WO2022017418A1 - 气雾生成装置 - Google Patents

气雾生成装置 Download PDF

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Publication number
WO2022017418A1
WO2022017418A1 PCT/CN2021/107641 CN2021107641W WO2022017418A1 WO 2022017418 A1 WO2022017418 A1 WO 2022017418A1 CN 2021107641 W CN2021107641 W CN 2021107641W WO 2022017418 A1 WO2022017418 A1 WO 2022017418A1
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Prior art keywords
oscillator
voltage
aerosol
generating device
voltage value
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PCT/CN2021/107641
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French (fr)
Inventor
孙晓东
徐中立
李永海
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Shenzhen FirstUnion Technology Co Ltd
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Shenzhen FirstUnion Technology Co Ltd
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring

Definitions

  • the embodiments of the present application relate to the field of heat-not-burn smoking articles, and in particular, to an aerosol generating device.
  • Smoking articles eg, cigarettes, cigars, etc.
  • Burn tobacco during use to produce tobacco smoke.
  • Attempts have been made to replace these tobacco-burning products by making products that release compounds without burning them.
  • a heating device that releases a compound by heating, rather than burning, the material, forming an aerosol for ingestion.
  • the material may be tobacco or other non-tobacco products, which may or may not contain nicotine.
  • Patent No. 201580007754.2 proposes an induction heating device for electromagnetic induction heating special cigarette products; it uses a DC/AC inverter to convert the direct current output by the power supply into alternating current Supply to the induction coil, specifically, the induction coil and the capacitor form an LC oscillation to form an alternating current, so that the coil generates an alternating magnetic field to induce the susceptor to heat and heat the cigarette product.
  • the resistance of the induction coil will cause the LC oscillation voltage to change lag during the oscillation process, disturb the oscillation and increase the risk of loss or damage of the switch tube.
  • An object of an embodiment of the present application is to provide an aerosol generating device that can partially eliminate the problem of hysteresis of LC oscillation voltage change.
  • An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol for suction; comprising: a chamber for receiving at least a portion of the aerosol-generating article; an LC oscillator comprising: an induction coil and a capacitor connected in parallel; a transistor switch; a cell configured to provide a pulsed voltage to the LC oscillator through the transistor switch to cause the induction coil of the LC oscillator to generate a changing magnetic field; a susceptor, configured generating heat for being penetrated by the changing magnetic field, thereby heating the aerosol-generating article received in the chamber; a voltage detection unit for detecting a voltage value of the LC oscillator; a controller configured to When the voltage value detected by the voltage detection unit exceeds a preset voltage value, the transistor switch is turned off, so as to keep the voltage during the oscillation of the LC oscillator lower than the preset voltage value.
  • the above aerosol generating device keeps the oscillation process of the parallel LC oscillator below the preset voltage value, on the one hand, it can reduce the state of incomplete oscillation and low efficiency in the presence of a relatively large hysteresis voltage, Large hysteresis voltages cause thermal losses and safety issues in transistor switching.
  • it further includes: a zero-crossing detection unit for detecting whether the voltage value of the LC oscillator is 0V; the controller is further configured to control when the voltage value of the LC oscillator is 0V The transistor switch is turned on.
  • the controller has a first response speed in response to the detection result of the zero-crossing detection unit, and a second response speed in response to the detection result of the voltage detection unit; the first response speed is higher than The second response speed is fast.
  • the capacitor includes at least a first capacitor and a second capacitor both connected in parallel with the inductive coil.
  • the first capacitor and the second capacitor have equal or approximately equal capacitance values.
  • the controller controls the transistor switches to be turned on and off by means of PWM.
  • the controller is configured to adjust the pulse width of the PWM according to the operating temperature of the susceptor, thereby maintaining the operating temperature of the susceptor at a target temperature.
  • the voltage detection unit includes: a first resistor and a second resistor; wherein a first end of the first resistor is connected to the LC oscillator, and a first end of the second resistor is connected to the LC oscillator. The second end of the first resistor is connected, and the second end is grounded; and the voltage value of the LC oscillator is detected by sampling the voltage value across the second resistor.
  • the voltage detection unit further includes: a filter capacitor, connected in parallel with the second resistor, for filtering the sampling signal when sampling the voltage value across the second resistor.
  • the zero-crossing detection unit includes a zero-crossing comparator.
  • the LC oscillator is configured such that the direction of the current flowing through the inductive coil is constant during oscillation.
  • an aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol for inhalation; comprising: a chamber for receiving at least a portion of the aerosol-generating article an LC oscillator including an induction coil and a capacitor connected in parallel; a transistor switch; a magnetic field; a susceptor configured to be penetrated by the changing magnetic field to generate heat, thereby heating the aerosol-generating article received in the chamber; the LC oscillator configured to form a flow through the The current direction of the inductive coil is constant.
  • FIG. 1 is a schematic structural diagram of an aerosol generating device according to an embodiment of the present application.
  • Fig. 2 is a structural block diagram of an embodiment of the circuit in Fig. 1;
  • Figure 3 is a schematic diagram of the basic components of one embodiment of the circuit of Figure 2;
  • FIG. 4 is a schematic diagram of the voltage change during the oscillation of the parallel LC oscillator in FIG. 3 .
  • FIG. 1 The structure of the aerosol generating device proposed in an embodiment of the present application can be referred to as shown in FIG. 1 , including:
  • the inductor coil L is used to generate a changing magnetic field under a changing current
  • the susceptor 30 is inductively coupled with the inductive coil L, and is penetrated by the changing magnetic field to generate heat, thereby heating the aerosol-generating product A such as a cigarette, and then volatilizing at least one component of the aerosol-generating product A to form a suction aerosol;
  • the battery cell 10 is a rechargeable DC battery cell
  • the circuit 20 is connected to the rechargeable battery cell 10 through appropriate electrical connection, and is used to convert the DC output from the battery cell 10 into an AC with a suitable frequency and then supply it to the inductance coil L;
  • the inductor coil L may comprise a cylindrical inductor coil wound in a spiral shape, as shown in FIG. 1 .
  • the helically wound cylindrical inductor L may have a radius r in the range of about 5 mm to about 10 mm, and in particular the radius r may be about 7 mm.
  • the length of the helically wound cylindrical inductor coil L may be in the range of about 8 mm to about 14 mm, and the number of turns of the inductor coil L may be in the range of about 8 turns to 15 turns.
  • the inner volume may be in the range of about 0.15 cm3 to about 1.10 cm3.
  • the DC power supply voltage provided by the battery cell 10 is in the range of about 2.5V to about 9.0V, and the amperage of the DC current that the battery cell 10 can provide is in the range of about 2.5A to about 20A.
  • the susceptor 30 may have a length of about 12 millimeters, a width of about 4 millimeters and a thickness of about 50 microns, and may be made of grade 430 stainless steel (SS430).
  • the susceptor 30 may have a length of about 12 millimeters, a width of about 5 millimeters, and a thickness of about 50 microns, and may be made of grade 430 stainless steel (SS430).
  • the susceptor 30 can also be configured in a cylindrical shape, and its inner space is used to receive the aerosol-generating article A and heat the outer periphery of the aerosol-generating article A during use , generating aerosols for inhalation.
  • the susceptors can also be made of grade 420 stainless steel (SS420), and alloy materials containing iron and nickel, such as permalloy.
  • FIG. 2 to FIG. 3 The above structure and basic components of the circuit 20 in a preferred embodiment can be referred to as shown in FIG. 2 to FIG. 3 , including:
  • the number of capacitors connected in parallel with the inductor coil L is at least two, for example, the first capacitor C1 , the second capacitor C2 and the third capacitor C3 are included in FIG. 3 .
  • each of the smaller capacitors (such as the above first capacitor C1, second capacitor C2 and third capacitor C3) can maintain a higher resonant frequency value; then the resonant frequency value of the overall LC oscillator 24 is increased accordingly, preventing the capacitor from being inductive once the resonant frequency is exceeded during the PWM control oscillation process.
  • the capacitance values of the first capacitor C1 , the second capacitor C2 and the third capacitor C3 are equal or approximately equal.
  • the resonant frequencies are substantially equal, and the resonant frequencies between them can be substantially reduced and varied as the oscillation frequency of the LC oscillator 24 changes, respectively, compared to the case of only a single capacitor.
  • the ESR (equivalent resistance value) of may be beneficial for preventing spikes.
  • the bridge circuit 23 includes a transistor switch Q1 located between the cell 10 and the LC oscillator 24 , thereby providing the voltage of the cell 10 to the parallel LC oscillator 24 in a pulsed manner.
  • a transistor switch Q1 located between the cell 10 and the LC oscillator 24 , thereby providing the voltage of the cell 10 to the parallel LC oscillator 24 in a pulsed manner.
  • only one transistor switch Q1 is used to control the parallel LC oscillator 24.
  • the transistor switch Q1 When the transistor switch Q1 is turned on, the parallel LC oscillator 24 stores energy, and when the transistor switch Q1 is turned off, the parallel LC oscillator 24 has internal energy. wasted.
  • the current always flows through the inductor L from left to right as shown in FIG.
  • the process of replacing the flow forms an oscillating waveform with only the positive half as shown in FIG. 4 .
  • the direction of the changing current flowing through the inductance coil L is constant, and the magnitude of the current changes periodically.
  • an oscillation waveform with only the negative half of the direction opposite to that shown in FIG. 4 is formed.
  • the transistor switch Q1 may use a common MOS transistor, a field effect transistor, a triode, or the like.
  • the circuit 20 also includes:
  • the zero-crossing detection unit 25 is used to detect the timing when the oscillating voltage of the parallel LC oscillator 24 changes to 0; and then the MCU controller 21 detects that the oscillating voltage of the parallel LC oscillator 24 changes to 0 in the zero-crossing detection unit 25 and controls the transistor switch Q1 to conduct. Pass. specific,
  • the zero-crossing detection unit 25 mainly includes a zero-crossing comparator U2, and the sampling input terminal in- of the zero-crossing comparator U2 is connected to the parallel LC oscillator 24.
  • the reference input terminal is in+ is grounded through the resistor R12, so as to detect whether the voltage of the parallel LC oscillator 24 changes to zero.
  • changing the on-time or duty cycle of the transistor switch Q1 by PWM is adjusted according to the monitored operating temperature of the susceptor 30 .
  • the energy provided to the susceptor 30 is increased by changing the output pulse width of the PWM to increase the turn-on time of the transistor switch Q1 or the duty cycle to increase the energy provided to the susceptor 30 to operate the susceptor 30 .
  • the temperature can be maintained at the desired target temperature; and when the operating temperature of the susceptor 30 is monitored to be higher than the preset temperature value, the conduction time or duty cycle of the transistor switch Q1 is correspondingly reduced to reduce the energy provided to the susceptor 30 .
  • circuit 20 further includes:
  • the voltage detection unit 26 is used to detect the voltage value of the parallel LC oscillator 24;
  • the voltage detection unit 26 includes: a first resistor R5 and a second resistor R6 connected in series, and the other end of the second resistor R6 is grounded; then the MCU controller 21 samples the pair of the second resistor R6 by sampling The ground voltage can be calculated by the resistance value to obtain the real-time voltage value of the parallel LC oscillator 24 .
  • the voltage detection unit 26 includes a filter capacitor C4 connected in parallel with the second resistor R6, which is used for filtering to prevent the IO interface of the MCU controller 21 from being burned out due to excessive sampling values of the MCU controller 21.
  • the MCU controller 21 has a first response speed in response to the detection result of the zero-crossing detection unit 25, and a second response speed in response to the detection result of the voltage detection unit 26; the first response speed is faster than the second response speed. quick response. Turning on the transistor switch Q1 according to the result of the zero-crossing detection is given relatively high priority.
  • the circuit 20 also includes a resistor that provides conventional step-down or current limiting in each current path, such as resistors R1/R2. /R3/R8/R11 and so on. in,
  • Resistor R1 is used as the current limiter of the main circuit; at the same time, the comparator U2 is used as an overcurrent protection function to monitor the current of the main circuit in real time.
  • the device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each embodiment can be implemented by means of software plus a general hardware platform, and certainly can also be implemented by hardware.
  • Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and the program is During execution, it may include the processes of the embodiments of the above-mentioned methods.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM) or the like.

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Abstract

一种气雾生成装置，包括：并联LC振荡器（24）；晶体管开关（Q1）；电芯（10），通过晶体管开关（Q1）向LC振荡器（24）提供脉冲电压，以使LC振荡器（24）的电感线圈（L）产生变化的磁场；感受器（30），被变化的磁场穿透而发热加热气雾生成制品（A）；电压检测单元（26），用于检测LC振荡器（24）的电压值；控制器（21），当电压检测单元（26）检测的电压值超过预设电压值时断开晶体管开关（Q1），以保持LC振荡器（24）振荡过程中的电压低于预设电压值。该气雾生成装置，使LC振荡器（24）的振荡电压保持低于预设电压值下，一方面能减少在存在相对大的滞后电压下振荡不完全效率低的状态，另一方面防止在存在大滞后电压造成晶体管开关（Q1）热损和安全性的问题。

Description

气雾生成装置
相关申请的交叉参考
本申请要求于2020年7月22日提交中国专利局，申请号为202010709397.7，发明名称为“气雾生成装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及加热不燃烧烟具领域，尤其涉及一种气雾生成装置。
背景技术
烟制品(例如，香烟、雪茄等)在使用过程中燃烧烟草以产生烟草烟雾。人们试图通过制造在不燃烧的情况下释放化合物的产品来替代这些燃烧烟草的制品。
此类产品的示例为加热装置，其通过加热而不是燃烧材料来释放化合物，形成供吸食的气溶胶。例如，该材料可为烟草或其他非烟草产品，这些非烟草产品可包含或可不包含尼古丁。
对于以上加热装置的一个现有技术的实施例中，201580007754.2号专利提出了一种电磁感应式加热特制烟支制品的感应加热装置；其采用DC/AC逆变器将电源输出的直流转变为交流供应至感应线圈，具体是通过感应线圈与电容器组成LC振荡的方式形成交流，从而使线圈产生交变磁场诱导感受器发热加热烟支制品。而对于以上现有技术实施例的感应加热装置，在使用中感应线圈的抗性会在振荡过程中造成LC振荡电压变化滞后，干扰振荡并增加开关管的损耗或损毁风险。
发明内容
本申请一个实施例的一个目的在于提出一种能部分消除LC振荡电压变化滞后的问题的气雾生成装置。具体，
本申请一个实施例的气雾生成装置，被配置为加热气雾生成制品生成供抽吸的气溶胶；包括：腔室，用于接收所述气雾生成制品的至少一部分；LC振荡 器，包括并联的感应线圈和电容器；晶体管开关；电芯，被配置为通过所述晶体管开关向所述LC振荡器提供脉冲电压，以使所述LC振荡器的电感线圈产生变化的磁场；感受器，被配置为被所述变化的磁场穿透而发热，进而对接收于所述腔室内的气雾生成制品进行加热；电压检测单元，用于检测所述LC振荡器的电压值；控制器，被配置为当所述电压检测单元检测的电压值超过预设电压值时断开所述晶体管开关，以保持所述LC振荡器振荡过程中的电压低于预设电压值。
以上气雾生成装置，使并联LC振荡器的振荡过程保持低于预设电压值下进行，一方面能减少在存在相对大的滞后电压下振荡不完全效率低的状态，另一方面防止在存在大滞后电压造成晶体管开关热损和安全性的问题。
在优选的实施中，还包括：过零检测单元，用于检测所述LC振荡器的电压值是否为0V；所述控制器还被配置为当所述LC振荡器的电压值为0V时控制所述晶体管开关导通。
在优选的实施中，所述控制器具有响应所述过零检测单元的检测结果的第一响应速度、以及响应所述电压检测单元的检测结果的第二响应速度；所述第一响应速度比所述第二响应速度快。
在优选的实施中，所述电容器至少包括均与所述电感线圈并联的第一电容器和第二电容器。
在优选的实施中，所述第一电容器和第二电容器具有相等或大致相等的电容值。
在优选的实施中，所述控制器通过PWM方式控制所述晶体管开关导通和断开。
在优选的实施中，所述控制器被配置为根据所述感受器的操作温度调整所述PWM的脉冲宽度，进而使所述感受器的操作温度维持在目标温度。
在优选的实施中，所述电压检测单元包括：第一电阻和第二电阻；其中，所述第一电阻的第一端与所述LC振荡器连接，所述第二电阻的第一端与第一电阻的第二端连接、第二端接地；进而通过采样所述第二电阻两端的电压值检测所述LC振荡器的电压值。
在优选的实施中，所述电压检测单元还包括：滤波电容，与所述第二电阻并联，用于对采样所述第二电阻两端的电压值时的采样信号进行滤波。
在优选的实施中，所述过零检测单元包括过零比较器。
在优选的实施中，所述LC振荡器被配置为在振荡过程中形成流过所述电感线圈的电流方向是恒定的。
本申请的又一个实施例还提出一种气雾生成装置，被配置为加热气雾生成制品以生成供抽吸的气溶胶；包括：腔室，用于接收所述气雾生成制品的至少一部分；LC振荡器，包括并联的感应线圈和电容器；晶体管开关；电芯，被配置为通过所述晶体管开关向所述LC振荡器提供脉冲电压，以使所述LC振荡器的电感线圈产生变化的磁场；感受器，被配置为被所述变化的磁场穿透而发热，进而对接收于所述腔室内的气雾生成制品进行加热；所述LC振荡器被配置为在振荡过程中形成流过所述电感线圈的电流方向是恒定的。采用以上实施例的气雾生成装置，在振荡过程中流过电感线圈的电流方向恒定、电流大小呈周期性变化，形成仅有正半部分或者负半部分的振荡波形。
附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是本申请一实施例提供的气雾生成装置的结构示意图；
图2是图1中电路的一个实施例的结构框图；
图3是图2中电路的一个实施例的基本组件的示意图；
图4是图3中并联LC振荡器振荡过程中电压变化的示意图。
具体实施方式
为了便于理解本申请，下面结合附图和具体实施方式，对本申请进行更详细的说明。
本申请一个实施例提出的气雾生成装置，其构造可以参见图1所示，包括：
腔室，气雾生成制品A可移除地接收在腔室内；
电感线圈L，用于在变化的电流下产生变化磁场；
感受器30，与电感线圈L感应耦合，并被变化磁场穿透而发热，进而对气雾生成制品A例如烟支进行加热，进而使气雾生成制品A的至少一种成分挥发，形成供抽吸的气溶胶；
电芯10，为可充电的直流电芯；
电路20，通过适当的电连接到可充电的电芯10，用于从将电芯10输出的直流，转变成具有适合频率的交流再供应到电感线圈L；
根据产品使用中的设置，电感线圈L可以包括绕成螺旋状的圆柱形电感器线圈，如图1中所示。绕成螺旋状的圆柱形电感线圈L可以具有范围在大约5mm到大约10mm内的半径r，并特别地半径r可以大约为7mm。绕成螺旋状的圆柱形电感线圈L的长度可以在大约8mm到大约14mm的范围内，电感线圈L的匝数大约8匝到15匝的范围内。相应地，内体积可能在大约0.15cm3至大约1.10cm3的范围内。
在一个优选的实施例中，电芯10提供的直流供电电压在约2.5V至约9.0V的范围内，电芯10可提供的直流电流的安培数在约2.5A至约20A的范围内。
在一个优选的实施例中，感受器30可以具有大约12毫米的长度，大约4毫米的宽度和大约50微米的厚度，并且可以由等级430的不锈钢(SS430)制成。作为替代性实施例，感受器30可以具有大约12毫米的长度，大约5毫米的宽度和大约50微米的厚度，并且可以由等级430的不锈钢(SS430)制成。在又一个优选的实施例中，感受器30还可以被构造成圆筒状的形状，在使用时其内部空间用于接收气雾生成制品A，并通过对气雾生成制品A的外周加热的方式，生成供吸食的气溶胶。这些感受器还可以由等级420的不锈钢(SS420)、以及含有铁镍的合金材料(比如坡莫合金)制成。
以上由电路20在一个优选的实施方式中的结构和基本组件可以参见图2至图3所示，包括：
并联LC振荡器24，具体是由电容与电感线圈L并联组成的，进而在对其提 供脉冲电压时形成振荡产生供应到电感线圈L的变化的电流，从而产生变化的磁场诱导感受器30发热。
进一步在实施中，并联LC振荡器24是通过PWM调制器22采用PWM(脉冲宽度调制)方式控制振荡的。通过PWM调制的方式改变通过晶体管开关Q1提供的脉冲电压的占空比，进而可以改变电芯10输出的功率。
在图3所示的优选实施中，与电感线圈L并联的电容的数量采用了至少两个，例如在图3中包括有第一电容C1、第二电容C2和第三电容C3。通过以上多个较小的电容替换原本所需相对大的电容，则每一个较小的电容(例如以上第一电容C1、第二电容C2和第三电容C3)都能保持更高的谐振频率值；则整体LC振荡器24的谐振频率值相应提升，阻止通过PWM控制振荡过程中一旦超过谐振频率电容将表现成电感性。
进一步在图3所示的优选实施中，第一电容C1、第二电容C2和第三电容C3的电容值是相等或者大致相等的。通过将至少两个电容的电容值设定为相当时谐振频率是基本相等的，并且各自之间可以随着LC振荡器24的振荡频率的变化，相应呈现出比仅单个电容时大幅降低并变化的ESR(等效电阻值)，具体是当低频时ESR呈相对高的表现、高频时ESR呈相对低的表现，对于防止尖峰脉冲可能是有利的。
在图3的优选实施中，桥电路23包括晶体管开关Q1，位于电芯10与LC振荡器24之间，进而将电芯10的电压以脉冲的方式提供给并联LC振荡器24。进一步在图3中仅通过一个晶体管开关Q1来控制并联LC振荡器24，则当晶体管开关Q1导通时并联LC振荡器24储能，而当晶体管开关Q1断开后并联LC振荡器24内部能量耗损。同时，采用以上控制的并联LC振荡器24在振荡的过程中，电流始终是沿图3中从左向右流过电感线圈L，不存在传统的半桥或全桥振荡中的正负向交替换流的过程，进而形成如图4中所示的仅有正半部分的振荡波形。则在振荡过程中，流过电感线圈L的变化电流的方向是恒定的，电流大小是成周期性变化的。或者在其他的变化实施中，通过改变电芯10和晶体管开关Q1的位置改变流经电感线圈L的电流方向，形成与图4的方向相反的仅有负半部分的振荡波形。
在可选的实施中，晶体管开关Q1可以采用通常的MOS管、场效应晶体管、 三极管等。
进一步在优选的实施中，电路20还包括：
过零检测单元25，用于检测并联LC振荡器24振荡电压变化为0的时机；进而MCU控制器21在过零检测单元25检测到并联LC振荡器24振荡电压变化为0控制晶体管开关Q1导通。具体，
在实施中，当并联LC振荡器24振荡电压变化为0时，MCU控制器21根据所需输出的目标功率控制PWM调制器22按照所需的占空比驱动晶体管开关Q1按照对应比的导通时间导通，以对并联LC振荡器24储能，并在达到导通时间之后关闭晶体管开关Q1使并联LC振荡器24内部消耗所存储的能量。
具体在图3所示的优选实施中，过零检测单元25主要包括过零比较器U2，过零比较器U2的采样输入端in-与并联LC振荡器24连接，在比较运算中基准输入端in+通过电阻R12接地，从而用于检测并联LC振荡器24的电压是否变化至0。
进一步以上实施中，通过PWM方式改变晶体管开关Q1的导通的时间，使并联LC振荡器24的振荡的半波周期和相位周期是变化的。例如，图4中所示的振荡阶段S1的周期T＝t1和振荡阶段S2的周期T＝t3-t2是不同的。同样，导通时间的变化导致电容的充电时间是变化的，则振荡过程中电压振幅即图中每个振荡周期的最高电压相应也是不同的。
在又一个实施例中，通过PWM方式改变晶体管开关Q1的导通的时间或占空比，是根据监测的感受器30的操作温度进行调节的。当监测到感受器30的操作温度低于预设目标温度值时，通过改变PWM的输出脉冲宽度提升晶体管开关Q1的导通的时间或占空比提升提供给感受器30的能量，使感受器30的操作温度能够维持在所需的目标温度；而当监测到感受器30的操作温度高于预设温度值时，则相应降低晶体管开关Q1的导通的时间或占空比降低提供给感受器30的能量。
在又一个可选的实施中，电路20还包括有：
电压检测单元26，用于检测并联LC振荡器24的电压值；
MCU控制器21则对应当电压检测单元26检测的电压值超过预设电压时，控制晶体管开关Q1断开。进而使并联LC振荡器24在低于预设的电压下振荡，一方面能减少在存在相对大的滞后电压下振荡不完全效率低的状态，另一方面防止在存在大滞后电压造成晶体管开关Q1热损和安全性的问题。
在图3所示的优选实施中，电压检测单元26包括：串联的第一电阻R5和第二电阻R6，第二电阻R6的另一端接地；则MCU控制器21通过采样第二电阻R6的对地电压即可通过阻值计算获得并联LC振荡器24的实时电压值。同时，电压检测单元26包括有与第二电阻R6并联的滤波电容C4，作为滤波使用防止MCU控制器21采样值过高烧坏MCU控制器21的IO接口。
在更加优选的实施中，MCU控制器21具有响应过零检测单元25的检测结果的第一响应速度，以及响应电压检测单元26的检测结果的第二响应速度；第一响应速度要比第二响应速度快。使根据过零检测的结果使晶体管开关Q1的导通执行具有相对高的优先级。
进一步为了保证各器件在适合的安全电压或电流下工作，图3所示的优选实施中，电路20还包括有在各电流路径中提供常规降压或限流作用的电阻，例如电阻R1/R2/R3/R8/R11等等。其中，
电阻R1作为主电路的限流；同时比较器U2作为过流保护功能使用，实时监测主电路的电流。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
通过以上的实施方式的描述，本领域普通技术人员可以清楚地了解到各实施方式可借助软件加通用硬件平台的方式来实现，当然也可以通过硬件。本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存 储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory,ROM)或随机存储记忆体(Random Access Memory,RAM)等。
需要说明的是，本申请的说明书及其附图中给出了本申请的较佳的实施例，但是，本申请可以通过许多不同的形式来实现，并不限于本说明书所描述的实施例，这些实施例不作为对本申请内容的额外限制，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。并且，上述各技术特征继续相互组合，形成未在上面列举的各种实施例，均视为本申请说明书记载的范围；进一步地，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本申请所附权利要求的保护范围。

Claims (10)

  1. 一种气雾生成装置，被配置为加热气雾生成制品以生成供抽吸的气溶胶；其特征在于，包括：
    腔室，用于接收所述气雾生成制品的至少一部分；
    LC振荡器，包括并联的感应线圈和电容器；
    晶体管开关；
    电芯，被配置为通过所述晶体管开关向所述LC振荡器提供脉冲电压，以使所述LC振荡器的电感线圈产生变化的磁场；
    感受器，被配置为被所述变化的磁场穿透而发热，进而对接收于所述腔室内的气雾生成制品进行加热；
    电压检测单元，用于检测所述LC振荡器的电压值；
    控制器，被配置为当所述电压检测单元检测的电压值超过预设电压值时断开所述晶体管开关，以保持所述LC振荡器振荡过程中的电压低于预设电压值。
  2. 如权利要求1所述的气雾生成装置，其特征在于，还包括：
    过零检测单元，用于检测所述LC振荡器的电压值是否为零；
    所述控制器还被配置为当所述LC振荡器的电压值为零时控制所述晶体管开关导通。
  3. 如权利要求2所述的气雾生成装置，其特征在于，所述控制器具有响应所述过零检测单元的检测结果的第一响应速度、以及响应所述电压检测单元的检测结果的第二响应速度；所述第一响应速度比所述第二响应速度快。
  4. 如权利要求1至3任一项所述的气雾生成装置，其特征在于，所述电容器至少包括均与所述电感线圈并联的第一电容器和第二电容器。
  5. 如权利要求4所述的气雾生成装置，其特征在于，所述第一电容器和第二电容器具有相等或大致相等的电容值。
  6. 如权利要求1至5任一项所述的气雾生成装置，其特征在于，所述LC振荡器被配置为在振荡过程中形成流过所述电感线圈的电流方向是恒定的。
  7. 如权利要求1至6任一项所述的气雾生成装置，其特征在于，所述控制器通过PWM方式控制所述晶体管开关导通和断开。
  8. 如权利要求7所述的气雾生成装置，其特征在于，所述控制器被配置为根据所述感受器的操作温度调整所述PWM的脉冲宽度，进而使所述感受器的操作温度维持在目标温度。
  9. 如权利要求1至8任一项所述的气雾生成装置，其特征在于，所述电压检测单元包括：
    第一电阻和第二电阻；其中，
    所述第一电阻的第一端与所述LC振荡器连接，所述第二电阻的第一端与第一电阻的第二端连接、第二端接地；进而通过采样所述第二电阻两端的电压值检测所述LC振荡器的电压值；
    滤波电容，与所述第二电阻并联，用于对采样所述第二电阻两端的电压值时的采样信号进行滤波。
  10. 如权利要求2或3所述的气雾生成装置，其特征在于，所述过零检测单元包括过零比较器。
PCT/CN2021/107641 2020-07-22 2021-07-21 气雾生成装置 Ceased WO2022017418A1 (zh)

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