Electronic atomization device and microwave control method thereof

Abstract

To provide an electronic atomization device that has high heating efficiency and extends a service life of equipment, and a microwave control method thereof.SOLUTION: An electronic atomization device comprises: an atomization chamber for accommodating an aerosol-generating substrate; a microwave generation circuit for generating microwaves on the basis of a preset microwave frequency; a microwave transmission antenna for transmitting the microwaves; a feedback collection circuit for collecting a feedback signal corresponding to the microwaves at the preset microwave frequency transmitted by the microwave transmission antenna; and a microwave control circuit. The microwave control circuit is connected to the microwave generation circuit and the feedback collection circuit, is used to determine the preset microwave frequency and to control the microwave generation circuit to generate microwaves on the basis of the preset microwave frequency, and selects a microwave transmission frequency on the basis of the feedback signal so as to maintain or modify the preset microwave frequency.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the field of aerosol generating devices, and more particularly to an electronic atomizing device utilizing microwave heating and a microwave control method therefor. [Background technology]

[0002] Conventional aerosol generators generate aerosol by heating a heating tip with an electric current, which then heats the aerosol-generating substrate directly. In this heating method, the heating tip and the aerosol-generating substrate come into direct contact with each other, and the aerosol generates residue on the heating tip during the high-temperature atomization process, which is difficult to clean. This long-term accumulation of residue affects the heating efficiency of the heating tip, shortening the service life of the aerosol generator and resulting in a poor user experience. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide an electronic atomization device and a microwave control method thereof, in order to overcome the above-mentioned drawbacks of the prior art. [Means for solving the problem]

[0004] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0005] An electronic atomization device for atomizing an aerosol-generating substrate by heating includes: an atomization chamber for accommodating the aerosol-generating substrate; a microwave generation circuit for generating microwaves based on a preset microwave frequency; a microwave transmission antenna connected to the microwave generation circuit for transmitting microwaves to the atomization chamber and heating the aerosol-generating substrate by sweeping and transmitting microwaves within a range of preset microwave frequencies; a feedback collection circuit for collecting a feedback signal corresponding to the microwaves of the preset microwave frequency transmitted by the microwave transmission antenna; and a microwave control circuit connected to the microwave generation circuit and the feedback collection circuit, respectively, for determining the preset microwave frequency, controlling the microwave generation circuit to generate microwaves based on the preset microwave frequency, and selecting a microwave transmission frequency based on the feedback signal to maintain or modify the preset microwave frequency.

[0006] Furthermore, in the electronic atomization device described in the present invention, the feedback signal is a feedback current value and the feedback collecting circuit is a current collecting circuit, or the feedback signal is a feedback voltage value and the feedback collecting circuit is a voltage collecting circuit, or the feedback signal is a feedback capacitance value and the feedback collecting circuit is a capacitance collecting circuit, or the feedback signal is a feedback temperature value and the feedback collecting circuit is a temperature collecting circuit.

[0007] Furthermore, in the electronic atomization device described in the present invention, the feedback signal is a backward microwave power, and the feedback collection circuit is a microwave backward power detector.

[0008] Furthermore, in the electronic atomization device described in the present invention, the microwave reverse power detector is used to detect the reverse microwave power received by the microwave transmitting antenna.

[0009] Furthermore, the electronic atomizer described in the present invention also includes a microwave forward power detector connected to the microwave control circuit, wherein the microwave forward power detector is used to collect microwave transmission power.

[0010] The electronic atomizer described in the present invention further includes a power amplifier. The output terminal of the microwave generating circuit is connected to a first input terminal of the power amplifier, and the output terminal of the power amplifier is connected to the microwave transmitting antenna. The microwave control circuit is connected to the power amplifier. The microwave control circuit adjusts the power amplifier based on the feedback signal.

[0011] The electronic atomizer described in the present invention further includes a power regulator, the microwave control circuit is connected to the input terminal of the power regulator, and the output terminal of the power regulator is connected to the second input terminal of the power amplifier, and the microwave control circuit adjusts the power regulator based on the feedback signal.

[0012] The present invention also provides a non-combustion and heating electronic atomizer, which includes an atomization chamber for accommodating an aerosol-generating substrate, a microwave generating circuit, a feedback collecting circuit, and a microwave control circuit, the microwave control circuit being connected to the microwave generating circuit and the feedback collecting circuit, respectively, and the microwave generating circuit generating microwaves based on a preset microwave frequency, and a microwave transmitting antenna connected to the microwave generating circuit for sweeping and transmitting microwaves within a preset microwave frequency range to transmit microwaves to the atomization chamber and heat the aerosol-generating substrate.

[0013] The feedback collecting circuit collects a feedback signal corresponding to microwaves at the preset microwave frequency transmitted by the microwave transmitting antenna, the microwave control circuit is used to determine the preset microwave frequency and control the microwave generating circuit to generate microwaves based on the preset microwave frequency, and the microwave control circuit selects a microwave transmitting frequency based on the feedback signal to maintain or modify the preset microwave frequency.

[0014] Furthermore, in the non-combustion and heating electronic atomization device described in the present invention, the feedback signal is a feedback current value and the feedback collecting circuit is a current collecting circuit; alternatively, the feedback signal is a feedback voltage value and the feedback collecting circuit is a voltage collecting circuit; alternatively, the feedback signal is a feedback capacitance value and the feedback collecting circuit is a capacitance collecting circuit; or alternatively, the feedback signal is a feedback temperature value and the feedback collecting circuit is a temperature collecting circuit.

[0015] Furthermore, in the non-combustion and heating electronic atomization device described in the present invention, the feedback signal is a backward microwave power, and the feedback collecting circuit is a microwave backward power detector.

[0016] Furthermore, in the non-combustion and heating electronic atomization device described in the present invention, the microwave reverse power detector is used to detect the reverse microwave power received by the microwave transmitting antenna.

[0017] Furthermore, the non-combustion and heating electronic atomization device described in the present invention also includes a microwave forward power detector connected to the microwave control circuit, and the microwave forward power detector is used to collect microwave transmission power.

[0018] Furthermore, the non-combustion and heating electronic atomizer described in the present invention also includes a power amplifier. The output terminal of the microwave generating circuit is connected to a first input terminal of the power amplifier, and the output terminal of the power amplifier is connected to the microwave transmitting antenna. The microwave control circuit is connected to the power amplifier. The microwave control circuit adjusts the power amplifier based on the feedback signal.

[0019] Furthermore, the non-combustion and heating electronic atomizer described in the present invention also includes a power regulator. The microwave control circuit is connected to the input terminal of the power regulator, and the output terminal of the power regulator is connected to the second input terminal of the power amplifier. The microwave control circuit adjusts the power regulator based on the feedback signal.

[0020] Furthermore, the non-combustion and heating electronic atomization device described in the present invention also includes a microwave focusing device, in which a microwave transmitting antenna is located, and the microwave focusing device is used to focus at least a portion of the microwaves transmitted by the microwave transmitting antenna into the atomization chamber.

[0021] Furthermore, in the non-combustion and heating electronic atomization device described in the present invention, the inner layer of the microwave focusing device is a microwave reflecting layer.

[0022] Furthermore, in the non-combustion and heating electronic atomization device described in the present invention, the outer layer of the microwave focusing device is a microwave shielding layer.

[0023] In addition, the present invention also provides a microwave control method for the electronic atomization device, which includes:

[0024] S1: The microwave control circuit controls the microwave generating circuit to generate microwaves and causes the microwave transmitting antenna to sweep and transmit microwaves within a preset microwave frequency range. The microwaves are used to heat the aerosol-generating substrate in the atomization chamber.

[0025] S2: A feedback collecting circuit collects a feedback signal corresponding to the microwave and sends the feedback signal to the microwave control circuit.

[0026] S3: After the microwave sweep and transmission is completed, the microwave control circuit selects a microwave transmission frequency based on the feedback signal.

[0027] Furthermore, in the microwave control method described in the present invention, when the microwave control circuit selects a microwave transmission frequency based on the feedback signal in step S3, the microwave control circuit selects a microwave transmission frequency and a microwave transmission power based on the feedback signal.

[0028] Furthermore, in the microwave control method described in the present invention, the feedback signal in step S2 is the backward microwave power.

[0029] In step S3, when the microwave control circuit selects a microwave transmission frequency based on the feedback signal, the microwave control circuit selects a microwave transmission frequency corresponding to a minimum value of the reverse microwave power.

[0030] Furthermore, the microwave control method described in the present invention also includes the following steps before step S1:

[0031] S101: The microwave control circuit receives a microwave frequency selection command; Or, S102: The microwave control circuit receives an aerosol-generating substrate installation completion command; Or, S103: The microwave control circuit receives an inhalation command. Or, S104: The microwave control circuit is set at predetermined inhalation time intervals. [Effects of the Invention]

[0032] The electronic atomization device and microwave control method thereof according to the present invention have the following beneficial effects: In the present invention, microwaves are used to directly heat the aerosol-generating substrate, and the microwave transmission frequency is adjusted by sweeping, which results in high heating efficiency and an extended service life of the device.

[0033] The present invention will be further described below in combination with the drawings and examples. [Brief explanation of the drawings]

[0034] [Figure 1] FIG. 1 is a schematic structural diagram of an electronic atomization device provided in one embodiment. [Figure 2] FIG. 2 is a schematic structural diagram of an electronic atomization device provided in one embodiment. [Figure 3] FIG. 3 is a schematic structural diagram of an electronic atomization device provided in one embodiment. [Figure 4] FIG. 4 is a schematic structural diagram of an electronic atomization device provided in one embodiment. [Figure 5] FIG. 5 is a schematic structural diagram of an electronic atomization device provided in one embodiment. [Figure 6] FIG. 6 is a schematic structural diagram of a non-combustion and heating electronic atomization device according to another embodiment. [Figure 7] FIG. 7 is a schematic structural diagram of a non-combustion and heating electronic atomization device according to another embodiment. [Figure 8] FIG. 8 is a flowchart of a microwave control method provided in another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0035] In order to make the technical features, objects and effects of the present invention more clearly understood, specific embodiments of the present invention will be described in detail with reference to the drawings.

[0036] In a preferred embodiment, referring to FIG. 1 , the electronic atomizer of this embodiment is used to atomize an aerosol-generating substrate by heating. The aerosol-generating substrate may be solid tobacco leaves, liquid liquid, or the like. The electronic atomizer includes an atomization chamber, a microwave control circuit, a microwave generating circuit, a microwave transmitting antenna, and a feedback collecting circuit. The atomization chamber is used to accommodate the aerosol-generating substrate. The microwave control circuit is connected to the microwave generating circuit and the feedback collecting circuit, respectively, and the microwave generating circuit is connected to the microwave transmitting antenna.

[0037] The operation of the electronic atomization device is as follows: the microwave control circuit determines a preset microwave frequency and controls the microwave generation circuit to generate microwaves based on the preset microwave frequency. The microwave transmission antenna sweeps and transmits microwaves within the preset microwave frequency range, and at least a portion of the microwaves are focused on the atomization chamber to heat the aerosol-generating substrate. It should be noted that the microwave transmission antenna's sweep and transmission of microwaves within the preset microwave frequency range must be achieved by the microwave control circuit. The microwave control circuit sweeps and determines the preset microwave frequency within the preset microwave frequency range. For example, the frequency may be gradually increased from the minimum frequency within the preset microwave frequency range to the maximum frequency within the preset microwave frequency range. Alternatively, the frequency may be gradually increased from the minimum frequency within the preset microwave frequency range to the maximum frequency within the preset microwave frequency range at a predetermined frequency interval. Alternatively, the frequency may be gradually decreased from the maximum frequency within the preset microwave frequency range to the minimum frequency within the preset microwave frequency range. Alternatively, the frequency is gradually decreased from the maximum frequency within the range of preset microwave frequencies to the minimum frequency within the range of preset microwave frequencies at preset frequency intervals. Also, for example, the range of preset microwave frequencies includes at least two preset microwave frequency points, and the preset microwave frequency points are sequentially transmitted to the microwave generating circuit in a preset order.

[0038] Furthermore, after the microwave transmitting antenna transmits microwaves, the feedback collecting circuit collects a feedback signal corresponding to the microwaves of the preset microwave frequency transmitted by the microwave transmitting antenna and transmits the feedback signal to the microwave control circuit. The microwave control circuit selects a microwave transmission frequency based on the feedback signal to maintain or modify the preset microwave frequency. That is, by selecting an appropriate microwave transmission frequency, the aerosol-forming substrate in the atomization chamber is optimally atomized. Optionally, the microwave transmission frequency at which the aerosol-forming substrate absorbs the most is selected as the optimal microwave transmission frequency. The electronic atomization device transmits microwaves at the optimal microwave transmission frequency until the next microwave sweep.

[0039] In this embodiment, microwaves are used to directly heat the aerosol-generating substrate, and the microwave transmission frequency is adjusted by sweeping, resulting in high heating efficiency and extended device life.

[0040] In one embodiment of the electronic atomization device, the feedback signal is a feedback current value, and the feedback collecting circuit is a current collecting circuit, which uses the induced current value generated by the target object under the action of microwaves as the feedback current value.

[0041] In one embodiment of the electronic atomization device, the feedback signal is a feedback voltage value, and the feedback collecting circuit is a voltage collecting circuit, which takes the induced voltage value generated by the target under the action of microwaves as the feedback voltage value.

[0042] In one embodiment of the electronic atomization device, the feedback signal is a feedback capacitance value, and the feedback collecting circuit is a capacitance collecting circuit, which uses the induced capacitance value generated by the target object under the action of microwaves as the feedback capacitance value.

[0043] In one embodiment of the electronic atomization device, the feedback signal is a feedback temperature value, and the feedback collection circuit is a temperature collection circuit. The temperature collection circuit collects temperature values ​​of the target object under the action of microwaves. Optionally, the target object can be an aerosol-forming substrate, and the temperature collection circuit collects temperature values ​​of the aerosol-forming substrate under the action of microwaves.

[0044] In one embodiment of the electronic atomization device, referring to FIG. 2, the feedback signal is the reverse microwave power, and the feedback collection circuit is a microwave reverse power detector. After microwave transmission, not all of the microwaves are absorbed by the aerosol-generating substrate. The unabsorbed microwaves are detected as the reverse microwave power, thereby obtaining the reverse microwave power. Optionally, the microwave transmitting antenna serves as a receiver for the unabsorbed microwaves, and the microwave reverse power detector detects the reverse microwave power received by the microwave transmitting antenna. The microwave transmitting antenna absorbs the portion of the microwaves not absorbed by the aerosol-generating substrate, and the microwave reverse power detector detects the microwave power absorbed by the microwave transmitting antenna, thereby obtaining the reverse microwave power. Furthermore, after obtaining the reverse microwave power, the microwave control circuit selects an optimal microwave transmission frequency based on the reverse microwave power. For example, the microwave control circuit selects the microwave transmission frequency corresponding to the minimum value of the reverse microwave power. Alternatively, the microwave control circuit selects a microwave transmission frequency in a range around the microwave transmission frequency corresponding to a minimum value of the reverse microwave power.

[0045] In one embodiment of the electronic atomization device, referring to FIG. 3, the electronic atomization device of this embodiment further includes a microwave forward power detector connected to the microwave control circuit. The microwave forward power detector is used to collect microwave transmission power. The microwave control circuit can select an optimal microwave transmission frequency based on the microwave transmission power and the reverse microwave power. For example, the optimal microwave transmission frequency can be selected based on the ratio between the reverse microwave power and the microwave transmission power, and the microwave transmission frequency corresponding to the minimum ratio between the reverse microwave power and the microwave transmission power can be selected.

[0046] In one embodiment of the electronic atomization device, referring to FIG. 4, the electronic atomization device of this embodiment further includes a power amplifier. The output terminal of the microwave generating circuit is connected to a first input terminal of the power amplifier, and the output terminal of the power amplifier is connected to a microwave transmitting antenna. In addition, a microwave control circuit is connected to the power amplifier. The microwave control circuit adjusts the power amplifier based on a feedback signal. As can be seen, the microwave control circuit can control the amplification factor of the power amplifier.

[0047] In one embodiment of the electronic atomization device, referring to FIG. 5, the electronic atomization device of this embodiment further includes a power regulator. The microwave control circuit is connected to the input terminal of the power regulator, and the output terminal of the power regulator is connected to the second input terminal of the power amplifier. The microwave control circuit adjusts the power regulator based on a feedback signal. As can be appreciated, the power amplifier and the power regulator may be two separate electronic components or may be integrated into one electronic component. The integrated electronic component can perform the functions of both the power amplifier and the power regulator. Optionally, the microwave control circuit can simultaneously adjust the power amplifier and the power regulator based on the feedback signal to achieve a wider range of microwave transmission power adjustment.

[0048] In a preferred embodiment, the electronic atomizer of this embodiment is a non-combustion / heating electronic atomizer. Referring to FIGS. 6 and 7, this embodiment of the electronic atomizer includes an aerosol-generating substrate 10, a substrate-fixing frame 20, an atomization chamber 30, a microwave-transmitting antenna 40, a circuit board 50, a power supply battery 60, and a housing 70. The substrate-fixing frame 20 is used to position and fix the aerosol-generating substrate 10. A microwave-generating circuit, a feedback collection circuit, and a microwave control circuit are integrated on the circuit board 50. The power supply battery 60 is used to supply electricity to the non-combustion / heating electronic atomizer. The circuit board 50 and the power supply battery 60 are located within the housing 70. As can be seen, the substrate-fixing frame 20 is made of a microwave-transparent material to avoid microwave absorption. Furthermore, the microwave-transmitting antenna 40 has multiple mounting positions, and therefore, this embodiment will be described by way of example.

[0049] In FIG. 6 , the microwave transmitting antenna 40 is located at the bottom of the atomization chamber 30 and is attached adjacent to the housing 70. The electronic atomization device further includes a microwave focusing device 80, in which the microwave transmitting antenna 40 is located. When the microwave transmitting antenna 40 transmits microwaves, the microwave focusing device 80 focuses at least a portion of the microwaves transmitted by the microwave transmitting antenna 40 onto the location of the aerosol-generating substrate 10 in the atomization chamber 30, thereby heating the aerosol-generating substrate 10. Optionally, the inner layer of the microwave focusing device 80 is a microwave reflecting layer. The use of the microwave reflecting layer allows the microwaves to be more effectively focused into the atomization chamber 30, thereby improving microwave utilization and heating efficiency. Furthermore, the outer layer of the microwave focusing device 80 is a microwave shielding layer. The shielding layer can absorb unused microwaves, preventing them from scattering outside the non-combustion / heating electronic atomization device and causing microwave contamination.

[0050] In Figure 7, the microwave transmitting antenna 40 is wrapped around the atomization chamber 30 or the substrate fixing frame 20. The microwave transmitting antenna 40 transmits microwaves. Most of the microwaves transmitted in this manner are concentrated within the atomization chamber 30, i.e., on the aerosol-generating substrate 10. In addition, some of the microwaves emitted to the surrounding area are reflected by the microwave focusing device 80 and then focused again on the aerosol-generating substrate 10, thereby heating the aerosol-generating substrate 10.

[0051] In a preferred embodiment, the microwave control method of this embodiment is applied to the electronic atomization device of the above embodiment, as shown in Figure 8. Specifically, the microwave control method includes the following steps:

[0052] S1: The microwave control circuit controls the microwave generating circuit to generate microwaves and causes the microwave transmitting antenna to sweep and transmit microwaves within a preset microwave frequency range. The microwaves are used to heat the aerosol-generating substrate in the atomization chamber. Specifically, the microwave control circuit determines a preset microwave frequency and controls the microwave generating circuit to generate microwaves based on the preset microwave frequency. The microwave transmitting antenna sweeps and transmits microwaves within the preset microwave frequency range, and at least some of the microwaves are focused on the atomization chamber to heat the aerosol-generating substrate. It should be noted that the microwave transmitting antenna's sweep and transmission of microwaves within the preset microwave frequency range must be achieved by the microwave control circuit. The microwave control circuit sweeps and determines the preset microwave frequency within the preset microwave frequency range. For example, the frequency may be gradually increased from the minimum frequency within the preset microwave frequency range to the maximum frequency within the preset microwave frequency range. Alternatively, the frequency may be gradually increased from the minimum frequency within the range of preset microwave frequencies to the maximum frequency within the range of preset microwave frequencies at preset frequency intervals. Alternatively, the frequency may be gradually decreased from the maximum frequency within the range of preset microwave frequencies to the minimum frequency within the range of preset microwave frequencies. Alternatively, the frequency may be gradually decreased from the maximum frequency within the range of preset microwave frequencies to the minimum frequency within the range of preset microwave frequencies at preset frequency intervals. Also, for example, the range of preset microwave frequencies may include at least two preset microwave frequency points, and each preset microwave frequency point is sequentially transmitted to the microwave generating circuit in a preset order.

[0053] S2: The feedback collection circuit collects a feedback signal corresponding to the microwave and sends the feedback signal to the microwave control circuit. Specifically, after the microwave transmitting antenna transmits the microwave, the feedback collection circuit collects a feedback signal corresponding to the microwave of the preset microwave frequency transmitted by the microwave transmitting antenna and sends the feedback signal to the microwave control circuit.

[0054] S3: After the microwave sweep and transmission are completed, the microwave control circuit selects a microwave transmission frequency based on the feedback signal. Specifically, after the microwave sweep and transmission are completed, the microwave control circuit selects a microwave transmission frequency based on the feedback signal to maintain or modify the preset microwave frequency. That is, by selecting an appropriate microwave transmission frequency, the aerosol-generating substrate in the atomization chamber is placed in an optimal atomization state. Optionally, the microwave transmission frequency that is most absorbed by the aerosol-generating substrate is selected as the optimal microwave transmission frequency. The electronic atomization device transmits microwaves at this optimal microwave transmission frequency until the next microwave sweep.

[0055] In this embodiment, microwaves are used to directly heat the aerosol-generating substrate, and the microwave transmission frequency is adjusted by sweeping, resulting in high heating efficiency and extended device life.

[0056] In one embodiment of the microwave control method, in step S3, when the microwave control circuit selects the microwave transmission frequency based on the feedback signal, the method includes the following: the microwave control circuit selects the microwave transmission frequency and the microwave transmission power based on the feedback signal, and simultaneously adjusts the microwave transmission frequency and the microwave transmission power to achieve an optimal atomization state for the aerosol-generating substrate in the atomization chamber.

[0057] In one embodiment of the microwave control method, the feedback signal in step S2 is the backward microwave power. After the microwaves are transmitted, not all of the microwaves are absorbed by the aerosol-generating substrate, and the backward microwave power is obtained by detecting the unabsorbed microwaves as the backward microwave power. Correspondingly, in step S3, when the microwave control circuit selects a microwave transmission frequency based on the feedback signal, the microwave control circuit selects the microwave transmission frequency corresponding to the minimum value of the backward microwave power.

[0058] In one embodiment of the microwave control method, the microwave heating type non-combustion and heating electronic atomizer may have errors in the microwave focusing device during the production process. Due to these errors, the microwave transmission frequency preset at the factory may not necessarily be the optimal microwave transmission frequency, so the preset microwave transmission frequency needs to be calibrated. Therefore, the following step is further included before step S1:

[0059] S101: The microwave control circuit receives a microwave frequency selection command. The microwave frequency selection command can be generated by a physical button, a virtual button, or the like.

[0060] Of course, this step may be completed at the factory or upon first use by the user.

[0061] In one embodiment, the microwave control method is different for different aerosol-generating substrates, i.e., different aerosol-generating substrates resonate and generate heat at different microwave frequencies. Therefore, in order to achieve an optimal heating effect, the method further includes the following steps before step S1:

[0062] S102: The microwave control circuit receives an aerosol-generating substrate installation completion command, i.e., after the user installs or replaces the aerosol-generating substrate, the aerosol-generating substrate installation completion command is generated.

[0063] In one embodiment, the microwave control method includes the following steps before step S1, since the position to be heated on the aerosol-generating substrate changes constantly as the aerosol-generating substrate is consumed.

[0064] S103: The microwave control circuit receives an inhalation command, which is generated each time the user inhales.

[0065] In one embodiment, the microwave control method includes the following steps before step S1, since the position to be heated on the aerosol-generating substrate changes constantly as the aerosol-generating substrate is consumed.

[0066] S104: The microwave control circuit is set at each preset inhalation time interval.

[0067] Each embodiment of this specification is described in a stepwise manner. The content of each embodiment is the difference between the other embodiments, and reference may be made to the same or similar parts between the embodiments. Furthermore, the apparatuses disclosed in the embodiments are described relatively briefly because they correspond to the methods disclosed in the embodiments. Therefore, reference may be made to the method descriptions for the relevant parts.

[0068] Furthermore, as will be appreciated by those skilled in the art, each exemplary unit and algorithm step described in connection with the embodiments disclosed herein can be realized by electronic hardware, computer software, or a combination thereof. To clearly explain the compatibility between hardware and software, the above description generally describes each exemplary configuration and step based on its function. Whether these functions are ultimately implemented in a hardware or software manner is determined by the specific application and design constraints of the technical solution. Although a skilled artisan may implement the described functions by using different methods for each specific application, such implementation should not be considered as going beyond the scope of the present invention.

[0069] The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly through the use of software modules executed by a processor, or in combination with hardware, which may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), EPROM, EEPROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0070] The above examples are merely for explaining the technical ideas and characteristics of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and to implement it based on the same, and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent modifications and alterations made based on the claims of the present invention shall be considered to fall within the scope of the claims of the present invention.

Claims

1. 1. An electronic atomization device for atomizing an aerosol-forming substrate by heating, comprising: a microwave generating circuit for generating microwaves based on a preset microwave frequency; a microwave transmitting antenna connected to the microwave generating circuit for transmitting microwaves at a sweeping frequency within a preset microwave frequency range to heat the aerosol-generating substrate; a feedback collection circuit for collecting a feedback signal corresponding to microwaves at the preset microwave frequency transmitted by the microwave transmitting antenna; and a microwave control circuit connected to the microwave generating circuit and the feedback collecting circuit, respectively, for determining the preset microwave frequency, controlling the microwave generating circuit to generate microwaves based on the preset microwave frequency, and selecting a microwave transmission frequency based on the feedback signal to maintain or modify the preset microwave frequency; means for generating microwave frequency selection commands; The electronic atomization device, wherein the microwave control circuit calibrates the preset microwave frequency when the microwave frequency selection command is received.

2. The microwave control circuit calibrates the preset microwave frequency when the means is used for the first time or when the microwave frequency selection command is received before the means is used for the first time. The electronic atomizer according to claim 1 .

3. The means includes the microwave frequency selection command generated by a physical button or a virtual button. The electronic atomizer according to claim 1 .

4. the feedback signal is a feedback current value and the feedback collecting circuit is a current collecting circuit; or the feedback signal is a feedback voltage value and the feedback collection circuit is a voltage collection circuit; or the feedback signal is a feedback capacitance value and the feedback collection circuit is a capacitance collection circuit; or the feedback signal is a feedback temperature value and the feedback collection circuit is a temperature collection circuit; or the feedback signal is a reverse microwave power, and the feedback collection circuit is a microwave reverse power detector; The electronic atomizer according to claim 1 .

5. the feedback signal is a feedback current value, and the feedback collecting circuit is a current collecting circuit; The current collecting circuit uses the induced current value generated by the target under the action of microwaves as the feedback current value; or The feedback signal is a feedback voltage value, and the feedback collecting circuit is a voltage collecting circuit, and the voltage collecting circuit takes the induced voltage value generated by the target under the action of microwaves as the feedback voltage value; or The feedback signal is a feedback capacitance value, and the feedback collecting circuit is a capacitance collecting circuit, and the capacitance collecting circuit obtains an induced capacitance value generated by the target under the action of microwaves as the feedback capacitance value. The electronic atomizer according to claim 1 .

6. the feedback signal is a reverse microwave power, and the feedback collection circuit is a microwave reverse power detector; The electronic atomization device further includes a microwave forward power detector connected to a microwave control circuit, the microwave forward power detector being connected to the microwave control circuit; the microwave control circuit selects a microwave transmission frequency at which the microwave transmission power and the reverse microwave power are optimal; The electronic atomizer according to claim 1 .

7. the microwave control circuit selects an optimum microwave transmission frequency based on a ratio value between the reverse microwave power and the microwave transmission power; 7. The electronic atomizer according to claim 6.

8. the electronic atomization device includes an atomization chamber for containing an aerosol-generating substrate, the microwave transmitting antenna being positioned to transmit microwaves toward the atomization chamber; The electronic atomization device further includes a microwave focusing device, the microwave transmitting antenna is located within the microwave focusing device, and the microwave focusing device is used to focus at least a portion of the microwaves transmitted by the microwave transmitting antenna into the atomization chamber. The electronic atomizer according to claim 1 .

9. the inner layer of the microwave focusing device is a microwave reflecting layer, and / or the outer layer of the microwave focusing device is a microwave shielding layer; 9. The electronic atomizer according to claim 8.

10. the electronic atomization device includes an atomization chamber for containing an aerosol-generating substrate, and the microwave transmitting antenna is wrapped around the outside of the atomization chamber and transmits microwaves toward the atomization chamber. The electronic atomizer according to claim 1 .

11. A microwave control method applied to the electronic atomization device according to any one of claims 1 to 10, S1: The microwave control circuit controls the microwave generating circuit to generate microwaves, and causes the microwave transmitting antenna to sweep and transmit microwaves within a preset microwave frequency range, which are used to heat the aerosol-generating substrate in the atomization chamber; S2: A feedback collection circuit collects a feedback signal corresponding to the microwave and sends the feedback signal to the microwave control circuit; S3: After the microwave sweep and transmission is completed, the microwave control circuit selects a microwave transmission frequency based on the feedback signal; A microwave control method comprising:

12. Steps S1 to S3 of the microwave control method are performed under preset conditions, and the preset conditions are: the microwave control circuit receives an aerosol-generating substrate loading completion command; or the microwave control circuit receives an inhalation command; or The microwave control circuit periodically executes the inhalation control at a preset interval. The microwave control method according to claim 11.

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