Intake control circuit, intake assembly and electronic cigarette

Abstract

This invention discloses an air intake control circuit, an air intake assembly, and an electronic cigarette. The air intake control circuit includes a battery, a first microphone, a second microphone, and a heating resistor. The positive terminal of the battery is connected to the input terminal of the first microphone, the output terminal of the first microphone is connected to the input terminal of the second microphone, the output terminal of the second microphone is connected to one end of the heating resistor, and the other end of the heating resistor is connected to the negative terminal of the battery. This air intake control circuit, by using two microphones, allows the pre-amplifier to output voltage to the post-amplifier after being triggered. The post-amplifier, after being triggered and receiving the input voltage, outputs voltage to drive the heating resistor. The heating resistor generates heat to atomize the e-liquid, producing vapor for the user. This effectively prevents the post-amplifier from forcibly restarting due to e-liquid seepage, enabling effective control of the air intake circuit and improving its reliability.

Description

Technical Field

[0001] This invention relates to the field of microcontroller technology, and more particularly to an air intake control circuit, an air intake assembly, and an electronic cigarette. Background Technology

[0002] Electronic cigarettes require an air intake assembly. The suction generated by the user's inhalation triggers the atomizing module within the air intake assembly, which then atomizes the e-liquid to produce vapor. In existing technologies, the air intake assembly incorporates a microphone. Airflow through the microphone generates vibrations that activate the circuit, thus triggering the atomizing module. A vent is required above the microphone. However, after prolonged use, e-liquid from the atomizing module can easily seep into the microphone through the vent. This e-liquid conducts electricity through the microphone, activating the circuit. In other words, existing technologies can lead to forced self-activation after e-liquid enters the microphone, making the air intake assembly uncontrollable. Therefore, existing air intake assemblies suffer from the problem of ineffective control after e-liquid infiltration. Summary of the Invention

[0003] This invention provides an air intake control circuit, an air intake component, and an electronic cigarette, aiming to solve the problem that existing air intake components cannot effectively control the seepage of e-liquid.

[0004] In a first aspect, embodiments of the present invention provide an air intake control circuit, wherein the air intake control circuit includes a battery, a first microphone, a second microphone, and a heating resistor;

[0005] The positive terminal of the battery is connected to the input terminal of the first microphone, the output terminal of the first microphone is connected to the input terminal of the second microphone, the output terminal of the second microphone is connected to one end of the heating resistor, and the other end of the heating resistor is connected to the negative terminal of the battery.

[0006] In the aforementioned air intake control circuit, the grounding terminals of the first microphone and the second microphone are connected to a first connection point, which is the connection point between the heating resistor and the negative terminal of the battery; the first connection point is grounded.

[0007] The aforementioned air intake control circuit, wherein the first microphone is a full-power microphone.

[0008] The aforementioned air intake control circuit, wherein the second microphone is a constant pressure microphone.

[0009] In a second aspect, embodiments of the present invention also provide an air intake assembly, the air intake assembly including an atomizing assembly, an air guide tube, a protective cover, and an air intake control circuit as described in the first aspect above;

[0010] The atomizing component is disposed at the end of the air guide tube, and the heating resistor is disposed on the atomizing component;

[0011] The protective cover is placed over the first microphone and the second microphone. The gap between the protective cover and the first microphone and the second microphone forms a connected air passage. An air outlet is provided on the protective cover at a position corresponding to the second microphone. The air outlet is connected to the atomizing component through an air supply channel.

[0012] The air intake assembly, wherein the first microphone and the second microphone are fixedly mounted on the PCB board, and the outer edge of the protective cover is fixedly connected to the PCB board;

[0013] Air inlets are provided on the PCB board at positions corresponding to the first microphone and the second microphone.

[0014] The air intake assembly wherein the distance between the first microphone and the second microphone is greater than the diameter of the air outlet.

[0015] The air intake assembly wherein the diameter of the air outlet is larger than the diameter of the air intake.

[0016] The air intake assembly, wherein the air delivery channel is a "U" shaped channel, and the PCB board and the atomizing assembly are respectively disposed at the upper outlet of the air delivery channel.

[0017] Thirdly, embodiments of the present invention also provide an electronic cigarette, wherein the electronic cigarette includes a shell, a mouthpiece, a dust plug, a liquid reservoir, and an air intake assembly as described in the second aspect above;

[0018] The outer shell is divided by a partition to form a first cavity and a second cavity; the liquid storage tank, the air guide tube, and the atomizing component are disposed in the first cavity; the battery, the first microphone, the second microphone, the PCB board, and the protective cover are all disposed in the second cavity;

[0019] The upper end of the air guide tube is connected to the mouthpiece, and the lower end of the air guide tube is connected to the atomizing component; the dust plug is fitted onto the mouthpiece.

[0020] An air inlet is provided at the lower end of the outer casing, and the air inlet is connected to an air inlet hole provided on the PCB board;

[0021] An air delivery channel is provided between the atomizing component and the air outlet, penetrating the partition.

[0022] This invention provides an air intake control circuit, an air intake assembly, and an electronic cigarette. The air intake control circuit includes a battery, a first microphone, a second microphone, and a heating resistor. The positive terminal of the battery is connected to the input terminal of the first microphone, the output terminal of the first microphone is connected to the input terminal of the second microphone, the output terminal of the second microphone is connected to one end of the heating resistor, and the other end of the heating resistor is connected to the negative terminal of the battery. This air intake control circuit, by using two microphones, allows the pre-amplifier to output voltage to the post-amplifier after being triggered. The post-amplifier, after being triggered and receiving the input voltage, outputs voltage to drive the heating resistor. The heating resistor generates heat to atomize the e-liquid for the user. This effectively prevents the post-amplifier from forcibly restarting due to e-liquid seepage, enabling effective control of the air intake circuit and improving its reliability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A circuit structure diagram of the intake control circuit provided in an embodiment of the present invention;

[0025] Figure 2 This is a partial structural diagram of the air intake assembly provided in an embodiment of the present invention;

[0026] Figure 3 A cross-sectional structural diagram of the intake assembly provided in an embodiment of the present invention;

[0027] Figure 4 This is a cross-sectional structural diagram of an electronic cigarette provided in an embodiment of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] In this embodiment, please refer to Figure 1 As shown in the figure, this embodiment of the invention provides an intake control circuit 1, which includes a battery BAT, a first microphone M1, a second microphone M2, and a heating resistor R. The positive terminal of the battery BAT is connected to the input terminal of the first microphone M1, the output terminal of the first microphone M1 is connected to the input terminal of the second microphone M2, the output terminal of the second microphone M2 is connected to one end of the heating resistor R, and the other end of the heating resistor R is connected to the negative terminal of the battery BAT.

[0033] The air intake control circuit 1 connects the entire circuit via two microphones. These microphones are typically capacitor-type. Their working principle involves the user inhaling, creating suction that forces airflow through the microphone. This airflow change causes the diaphragm inside the microphone to vibrate, altering the capacitance and outputting a voltage signal. In this embodiment, after both microphones are powered on and output their corresponding voltage signals, a voltage is applied to the input of the heating resistor R. This creates a voltage difference across the resistor, generating heat that atomizes the e-liquid, producing vapor. Specifically, in this application, the air intake control circuit 1 is equipped with two microphones. The first microphone M1 is also called the preamplifier, and the second microphone M2 is also called the power microphone. During operation, after the preamplifier is triggered and turned on, it outputs voltage to the power microphone. The power microphone is triggered and receives the input voltage, then outputs voltage to drive the heating resistor R. The heating resistor R generates heat to atomize the e-liquid to produce vapor for the user, thus effectively preventing the power microphone from forcibly starting due to e-liquid seepage. Even if e-liquid seeps into the power microphone, it cannot trigger the air intake control circuit 1, and therefore the heating resistor R cannot work, thus enabling the air intake control circuit to achieve effective control.

[0034] In a more specific embodiment, the grounding terminals of the first microphone M1 and the second microphone M2 are connected to a first connection point, which is the connection point between the heating resistor R and the negative terminal of the battery BAT; the first connection point is grounded. Specifically, the first microphone M1 is a full-power microphone. The second microphone M2 is a constant-voltage microphone.

[0035] Specifically, the first microphone M1 is equipped with a grounding terminal, which can be electrically connected to the first connection point. Similarly, the second microphone M2 is also equipped with a grounding terminal, which can be electrically connected to the first connection point, which is grounded. The first connection point is the connection point between the heating resistor R and the negative terminal of the battery BAT. This connection method enables the grounding terminals of the first microphone M1 and the second microphone M2 to be grounded, thereby improving the reliability of the microphone operation.

[0036] Among them, the first microphone M1 is a full-power microphone, meaning that the first microphone M1 can output electrical energy to the second microphone M2 at full power. This also means that the voltage at the input terminal of the second microphone M2 is equal to the voltage at the positive terminal of the power supply BAT. Figure 1 As shown, the voltage at the input terminal of the second microphone M2 is BAT+, which is equal to the voltage BAT+ at the positive terminal of the power supply BAT. Furthermore, the second microphone M2 can be set as a constant voltage microphone, meaning the output voltage OUT of the second microphone M2 remains constant. With the other end of the heating resistor R grounded, maintaining a constant output voltage OUT of the second microphone M2 ensures a constant voltage across the heating resistor R, meaning the heat generated by the heating resistor R per unit time remains constant. Therefore, during user operation, the amount of smoke generated by atomization through the heating resistor R per unit time is constant, and the amount of smoke inhaled by the user per unit time is also relatively constant, avoiding large fluctuations in smoke volume and improving the user experience.

[0037] The present invention also discloses an air intake assembly, such as Figures 2 to 4 As shown, the air intake assembly includes an atomizing component 11, an air duct 12, a protective cover 13, and an air intake control circuit 1 as described in the above embodiments; the atomizing component 11 is disposed at the end of the air duct 12, and the heating resistor R is disposed on the atomizing component 11; the protective cover 13 covers the first microphone M1 and the second microphone M2, and the gap between the protective cover 13 and the first microphone M1 and the second microphone M2 forms a communicating air passage 131; an air outlet 132 is provided on the protective cover 13 at a position corresponding to the second microphone M2, and the air outlet 132 is connected to the atomizing component 11 through an air supply channel 14.

[0038] Specifically, the protective cover 13 protects the first microphone M1 and the second microphone M2, preventing e-liquid from seeping into them and further enhancing the reliability of the air intake assembly. The protective cover 13 has an air outlet 132 located at a position corresponding to the second microphone M2. The suction generated by the user's inhalation causes airflow to pass through both the first microphone M1 and the second microphone M2. The airflow passing through the first microphone M1 is transmitted to the periphery of the second microphone M2 via the air passage 131. The airflow passing through the second microphone M2 merges with the airflow from the first microphone M1 and is then output to the atomizing assembly 11 through the air outlet 132. During normal operation, the air intake control circuit 1 is only activated when both the first microphone M1 and the second microphone M2 are connected, allowing the heating resistor R to generate heat to atomize the e-liquid. Even if a small amount of e-liquid seeps into the second microphone M2 through the air outlet 132 during use, the e-liquid will not affect the first microphone M1 because the first microphone M1 is far away from the air outlet 132. When the second microphone M2 is forcibly connected due to the seepage of e-liquid, the first microphone M1 can still control the on / off state of the air intake control circuit 1. That is, the first microphone M1 can effectively control the start / stop of the heating resistor R. Even when the second microphone M2 is not effectively controlled, the air intake assembly can still work stably, thereby improving the reliability of the air intake assembly.

[0039] In a more specific embodiment, the first microphone M1 and the second microphone M2 are fixedly mounted on the PCB board 15, and the outer edge of the protective cover 13 is fixedly connected to the PCB board 15; air inlets 151 are provided on the PCB board 15 at positions corresponding to the first microphone M1 and the second microphone M2. That is, the outer edge of the protective cover 13 is fixedly connected to one side of the PCB board 15 where the microphones are fixed.

[0040] Specifically, the first microphone M1 and the second microphone M2 are both fixedly mounted on the PCB board 15. The first microphone M1 and the second microphone M2 can be electrically connected to other circuit components in the air intake control circuit 1 through the PCB board. An air intake hole 151 is provided on the PCB board 15 at the position corresponding to the first microphone M1. Air enters through the air intake hole 151 corresponding to the first microphone M1, and the airflow passes through the first microphone M1 to connect the input and output terminals of the first microphone M1. Similarly, an air intake hole 151 is also provided on the PCB board 15 at the position corresponding to the second microphone M2. Air enters through the air intake hole 151 corresponding to the second microphone M2, and the airflow passes through the second microphone M2 to connect the input and output terminals of the second microphone M2.

[0041] Specifically, the distance between the first microphone M1 and the second microphone M2 is greater than the diameter of the air outlet 132. More specifically, the diameter of the air outlet 132 is greater than the diameter of the air inlet 151. Specifically, to further improve the reliability of the air intake assembly, the distance between the first microphone M1 and the second microphone M2 can be set to be greater than the diameter of the air outlet 132, further distancing the first microphone M1 from the air outlet 132, thus further preventing e-liquid from seeping into the first microphone M1 through the air outlet 132 and improving the reliability of the air intake assembly. Furthermore, a downwardly extending protrusion can be provided between the first microphone M1 and the second microphone M2, with a specific structure as shown below. Figure 3 As shown, by providing a downwardly extending protrusion between the first microphone M1 and the second microphone M2, it is possible to further prevent e-liquid from seeping into the first microphone M1, thereby further improving the reliability of the air intake assembly.

[0042] In a more specific embodiment, the air delivery channel 14 is a U-shaped channel, and the PCB board 15 and the atomizing component 11 are respectively disposed at the upper outlet of the air delivery channel 14. To prevent the e-liquid at the atomizing component 11 from being transferred from the air delivery channel 14 to the microphone of the PCB board 15, the air storage channel 14 can be configured as a U-shaped channel, in which case the upper end of the U-shaped channel has two outlets, and the PCB board 15 and the atomizing component 11 are respectively disposed at the two outlets at the upper end of the air delivery channel 14.

[0043] Specifically, the atomizing component 11 is provided with an atomizing through hole 111. The lower end of the atomizing through hole 111 is connected to the air supply channel 14, and the upper end of the atomizing through hole 111 is connected to the air guide tube 12. That is, the atomizing through hole 111 connects the air supply channel 14 and the air guide tube 12. The heating resistor R is set in the atomizing through hole 111. When the e-liquid is drawn into the atomizing through hole 111, the heat generated by the heating resistor R can atomize the e-liquid that has entered the atomizing through hole 111, thereby generating smoke. The smoke is output upward along the air guide tube 12.

[0044] For example, the heating resistor R can be specifically defined as a heating wire. The heating wire is coiled along the inner wall of the through hole 111, that is, the heating wire is arranged around the inner wall of the atomization through hole 111. This arrangement can increase the heating area, that is, increase the contact area between the heating resistor R and the outside world, and improve the atomization effect of the e-liquid through the heating resistor R.

[0045] This invention also discloses an electronic cigarette, the specific structure of which is as follows: Figure 4As shown, the electronic cigarette includes a shell 2, a mouthpiece 21, a dust plug 22, a liquid reservoir 23, and an air intake assembly as described in the above embodiments; the shell 2 is divided by a partition 24 to form a first cavity 201 and a second cavity 202; the liquid reservoir 23, the air duct 12, and the atomizing assembly 11 are disposed in the first cavity 201; the battery BAT, the first microphone M1, the second microphone M2, the PCB board 15, and the protective cover 13 are all disposed in... Inside the second cavity 202; the upper end of the air guide tube 12 is connected to the mouthpiece 21, and the lower end of the air guide tube 12 is connected to the atomizing component 11; the dust plug 22 covers the mouthpiece 21; the lower end of the outer shell 2 is provided with an air inlet 25, which is connected to the air inlet hole 151 provided on the PCB board 15; the atomizing component 11 and the air outlet 132 are provided with an air supply channel 14 that penetrates the partition 24.

[0046] Specifically, a partition 24 is disposed inside the outer shell 2, dividing the internal space of the outer shell 2 to form a first cavity 201 and a second cavity 202. A dust plug 22 is fitted onto the suction nozzle 21 to achieve a dustproof effect. An air guide tube 12 is disposed through the liquid storage tank 23, with its upper end connected to the suction nozzle 21 and its lower end connected to the atomizing assembly 11. Specifically, the atomizing assembly 11 is provided with an atomizing through hole 111, the lower end of which is connected to the air supply channel 14, and the upper end of which is connected to the air guide tube 12. The air supply channel 14 passes through the partition 24, that is, the air supply channel 14 is used to connect both sides of the partition 24, and the other end of the air supply channel 14 is connected to the air outlet 132. The specific structure is as follows. Figure 4 As shown. The air inlet 25 at the lower end of the outer casing 2 is connected to the air inlet 151 on the PCB board 15, so the airflow is transmitted from the air inlet 25 to the air inlet 151 and passes through the first microphone M1 and the second microphone M2.

[0047] This invention provides an air intake control circuit, an air intake assembly, and an electronic cigarette. The air intake control circuit includes a battery, a first microphone, a second microphone, and a heating resistor. The positive terminal of the battery is connected to the input terminal of the first microphone, the output terminal of the first microphone is connected to the input terminal of the second microphone, the output terminal of the second microphone is connected to one end of the heating resistor, and the other end of the heating resistor is connected to the negative terminal of the battery. This air intake control circuit, by using two microphones, allows the pre-amplifier to output voltage to the post-amplifier after being triggered. The post-amplifier, after being triggered and receiving the input voltage, outputs voltage to drive the heating resistor. The heating resistor generates heat to atomize the e-liquid for the user, effectively preventing the post-amplifier from forcibly restarting due to e-liquid seepage. This ensures effective control of the air intake circuit and improves its reliability.

[0048] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An air intake assembly, characterized in that, The air intake assembly includes an atomizing component, an air guide tube, a protective cover, and an air intake control circuit, wherein the atomizing component is disposed at the end of the air guide tube; The air intake control circuit includes a battery, a first microphone, a second microphone, and a heating resistor, wherein the heating resistor is disposed on the atomizing assembly; The positive terminal of the battery is connected to the input terminal of the first microphone, the output terminal of the first microphone is connected to the input terminal of the second microphone, the output terminal of the second microphone is connected to one end of the heating resistor, and the other end of the heating resistor is connected to the negative terminal of the battery. The first microphone is a full-power microphone; the second microphone is a constant-voltage microphone. A protective cover is provided on the first microphone and the second microphone. The gap between the protective cover and the first microphone and the second microphone forms a connected air passage. An air outlet is provided on the protective cover at a position corresponding to the second microphone. A downwardly extending protrusion is provided at the air passage between the first microphone and the second microphone. The first microphone and the second microphone are fixedly mounted on the PCB board, and the outer edge of the protective cover is fixedly connected to the PCB board. Air inlets are provided on the PCB board at positions corresponding to the first microphone and the second microphone.

2. The intake assembly according to claim 1, characterized in that, The grounding terminals of the first microphone and the second microphone are connected to a first connection point, which is the connection point between the heating resistor and the negative terminal of the battery; the first connection point is grounded.

3. The intake assembly according to claim 1 or 2, characterized in that, The air outlet is connected to the atomizing component via an air delivery channel.

4. The intake assembly according to claim 3, characterized in that, The distance between the first microphone and the second microphone is greater than the diameter of the air outlet.

5. The intake assembly according to claim 4, characterized in that, The diameter of the air outlet is larger than the diameter of the air inlet.

6. The intake assembly according to claim 4, characterized in that, The gas delivery channel is a "U" shaped channel, and the PCB board and the atomizing component are respectively located at the upper outlet of the gas delivery channel.

7. An electronic cigarette, characterized in that, The electronic cigarette includes a shell, a mouthpiece, a dust plug, a liquid reservoir, and an air intake assembly as described in any one of claims 1-6; The outer shell is divided by a partition to form a first cavity and a second cavity; the liquid storage tank, the air guide tube, and the atomizing component are disposed in the first cavity; the battery, the first microphone, the second microphone, the PCB board, and the protective cover are all disposed in the second cavity; The upper end of the air guide tube is connected to the mouthpiece, and the lower end of the air guide tube is connected to the atomizing component; the dust plug is fitted onto the mouthpiece. An air inlet is provided at the lower end of the outer casing, and the air inlet is connected to an air inlet hole provided on the PCB board; An air delivery channel is provided between the atomizing component and the air outlet, penetrating the partition.

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