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WO2024198263A1 - Capteur d'écoulement d'air, et atomiseur électronique et procédé de commande associé - Google Patents

Capteur d'écoulement d'air, et atomiseur électronique et procédé de commande associé Download PDF

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Publication number
WO2024198263A1
WO2024198263A1 PCT/CN2023/119798 CN2023119798W WO2024198263A1 WO 2024198263 A1 WO2024198263 A1 WO 2024198263A1 CN 2023119798 W CN2023119798 W CN 2023119798W WO 2024198263 A1 WO2024198263 A1 WO 2024198263A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode member
airflow sensor
electrode
airflow
capacitance value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/119798
Other languages
English (en)
Chinese (zh)
Inventor
付尧
马胜祥
田宇旺
邹一中
章笑笑
黄鹰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imiracle Shenzhen Technology Co Ltd
iMiracle HK Ltd
Original Assignee
Imiracle Shenzhen Technology Co Ltd
iMiracle HK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Imiracle Shenzhen Technology Co Ltd, iMiracle HK Ltd filed Critical Imiracle Shenzhen Technology Co Ltd
Publication of WO2024198263A1 publication Critical patent/WO2024198263A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • 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
    • A24F40/51—Arrangement of sensors
    • 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
    • A24F40/40—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
    • A24F40/50—Control or monitoring

Definitions

  • the present application relates to the technical field of electronic atomizers, and in particular to an airflow sensor, an electronic atomizer and a control method thereof.
  • the microphones of atomizers all use a front back-pole structure to detect the signal of oral inhalation. That is, in the working state, the back plate is in front of the electrode membrane along the direction of airflow.
  • the distance between the back plate and the electrode membrane becomes smaller and the capacitance becomes larger.
  • the adapted electronic chip collects the signal of increased capacitance, and judges it as the user's oral inhalation action based on the signal of increased capacitance, so it turns on the output control, heats and atomizes the smoke oil of the atomizer through the heating wire, and outputs smoke.
  • the front back-pole microphone detection technology has technical problems such as being unable to effectively distinguish abnormal input signals and being prone to self-starting risks.
  • an embodiment of the present application provides an airflow sensor for an electronic atomizer, the airflow sensor comprising a housing, a PCB board, a first electrode member, and a second electrode member;
  • the housing cooperates with the PCB board to form a receiving space, the first electrode member and the second electrode member are spaced apart and arranged opposite to each other in the receiving space, and a capacitor gap is formed between the first electrode member and the second electrode member;
  • the first electrode member and the second electrode member are electrically connected to the PCB board respectively.
  • the first electrode member includes a hard first electrode plate
  • the second electrode member includes a flexible electrode film. Airflow can pass through the first electrode plate and cause the flexible electrode film to bulge in a direction away from the first electrode plate, thereby reducing the capacitance value between the first electrode member and the second electrode member.
  • the second electrode member further includes a support ring, a through hole is provided in the middle of the support ring, and the flexible electrode film covers the through hole.
  • the PCB board, the first electrode plate and the housing are respectively provided with air flow holes.
  • the airflow sensor further includes a connecting member, which is disposed on the outer periphery of the first electrode member and is used to fixedly connect the first electrode member and the inner side wall of the housing.
  • the airflow sensor further includes a gasket with an annular structure, wherein the gasket is disposed between the first electrode member and the second electrode member, and the gasket is used to space and maintain the relative position of the first electrode member and the second electrode member.
  • the airflow sensor further includes a protective net, the protective net cover being arranged on the housing. Airflow holes.
  • an embodiment of the present application provides an airflow sensor for an electronic atomizer, the airflow sensor comprising a first electrode member and a second electrode member; when the user inhales through the mouth, the second electrode member can deform along the direction of the airflow and move away from the first electrode member to increase the distance between the second electrode member and the first electrode member.
  • an embodiment of the present application provides an electronic atomizer, which is the airflow sensor in the above embodiment of the electronic atomizer.
  • an embodiment of the present application provides a control method for the electronic atomizer based on the above embodiment, the control method comprising:
  • the working state of the atomization assembly is controlled according to the decreasing state of the capacitance value.
  • the step of controlling the working state of the atomization assembly according to the decreasing state of the capacitance value includes:
  • the atomization component is controlled to start atomization operation.
  • the step of controlling the atomization component to start atomization operation includes: controlling the working current of the atomization component according to the difference between the capacitance value and the preset threshold.
  • the second electrode member of the airflow sensor when the user inhales through the mouth, can deform along the direction of the airflow flow and move away from the first electrode member, so that the distance between the second electrode member and the first electrode member becomes larger and the capacitance value decreases.
  • the airflow sensor for an electronic atomizer provided in the embodiment of the present application, by placing the back electrode plate rearward, that is, the second electrode member is deformed in a direction away from the first electrode member, so that the capacitance value between the first electrode member and the second electrode member is reduced as a control signal, thereby effectively distinguishing abnormal signal inputs caused by situations such as leakage of liquid from the cigarette cartridge to the sensor surface and hand touching the sensor, and avoiding self-starting due to responding to abnormal signal inputs.
  • FIG1 is a schematic cross-sectional view of the structure of an atomizer microphone in the related art
  • FIG2 is a schematic diagram of a local structure of the atomizer microphone head deformed due to airflow in the embodiment of FIG1 ;
  • FIG3 is a schematic cross-sectional view of the overall structure of an embodiment of an airflow sensor of the present application.
  • FIG4 is a schematic diagram of the structure disassembly of the airflow sensor in the embodiment of FIG3 ;
  • FIG5 is a schematic cross-sectional view of the structure of the flexible electrode film of the airflow sensor in the embodiment of FIG3 when deformation occurs;
  • FIG6 is a schematic diagram of a partial structure in FIG5 ;
  • FIG7 is a schematic structural diagram of an embodiment of the electronic atomizer of the present application.
  • FIG8 is a schematic diagram of a flow chart of an embodiment of a control method for an electronic atomizer of the present application.
  • FIG. 9 is a schematic diagram of a flow chart of controlling the working state of the atomization assembly according to the decreasing state of the capacitance value.
  • first”, “second”, and “third” in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
  • the features defined as “first”, “second”, and “third” can expressly or implicitly include at least one of the features.
  • the meaning of “multiple” is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
  • all directional indications (such as up, down, left, right, front, back%) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings).
  • Figure 1 is a schematic cross-sectional view of the structure of the atomizer microphone in the related art
  • Figure 2 is a schematic diagram of the local structure of the atomizer microphone in the embodiment of Figure 1 that is deformed due to airflow.
  • the structure of the front back-pole atomizer microphone includes a shell 10a, a back-pole plate 10b, an electrode membrane 10c (bracket 10c1), and a PCB board 10d from the outside to the inside. This type of atomizer microphone is used as a trigger element for the atomizer.
  • the principle is that when a person uses the atomizer and inhales through the mouth, the electrode membrane 10c deforms along the airflow direction (arrow Z direction in the figure) (the state in Figure 1 is the state before the electrode membrane 10c is deformed, and the state in Figure 2 is the state after the electrode membrane 10c is deformed), and approaches the back plate 10b.
  • the parallel plate capacitor between the electrode membrane 10c and the back plate 10b increases in capacitance due to the decrease in the distance between the back plate 10b and the electrode membrane 10c.
  • the adapted electronic chip collects the signal of increased capacitance, and judges the user's inhalation action through the signal of increased capacitance, so the output control is turned on, and the atomizer's tobacco oil is heated and atomized through the heating wire to output smoke.
  • the above scheme uses the increase in capacitance as a trigger signal.
  • the capacitance of the parallel plate capacitor of the atomizer microphone will increase.
  • the electronic chip collects unstable input signals, it is possible to respond to abnormal signals and start output, resulting in self-starting.
  • the embodiment of the present application provides another airflow sensor for an electronic atomizer.
  • Figure 3 is a schematic diagram of the overall structure of an embodiment of the airflow sensor of the present application
  • Figure 4 is a schematic diagram of the structural disassembly of the airflow sensor in the embodiment of Figure 3.
  • the airflow sensor in the embodiment of the present application is used in devices including electronic cigarettes, electronic atomizers, etc.
  • the alias in the industry is a microphone.
  • the airflow sensor 100 in this embodiment includes but is not limited to the following structural parts: a housing 110, a PCB board 120, a first electrode member 130, and a second electrode member 140.
  • the housing 110 cooperates with the PCB board 120 to form a receiving space 1000
  • the first electrode member 130 and the second electrode member 140 are spaced and arranged opposite to each other in the receiving space 1000, and a connecting pin 122 may be provided on the side of the PCB board 120 away from the receiving space 1000.
  • a capacitor gap 1001 is formed between the first electrode member 130 and the second electrode member 140.
  • the first electrode member 130 and the second electrode member 140 are electrically connected to the PCB board 120 respectively (not shown in the figure).
  • the first electrode member 130 may include a support member 131 and a hard first electrode plate 132, wherein the material of the support member 131 may be a resin material, and the material of the hard first electrode plate 132 may be a metal plate, such as a copper plate, an aluminum alloy plate, etc., which is not specifically limited here.
  • the second electrode member 140 may include a support ring 141 and a flexible electrode film 142, wherein a through hole 1410 is provided in the middle of the support ring 141, and the flexible electrode film 142 covers the through hole 1410.
  • the material of the support ring 141 may be copper, plastic, etc.
  • the flexible electrode film 142 may be a conductive film material such as copper foil, aluminum foil, carbon fiber, etc.
  • the airflow may pass through the first electrode plate 132 and cause the flexible electrode film 142 to bulge in a direction away from the first electrode plate 132, thereby reducing the capacitance value between the first electrode member 130 and the second electrode member 140.
  • FIG. 5 is a schematic cross-sectional view of the structure when the flexible electrode film of the airflow sensor in the embodiment of FIG. 3 is deformed
  • FIG. 6 is a schematic view of the local structure in FIG. 5
  • the PCB board 120 is provided with an air flow hole 121
  • the first electrode plate 132 is provided with an air flow hole 1321
  • the shell 110 is provided with an air flow hole 111
  • the cavities on both sides of the flexible electrode film 142 (marked 1002 and 1003 in Figure 3) are not connected.
  • the gas in the cavity 1002 between the shell 110 and the flexible electrode film 142 will be sucked out through the air flow hole 111 on the shell 110.
  • the cavity 1003 on the side of the flexible electrode film 142 facing the first electrode plate 132 is connected to the external air pressure.
  • the flexible electrode film 142 bulges in the direction away from the first electrode plate 132 (arrow X direction in the figure), thereby reducing the capacitance value between the first electrode member 130 (the first electrode plate 132) and the second electrode member 140 (the flexible electrode film 142).
  • S represents the facing area of the first electrode plate 132 and the second electrode member 140
  • 1/4 ⁇ k represents the vacuum permittivity.
  • the airflow sensor 100 in the embodiment of the present application also includes a connecting member 150, which is arranged on the outer periphery of the first electrode member 130 and is used to fix the first electrode member 130 and the inner wall of the outer shell 110.
  • the connecting member 150 can be an annular structure, and the material can be plastic or rubber, etc.
  • the airflow sensor 100 in the embodiment of the present application may also include a gasket 160 of an annular structure, which is arranged between the first electrode member 130 and the second electrode member 140.
  • the gasket 160 is used as a spacer and maintains the relative position of the first electrode member 130 and the second electrode member 140.
  • the specific function is to ensure that the relative position relationship (spacing d and facing area S) between the flexible electrode film 142 and the first electrode plate 132 is stable, so that the capacitance value is stable when it is not in use (when there is no airflow passing through the sensor).
  • the material of the gasket 160 can be The plastic has a function of insulating between the first electrode member 130 and the second electrode member 140 .
  • the airflow sensor 100 in the embodiment of the present application may also include a protective net 170, which covers the airflow hole 111 of the shell 110 to prevent dust and water and prevent pollutants such as atomized liquid (cigarette oil) from entering the airflow sensor.
  • a protective net 170 which covers the airflow hole 111 of the shell 110 to prevent dust and water and prevent pollutants such as atomized liquid (cigarette oil) from entering the airflow sensor.
  • the airflow sensor in the embodiment of the present application places the back plate at the rear, that is, the second electrode member is deformed in a direction away from the first electrode member, so that the capacitance value between the first electrode member and the second electrode member is reduced as a control signal, thereby effectively distinguishing abnormal signal inputs caused by situations such as liquid leakage from the cigarette cartridge to the sensor surface and hand touching the sensor, and avoiding self-starting due to responding to abnormal signal inputs.
  • the embodiment of the present application also provides an electronic atomizer, please refer to Figure 7,
  • Figure 7 is a schematic diagram of the structure of an embodiment of the electronic atomizer of the present application
  • the electronic atomizer in the embodiment of the present application includes but is not limited to the following structures: an atomizer assembly 300, a battery 400, an airflow sensor 100 and a housing 500, wherein the battery 400, the atomizer assembly 300 and the airflow sensor 100 are respectively arranged in the housing 500 for connection, and the PCB board 120 of the airflow sensor 100 is used to control the working state of the atomizer assembly 300 according to the change of the capacitance value.
  • the atomizer assembly 300 can specifically include structures such as a heating element and an oil storage element.
  • control function of the electronic atomizer can be integrated into the PCB board 120 of the airflow sensor 100, and the PCB board 120 of the airflow sensor 100 serves as the control main board of the electronic atomizer.
  • a control circuit board structure can be separately provided outside the airflow sensor 100, and the control circuit board is used to control the working status of the atomization assembly 300, the battery 400 and the airflow sensor 100, etc. The detailed features of this part are within the understanding of those skilled in the art and will not be described in detail here.
  • the embodiment of the present application also provides a control method for the electronic atomizer structure in the aforementioned embodiment, please refer to Figure 8, which is a flow chart of an embodiment of the control method of the electronic atomizer of the present application.
  • the control method provided in this embodiment can be run on the electronic atomizer, specifically, it can be executed by the control circuit board of the electronic atomizer, and the control circuit board can execute all or part of the steps.
  • the control method includes but is not limited to the following steps.
  • Step S100 detecting the capacitance value of the airflow sensor.
  • the parallel plate capacitance decreases as the distance between the flexible electrode film 142 and the first electrode plate 132 increases, so as to generate a microphone capacitance with a reduced capacitance.
  • the control method in the embodiment of the present application further includes step S200 , which controls the working state of the atomization component according to the decreasing state of the capacitance value.
  • FIG. 9 is a schematic flow chart of controlling the working state of the atomization component according to the decreasing state of the capacitance value.
  • the process specifically includes the following steps.
  • Step S210 comparing the detected capacitance value of the airflow sensor with a preset threshold value.
  • the preset threshold value may be pre-set and stored, and the preset threshold value may be set as follows: when the control circuit board is powered on, the capacitance value of the airflow sensor (hereinafter referred to as the microphone) at this time is collected as the power-on reference value A; in the non-oral inhalation state, a periodic sampling is performed at a first set time interval (which may be 3-25 seconds, such as 25 seconds, 20 seconds, 16 seconds, 15 seconds, 10 seconds, 5 seconds, 3 seconds, etc., which is not specifically limited here), and the capacitance value of the microphone at this time is collected as the periodic reference value B; in the non-oral inhalation state, the capacitance value of the microphone is collected at a second set time interval as the short-term reference value C; Generally speaking, the second time interval is less than the first time interval, and the second time interval can be 0.1-3 seconds, for example, 3 seconds, 2 seconds, 1 second, 0.5 seconds, etc., which are not specifically limited here.
  • the reference capacitance value D is updated and calculated to obtain the preset parameter.
  • the capacitance of the microphone at this time is collected as the power-on reference value A
  • periodic sampling is performed once every first set time interval to collect the capacitance of the microphone at this time as the periodic reference value B, and the capacitance of the microphone is collected once every second set time interval as the short-term reference value C.
  • the reference capacitance value D is updated and calculated to obtain the preset parameters, thereby obtaining the real-time dynamic capacitance change of the atomizer microphone, and comparing the capacitance change with the capacitance reduction state of the atomizer microphone capacitor, the accuracy of distinguishing abnormal signal inputs is further improved to avoid responding to abnormal signal inputs and causing self-starting.
  • a fixed value E can also be simply set as a reference for comparison. Then the detected capacitance value of the airflow sensor is compared with the preset threshold (such as the reference capacitance value D).
  • the process also includes step S220, when the capacitance value is less than the preset threshold, controlling the atomization component to start atomization operation; step S230, when the capacitance value is not less than (greater than or equal to) the preset threshold, the entire process can be ended or returned to the previous step.
  • the detected capacitance value of the airflow sensor may be specifically compared with a fixed preset threshold value E, or the atomizing component may be controlled to perform atomization when the capacitance value of the airflow sensor is reduced to a set interval multiple lower than the reference capacitance value D (e.g., 2% to 4% of the reference capacitance value D).
  • the atomizing component may be controlled to perform atomization when the capacitance value is reduced to a set interval multiple lower than the reference capacitance value D (e.g., 2% to 4% of the reference capacitance value D).
  • step S220 it can also specifically include controlling the working current of the atomization component according to the difference between the capacitance value and the preset threshold value.
  • the atomizer component is controlled to work with a larger current to increase the atomization volume, so that the user can inhale atomized smoke that matches the airflow volume, meeting the user's different atomized smoke volume requirements for different inhalation volumes.
  • the control of the atomizer component is limited to on and off.
  • the control method of the electronic atomizer in the embodiment of the present application wherein the airflow sensor places the back plate at the rear, that is, the second electrode member is deformed in the direction away from the first electrode member, and the reduction in the capacitance value between the first electrode member and the second electrode member is collected as a control signal, thereby effectively distinguishing abnormal signal inputs caused by situations such as the leakage of liquid from the cigarette cartridge to the sensor surface and the hand touching the sensor, thereby avoiding the occurrence of self-starting due to responding to abnormal signal inputs.

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  • Electrostatic Spraying Apparatus (AREA)

Abstract

L'invention concerne un capteur d'écoulement d'air (100) ainsi qu'un atomiseur électronique et un procédé de commande associé. Le capteur d'écoulement d'air (100) comprend un boîtier (110), une carte à circuit imprimé (120), un premier élément d'électrode (130) et un deuxième élément d'électrode (140)? Le boîtier (110) et la carte à circuit imprimé (120) coïncident pour former un espace de réception (1000), le premier élément d'électrode (130) et le deuxième élément d'électrode (140) sont espacés l'un de l'autre et sont disposés de manière opposée dans l'espace de réception (1000), et un espace capacitif (1001) est formé entre le premier élément d'électrode (130) et le deuxième élément d'électrode (140). Le premier élément d'électrode (130) et le deuxième élément d'électrode (140) sont connectés séparément à la carte à circuit imprimé (120). Le premier élément d'électrode (130) comprend une première plaque d'électrode dure (132), et le deuxième élément d'électrode (140) comprend un film d'électrode flexible (142). Un écoulement d'air peut pénétrer à travers la première plaque d'électrode (132) et permet au film d'électrode flexible (142) de faire saillie dans la direction à l'écart de la première plaque d'électrode (132), de sorte que la valeur de capacité entre le premier élément d'électrode (130) et le deuxième élément d'électrode (140) est réduite. Le capteur d'écoulement d'air (100) peut discriminer efficacement une entrée de signal anormal provoquée par des situations dans lesquelles un liquide fuit d'une cartouche sur la surface du capteur, le capteur est touché par une main, et similaire, ce qui permet d'éviter l'apparition d'un auto-démarrage provoqué par une action de réponse à l'entrée de signal anormal.
PCT/CN2023/119798 2023-03-25 2023-09-19 Capteur d'écoulement d'air, et atomiseur électronique et procédé de commande associé Pending WO2024198263A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310301325.2 2023-03-25
CN202310301325.2A CN116268632A (zh) 2023-03-25 2023-03-25 气流传感器、电子雾化器及其控制方法

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Publication Number Publication Date
WO2024198263A1 true WO2024198263A1 (fr) 2024-10-03

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WO (1) WO2024198263A1 (fr)

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* Cited by examiner, † Cited by third party
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CN116268632A (zh) * 2023-03-25 2023-06-23 爱奇迹(香港)有限公司 气流传感器、电子雾化器及其控制方法
CN116671667A (zh) * 2023-06-21 2023-09-01 深圳市同跃电子有限公司 后置背极式雾化器咪头检测方法、装置与雾化器
CN118077979A (zh) * 2024-04-11 2024-05-28 爱奇迹创造有限公司 雾化器、雾化装置及控制方法和装置、控制器、存储介质

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CN115836752A (zh) * 2022-12-07 2023-03-24 杭州拓尔微电子有限公司 一种气流传感器、控制电路、控制方法及其电子烟
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US20150305410A1 (en) * 2009-09-18 2015-10-29 Minilogic Device Corporation Ltd. Electronic smoke apparatus
CN112353015A (zh) * 2020-12-03 2021-02-12 深圳湃科锐锋科技有限公司 一种电子烟控制芯片和电子烟
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