130 shell, 131 first body, 132 second body, 133 mounting seat, 140 resonance column, 200 aerosol generating component, 210 aerosol matrix part, 211 aerosol matrix segment, 212 hollow segment, 213 cooling segment, 214 filter segment, 220 receptor. DETAILED DESCRIPTION

[0073] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0074] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0075] Refer to the following Figures 1 to 6 An aerosol generating assembly, an aerosol generating device, an aerosol generating system and a control method of an aerosol generating system provided according to some embodiments of the present invention are described.

[0076] Combination Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments of the invention, an aerosol generating component is proposed, including: an aerosol matrix portion 210 and a receptor 220, wherein the receptor 220 is disposed in the aerosol matrix portion 210, and the receptor 220 has a Curie temperature, which is less than 400 degrees Celsius.

[0077] The susceptor 220 is disposed in the aerosol matrix portion 210 , and when the temperature of the aerosol matrix portion 210 increases, the temperature of the susceptor 220 also increases.

[0078] Specifically, the microwave component 120 is provided with a control circuit, and the control circuit can obtain the voltage standing wave ratio. The value of the voltage standing wave ratio can indicate the impedance matching between the microwave component 120 and the aerosol generating component 200. When the impedance is mismatched, the value of the voltage standing wave ratio is large. When the impedance is matched, the value of the voltage standing wave ratio is small.

[0079] When the temperature of the susceptor 220 reaches its own Curie temperature, the susceptor 220 itself can undergo a phase change, and the corresponding change of the susceptor 220 can cause the impedance mismatch phenomenon, thereby increasing the voltage standing wave ratio. When the voltage standing wave ratio is greater than the set value, it means that the temperature of the current aerosol matrix part 210 has reached the set temperature. At this time, the temperature of the aerosol matrix part 210 is relatively high. In order to avoid the temperature of the aerosol matrix part 210 continuing to rise and produce harmful substances, the control circuit can control the microwave component to reduce the output power or stop working, thereby realizing the function of controlling the temperature of the aerosol generating component. When the temperature of the aerosol matrix part 210 is lower than the set temperature, the susceptor 220 can be restored to its original phase, and the voltage standing wave ratio decreases, indicating that the temperature of the current aerosol matrix part 210 has decreased, and the microwave component 120 can be controlled to continue to heat the aerosol matrix part 210.

[0080] By changing the voltage standing wave ratio of the microwave assembly 120 through the corresponding change of the sensor 220, non-contact temperature control of the aerosol matrix part 210 can be achieved, and there is no need to set a circuit detection component that is in contact with the aerosol matrix part 210, so as to avoid the circuit detection component from getting dirty, reduce the user's cleaning workload for the aerosol generating device 100, and increase the service life of the aerosol generating device 100. Since the aerosol generating assembly 200 is disposable, it does not need to be cleaned and can be discarded after extraction. Moreover, the method of detecting the temperature of the aerosol matrix part 210 through the corresponding change of the sensor 220 can improve the accuracy of the detection process, avoid the generation of harmful substances by the aerosol matrix part 210, and help improve the safety of users during use.

[0081] In one possible application, the susceptor 220 is capable of changing the resonant frequency within the resonant cavity 110 .

[0082] By setting the susceptor 220 in the aerosol matrix part 210, the resonant frequency in the resonant cavity 110 is within a set range. Before the microwave component 120 is controlled to perform microwave heating on the aerosol generating component 200, the microwave component 120 performs a frequency sweep operation to determine the optimal operating frequency point of the microwave component 120, which is related to the resonant frequency in the atomization cavity, so that the type of the aerosol generating component 200 can be identified, and a suitable operating mode can be configured according to the type of the aerosol generating component 200 to heat the aerosol generating matrix in the aerosol generating component 200, thereby improving the atomization efficiency of the aerosol generating device 100. It is realized that the aerosol generating device 100 can identify the type of the aerosol generating matrix in the aerosol generating component 200, and set the corresponding heating mode according to different types, thereby improving the atomization effect of the aerosol generating device 100 on different types of aerosol generating matrices.

[0083] It can be understood that by setting the sensor 220 in the aerosol matrix part 210, the aerosol generating device 100 can identify the aerosol generating component 200. Therefore, the aerosol generating component 200 can be set within the set resonant frequency range through the identification component. By setting the aerosol generating device 100, only the aerosol generating component 200 within the set resonant frequency range can be microwave heated, thereby realizing the anti-counterfeiting effect of the aerosol generating component 200.

[0084] The material of the susceptor 220 is primarily used to indicate when the aerosol substrate portion 210 reaches the maximum desired temperature during the entire heating period.

[0085] In a possible embodiment, when the susceptor 220 reaches the Curie temperature, a change value of the magnetic permeability and / or dielectric constant of the susceptor 220 is greater than a set value.

[0086] In this embodiment, when the receptor 220 reaches the distance temperature, the receptor 220 will undergo a phase change, and the magnetic permeability and / or dielectric constant of the receptor 220 will change significantly. This significant change will affect the voltage standing wave ratio of the microwave transmission line in the microwave assembly, thereby achieving the function of controlling the temperature of the aerosol matrix part 210.

[0087] In a possible embodiment, the sensor 220 includes a ferroelectric sensor or a piezoelectric sensor.

[0088] In this design, when the temperature of the aerosol matrix reaches the Curie temperature of the ferroelectric receptor and / or the piezoelectric receptor during the heating process of the aerosol matrix by the microwave component, the lattice structure of the receptor 220 changes, polarization disappears, and the dielectric constant of the receptor 220 increases significantly, showing a maximum value, and the temperature sensitivity is high, which will cause a relatively obvious impedance mismatch phenomenon in the aerosol generating system. This phase change indicates that the temperature of the current aerosol matrix is ​​higher than the set temperature. When the impedance mismatch caused by the phase change associated with the Curie temperature of the receptor 220 is detected, the microwave component can automatically stop heating the aerosol matrix. After stopping heating and cooling the aerosol matrix until it is lower than the Curie temperature of the receptor 220, the receptor 220 restores its ferroelectricity / piezoelectricity. The control circuit of the microwave component can detect that the impedance mismatch caused by the phase change is significantly reduced, that is, the microwave component can be started again to heat the aerosol matrix. The heating temperature of the aerosol matrix portion can be controlled by repeatedly starting and stopping the microwave component, thereby realizing non-contact temperature control of the aerosol matrix portion.

[0089] Ferroelectric receptors and piezoelectric receptors have high resistivity, high dielectric constant and low dielectric loss, so that the receptor 220 will not absorb microwaves excessively, ensuring that the microwaves generated by the microwave assembly can act on the aerosol matrix, thus avoiding the receptor 220 from affecting the atomization effect of the aerosol matrix.

[0090] In a possible embodiment, the sensor 220 includes: a ferroelectric / piezoelectric ceramic sensor with a perovskite structure; and / or a ferroelectric / piezoelectric film sensor; and / or a ceramic thermistor sensor.

[0091] In a possible embodiment, the sensor 220 includes at least one of a sodium bismuth titanate sensor, a barium bismuth niobate sensor, a barium titanate sensor, a sodium niobate sensor, a niobium titanate sensor, a barium strontium titanate sensor, and a niobate sensor.

[0092] like Figure 1 As shown, in a possible embodiment, the receptor 220 extends along the length direction of the aerosol substrate portion 210 .

[0093] In this embodiment, the length direction of the receptor 220 is defined to be arranged in the same direction as the length direction of the aerosol matrix 210. Affected by the length of the aerosol matrix 210, the microwave has different effects at different locations of the aerosol matrix 210. The heating effect of the side of the aerosol matrix 210 facing the resonant cavity 110 is relatively good, and the heating effect of the side of the aerosol matrix 210 facing away from the resonant cavity 110 is relatively poor. Therefore, the microwave has different heating effects at different locations of the aerosol matrix 210, and therefore the temperature at different locations of the aerosol matrix 210 will also be different. The receptor 220 is extended along the length direction of the aerosol matrix 210, so that the receptor 220 can detect the temperature of multiple locations of the aerosol matrix 210, improve the accuracy of temperature detection, ensure that the aerosol matrix 210 is not prone to excessively high temperature areas, effectively avoid the generation of harmful substances in the aerosol matrix 210, and improve the safety of users when using the aerosol generation system.

[0094] In a possible embodiment, the aerosol matrix portion 210 includes: an aerosol matrix segment 211 , and the length of the receptor 220 is less than or equal to the length of the aerosol matrix segment 211 .

[0095] In this embodiment, the relationship between the length of the susceptor 220 and the length of the aerosol matrix segment 211 is defined. Since the susceptor 220 extends along the length direction of the aerosol matrix portion 210 and the length of the susceptor 220 is less than the length of the aerosol matrix portion 210, the susceptor 220 does not extend out of the aerosol matrix segment 211.

[0096] The aerosol matrix section 210 generally further includes: a hollow section 212, a cooling section 213 and a filter section 214. The hollow section 212 is located between the cooling section 213 and the aerosol matrix section 211, and the cooling section 213 is located between the hollow section 212 and the filter section 214. The hollow section 212 is used to buffer the aerosol so that the aerosol can flow smoothly. The hollow section 212 is also connected to the cooling section 213, which is used to cool the aerosol, thereby improving the comfort of the user. The filter section 214 is connected to the cooling section 213, and the filter section 214 is used to filter the aerosol. The aerosol generating matrix portion is also provided with an outer shell, which is used to wrap the aerosol matrix segment 211, the hollow segment 212, the cooling segment 213 and the filter segment 214. The outer shell is one of a supporting cardboard tube, a polylactic acid material tube, a protein material tube, a plant gum material tube or a cellulose derivative material tube.

[0097] If the sensor 220 extends out of the aerosol matrix segment 211, the extended portion cannot detect the temperature. Therefore, the sensor 220 is set not to extend out of the aerosol matrix segment 211. This can ensure the accuracy of detecting the temperature of the aerosol matrix segment 211 while shortening the length of the sensor 220 as much as possible, thereby avoiding material waste caused by a longer and larger sensor 220.

[0098] In one possible application, the aerosol matrix segment 211 is made of tobacco, herbs or herbal plant leaves, and medicines as the main solid raw materials, and is prepared into matrices in the following different forms: including one or more of granules, flakes, powder fragments, filaments, pastes, wafers, porous aerogels, capsules, etc.

[0099] The material of the hollow section 212 is one of cardboard tube, polylactic acid material tube, synthetic resin, protein material tube, plant gum material tube, cellulose derivative material tube, cellulose acetate, polylactic acid tow or acetate fiber tow, etc.

[0100] The material of the cooling section 213 is selected from one of polylactic acid / aluminum foil composite film, paper filter rod, polylactic acid non-woven fabric, polylactic acid particles, polylactic acid tow braided tube, serrated polylactic acid folded film, cellulose acetate, and cooling activated carbon composite material; the filter section 214 is one of polylactic acid tow or acetate fiber tow.

[0101] The overall length of the aerosol generating assembly 200 is 30 mm to 70 mm, preferably 40 mm to 50 mm, wherein the height of the aerosol substrate segment 211 is 6 mm to 25 mm, preferably 8 mm to 12 mm, and the diameter of the aerosol substrate segment 211 is 4 mm to 17 mm, preferably 5 mm to 8 mm.

[0102] Combination Figure 3 and Figure 4 As shown, in a possible embodiment, the number of the sensor 220 is at least one.

[0103] In this embodiment, the microwave has different effects on different parts of the aerosol matrix 210, so the microwave has different heating effects on different parts of the aerosol matrix 210, and therefore the temperature of different parts of the aerosol matrix 210 will also be different. By increasing the number of receptors 220, multiple positions on the aerosol matrix 210 can be detected, the accuracy of temperature detection is improved, and it is ensured that the aerosol matrix 210 is not prone to excessively high temperature areas, effectively avoiding the generation of harmful substances in the aerosol matrix 210, and improving the safety of users when using the aerosol generation system.

[0104] like Figure 3As shown, in a possible embodiment, the number of the receptors 220 is at least two, and the at least two receptors 220 are arranged at intervals along the length direction of the aerosol matrix portion 210 .

[0105] In this embodiment, affected by the length of the aerosol matrix 210, the microwaves have different effects at different locations of the aerosol matrix 210. The heating effect of the side of the aerosol matrix 210 facing the resonant cavity 110 is relatively good, and the heating effect of the side of the aerosol matrix 210 facing away from the resonant cavity 110 is relatively poor. Therefore, the microwaves have different heating effects at different locations of the aerosol matrix 210, and thus the temperatures at different locations of the aerosol matrix 210 are also different. At least two receptors 220 are extended at intervals along the length direction of the aerosol matrix 210, so that the receptors 220 can detect the temperatures at multiple locations of the aerosol matrix 210, improve the accuracy of temperature detection, ensure that the aerosol matrix 210 is not prone to excessively high temperature areas, effectively avoid the generation of harmful substances in the aerosol matrix 210, and improve the safety of users when using the aerosol generation system.

[0106] The two adjacent aerosol matrix parts 210 are spaced apart because the temperature difference between the positions on the aerosol matrix part 210 that are close to each other is small, so there is no need to set two receptors 220 at positions that are close to each other. The spaced-apart aerosol matrix part 210 can reduce the number of receptors 220 used and save material consumption.

[0107] In one possible application, the Curie temperature of the susceptor 220 is less than 400 degrees Celsius.

[0108] The ferroelectric susceptor 220 and the piezoelectric susceptor 220 have high resistivity, high dielectric constant and low dielectric loss, so that the susceptor 220 will not absorb microwaves excessively, ensuring that the microwaves generated by the microwave assembly 120 can act on the aerosol matrix 210, and avoiding the susceptor 220 from affecting the atomization effect of the aerosol matrix 210.

[0109] In one possible application, the sensor 220 includes: a perovskite structured ferroelectric / piezoelectric ceramic, a ferroelectric / piezoelectric film, a PCT ceramic thermistor, preferably one or more of sodium bismuth titanate, barium bismuth niobate, barium titanate, sodium niobate, niobium titanate, barium strontium titanate, niobates, etc.

[0110] In a possible embodiment, the shape of the susceptor 220 includes one or more of the following: a prism, a pyramid, a pyramid, a cone, and a sphere.

[0111] In this embodiment, during the production process of the susceptor 220, the shape of the susceptor 220 can be reasonably set according to actual needs. The shape of the susceptor 220 includes but is not limited to a prism, a pyramid, a pyramid, a cone, and a sphere.

[0112] In a possible application, the length of the susceptor 220 is between 6 mm and 25 mm, the width of the susceptor 220 is between 1 mm and 6 mm, and the thickness of the susceptor 220 is between 10 μm and 100 μm.

[0113] Combination Figure 1 and Figure 5 As shown, in some embodiments of the present invention, an aerosol generating device 100 is proposed, and the aerosol generating device 100 is used to heat the aerosol generating component 200 in the above embodiment. The aerosol generating device 100 includes: a resonant cavity 110 and a microwave component 120, and the aerosol generating component 200 can be extended into the resonant cavity 110; the microwave component 120 is used to feed microwaves into the resonant cavity 110, and the microwave component 120 is provided with a detection component and a control circuit. The detection component is used to obtain the voltage standing wave ratio of the microwave component 120, and the control circuit determines whether the sensor 220 in the aerosol generating component 200 has reached the Curie temperature according to the voltage standing wave ratio, and based on the sensor 220 reaching the Curie temperature, the output power of the microwave component 120 is reduced or the microwave component is turned off.

[0114] The microwave assembly 120 can generate microwaves and feed the microwaves into the resonant cavity 110. The microwaves in the resonant cavity 110 can act on the aerosol matrix portion 210 of the aerosol generating assembly 200, thereby generating aerosol. The cavity wall of the resonant cavity 110 is made of a metal material. For example, the cavity wall of the resonant cavity 110 is made of copper, aluminum, iron, etc. or alloys thereof.

[0115] The control circuit can obtain the voltage standing wave ratio. The value of the voltage standing wave ratio can indicate the impedance matching between the microwave component 120 and the aerosol generating component 200. When the impedance is mismatched, the value of the voltage standing wave ratio is large. When the impedance is matched, the value of the voltage standing wave ratio is small.

[0116] When the temperature of the susceptor 220 reaches its own Curie temperature, the susceptor 220 itself can undergo a phase change, and the corresponding change of the susceptor 220 can cause the impedance mismatch phenomenon, thereby increasing the voltage standing wave ratio. When the voltage standing wave ratio is greater than the set value, it means that the temperature of the current aerosol matrix part 210 has reached the set temperature. At this time, the temperature of the aerosol matrix part 210 is relatively high. In order to prevent the temperature of the aerosol matrix part 210 from continuing to rise and produce harmful substances, the microwave component 120 can be controlled by the control circuit to reduce the output power or stop working, so as to realize the temperature control function of the aerosol generating component 200. When the temperature of the aerosol matrix part 210 is lower than the set temperature, the susceptor 220 can be restored to the original phase, and the voltage standing wave ratio decreases, indicating that the temperature of the current aerosol matrix part 210 has decreased, and the microwave component 120 can be controlled to continue to heat the aerosol matrix part 210.

[0117] By changing the voltage standing wave ratio of the microwave assembly 120 through the corresponding change of the sensor 220, non-contact temperature control of the aerosol matrix part 210 can be achieved, and there is no need to set a circuit detection component that is in contact with the aerosol matrix part 210, so as to avoid the circuit detection component from getting dirty, reduce the user's cleaning workload for the aerosol generating device 100, and increase the service life of the aerosol generating device 100. Since the aerosol generating assembly 200 is disposable, it does not need to be cleaned and can be discarded after extraction. Moreover, the method of detecting the temperature of the aerosol matrix part 210 through the corresponding change of the sensor 220 can improve the accuracy of the detection process, avoid the generation of harmful substances by the aerosol matrix part 210, and help improve the safety of users during use.

[0118] In a possible embodiment, the aerosol generating device 100 also includes: a shell 130 and a resonance column 140, and the resonance cavity 110 is arranged in the shell 130; the first end of the resonance column 140 is connected to the bottom wall of the resonance cavity 110, and the second end of the resonance column 140 is arranged opposite to the aerosol generating component 200.

[0119] In this embodiment, the resonant column 140 is installed in the atomizing chamber, and the diameter of the resonant column 140 is smaller than the diameter of the atomizing chamber, so a gap is provided between the outer side wall of the atomizing chamber and the inner side wall of the atomizing chamber, and microwaves can be conducted within this partial spacing. The resonant column 140 can be used as a conductor, and the resonant column 140 can be made of a metal material. For example, the resonant column 140 is made of copper, aluminum, iron, etc. or their alloys. The resonant column 140 is used to transmit microwaves and increase the microwave transmission rate. The microwaves are not prone to attenuation when they are conducted in the atomizing chamber, which improves the effect of microwaves on the aerosol generating matrix, so that microwaves can act on the aerosol generating matrix efficiently and quickly, which is conducive to meeting the user's use needs.

[0120] like Figure 5As shown, in a possible embodiment, the housing 130 includes: a first body 131 and a second body 132 , the second body 132 is detachably connected to the first body 131 , and the first body 131 and the second body 132 enclose a resonant cavity 110 .

[0121] In this embodiment, the connection mode of the first body 131 and the second body 132 is defined, and the first body 131 can be detached from the second body 132. When the aerosol generating device 100 needs to be cleaned after being used for a long time, the first body 131 can be detached from the second body 132, thereby opening the opening of the resonance cavity 110, which can facilitate the cleaning of the resonance cavity 110 separately, improve the cleaning convenience of the aerosol generating device 100, and further improve the user's convenience in using the aerosol generating device 100. Moreover, when the aerosol generating device 100 is damaged, the sub-parts in the aerosol generating device 100 can be replaced separately, reducing the maintenance cost of the aerosol generating device 100.

[0122] For example, mounting holes may be provided on the first body 131 and the second body 132 , and the mounting seat 133 may be mounted on the body by passing a locking member through the mounting holes.

[0123] like Figure 5 As shown, in a possible embodiment, a mounting seat 133 is provided on the first body 131 or the second body 132 , and the mounting seat 133 is provided with a receiving cavity, and a part of the aerosol matrix part 210 is received in the receiving cavity.

[0124] In this embodiment, the mounting seat 133 separates the aerosol matrix portion 210 and the resonance column 140 to prevent the resonance column 140 from contacting the aerosol matrix, thereby preventing the resonance column 140 from being contaminated and reducing the workload of cleaning the resonance column 140 .

[0125] In a possible application, the mounting seat 133 is made of a non-conductive material with certain strength and low dielectric loss, such as PEEK material, PTFE, microwave transparent ceramics, glass, silicon carbide, aluminum oxide, etc. The inner wall surface of the accommodating portion has a local convex structure, the purpose of which is to maintain smooth airflow during suction and reduce suction resistance.

[0126] In a possible embodiment, the resonant cavity 110 includes: a strong field region, and the receptor 220 in the aerosol generating component 200 is located in the strong field region of the resonant cavity 110, and the strong field region is a strong field region of microwaves formed by the microwave component 120 feeding microwaves into the resonant cavity 110.

[0127] In this embodiment, the microwave component 120 feeds microwaves into the atomization cavity, and the microwaves are conducted in the atomization cavity. Affected by the microwave transmission characteristics, a strong field region and a weak field region are formed in the atomization cavity. The aerosol generating matrix in the body is arranged in the strong field region of the atomization cavity, which can ensure the microwave heating atomization effect on the aerosol generating matrix. Therefore, by also arranging the identification element in the strong field region, it can be ensured that the identification element can affect the resonant frequency of the aerosol generating component 200.

[0128] An embodiment of the present invention proposes an aerosol generating system, including an aerosol generating assembly as in any of the above embodiments; an aerosol generating device as in any of the above embodiments, wherein a portion of the aerosol generating assembly can be plugged into the aerosol generating device. Therefore, the aerosol generating system has all the beneficial effects of the aerosol generating assembly as in any of the above possible embodiments, and has all the beneficial effects of the aerosol generating device as in any of the above possible embodiments, which will not be described in detail here.

[0129] In some embodiments of the present invention, a control method for an aerosol generating system is proposed. The aerosol generating system includes an aerosol generating component and an aerosol generating device. The aerosol generating component includes: an aerosol matrix part and a receptor, and the receptor is arranged in the aerosol matrix part. The aerosol generating device includes: a resonant cavity and a microwave component, and the microwave component is used to feed microwaves into the resonant cavity.

[0130] like Figure 6 As shown, the control method of the aerosol generating system includes:

[0131] Step S102, controlling the microwave component to perform frequency sweeping operation within the microwave frequency range to search for a target microwave frequency within the microwave frequency range;

[0132] Step S104, controlling the microwave component to feed microwaves into the resonant cavity at a target microwave frequency, and obtaining a voltage standing wave ratio of the microwave component;

[0133] Step S106, determining the temperature of the sensor according to the voltage standing wave ratio;

[0134] Step S108, determining the working state of the microwave component according to the temperature of the susceptor.

[0135] This embodiment provides a control method for controlling an aerosol generating system, wherein microwaves are used to heat an aerosol matrix portion, wherein the aerosol matrix portion may be a solid aerosol generating matrix or a liquid aerosol generating matrix. A resonant cavity for accommodating the aerosol matrix portion is provided in the aerosol generating device, and a microwave component can feed microwaves into the resonant cavity, and the aerosol matrix portion is heated and atomized under the action of microwaves.

[0136] The aerosol generating device receives the instruction to start atomization and controls the microwave component to perform frequency sweeping operation within the microwave frequency range. Specifically, the microwave component is controlled to feed microwaves into the resonant cavity in turn according to each microwave frequency within the microwave frequency range. The target microwave frequency in the microwave frequency range is determined according to the change of the parameters in the atomization cavity. The target microwave frequency is the optimal frequency point for the operation of the microwave component in the current resonant cavity state, that is, the microwave frequency with the largest microwave absorption in the resonant cavity. Heating the aerosol matrix part with microwaves of the target microwave frequency can help improve the atomization effect of the aerosol matrix part.

[0137] When the temperature of the susceptor reaches its own Curie temperature, the susceptor itself can undergo a phase change, and the corresponding change of the susceptor can cause the phenomenon of impedance mismatch, thereby increasing the voltage standing wave ratio. When the voltage standing wave ratio is greater than the set value, it means that the temperature of the current aerosol matrix part has reached the set temperature. At this time, the temperature of the aerosol matrix part is relatively high. In order to avoid the temperature of the aerosol matrix part continuing to rise and produce harmful substances, the control circuit can control the microwave component to reduce the output power or stop working, thereby realizing the function of temperature control of the aerosol generating component. When the temperature of the aerosol matrix part is lower than the set temperature, the susceptor can return to its original phase, and the voltage standing wave ratio decreases, indicating that the temperature of the current aerosol matrix part has decreased, and the microwave component can be controlled to continue to heat the aerosol matrix part.

[0138] By changing the voltage standing wave ratio of the microwave component through the corresponding change of the receptor, non-contact temperature control of the aerosol matrix can be achieved, and there is no need to set a circuit detection component that is in contact with the aerosol matrix, so as to avoid the circuit detection component from getting dirty and reduce the user's cleaning workload for the aerosol generating device. Moreover, the method of detecting the temperature of the aerosol matrix part through the corresponding change of the receptor can improve the accuracy of the detection process, avoid the generation of harmful substances in the aerosol matrix part, and help improve the safety of the user during use. In a possible embodiment, the working state of the microwave component is determined according to the temperature of the receptor, including: based on the temperature of the receptor reaching the Curie temperature, the output power of the microwave component is reduced or the microwave component is turned off; when the temperature of the receptor is less than the Curie temperature, the microwave component is controlled to work at rated power.

[0139] In this embodiment, when the susceptor reaches the Curie temperature, the temperature of the aerosol matrix is ​​relatively high. In order to prevent the temperature of the aerosol matrix from continuing to rise and generating harmful substances, the control circuit can control the microwave component to reduce the output power or stop working, thereby realizing the function of controlling the temperature of the aerosol generating component. When the temperature of the susceptor is lower than the Curie temperature, the susceptor can be restored to its original phase, and the voltage standing wave ratio decreases, indicating that the temperature of the current aerosol matrix has been reduced, and the microwave component can be controlled to continue heating the aerosol matrix.

[0140] In a possible embodiment, after searching for the target microwave frequency in the microwave frequency range, it also includes: determining the matching state of the aerosol generating component and the microwave component based on the numerical relationship between the target microwave frequency and the set frequency; based on the aerosol generating component and the microwave component being in a matching state, controlling the microwave component to feed microwaves into the resonant cavity at the target microwave frequency; based on the aerosol generating component and the microwave component being in a non-matching state, controlling the microwave component to stop running and outputting a prompt message.

[0141] In this embodiment, the matching state of the aerosol generating assembly and the microwave assembly can be determined according to the numerical relationship between the target microwave frequency and the set frequency range, that is, whether the aerosol generating assembly matches the microwave assembly. Then, according to the matching state of the aerosol generating assembly and the microwave assembly, the operation of the microwave assembly is controlled.

[0142] The detection element can change the microwave frequency of the resonant cavity. When an aerosol generating assembly with different detection elements is assembled to an aerosol generating device, the resonant frequency of the resonant cavity is different. When the microwave frequency is the same as the resonant frequency of the current resonant cavity, the heating effect on the aerosol matrix part is the best. At this time, the microwave frequency is the target microwave frequency.

[0143] When the material of the test piece that serves as the genuine product is determined, the resonant frequency of the resonant cavity is also determined. At this time, the microwave frequency that is equal to the resonant frequency is the set frequency.

[0144] The current target microwave frequency is compared with the set frequency range. When the difference between the target microwave frequency and the set frequency is greater than the set value, the difference between the target microwave frequency and the set frequency is large, and it is considered that the aerosol generating component and the microwave component do not match, that is, the current aerosol generating component is a counterfeit.

[0145] When the difference between the target microwave frequency and the set frequency is less than the set value, the difference between the target microwave frequency and the set frequency is small, and it is considered that the aerosol generating component and the microwave component match, that is, the current aerosol generating component is authentic.

[0146] By comparing the target microwave frequency with the set frequency, the anti-counterfeiting function of the aerosol generating component is achieved, which is beneficial to protecting the market order and the legitimate rights and interests of manufacturers and consumers.

[0147] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0148] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0149] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aerosol generating assembly, characterized in that: include: Aerosol matrix section; A receptor, disposed in the aerosol matrix, the receptor having a Curie temperature less than 400 degrees Celsius; The receptor is capable of changing the resonant frequency within the resonant cavity; When the susceptor reaches the Curie temperature, the change value of the magnetic permeability and / or dielectric constant of the susceptor is greater than the set value; The number of the receptors is at least two, and the at least two receptors are arranged at intervals along the length direction of the aerosol matrix portion, so that the receptors can detect the temperature of multiple positions of the aerosol matrix portion; The sensor comprises a ferroelectric sensor or a piezoelectric sensor; The aerosol generating component can extend into the resonant cavity, and the resonant cavity includes: a strong field area, and the receptor in the aerosol generating component is located in the strong field area of ​​the resonant cavity, and the strong field area is a strong field area of ​​microwaves formed by the microwave component feeding microwaves into the resonant cavity.

2. The aerosol generating assembly according to claim 1, characterized in that The sensor comprises: a ferroelectric / piezoelectric ceramic sensor with a perovskite structure; and / or Ferroelectric / piezoelectric thin film sensor; and / or Ceramic thermistor sensor.

3. The aerosol generating assembly according to claim 1, characterized in that The receptor comprises at least one of a sodium bismuth titanate receptor, a barium bismuth niobate receptor, a barium titanate receptor, a sodium niobate receptor, a niobium titanate receptor, a barium strontium titanate receptor, and a niobate receptor.

4. An aerosol generating assembly according to any one of claims 1 to 3, characterized in that The receptor extends along the length direction of the aerosol matrix portion.

5. An aerosol generating assembly according to any one of claims 1 to 3, characterized in that The aerosol matrix portion includes: an aerosol matrix segment, and the length of the receptor is less than or equal to the length of the aerosol matrix segment.

6. An aerosol generating device for heating an aerosol generating assembly as claimed in any one of claims 1 to 5, characterized in that: The aerosol generating device comprises: a resonant cavity into which the aerosol generating assembly can extend; A microwave component, wherein the microwave component is used to feed microwaves into the resonant cavity, and the microwave component is provided with a detection component and a control circuit, wherein the detection component is used to obtain the voltage standing wave ratio of the microwave component, and the control circuit determines whether the receptor reaches the Curie temperature based on the voltage standing wave ratio, and reduces the output power of the microwave component or shuts down the microwave component based on whether the receptor reaches the Curie temperature.

7. The aerosol generating device according to claim 6, characterized in that: The aerosol generating device also includes: a housing, wherein the resonant cavity is disposed in the housing; A resonant column, wherein the first end of the resonant column is connected to the bottom wall of the resonant cavity, and the second end of the resonant column is arranged opposite to the aerosol generating component.

8. An aerosol generating system, characterized in that: include: An aerosol generating assembly as claimed in any one of claims 1 to 5; According to the aerosol generating device as described in claim 6 or 7, a part of the aerosol generating component can be inserted into the aerosol generating device.

9. A method for controlling an aerosol generating system, characterized in that: The aerosol generating system comprises an aerosol generating component and an aerosol generating device, wherein the aerosol generating component comprises: an aerosol matrix part and a sensor, wherein the sensor is arranged in the aerosol matrix part, and the aerosol generating device comprises: a resonant cavity and a microwave component, wherein the microwave component is used to feed microwaves into the resonant cavity; The control method comprises: Controlling the microwave component to perform frequency sweeping within a microwave frequency range to search for a target microwave frequency within the microwave frequency range; Controlling the microwave component to feed microwaves into the resonant cavity at the target microwave frequency, and obtaining a voltage standing wave ratio of the microwave component; determining the temperature of the receptor according to the voltage standing wave ratio; The operating state of the microwave component is determined according to the temperature of the susceptor.

10. The control method of the aerosol generating system according to claim 9, characterized in that: Determining the working state of the microwave component according to the temperature of the susceptor includes: reducing the output power of the microwave component or shutting down the microwave component based on the temperature of the susceptor reaching the Curie temperature; The temperature of the susceptor is lower than the Curie temperature, and the microwave component is controlled to operate at rated power.

11. The control method of the aerosol generating system according to claim 9 or 10, characterized in that: After searching for the target microwave frequency in the microwave frequency range, the method further includes: determining a matching state between the aerosol generating component and the microwave component according to a numerical relationship between the target microwave frequency and a set frequency range; Based on the aerosol generating component and the microwave component being in a matching state, controlling the microwave component to feed microwaves into the resonant cavity at a target microwave frequency; Based on the fact that the sol generating component and the microwave component are in a non-matching state, the microwave component is controlled to stop running and a prompt message is output.

Images