An aerosol-generating device

Abstract

The utility model discloses an aerosol generating device, and the device includes power supply unit, resonance unit, inverter unit and controller. Resonance unit includes capacitive component and inductor, and capacitive component includes a plurality of capacitor branch, and each capacitor branch includes at least one resonance capacitor and first switching device. Inverter unit is coupled with power supply unit, and inverter unit is used to produce alternating current to make inductor produce changing magnetic field. Controller is connected with first switching device in each capacitor branch respectively, and is configured to be able to control the on-off of first switching device, realizes the adjustment of the resonant frequency of resonance unit, makes it adapt to different characteristics inductor, thereby ensures the inductive heating effect of inductor, improves the use experience of user.

Description

Technical Field

[0001] This utility model relates to the field of aerosol generation technology, and in particular to an aerosol generation device. Background Technology

[0002] Currently, in aerosol generating devices that use electromagnetic heating, the resonant frequency of the resonant unit is often a fixed value, which cannot be adaptively adjusted during use.

[0003] In practical use, users often choose different aerosol generators or atomizers (also known as cartridges, which contain sensors and a liquid matrix) based on their needs. The materials of the conductive objects involved in electromagnetic heating differ among different aerosol generators or atomizers. Existing aerosol generators with fixed resonant frequencies cannot actively adapt to different conductive materials, resulting in varying heating effects when heating different aerosol generators or atomizers, thus impacting the user experience. Utility Model Content

[0004] This invention provides an aerosol generating device that adaptively adjusts the resonant frequency of the resonant unit, enabling it to adapt to conductive objects of different materials, thus greatly improving the user experience.

[0005] According to one aspect of the present invention, an aerosol generating device is provided, the aerosol generating device comprising a power supply unit, a resonant unit, an inverter unit and a controller;

[0006] The resonant unit includes a capacitive component and an inductor; the capacitive component includes multiple capacitor branches, and each capacitive capacitor branch includes at least one resonant capacitor and a first switching device.

[0007] The inverter unit is coupled to the power supply unit, and the inverter unit is used to generate alternating current;

[0008] The controller is connected to a first switching device in the capacitor branch, and the controller is configured to control the on / off state of the first switching device.

[0009] Optionally, the capacitive component is connected in series with the sensor.

[0010] Optionally, the capacitive component is connected in parallel with the sensor.

[0011] Optionally, each of the capacitor branches includes multiple resonant capacitors, and the combined circuit formed by connecting the multiple resonant capacitors in the capacitor branch in series, parallel, or in a series-parallel combination is connected in series with the corresponding first switching device.

[0012] Optionally, the total capacitance value of each capacitor branch in the capacitive component is equal.

[0013] Optionally, the total capacitance values ​​of each capacitor branch in the capacitive component are not all equal.

[0014] Optionally, the total capacitance value of each capacitor branch in the capacitive component is set in a gradient.

[0015] Optionally, the aerosol generating device includes a chamber for removably housing the sensor and its corresponding aerosol generating matrix.

[0016] Optionally, the first switching device includes a thyristor and / or a relay.

[0017] Optionally, the inverter unit includes two differentially configured second switching devices;

[0018] One end of the second switching device is connected to the first end of the resonant unit and the positive terminal of the power supply unit, respectively, and the other end is connected to the ground terminal;

[0019] The other second switching device has one end connected to the second terminal of the resonant unit and the positive terminal of the power supply unit, and the other end connected to the ground terminal.

[0020] The aerosol generating device provided in this embodiment includes a power supply unit, a resonant unit, an inverter unit, and a controller. The resonant unit includes a capacitive component and an inductor; the capacitive component includes multiple capacitor branches, each including at least one resonant capacitor and a first switching device. The inverter unit is coupled to the power supply unit and is used to generate alternating current. The controller is connected to the first switching device in each capacitor branch and is configured to control the on / off state of the first switching device, thereby adjusting the resonant frequency of the resonant unit to adapt to inductors with different characteristics, ensuring the inductive heating effect of the inductor and improving the user experience.

[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the heating principle of an aerosol generating device provided in an embodiment of this utility model;

[0024] Figure 2 A schematic diagram illustrating the principle of thermal energy generation in an aerosol generating device provided in this embodiment of the present invention;

[0025] Figure 3 A schematic diagram of an aerosol generating device provided in an embodiment of this utility model;

[0026] Figure 4 A schematic diagram of another aerosol generating device provided in an embodiment of this utility model;

[0027] Figure 5 A circuit diagram of an aerosol generating device provided for an embodiment of this utility model;

[0028] Figure 6 A circuit diagram of the resonant unit and controller in another aerosol generating device provided for an embodiment of this utility model;

[0029] Figure 7 A circuit diagram of another aerosol generating device provided for an embodiment of this utility model;

[0030] Figure 8 A circuit diagram of another aerosol generating device provided for an embodiment of this utility model;

[0031] Figure 9 A circuit diagram of another aerosol generating device provided for an embodiment of this utility model;

[0032] Figure 10 A circuit diagram of another aerosol generating device provided in an embodiment of this utility model. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] To address the problems mentioned in the background art, this utility model provides an aerosol generating device. Before introducing the aerosol generating device proposed in this utility model, its heating principle will be briefly described first. Figure 1 This is a schematic diagram of the heating principle of an aerosol generating device provided in an embodiment of the present invention, with reference to... Figure 1 According to Faraday's principle of electromagnetic induction, an alternating electric field will generate an alternating magnetic field in the space around the circuit. Providing a current with varying frequency to an inductor (such as an induction coil) will generate an alternating magnetic field around the inductor. If a conductive object is placed within the alternating magnetic field established by the inductor, due to the cutting of the magnetic field lines by the conductive object (also called a sensor in aerosol generating devices), induced currents, i.e., eddy currents, will be generated at different depths of the conductive object. Due to the impedance characteristics and the flow of eddy currents on the heated object, the heated object will generate heat, causing its temperature to rise, thus achieving the purpose of heating.

[0036] Based on the aforementioned heating principle, the aerosol generating apparatus proposed in this application will be described below through examples. Figure 2 This is a schematic diagram illustrating the principle of heat generation in an aerosol generating device according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of another aerosol generating device provided in an embodiment of the present invention, combined with... Figure 2 , Figure 3 and Figure 4 The aerosol generating device 100 is used to heat the aerosol generating matrix to generate aerosols.

[0037] The aerosol generating device 100 may be provided with a chamber 101, which can removably accommodate the sensor and the aerosol generating matrix.

[0038] In some embodiments, combined with Figure 2 and Figure 3 The sensor and aerosol generating matrix are integrated into the aerosol generating article 102, which can be, for example, a cigarette. The aerosol generating article 102 is removably connected to the aerosol generating device 100, meaning that the aerosol generating article 102 can be inserted into the chamber 101. When the aerosol generating article 102 is correctly inserted into the chamber 101, the aerosol generating device 100 is in a fully integrated and usable state, and can generate aerosols according to the user's operation for the user to inhale.

[0039] The aerosol generating matrix in the aerosol generating article 102 is preferably a tobacco-containing material that releases volatile compounds from the aerosol generating matrix upon heating; alternatively, it may be a non-tobacco material such as a pharmaceutical ingredient suitable for electric heating and smoke generation after heating. The aerosol generating matrix may be a solid matrix, which may include one or more of the following: vanilla leaves, tobacco leaves, homogenized tobacco, expanded tobacco, powders, granules, fragments, strips, or sheets; or, the solid matrix may contain additional tobacco or non-tobacco volatile aroma compounds to be released when the matrix is ​​heated.

[0040] The sensor 103 disposed in the aerosol generating article 102 is in thermal contact with the aerosol generating matrix. When the aerosol generating article 102 is received or inserted into the chamber 101 of the aerosol generating device 100, the sensor 103 can be inductively coupled with the sensor 104, and is heated by the penetration of the changing magnetic field, thereby heating the aerosol generating matrix, causing at least one component in the aerosol generating matrix to volatilize and form an aerosol for inhalation.

[0041] In other embodiments, combined with Figure 2 and Figure 4 The sensor 103 and the aerosol generating matrix are integrated into the atomizer or cartridge 114. The aerosol generating matrix in the atomizer or cartridge 114 is preferably a liquid matrix such as e-liquid or e-sodium. The liquid matrix may include at least one of propylene glycol, glycerin, etc., and may contain at least one of nicotine, volatile aromatic substances, and medicinal substances. The sensor 103 is in contact with the aerosol generating matrix, and the atomizer or cartridge 114 can be removably connected to or installed in the chamber 101 of the aerosol generating device 100. The user can replace the atomizer or cartridge 114 assembled in the aerosol generating device 100 as needed. The assembled aerosol generating device 100 forms a complete combined usage state, with the sensor 103 and sensor 104 in the atomizer or cartridge 114 correspondingly coupled to heat the aerosol generating matrix in the atomizer or cartridge 114, generating an aerosol for the user to inhale.

[0042] Continue to combine Figure 2 , Figure 3 and Figure 4 The sensor 103 can be configured in different shapes and positions depending on the properties of the aerosol generating matrix. For example, when the aerosol generating matrix is ​​liquid, the sensor 103 can be configured as a circumferentially closed tubular or mesh-like structure. The sensor 103 is connected to a liquid guiding element, thereby obtaining and heating the liquid aerosol generating matrix from the liquid storage chamber. When the aerosol generating matrix is ​​solid, the sensor 103 can be configured as granular, needle-shaped, strip-shaped, or leaf-shaped, arranged approximately longitudinally within the solid aerosol generating matrix, for example, approximately parallel to the longitudinal direction of the solid aerosol generating matrix. Preferably, this elongated sensor 103 can be located at the radial center of the solid aerosol generating matrix and extend along the longitudinal axis of the chamber 101.

[0043] The receptor 103 can be made of any material capable of being inductively heated to a temperature sufficient to cause the aerosol-generating matrix to generate aerosols. Preferably, the receptor 103 comprises a metal or carbon. Preferably, the receptor 103 may comprise a ferromagnetic material, such as ferrite, ferromagnetic steel, or stainless steel. A suitable receptor 103 may also be aluminum or may include aluminum. Preferably, the receptor 103 may be made of 400 series stainless steel, such as grade 410, 420, or 430 stainless steel.

[0044] Figure 5 This is a circuit diagram of an aerosol generating device provided in an embodiment of the present invention. Figure 6 A circuit diagram of the resonant unit and controller in another aerosol generating device provided in this embodiment of the present invention, combined with... Figure 3 , Figure 4 , Figure 5 and Figure 6 The aerosol generating device 100 includes a power supply unit VDD, a resonant unit 106, an inverter unit 107, and a controller 108. Figure 3 and Figure 4The circuit components in the inverter unit 107, controller 108, and resonant unit 106, except for the sensor 104, can be integrated on the circuit board 105. The resonant unit 106 includes a capacitive component 109 and a sensor 104; the capacitive component 109 includes multiple parallel capacitor branches 110, and is configured to switch the capacitor branches 110 participating in the resonance; the sensor 104 is electromagnetically coupled to the sensor 103, and is configured to provide an induced current to the sensor 103 based on the principle of electromagnetic induction, so that the sensor 103 heats the aerosol generation matrix. The inverter unit 107 is coupled to the power supply unit VDD, and is used to generate alternating current based on the power supply unit VDD to make the sensor 104 generate a changing magnetic field, thereby causing the sensor 103 to generate heat in the changing magnetic field and heat the aerosol generation product 102. The controller 108 is connected to the first switching device 112 in the capacitor branch 110. The controller 108 is configured to control the on / off state of the first switching device 112 so that at least one capacitor branch 110 forms a path with the sensor 1047, thereby adjusting the resonant frequency of the resonant unit 106.

[0045] Specifically, the power supply unit VDD is a DC power supply component of the aerosol generating device 100, which can provide DC power to the electrical devices on the aerosol generating device 100. For example, the power supply unit VDD may include at least one of a rechargeable energy storage cell and a replaceable disposable dry battery pack.

[0046] The resonant unit 106 is an oscillating electrical signal generation circuit for the sensor 104. It provides an oscillating current to the sensor 104, causing the sensor 104 to generate an alternating magnetic field that heats the sensor 103. The resonant unit 106 includes a capacitive component 109 and an inductive component. The inductive component includes the sensor 104; exemplarily, the sensor 104 can be configured as an induction coil wound around the side wall of the chamber 101. The capacitive component 109 includes multiple parallel capacitor branches 110. The capacitive component 109 and the inductive component can be connected in series or in parallel. Figure 5 An exemplary case is shown where the two are connected in parallel, with the two ends of the sensor 104 connected to the positive terminal of the power supply unit VDD, and the capacitive component 109 connected in parallel with the sensor 104. Figure 6 An exemplary case is shown where the two are connected in series. The two ends of the combined circuit formed by the series connection of the sensor 104 and the capacitive component 109 are respectively connected to the positive terminal of the power supply unit VDD.

[0047] In an LC series or parallel circuit, the resonant frequency is calculated using the formula f = 1 / (2π√LC), where L is the inductance value in Henry (H) and C is the capacitance value in Farad (F). This formula shows that, with the parameters of the inductor 104 fixed, the resonant frequency range of the resonant unit 106 can be widened by changing the capacitance value of its parallel or series capacitors. Each capacitor branch 110 may include at least one resonant capacitor 113 and a first switching device 112, with the resonant capacitor 113 connected in series with the first switching device 112. The first switching device 112 can be a normally off device, which can be turned on according to the application of a control signal. The total capacitance of the capacitive component 109 connected to the circuit will change according to the conduction status of each first switching device 112, thereby realizing the adjustment of the resonant unit 106 corresponding to the preset resonant frequency range. For example, when a lower resonant frequency is required, the first switching device 112 of the capacitor branch 110 with a larger capacitance value in the capacitive component 109 can be turned on, while when a higher resonant frequency is required, the first switching device 112 of the capacitor branch 110 with a smaller capacitance value in the capacitive component 109 can be turned on.

[0048] Inverter unit 107 is a circuit component that inverts the power supply flowing through resonant unit 106. It is coupled to power supply unit VDD and can generate AC power based on DC power supplied by power supply unit VDD and provide it to resonant unit 106. For example, inverter unit 107 can adopt a half-bridge structure circuit or a full-bridge structure circuit.

[0049] The controller 108 is the control center of the resonant unit 106. Exemplarily, the controller 108 may include a microcontroller chip, control circuit, or single-chip microcomputer, or other devices capable of signal analysis, signal processing, and switching control. The controller 108 can be connected to the control terminals of the first switching devices 112 on each capacitor branch 110. The controller 108 is configured to control the on / off state of each first switching device 112 to switch the capacitor branches 110 participating in the resonance, so that at least one capacitor branch 110 forms a loop with the sensor 104. In some embodiments, the controller 108 can also serve as the control center of the inverter unit 107, controlling the frequency of the alternating current generated by the inverter unit 107.

[0050] For example, after each replacement of the sensor 103 and its corresponding aerosol generating matrix in the aerosol generating device 100, the controller 108 can detect the properties of the newly replaced sensor 103. For example, the properties of the sensor 103 may include at least one of the material, size, and shape of the sensor 103. Furthermore, the controller 108 can adjust the state of each of the first switching devices 112 according to the properties of the newly replaced sensor 103, so as to adjust the resonant frequency of the resonant unit 106 to a value corresponding to the sensor 103. Furthermore, when the controller 108 detects a user's suction action, it can adjust the operating state of the inverter unit 107 to generate an alternating current in the sensor 104, thereby achieving precise adaptive heating of the aerosol generating matrix by the sensor 103.

[0051] The aerosol generating device provided in this embodiment includes a power supply unit, a resonant unit, an inverter unit, and a controller. The resonant unit includes a capacitive component and an inductor; the capacitive component includes multiple capacitor branches, each of which includes at least one resonant capacitor and a first switching device. The inverter unit is coupled to the power supply unit and is used to generate alternating current. The controller is connected to the first switching device in each capacitor branch and is configured to control the on / off state of the first switching device, thereby adjusting the resonant frequency of the resonant unit to adapt to inductors with different characteristics, ensuring the inductive heating effect of the inductor and improving the user experience.

[0052] Optionally, based on the foregoing embodiments, further combinations are made... Figure 5 and Figure 6 In the capacitive component 109, the capacitance values ​​of each capacitor branch 110 are the same.

[0053] Specifically, the controller 108 can control the switching of the first switching device 112 on each capacitor branch 110. When the capacitance values ​​of each capacitor branch 110 are equal, the controller 108 can adjust the total capacitance value of the capacitive component 109 connected to the line by controlling the number of capacitor branches 110 connected to the line.

[0054] Optionally, based on the foregoing embodiments, further combinations are made... Figure 5 and Figure 6 In the capacitive component 109, the capacitance values ​​of each capacitor branch 110 are not all the same.

[0055] Specifically, some capacitor branches 110 in the capacitive assembly 109 have capacitance values ​​that are equal to but not equal to the capacitance values ​​of other capacitor branches 110, or the capacitance values ​​of all capacitor branches 110 in the capacitive assembly 109 are not equal. The controller 108 can control the on / off state of the first switching device 112 on each capacitor branch 110. When the capacitance values ​​of each capacitor branch 110 are not all equal, the controller 108 can adjust the total capacitance value of the capacitive assembly 109 connected to the line by controlling the number of capacitor branches 110 connected to the line, and can also adjust the total capacitance value of the capacitive assembly 109 connected to the line by switching between different capacitor branches 110 connected to the line, thereby achieving a more precise adjustment of the resonant frequency.

[0056] Optionally, based on the foregoing embodiments, further combinations are made... Figure 5 and Figure 6 In the capacitive component 109, the capacitance values ​​of each capacitor branch 110 are different and are set in a gradient.

[0057] For example, the capacitance values ​​of capacitor branches 110 can differ by 1F sequentially. The controller 108 can control the switching of the first switching device 112 on each capacitor branch 110. When the capacitance values ​​of the various capacitor branches 110 are not all equal, the controller 108 can adjust the total capacitance value of the capacitive component 109 connected to the line by controlling the number of capacitor branches 110 connected to the line, and also by switching between different capacitor branches 110 connected to the line. Gradient settings of the capacitance values ​​of each capacitor branch 110 can achieve further precise adjustment of the resonant frequency.

[0058] Optionally, Figure 7 This is a circuit diagram of another aerosol generating device provided in an embodiment of the present invention. Based on the foregoing embodiments, refer to... Figure 7 The capacitor branch 110 may include multiple resonant capacitors 113. The multiple resonant capacitors 113 in the capacitor branch 110 can be connected in series, in parallel, or in a series-parallel combination to form a combined circuit, which is connected in series with the corresponding first switching device 112. Figure 6 The example shown is only exemplarily illustrated in the case where each capacitor branch 110 contains multiple resonant capacitors 113 and the multiple resonant capacitors 113 are connected in series. In other embodiments, the number of resonant capacitors 113 contained in different capacitor branches 110 and the connection relationship between the multiple resonant capacitors 113 in different capacitor branches 110 may be different.

[0059] Specifically, by setting different numbers, capacitance values, and connection relationships of resonant capacitors 113, the total capacitance value of multiple capacitor branches 110 can be different, thereby widening the adjustable range of the resonant frequency of the resonant unit 110. In some embodiments, the capacitor branch 110 may also include a switching device corresponding one-to-one with the resonant capacitor 113. The control terminal of the switching device is connected to a controller, and its switching is controlled by the controller. The switching device can be connected in series or in parallel with its corresponding resonant capacitor, so that the switching device can be configured to control whether its corresponding resonant capacitor 113 is connected between the two ends of the capacitor branch 110, thereby making the total capacitance value of a single capacitor branch 110 adjustable, further widening the adjustable range of the resonant frequency of the resonant unit 110.

[0060] Optionally, Figure 8 This is a circuit diagram of another aerosol generating device provided in an embodiment of the present invention. Based on the foregoing embodiments, refer to... Figure 8 The inverter unit 107 may include two second switching devices 111 with a differential structure. The second switching devices 111 can cause the resonant unit 106 to resonate by alternating on and off switching. For example, the second switching devices 111 may include field-effect transistors, and the two field-effect transistors are configured differentially. In the inverter unit 107, one end of one second switching device 111 is connected to the first terminal of the resonant unit 106 and the positive terminal of the power supply unit VDD, and the other end is connected to the ground terminal GND; one end of the other second switching device 111 is connected to the second terminal of the resonant unit 106 and the positive terminal of the power supply unit VDD, and the other end is connected to the ground terminal GND. By alternating on and off switching of the two second switching devices 111, an alternating current can be driven to flow through the sensor 104 of the resonant unit 106, causing the sensor 104 to generate a changing magnetic field, thereby driving the sensor 103 to heat the aerosol generating matrix to generate aerosol. It is important to note that using two switching devices with a differential structure is not the only implementation of the inverter unit 107. In other embodiments, the inverter unit 107 can also use a half-bridge or full-bridge circuit to invert the DC power from the power supply unit VDD to supply AC power to the resonant unit 106. This will not be elaborated further here.

[0061] For example, after each replacement of the sensor 103 and its corresponding aerosol generating matrix in the aerosol generating device 100, the controller 108 can detect the properties of the newly replaced sensor 103. For example, the properties of the sensor 103 may include at least one of the material, size, and shape of the sensor 103. Then, the controller 108 can adjust the state of each of the first switching devices 112 according to the properties of the newly replaced sensor 103, so as to adjust the resonant frequency of the resonant unit 106 to a value corresponding to the sensor 103. Furthermore, when the controller 108 detects a user's suction action, it can control the two second switching devices 111 in the inverter unit 107 to alternately turn on and off, generating an alternating current in the sensor 104, thereby achieving precise adaptive heating of the aerosol generating matrix by the sensor 103.

[0062] Optionally, Figure 9 This is a circuit diagram of another aerosol generating device provided in an embodiment of the present invention. Figure 10 This is a circuit diagram of another aerosol generating device provided in an embodiment of the present invention. Based on the aforementioned embodiments, and combined with... Figure 9 and Figure 10 The second switching device 111 includes a field-effect transistor. The first switching device 112 includes a thyristor and / or a relay.

[0063] Specifically, the gate of the field-effect transistor (FET) is connected to the controller 108. When the two FETs are of the same type, the controller 108 can provide opposite differential potential signals to the two FETs, thereby controlling the two FETs to alternately turn on and off. When the two FETs are of different types (e.g., one is P-type and the other is N-type), since the conduction potentials of the two FETs are opposite, the controller 108 can provide the same potential signal to the two FETs, enabling the two FETs to alternately turn on and off.

[0064] When the first switching device 112 is a thyristor, the control terminal of the thyristor is connected to the controller 108, so that the on / off state of the thyristor is controlled by the controller 108. When the first switching device 112 is a relay, the controlled circuit of the relay is connected to the corresponding capacitor branch 110, and its control circuit is connected to the controller 108, so that the on / off state of the relay is controlled by the controller 108. It should be noted that... Figure 9 and Figure 10 The examples illustrate cases where all first switching devices 112 are thyristors and cases where all first switching devices 112 are relays. In other embodiments, some first switching devices 112 can be thyristors and others can be relays, depending on the requirements. The selection of thyristors and relays enables the circuit to accommodate the large current flowing through the resonant unit 106, thereby improving the circuit reliability of the resonant unit 106.

[0065] The aerosol generating device provided by this utility model includes a power supply unit, a resonant unit, an inverter unit, and a controller. The resonant unit includes a capacitive component and an inductor; the capacitive component includes multiple capacitor branches, each of which includes at least one resonant capacitor and a first switching device. The inverter unit is coupled to the power supply unit and is used to generate alternating current. The controller is connected to the first switching device in each capacitor branch and is configured to control the on / off state of the first switching device, thereby adjusting the resonant frequency of the resonant unit to adapt it to inductors with different characteristics, ensuring the induction heating effect of the inductor and improving the user experience.

[0066] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An aerosol generating device, characterized in that, include: Power supply unit; A resonant unit, the resonant unit including a capacitive component and an inductor; the capacitive component including multiple capacitor branches, each of the capacitor branches including at least one resonant capacitor and a first switching device; An inverter unit is coupled to the power supply unit, and the inverter unit is used to generate alternating current; A controller is connected to a first switching device in the capacitor branch, and the controller is configured to control the on / off state of the first switching device.

2. The aerosol generating apparatus according to claim 1, characterized in that, The capacitive component is connected in series with the sensor.

3. The aerosol generating apparatus according to claim 1, characterized in that, The capacitive component is connected in parallel with the sensor.

4. The aerosol generating apparatus according to claim 1, characterized in that, Each of the capacitor branches includes multiple resonant capacitors. The combined circuit formed by connecting the multiple resonant capacitors in the capacitor branch in series, parallel, or in a series-parallel combination is connected in series with the corresponding first switching device.

5. The aerosol generating apparatus according to any one of claims 1-4, characterized in that, The total capacitance value of each capacitor branch in the capacitive component is equal.

6. The aerosol generating apparatus according to any one of claims 1-4, characterized in that, The total capacitance values ​​of each capacitor branch in the capacitive component are not all equal.

7. The aerosol generating apparatus according to claim 6, characterized in that, The total capacitance value of each capacitor branch in the capacitive component is set in a gradient.

8. The aerosol generating apparatus according to claim 1, characterized in that, The aerosol generating device includes a chamber for removably housing the sensor and its corresponding aerosol generating matrix.

9. The aerosol generating apparatus according to claim 1, characterized in that, The first switching device includes a thyristor and / or a relay.

10. The aerosol generating apparatus according to claim 1, characterized in that, The inverter unit includes two differentially configured second switching devices; One end of the second switching device is connected to the first end of the resonant unit and the positive terminal of the power supply unit, respectively, and the other end is connected to the ground terminal; The other second switching device has one end connected to the second terminal of the resonant unit and the positive terminal of the power supply unit, and the other end connected to the ground terminal.

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