Electronic atomizer and method for controlling radiation thereof

Abstract

In the electronic atomizing device and radiation control method disclosed in the present invention, the electronic atomizing device includes an antenna unit capable of converting a radio frequency signal into a microwave signal and radiating it to a load medium. The radiation control method includes obtaining a load temperature of the load medium and determining a power control signal according to the load temperature; and controlling the power of the radio frequency signal input to the antenna unit according to the power control signal to control the microwave energy radiated by the antenna unit.

Description

Technology Field

[0001] The present invention relates to the field of microwave atomization, and in particular to an electronic atomization device and a method for controlling radiation thereof. Background Technology

[0002] Currently, atomizing heating technology is rapidly advancing, and as science and technology advance, new technologies such as electric resistance heating, electromagnetic heating, and microwave heating are emerging in the field of electronic atomizing heating. Meanwhile, electronic products emit electromagnetic radiation, and in particular, in the case of microwave heating atomizing products, the product emits high-frequency radiation, which can interfere with and disrupt other electronic products. Through testing of microwave heating electronic atomizing products, it was found that during the process of microwave heating the load medium, as the heating time elapses, microwave (a type of electromagnetic wave) radiation leakage occurs from the electronic atomizing product, causing the radiation spurious to increase excessively. The problem to be solved

[0003] The technical problem to be solved by the present invention focuses on the technical issue in which electronic atomizing devices existing in the prior art generate excessive high-frequency radiation spurious during the microwave heating process, and provides an electronic atomizing device and a method for controlling radiation thereof. means of solving the problem

[0004] The technical solution adopted by the present invention to solve these technical problems is as follows.

[0005] In a method for controlling radiation of an electronic atomizer, the electronic atomizer includes an antenna unit capable of radiating to a load medium while converting a radio frequency signal into a microwave signal, and

[0006] The above radiation control method obtains the load temperature of the load medium and determines a power control signal according to the load temperature;

[0007] It includes controlling the power of the radio frequency signal input to the antenna unit according to the power control signal, thereby controlling the microwave energy radiated by the antenna unit.

[0008] Preferably, the electronic atomizer further comprises a radio frequency unit capable of generating the radio frequency signal, a power amplifier that power-amplifies the radio frequency signal output by the radio frequency unit and outputs it to the antenna unit, and a voltage output unit capable of supplying power to the power amplifier;

[0009] The step of controlling the power of the radio frequency signal input to the antenna unit according to the power control signal comprises controlling the output of the radio frequency signal input to the antenna unit by adjusting the power output from the radio frequency unit according to the power control signal; and / or,

[0010] It includes controlling the power of the radio frequency signal input to the antenna unit by adjusting the power supply voltage output by the voltage output unit to the power amplifier according to the power control signal.

[0011] Preferably, the step of determining the power control signal according to the load temperature includes calculating the difference value between a preset temperature and the load temperature, determining the power control signal according to the difference value, wherein the difference value exhibits a positive correlation with the microwave energy radiated by the antenna unit under the corresponding power control signal.

[0012] The step of determining the power control signal according to the difference value includes considering a preset first power control signal as a power control signal when the difference value is greater than or equal to a first threshold.

[0013] The step of determining the power control signal according to the difference value comprises, when the difference value is smaller than the first threshold value and greater than or equal to the second threshold value, considering a preset second power control signal as a power control signal, wherein, the first threshold value is greater than the second threshold value, and the microwave energy radiated by the antenna unit under the second power control signal is smaller than the microwave energy radiated by the antenna unit under the first power control signal.

[0014] The step of determining the power control signal according to the difference value includes, when the difference value is smaller than the second threshold, considering a preset third power control signal as the power control signal, wherein the microwave energy radiated by the antenna unit under the third power control signal is smaller than the microwave energy radiated by the antenna unit under the second power control signal.

[0015] Preferably, the first threshold value is greater than or equal to 20°C, and the second threshold value is greater than 0°C and less than or equal to 10°C.

[0016] Preferably, the step of obtaining the load temperature of the load medium includes obtaining the temperature of the antenna unit from a temperature measuring assembly installed in the antenna unit, and obtaining the temperature of the load medium according to the temperature of the antenna unit.

[0017] In the electronic atomizing device further provided in the present invention, the device comprises a control assembly and an antenna unit that converts a radio frequency signal into a microwave signal and radiates it to the load medium, and when the control assembly executes a computer program, it implements the steps of the radiation control method of the electronic atomizing device described above.

[0018] Preferably, the control assembly further comprises a temperature measuring assembly installed in the antenna unit, and the control assembly is used to obtain the temperature of the antenna unit from the temperature measuring assembly and obtains the temperature of the load medium according to the temperature of the antenna unit. Effects of the invention

[0019] Through the technical solution of the present invention, a power control signal is determined according to the load temperature of the load medium, and by controlling the power of the radio frequency signal input to the antenna unit according to the power control signal, the magnitude of the microwave energy radiated by the antenna unit can be adjusted. Consequently, even if a phase change occurs in the load medium during the heating process, the electromagnetic waves radiated by the antenna unit are prevented from increasing excessively, thereby preventing leakage of radiated spurious particles. Therefore, not only can the absorption rate and atomization effect of the antenna unit be guaranteed, but interference during the use of surrounding electronic devices can also be prevented. Brief explanation of the drawing

[0020] To explain the embodiments of the present invention in more detail, the drawings necessary for describing the embodiments are briefly introduced below. In the description below, the drawings correspond only to some embodiments of the present invention, and a person skilled in the art can obtain other drawings based on the drawings below without requiring creative labor. Figure 1 is a flowchart of Example 1 showing a radiation control method of an electronic atomizing device in the present invention. FIG. 2 is a flowchart illustrating one embodiment of step S10 shown in FIG. 1. FIG. 3 is a logic structure diagram showing Example 1 of an electronic atomizing device in the present invention. Figure 4 is a curve diagram showing the relationship between the load temperature and the power of the radio frequency signal in the present invention. Specific details for implementing the invention

[0021] The following describes in detail and completely the technical method of the embodiments of the present invention by combining the drawings of the embodiments. The described embodiments are merely examples of a part of the present invention and do not constitute the entirety of the invention. All other embodiments obtained based on the embodiments of the present invention, under the premise that a person skilled in the art has not performed creative labor, fall within the scope of protection of the present invention.

[0022] First, it must be explained that electronic atomizers heat a load medium by radiating microwave energy onto it. Since this heating method involves relatively large amounts of radiated energy, the temperature of the load medium rises instantaneously, allowing for reduced energy consumption of the load medium when the user is not inhaling. However, simultaneously, when the electronic atomizer receives a heating activation command, the electrical resistance coefficient of the load medium is favorable, resulting in a relatively large amount of absorbed microwave energy. As heating time elapses, the electrical resistance coefficient of the load medium changes; this means a phase change occurs, causing self-excitation at frequencies outside the operating bandwidth. Consequently, the absorbable microwave energy decreases compared to the initial state. If heating is continued at the same power level during this time, the radiated microwave energy cannot be completely absorbed by the load medium. This leads to microwave (a type of electromagnetic wave) leakage, causing an excessive increase in radiated spurious particles, which can interfere with the use of other electronic devices.

[0023] The present invention provides a radiation control method to reduce the leakage of electromagnetic waves radiated from an electronic atomizing device, and reduces radiation spuriousness by dynamically adjusting the high-frequency radiation generated according to the characteristics of the load medium in an environment where a high-power microwave atomizing product operates.

[0024] FIG. 1 is a flowchart of Example 1 illustrating a radiation control method for an electronic atomizer in the present invention. To explain first, the electronic atomizer includes an antenna unit, and a load medium is located within the radiation range of the antenna unit. The antenna unit converts a radio frequency signal into a microwave signal and radiates it to the load medium. Therefore, the load medium can be microwave heated by radiating microwave energy to the load medium. The radiation control method of the above example comprises the step S10 of obtaining the load temperature of the load medium and determining a power control signal according to the load temperature;

[0025] It includes step S20 of controlling the power of the radio frequency signal input to the antenna unit according to the power control signal, thereby controlling the microwave energy radiated by the antenna unit.

[0026] In the technical solution of the above embodiment, a power control signal is determined according to the load temperature of the load medium, and by controlling the power of the radio frequency signal input to the antenna unit according to the power control signal, the magnitude of the microwave energy radiated by the antenna unit can be adjusted. Therefore, even if a phase change occurs in the load medium during the heating process, the electromagnetic waves radiated by the antenna unit are prevented from increasing excessively, thereby preventing leakage of radiated spurious particles. Consequently, not only can the absorption rate and atomization effect of the antenna unit be guaranteed, but interference during the use of surrounding electronic devices can also be prevented.

[0027] Furthermore, in one preferred embodiment, the load temperature of the load medium in step S10 is obtained by obtaining the temperature of the antenna unit from a temperature measuring assembly installed in the antenna unit, and obtaining the temperature of the load medium according to the temperature of the antenna unit. In this embodiment, the temperature measuring assembly may be, for example, a thermocouple, which is used to detect the temperature of the antenna unit, and since the temperature of the antenna unit and the temperature of the load medium have a positive correlation, the temperature of the load medium can be represented by the temperature of the antenna unit, so that, for example, the detected temperature of the antenna unit can be directly considered as the temperature of the load medium.

[0028] Furthermore, in one selectable embodiment, the electronic atomizer further comprises a radio frequency unit, a power amplifier, and a voltage output unit, wherein the radio frequency unit is used to generate a radio frequency signal; the power amplifier is used to power amplify the radio frequency signal output from the radio frequency unit and output it to the antenna unit; and the voltage output unit is used to supply power to the power amplifier. Step S20 controls the power of the radio frequency signal input to the antenna unit by adjusting the power output from the radio frequency unit according to the power control signal; and / or,

[0029] It includes controlling the power of the radio frequency signal input to the antenna unit by adjusting the power supply voltage output by the voltage output unit to the power amplifier according to the power control signal.

[0030] In one specific embodiment, the radio frequency unit is a power-regulating radio frequency unit, and controls the microwave energy radiated by the antenna unit by adjusting the power output from the radio frequency unit according to a power control signal. In another specific embodiment, a power amplifier is installed between the radio frequency unit and the antenna unit, and the power amplifier is a microwave amplifier tube, and since the amplification multiplier is directly proportional to the power supply voltage, the microwave energy radiated by the antenna unit is controlled by adjusting the power supply voltage output from the voltage output unit to the power amplifier according to the power control signal.

[0031] Furthermore, in one preferred embodiment, the step of determining the power control signal according to the load temperature in step S10 involves calculating a difference value between a preset temperature and the load temperature, and determining the power control signal according to the difference value, wherein the difference value exhibits a positive correlation with the microwave energy radiated by the antenna unit under the corresponding power control signal. Additionally, the preset temperature may be an optimized temperature point for microwave heating of the load medium. In this embodiment, the power control signal is determined by calculating a difference value between the preset temperature and the load temperature, and the larger the difference value, the greater the microwave energy radiated by the antenna unit under the power control signal corresponding to the difference value; conversely, the smaller the difference value, the smaller the microwave energy radiated by the antenna unit under the power control signal corresponding to the difference value.

[0032] Furthermore, in one preferred embodiment, the step of determining the power control signal according to the difference value is included as follows.

[0033] If the above difference value is greater than or equal to the first threshold, the preset first power control signal is considered as the power control signal; and / or,

[0034] If the difference value is smaller than the first threshold value and greater than or equal to the second threshold value, a preset second power control signal is considered as a power control signal, wherein the first threshold value is greater than the second threshold value, and the microwave energy radiated by the antenna unit under the second power control signal is smaller than the microwave energy radiated by the antenna unit under the first power control signal; and / or,

[0035] If the above difference value is smaller than the second threshold, a preset third power control signal is considered as a power control signal, wherein the microwave energy radiated by the antenna unit under the third power control signal is smaller than the microwave energy radiated by the antenna unit under the second power control signal.

[0036] In one specific embodiment, two threshold values, a first threshold and a second threshold, are pre-set, and the first threshold is greater than the second threshold. The two threshold values ​​can be divided into three temperature ranges: greater than or equal to the first threshold; smaller than the first threshold and greater than or equal to the second threshold; and smaller than the second threshold. Additionally, power control signals corresponding to each temperature range, namely a first power control signal, a second power control signal, and a third power control signal, are pre-set. Regarding the relationship between the three power control signals, the microwave energy radiated by the antenna unit under the first power control signal is maximum, the microwave energy radiated by the antenna unit under the second power control signal is next maximum, and the microwave energy radiated by the antenna unit under the third power control signal is minimum. The reason for this is that when the current difference value is greater than or equal to the first threshold value, the load temperature has not yet reached the preset temperature (optimal temperature point) and the electrical resistance coefficient of the load medium is still good, so the amount of microwave energy that can be absorbed is relatively large. Consequently, the power of the radio frequency signal input to the antenna unit via the first power control signal becomes maximum, and the radio frequency signal is converted into microwaves and radiated through the antenna unit; the radiated microwaves are absorbed in large quantities by the load medium and converted into heat.At this time, electromagnetic wave leakage is low and absorbed by almost all of the load medium, so the load medium can quickly reach the optimal temperature point; when the current difference value is smaller than the first threshold value and greater than or equal to the second threshold value, the electrical resistance coefficient of the load medium has already changed compared to the initial state, and the microwave energy that can be absorbed decreases, so the power of the radio frequency signal input to the antenna unit through the second power control signal is reduced, and the radio frequency signal is converted into microwaves through the antenna unit and radiated, and the radiated microwaves are absorbed by the load medium and converted into heat, and since the microwave energy radiated by the antenna unit is relatively small, it is suitable for the load medium in which a phase change has occurred, so electromagnetic wave leakage is also low, and furthermore, as the microwave energy absorbed by the load medium decreases, the temperature of the load medium approaches the optimal temperature point more closely; When the current difference value is smaller than the second threshold value, the electrical resistance coefficient of the load medium has already changed more significantly than at the initial stage, and since the absorbable microwave energy is further reduced, the power of the radio frequency signal input to the antenna unit via the third power control signal is further reduced. The radio frequency signal is converted into microwaves through the antenna unit and radiated, and the radiated microwaves are absorbed by the load medium and converted into heat. Since the microwave energy radiated by the antenna unit is relatively small and suitable for the load medium in which a phase change has occurred, electromagnetic leakage is also low. Furthermore, as the microwave energy absorbed by the load medium is further reduced, the temperature of the load medium approaches the optimal temperature point more closely.

[0037] FIG. 2 is a flowchart illustrating one embodiment of step S10 illustrated in FIG. 1, wherein in this embodiment, the first threshold value is greater than or equal to 20°C, and the second threshold value is greater than 0°C and less than or equal to 10°C, and the three temperature ranges into which these two threshold values ​​are separated are, i.e.,

[0038] The first temperature range is 0°C or higher and less than 10°C, the second temperature range is 10°C or higher and less than 20°C, and the third temperature range is greater than 20°C. Step S10 includes the following.

[0039] Step S11 obtains the current load temperature of the load medium, calculates the current difference value between a preset temperature and the current load temperature, determines a current temperature range corresponding to the current difference value as a first temperature range, a second temperature range, or a third temperature range, and if it is the first temperature range, executes Step S16; if it is the second temperature range, executes Step S14; and if it is the third temperature range, executes Step S12;

[0040] Step S12 considers the first power control signal as the current power control signal;

[0041] Step S13 obtains the current load temperature of the load medium, calculates the current difference value between a preset temperature and the current load temperature, determines a second temperature range or a third temperature range corresponding to the current difference value, and if it is the second temperature range, executes Step S14; if it is the third temperature range, executes Step S12;

[0042] Step S14 considers the second power control signal as the current power control signal, wherein the microwave energy radiated by the antenna unit under the second power control signal is smaller than the microwave energy radiated by the antenna unit under the first power control signal;

[0043] Step S15 obtains the current load temperature of the load medium, calculates the current difference value between a preset temperature and the current load temperature, determines a current temperature range corresponding to the current difference value as a first temperature range or a second temperature range, and if it is the first temperature range, executes Step S16; if it is the second temperature range, executes Step S14;

[0044] Step S16 considers the third power control signal as the current power control signal, wherein the microwave energy radiated by the antenna unit under the third power control signal is smaller than the microwave energy radiated by the antenna unit under the second power control signal, and then executes Step S13.

[0045] In this embodiment, three temperature ranges such as [0, 10], [10, 20], and [20, + ∞] are set. In actual application, since the difference between the preset temperature and the load temperature is at its maximum when heating is just starting, it should be understood that the third temperature range may be a temperature interval from 20 to any fixed temperature. Additionally, each of the three temperature ranges described above corresponds to a third power control signal (corresponding to the first temperature range (0, 10]), a second power control signal (corresponding to the second temperature range (10, 20]), and a first power control signal (corresponding to the third temperature range (20, + ∞)).

[0046] Finally, it must be further explained that since step S11 performs temperature detection, calculation, and judgment during the initial stage (e.g., the first stage) of operating the heating, there is a possibility that three judgment results exist, namely the first temperature range, the second temperature range, and the third temperature range; since step S13 performs temperature detection, calculation, and judgment after controlling using the first power control signal, there is a possibility that two judgment results exist, namely the second temperature range and the third temperature range; and since step S15 performs temperature detection, calculation, and judgment after controlling using the second power control signal, there is a possibility that only two judgment results exist, namely the first temperature range and the second temperature range.

[0047] FIG. 3 is a logic structure diagram showing Example 1 of an electronic atomizing device according to the present invention, and the electronic atomizing device of this embodiment includes an antenna unit (10), a control assembly (20), and a load medium (30), wherein the antenna unit (10) can convert a radio frequency signal into a microwave signal and radiate it to the load medium (30). The control assembly (20) can implement the steps of the radiation control method of the electronic atomizing device described above when executing a computer program.

[0048] Furthermore, as illustrated in FIG. 3, the electronic atomizer further comprises a radio frequency unit (40), a power amplifier (50), and a voltage output unit (60), wherein the radio frequency unit (40) is used to generate a radio frequency signal; the power amplifier (50) power amplifies the radio frequency signal output from the radio frequency unit (40); and the voltage output unit (60) outputs a power supply voltage to the power amplifier (50) to ensure that the power amplifier (50) operates normally.

[0049] In one specific embodiment, the voltage output unit (60) is equipped with a power management chip, and the control assembly (20) can adjust the power supply voltage output from the voltage output unit (60) by controlling the power management chip.

[0050] Furthermore, in one selectable embodiment, the electronic atomizer further comprises a temperature measuring assembly installed in an antenna unit, and a control assembly is used to obtain the temperature of the antenna unit from the temperature measuring assembly and to obtain the temperature of the load medium according to the temperature of the antenna unit. In this embodiment, the temperature measuring assembly may be, for example, a thermocouple, which is used to detect the temperature of the antenna unit, and since the temperature of the antenna unit and the temperature of the load medium have a positive correlation, the temperature of the load medium can be represented by the temperature of the antenna unit, so that, for example, the detected temperature of the antenna unit can be directly considered as the temperature of the load medium.

[0051] In one specific embodiment, when the relationship between the load temperature and the power of the radio frequency signal shown in FIG. 4 is combined, curve L1 is the load temperature curve of the load medium, and curve L2 is the power curve of the radio frequency signal input to the antenna unit. When heating is just started, that is, in the time period 0 to t1, the temperature of the load medium is relatively low and the difference value from the preset temperature is relatively large (greater than the first threshold value). At this time, if the control assembly outputs a first power control signal to microwave heat the load medium at maximum power, the temperature of the load medium rises rapidly. When the user inhales, for example in the time period t1 to t2, cold air is introduced through inhalation and the temperature of the load medium begins to drop, and the difference value between the load temperature and the preset temperature lies between the first threshold value and the second threshold value. At this time, the control assembly outputs a second power control signal to microwave heat the load medium at a power level between the maximum power and the minimum power.

[0052] When the user does not inhale, that is, between two inhalations, for example, during the time period t2 to t3, the temperature change of the load medium is relatively small and the difference value from the preset temperature is smaller than the second threshold value, at this time, the control assembly outputs a third power control signal to microwave heat the load medium at the lowest power.

[0053] The foregoing describes merely preferred embodiments of the present invention and does not limit the invention. A person skilled in the art may make various modifications and changes to the present invention. Modifications, equivalent substitutions, improvements, etc., within the spirit and principles of the present invention shall be included within the scope of the claims.

Claims

Claim 1 An electronic atomizing device and a radiation control method thereof, wherein the electronic atomizing device comprises an antenna unit capable of converting a radio frequency signal into a microwave signal and radiating it to a load medium, and the radiation control method comprises obtaining a load temperature of the load medium and determining a power control signal according to the load temperature; and controlling the power of the radio frequency signal input to the antenna unit according to the power control signal to control the microwave energy radiated by the antenna unit. Claim 2 The method of claim 1 further comprises: a radio frequency unit capable of generating the radio frequency signal; a power amplifier that power-amplifies the radio frequency signal output by the radio frequency unit and outputs it to the antenna unit; and a voltage output unit capable of supplying power to the power amplifier; wherein the step of controlling the power of the radio frequency signal input to the antenna unit according to the power control signal comprises: controlling the power of the radio frequency signal input to the antenna unit by adjusting the power output from the radio frequency unit according to the power control signal; and / or controlling the power of the radio frequency signal input to the antenna unit by adjusting the power supply voltage output from the voltage output unit to the power amplifier according to the power control signal. Claim 3 A radiation control method according to claim 1 or 2, wherein the step of determining the power control signal according to the load temperature comprises calculating a difference value between a preset temperature and the load temperature, determining the power control signal according to the difference value, wherein the difference value exhibits a positive correlation with the microwave energy radiated by the antenna unit under the corresponding power control signal. Claim 4 A radiation control method characterized in that, in paragraph 3, the step of determining the power control signal according to the difference value includes considering a preset first power control signal as a power control signal when the difference value is greater than or equal to a first threshold. Claim 5 A radiation control method according to claim 4, wherein the step of determining the power control signal according to the difference value comprises, when the difference value is smaller than the first threshold value and larger than the second threshold value, considering a preset second power control signal as the power control signal, wherein the first threshold value is greater than or equal to the second threshold value, and the microwave energy radiated by the antenna unit under the second power control signal is smaller than the microwave energy radiated by the antenna unit under the first power control signal. Claim 6 A radiation control method according to claim 5, wherein the step of determining the power control signal according to the difference value comprises, when the difference value is smaller than a second threshold, considering a preset third power control signal as a power control signal, wherein the microwave energy radiated by the antenna unit under the third power control signal is smaller than the microwave energy radiated by the antenna unit under the second power control signal. Claim 7 A radiation control method according to claim 6, characterized in that the first threshold value is greater than or equal to 20℃, and the second threshold value is greater than 0℃ and less than or equal to 10℃. Claim 8 A radiation control method according to claim 1, wherein the step of obtaining the load temperature of the load medium comprises obtaining the temperature of the antenna unit from a temperature measuring assembly installed in the antenna unit and obtaining the temperature of the load medium according to the temperature of the antenna unit. Claim 9 An electronic atomizing device comprising a control assembly and an antenna unit that converts a radio frequency signal into a microwave signal and radiates it to the load medium, wherein when the control assembly executes a computer program, the step of the radiation control method of the electronic atomizing device according to any one of claims 1 to 8 is implemented. Claim 10 An electronic atomizing device according to claim 9, further comprising a temperature measuring assembly installed in the antenna unit, wherein the control assembly is used to obtain the temperature of the antenna unit from the temperature measuring assembly and obtains the temperature of the load medium according to the temperature of the antenna unit.

Images