WO2021073045A1 - 一种可变频声表面波电子烟 - Google Patents

一种可变频声表面波电子烟 Download PDF

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Publication number
WO2021073045A1
WO2021073045A1 PCT/CN2020/081117 CN2020081117W WO2021073045A1 WO 2021073045 A1 WO2021073045 A1 WO 2021073045A1 CN 2020081117 W CN2020081117 W CN 2020081117W WO 2021073045 A1 WO2021073045 A1 WO 2021073045A1
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WIPO (PCT)
Prior art keywords
metal
electrode
acoustic wave
surface acoustic
gap
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PCT/CN2020/081117
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English (en)
French (fr)
Inventor
李廷华
雷芋琳
韩熠
吴俊�
陈永宽
朱东来
胡泓
汤建国
李寿波
赵伟
张霞
洪鎏
巩效伟
吕茜
Original Assignee
云南中烟工业有限责任公司
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Priority claimed from CN202010120537.7A external-priority patent/CN111165886B/zh
Application filed by 云南中烟工业有限责任公司 filed Critical 云南中烟工业有限责任公司
Priority to EP20877513.0A priority Critical patent/EP3858162B1/en
Priority to JP2021510326A priority patent/JP7062835B2/ja
Priority to US17/270,452 priority patent/US11206867B2/en
Priority to RU2021103785A priority patent/RU2757761C1/ru
Priority to KR1020217003795A priority patent/KR102360279B1/ko
Publication of WO2021073045A1 publication Critical patent/WO2021073045A1/zh

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/05—Devices without heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10—Devices using liquid inhalable precursors
    • 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
    • A24F40/44—Wicks
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/48—Fluid transfer means, e.g. pumps
    • 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
    • A24F40/48—Fluid transfer means, e.g. pumps
    • A24F40/485—Valves; Apertures
    • 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
    • A24F40/60—Devices with integrated user interfaces
    • 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
    • A24F40/90—Arrangements or methods specially adapted for charging batteries thereof
    • 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
    • A24F40/90—Arrangements or methods specially adapted for charging batteries thereof
    • A24F40/95—Arrangements or methods specially adapted for charging batteries thereof structurally associated with cases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
    • B06B1/0284—Driving circuits for generating signals continuous in time for generating multiple frequencies with consecutive, i.e. sequential generation, e.g. with frequency sweep
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14538—Formation
    • H03H9/14541—Multilayer finger or busbar electrode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/176—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of ceramic material
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/25—Constructional features of resonators using surface acoustic waves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/111—Pads for surface mounting, e.g. lay-out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0653—Details
    • B05B17/0669—Excitation frequencies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/50—Application to a particular transducer type
    • B06B2201/55—Piezoelectric transducer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/70—Specific application
    • B06B2201/77—Atomizers

Definitions

  • the invention belongs to the technical field of electronic cigarettes, and particularly relates to a variable frequency surface acoustic wave electronic cigarette.
  • electrically heated atomized electronic cigarettes occupy the mainstream market of electronic cigarettes, which use resistance wire heating to generate local high temperature, so that the e-liquid in the cotton core or porous ceramic sheet is atomized to form an aerosol for users to smoke.
  • the electrically heated atomized electronic cigarette has a fast heat conduction rate and high atomization efficiency, but it is easy to produce harmful substances such as formaldehyde and carbon monoxide under the action of high temperature, which not only has health and safety hazards, but also greatly reduces the taste of smoking.
  • Another type of e-cigarette is an ultrasonic atomized e-cigarette. The e-cigarette requires a thin layer of e-cigarette to be evenly spread on the entire surface of the atomizer to achieve atomization.
  • e-cigarette If e-cigarette accumulates, the e-cigarette will appear during use. The amount of smoke is sometimes large and sometimes small, and even large-diameter smoke is produced. When the user is sucked into the mouth along the airflow channel, the taste experience will be reduced. In addition, the amount of pure ultrasonic atomization smoke is smaller than that of electric heating atomization, and an auxiliary ceramic heater is required to increase the amount of smoke to meet the user's experience requirements for hot smoke. .
  • the present invention is proposed to solve the above-mentioned problems.
  • the present invention provides a variable frequency surface acoustic wave electronic cigarette, which uses surface acoustic wave diffraction energy to realize smoke oil atomization, and at the same time, through a special atomization chip structure design, the frequency range of the surface acoustic wave is adjustable to further realize the smoke oil Effective adjustment of atomized smoke particle size.
  • the electronic cigarette of the present invention has simple overall structure, convenient assembly and high atomization efficiency, and can effectively satisfy users' different smoking experiences.
  • the present invention discloses a variable frequency surface acoustic wave electronic cigarette, which comprises an atomizer 2 with an atomization cavity 213 in the atomizer 2 and a variable frequency surface acoustic wave atomization is arranged at the lower part of the atomization cavity 213 Chip 203, the variable-frequency surface acoustic wave atomization chip 203 has an inverted trapezoidal interdigital transducer 2037; the atomization cavity 213 has an oil storage cavity 205, the oil storage cavity 205 and the atomization chip A porous ceramic sheet 204 is arranged between 203.
  • the inverted trapezoidal interdigital transducer 2037 includes a plurality of inverted trapezoidal metal interdigital electrodes a, b and reflective electrode c; the inverted trapezoidal interdigital transducer 2037 also includes two metal electrode bus bars, They are respectively a first metal electrode bus bar 20361 and a second metal electrode bus bar 20362.
  • a plurality of first metal interdigital electrodes a are connected to the first metal electrode bus bar 20361 with a trapezoidal longer bottom, and a plurality of second metal
  • the interdigital electrode b is connected to the second metal electrode bus bar 20362 with a trapezoidal shorter bottom; a plurality of the first metal interdigital electrodes a and a plurality of the second metal interdigital electrodes b are arranged in a finger-crossing shape , And a reflective electrode c is embedded between the two.
  • the arrangement of the metal interdigital electrode and the reflective electrode is: a first metal interdigital electrode a, a first gap d 1 , a second metal interdigital electrode b, a second gap d 2 , a reflective electrode c, and a second metal interdigital electrode.
  • the first metal interdigital electrode a the above arrangement continues in multiple groups to form the inverted trapezoidal interdigital transducer 2037; the average width of the first gap d 1 and the first metal interdigital transducer 2037
  • the average width of the electrode a is the same; the average width of the second gap d 2 is the same as the average width of the second metal interdigital electrode b; the average width of the third gap d 3 is the same as the average width of the reflective electrode c
  • the width is the same.
  • the first metal interdigital electrode a and the second metal interdigital electrode b have the same shape, wherein the first metal interdigital electrode a, the first gap d 1 , the second metal interdigital electrode b, and the second metal interdigital electrode b have the same shape.
  • the sum of the average widths of the second gap d 2 , the reflective electrode c, and the third gap d 3 is the wavelength p of the surface acoustic wave, and satisfies the first metal interdigital electrode a, or the first gap d 1 , or the second metal interdigital electrode
  • the average width of the electrode b or the second gap d 2 is one-eighth of the wavelength of the surface acoustic wave
  • the average width of the third gap d 3 or the reflective electrode c is one-fourth of the wavelength of the surface acoustic wave.
  • the atomization chip 203 further includes in sequence: a heat sink layer 2031, a thermally conductive layer 2032, and a piezoelectric base layer 2033, and the inverted trapezoidal interdigital transducer 2037 is arranged on the piezoelectric base layer 2033;
  • Two separate PCB pads are also arranged on the piezoelectric substrate layer 2033, which are a first PCB pad 20341 and a second PCB pad 20342, respectively.
  • the first metal electrode bus bar 20361 is connected to a power supply connecting line 2035.
  • the second metal electrode bus bar 20362 is connected to the second PCB pad 20342 through a power connection line 2035.
  • the electronic cigarette further includes a battery cell 3 with a circuit board 307 and a battery 305 therein, the battery cell 3 and the first PCB pad 20341 and the second PCB pad 20342
  • the magnetic thimble 212 is conductively connected.
  • the atomizer 2 has an atomizer housing 209, the atomizer housing 209 has an air flow channel 208, and the atomizer housing 209 has a suction nozzle 1, which is connected to the The airflow channel 208 is conductively connected; the atomizer housing 209 is provided with an airflow inlet 210, and the airflow inlet 210 and the inverted trapezoidal interdigital transducer 2037 are on the same level.
  • the electronic cigarette further includes a protective casing 301 in which the battery core 3 is arranged; the protective casing 301 is provided with a button 5, an indicator light 6 and a charging port 302 outside the protective casing 301.
  • Surface acoustic wave is a kind of mechanical wave whose energy is concentrated on the surface, the energy loss in the propagation direction is small (it can be ignored if there is no interference from other media), and the energy is exponentially attenuated in the direction perpendicular to the wave propagation direction, and its vibration frequency range Up to GHz, an order of magnitude higher than ultrasound.
  • the high frequency of surface acoustic wave makes the particle size of atomized smoke much smaller than that of ultrasonic atomized smoke, which not only effectively reduces the inhalation of large-diameter smoke.
  • the atomization chip of the present invention adopts the electrode width control unidirectional apodization interdigital electrode structure.
  • the innovation is that the electrode width control method is adopted to embed the reflective electrode inside the inverted trapezoidal interdigital transducer, so that the sound wave can only travel along Propagation in a single direction, all the energy of the sound wave is used for the atomization of smoke oil; at the same time, the finger structure of the metal interdigital electrode gradually transitions from the top to the bottom electrode width into an inverted trapezoid structure, so that the frequency of the atomization chip is no longer single fixed , But a variable frequency range, users can adjust the frequency range according to personal needs, so as to obtain atomized smoke of different particle sizes, which can not only meet the user’s personalized needs for smoke particle size, but also bring users different The suction experience.
  • variable frequency surface acoustic wave electronic cigarette of the present invention is used, under the premise of satisfying the normal smoking function of the electronic cigarette, the surface temperature of the atomizing chip is maintained at about 100°C, which is much lower than that of the electrically heated atomizing electronic cigarette
  • the heating atomization temperature (180-350°C) so the electric heating type high temperature causes the release of aldehyde chemical substances, carbonization, core burning and other safety hazards can be effectively improved; compared with the cold smoke produced by ultrasonic atomization electronic cigarettes , The smoke produced by SAW electronic cigarettes has a better temperature experience.
  • the variable frequency surface acoustic wave atomization chip of the present invention uses a lithium niobate single crystal atomization chip.
  • the atomization chip can maintain a normal working mode when the surface of the atomization chip is not in contact with the e-liquid, which shows that mechanical waves are atomizing.
  • the transmission and reflection of the chip surface does not cause dry burning when the e-liquid supply is insufficient. Therefore, the variable-frequency surface acoustic wave electronic cigarette of the present invention will not affect or affect the atomization chip and the atomizer when the e-liquid is exhausted. Damaged, stable and reliable.
  • the variable frequency surface acoustic wave electronic cigarette of the present invention adopts a light porous ceramic sheet with high porosity to realize oil guiding and locking.
  • the smoke oil is sucked out of the porous ceramic sheet by the surface acoustic wave, and the porous ceramic sheet is in contact with the porous ceramic sheet.
  • a layer of liquid film is automatically formed between the atomization chips, and atomization is generated in the area of the liquid film; when the atomization chip stops working, the e-liquid will automatically retract into the porous ceramic sheet. Therefore, the variable frequency surface acoustic wave electronic cigarette of the present invention can effectively avoid the problems of uneven distribution of smoke oil or accumulation of smoke oil caused by the smoke volume fluctuation or the large smoke particle size of the ultrasonic atomized electronic cigarette.
  • Figure 1 is a schematic diagram of the structure of a variable-frequency surface acoustic wave electronic cigarette of the present invention.
  • Figure 2 is an exploded view of a variable-frequency surface acoustic wave electronic cigarette of the present invention.
  • Figure 3 is a cross-sectional view of the atomizer of the present invention.
  • Figure 4 is an exploded view of the atomizer of the present invention.
  • Fig. 5 is a schematic diagram of the structure of the atomization chip of the present invention.
  • Power connection line 20361, first metal electrode bus bar; 20362, second metal electrode bus bar; 2037, inverted trapezoidal interdigital transducer; a, first metal interdigital electrode; b, second metal interdigital Electrode; c, reflective electrode; d 1 , the first gap; d 2 , the second gap; d 3 , the third gap; p, the wavelength of the surface acoustic wave; W, the internal range of the inverted trapezoidal interdigital transducer.
  • FIG. 1 The structure diagram of the variable frequency surface acoustic wave electronic cigarette of the present invention is shown in FIG. 1, which includes a suction nozzle 1, an atomizer 2, a battery core 3, an oil injection hole 4, a button 5, and an indicator light 6.
  • the atomizer 2 and the battery core 3 are connected in close contact with a magnetic thimble 212.
  • the suction nozzle 1 is used for the user to smoke cigarettes
  • the atomizer 2 is used to atomize the e-liquid to produce smoke
  • the battery core 3 is used for fogging.
  • the carburetor 2 provides the drive signal source
  • the oil injection hole 4 is used to fill the e-cigarette
  • the button 5 is used to switch the electronic cigarette on and off, adjust the frequency of the drive signal source, and control the output of the signal source.
  • the indicator light 6 is used to display the electronic cigarette Working status and power, etc.
  • the exploded view of the variable frequency surface acoustic wave electronic cigarette of the present invention is shown in Figure 2.
  • the suction nozzle 1 is located on the top of the atomizer 2; the internal structure of the atomizer includes a bottom plate 201, a silicone gasket 202, a variable frequency surface acoustic wave atomization chip 203, a porous ceramic sheet 204, an oil storage cavity 205, a silicone sealing sheet 206,
  • the battery core 3 is provided with a protective shell 301, charging The port 302, the limiting body 303, the nut 304, the battery 305, the second screw 306, the circuit board 307 and the bottom cover 308;
  • the oil injection hole 4 is located on the top of the atomizer 2 and at the same time on the side of the
  • the atomizer housing 209, the protective housing 301 and the bottom cover 308 of the atomizer 2 and the battery core 3 are all made of aluminum alloy materials with good heat conduction and heat dissipation effects; the porous ceramic sheet 204 is selected with good porosity (pore size).
  • the rate is generally in the range of 40%-70%) and is made of silicate material resistant to high temperature and high pressure, acid and alkali corrosion;
  • the heat sink 2031 is made of aluminum with better heat dissipation effect and lower cost, and the bottom is provided with a slot;
  • a heat conduction layer 2032 uses a thermally conductive silicone grease sheet with good bonding performance and thermal conductivity;
  • the piezoelectric base layer 2033 uses a 128°lithium niobate single chip propagating in the Y-cut and X-direction, with a thickness of 1mm-2mm, an electromechanical coupling coefficient of 5.5%, and The propagation speed of the surface wave is about 3990m/s, and the temperature coefficient is -72 ⁇ 10-6/°C;
  • the power connection wire 2035 adopts gold or silver wire with a diameter of 100 ⁇ m that can be used for the bonding process;
  • the cross-sectional view and exploded view of the atomizer of the variable frequency surface acoustic wave electronic cigarette of the present invention are shown in Figs. 3 and 4, respectively.
  • the atomizing core 203 is placed in the atomizing core stopper 211, and the upper end of the atomizing core stopper 211
  • An atomization cavity 213 is provided, and an oil storage cavity 205 is provided at the lower end of the silicone sealing sheet 206.
  • the porous ceramic sheet 204 adopts a bowl-shaped structure with a convex around the middle recess, and the size is just right to tightly fit with the lower port of the oil storage cavity 205 to form a complete oil storage
  • the assembled silicone sealing sheet 206 and porous ceramic sheet 204 are placed on the upper end of the atomization core stopper 211, the oil storage cavity 205 and the porous ceramic sheet 204 are just located in the atomization cavity 213, and the porous ceramic sheet 204 It is attached to the upper surface of the atomizer core 203 to realize oil supply and delivery; the right end of the atomizer core stopper 211 is equipped with a magnetic thimble 212 for accessing the driving signal source; the above assembly structure is placed in the atomizer housing 209, A piece of silicone gasket 202 is attached to the bottom to achieve heat insulation and sealing.
  • the bottom plate 201 is covered, and the first screw 207 is screwed in to fix the entire atomizer.
  • the e-liquid is injected from the oil injection hole 402 on the top of the atomizer 2, and the entire oil storage cavity 205 is automatically filled after the e-liquid is injected.
  • the silicone oil injection hole plug 401 is inserted into the oil injection hole 402 to seal.
  • the peripheral air flows in from the air inlet 210, which is on the same level as the inverted trapezoidal interdigital transducer 2037; the surface of the atomization chip 203 in the air-carrying atomizer 2 is porous
  • the e-liquid atomized smoke on the end face of the ceramic 204 enters the suction nozzle 1 through the air flow channel 208 for the smoker to suck.
  • the battery cell 3 of the electronic cigarette further includes: a protective housing 301, a charging port 302, a limiting body 303, a screw cap 304, a battery 305, a second screw 306, a circuit board 307, and a bottom cover 308.
  • the button 5 is installed in the battery core 3 protective shell 301 Then put the above assembly in the protective shell 301, and also make sure that the charging port is aligned with the charging port 302 at the bottom of the protective shell 301, the button 5 is connected to the button output port of the circuit board 307 through a wire, and the top of the protective shell 301 It is equipped with a magnetic thimble 212, which is connected to the signal output end of the circuit board 307 through a wire, and is fixed with a second screw 306 and a nut 304. After assembly, the position of the indicator light 6 is just at the bottom right of the protective shell 301 of the battery core 3 Side, and finally fasten the bottom cover 308 to complete the assembly and connection of the cells.
  • the structure diagram of the atomization chip of the variable-frequency surface acoustic wave electronic cigarette of the present invention is shown in FIG. 5, and the sequence includes: a heat sink 2031, a thermal conductive layer 2032, a piezoelectric base layer 2033, a first PCB pad 20341, and a second PCB
  • the inverted trapezoidal interdigital transducer 2037 includes: two metal electrode bus bars, namely the first metal electrode bus bar 20361 and the second metal electrode bus bar 20362
  • a plurality of first metal interdigital electrodes a are connected to the first metal electrode bus bar 20361 by a trapezoidal longer bottom, and a plurality of second metal interdigital electrodes b are connected to the second metal electrode by a trapezoidal shorter bottom.
  • the bus bar 20362 is connected; a plurality of first metal interdigital electrodes a and a plurality of the second metal interdigital electrodes b are arranged in a finger-crossing shape, and the first metal interdigital electrode a and the second metal interdigital electrode A reflective electrode c is embedded between b, and the reflective electrode c is not connected to any bus bar belonging to the electrode.
  • the inverted trapezoidal interdigital transducer 2037, the first PCB pad 20341, the second PCB pad 20342, and the piezoelectric substrate 2033 are all adhered to the upper surface of the heat sink 2031 through the thermally conductive layer 2032.
  • the first PCB pad 20341 and the second PCB pad 20342 are respectively connected to the first metal electrode bus bar 20361 and the second metal electrode bus bar 20362 by a power connection line 2035 through a bonding process.
  • the first PCB pad 20341 It is connected to the other end of the second PCB pad 20342 through the magnetic ejector pin 212 between the atomizer 2 and the battery core 3 to realize the input of the signal source.
  • the shape of the inverted trapezoidal interdigital transducer 2037 is shown in the partial enlarged view of the upper part of Fig. 5.
  • the frequency of the surface acoustic wave generated by the atomization chip 203 is determined by the structure of the inverted trapezoidal interdigital transducer 2037; the arrangement of the metal interdigital electrode and the reflective electrode is: the first metal interdigital electrode a, the first gap d 1 , The second metal interdigital electrode b, the second gap d 2 , the reflective electrode c, the third gap d 3 , the first metal interdigital electrode a..., the above arrangement continues in multiple groups to form the inverted trapezoidal interdigital transducer 2037
  • the average width of the first gap d 1 is the same as the average width of the first metal interdigital electrode a; the average width of the second gap d 2 is the same as the average width of the second metal interdigital electrode b
  • the average width of the third gap d 3 is the same as the average width of the
  • the frequency range of the generated surface acoustic wave is 20MHz-100MHz, it needs to be within the W range of the inverted trapezoidal interdigital transducer 2037 (see the partial enlarged view of the upper part of Fig. 5), the first metal interdigital electrode a, The uppermost ends of the first gap d 1 , the second metal interdigital electrode b, and the second gap d 2 each have a value of 15 ⁇ m, and their lower ends each have a value of 5 ⁇ m, that is, the wavelength range is 200 ⁇ m-40 ⁇ m.
  • the method for using a variable-frequency surface acoustic wave electronic cigarette of the present invention includes the following steps:
  • the battery cell 3 is charged by an external charging cable through the charging port 302; the e-liquid is injected through the oil injection hole 4, the e-liquid fills the oil storage cavity 205 and then penetrates into the porous ceramic sheet 204, and finally reaches the surface of the atomization chip 203 and locks the oil; atomization
  • the device 2 and the battery 3 are connected by a magnetic ejector pin 212.
  • the signal source is connected to the atomization chip 203 for signal input. Based on the inverse piezoelectric effect of the piezoelectric base layer 2033, the input electrical signal is converted into a mechanical vibration signal to generate a signal that propagates along the surface of the piezoelectric base layer 2033. Surface acoustic wave.
  • the surface acoustic wave When the surface acoustic wave is transmitted to the contact area of the porous ceramic sheet 204, the surface acoustic wave sucks out the e-liquid locked by the porous ceramic sheet 204 and forms a gap between the surface of the piezoelectric base layer 2033 and the end surface of the porous ceramic sheet 204 Layer of liquid film, the surface acoustic wave energy is diffracted into the liquid film of e-liquid, generating acoustic current and forming acoustic current force. The acoustic current force overcomes the surface tension and viscous force of the e-liquid film, so that the e-liquid produces nano-sized particle size.
  • Smoke suction through the mouthpiece 1, the peripheral air flows in from the air inlet 210, flows through the e-liquid atomization area, and the atomized smoke is delivered into the user's mouth along the airflow channel 208 and the mouthpiece 1.
  • the battery cell 3 will enter the standby power saving mode; in the power-on state, press the button 5 five times within 2 seconds, and the battery cell 3 will shut down, and the indicator 6 will flash red.
  • the indicator light 6 displays different colors according to the battery power from high to low, such as green (power> 70%), blue (power between 70% and 30%), and red (power ⁇ 30%); If the battery power is lower than 10% during use, the indicator light will flash and the electronic cigarette will automatically shut down.
  • the atomization chip can also work in a continuous frequency range, such as 20MHz-100MHz, and each frequency point corresponds to a smoke oil atomized smoke particle size. According to the taste of the user, it can be set and obtain different smoke particle sizes.

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Abstract

一种可变频声表面波电子烟，其包括雾化器(2)，雾化器(2)内有雾化腔(213)，雾化腔(213)下部设置有可变频声表面波雾化芯片(203)，可变频声表面波雾化芯片(203)上有倒梯形叉指换能器(2037)；雾化腔(213)内有储油腔(205)，储油腔(205)与雾化芯片(203)之间设置有多孔陶瓷片(204)。可变频声表面波电子烟可实现工作频率在设定范围内的任意调节，进而实现烟油雾化烟雾粒径的自主调控。

Description

一种可变频声表面波电子烟 技术领域
本发明属于电子烟技术领域，尤其涉及一种可变频声表面波电子烟。
背景技术
目前，电加热式雾化电子烟占据着电子烟的主流市场，其采用电阻丝加热产生局部高温，使棉芯或多孔陶瓷片中的烟油雾化形成气溶胶供用户抽吸。电加热式雾化电子烟导热速率快、雾化效率高，但高温作用下容易产生甲醛、一氧化碳等有害物质，既存在健康安全隐患，又使抽吸口感大打折扣。另一种电子烟为超声波雾化电子烟，该电子烟需要在整个雾化片表面均匀布上一层薄薄的烟油才能实现雾化，若烟油堆积会导致电子烟在使用过程中出现烟雾量时大时小的现象，甚至产生大粒径烟雾，被用户沿气流通道抽吸到口腔时，口感体验会下降。另外，单纯的超声波雾化烟雾量相比电加热雾化要小，需要辅助陶瓷加热片以增大烟雾量满足用户对热烟雾的体验需求。。
为解决上述问题，申请人设计了采用声表面波实现烟油雾化的电子烟系统(见中国专利ZL201810076941.1)，该电子烟系统有效地解决了电加热式雾化快速高热引发的潜在安全健康风险以及超声波雾化高耗低效、口感不佳的问题，但该系统烟油雾化后的烟雾粒径基本确定、无法任意调节，影响抽吸体验。
为解决上述问题提出了本发明。
发明内容
本发明提供了一种可变频声表面波电子烟，利用声表面波衍射能量实现烟油雾化，同时通过特殊的雾化芯片结构设计，使声表面波频率范围可调，以进一步实现烟油雾化烟雾粒径的有效调节。本发明的电子烟整体结构简单、组装方便、雾化效率高，能够有效满足用户的不同抽吸体验。
本发明公开了一种可变频声表面波电子烟，其包括雾化器2，所述雾化器2内有雾化腔213，所述雾化腔213下部设置有可变频声表面波雾化芯片203，所述可变频声表面波雾化芯片203上有倒梯形叉指换能器2037；所述雾化腔213内有储油腔205，所述储油腔205与所述雾化芯片203之间设置有多孔陶瓷片204。
优选地，所述倒梯形叉指换能器2037包括多条倒梯形的金属叉指电极a、b 和反射电极c；所述倒梯形叉指换能器2037还包括两条金属电极汇流条，分别为第一金属电极汇流条20361和第二金属电极汇流条20362，多条第一金属叉指电极a用梯形较长的底与所述第一金属电极汇流条20361连接，多条第二金属叉指电极b用梯形较短的底与所述第二金属电极汇流条20362连接；多条所述第一金属叉指电极a与多条所述第二金属叉指电极b呈手指交叉状排列，且两者之间内嵌有反射电极c。
优选地，所述金属叉指电极和反射电极的排列方式为：第一金属叉指电极a、第一间隙d 1、第二金属叉指电极b、第二间隙d 2、反射电极c、第三间隙d 3、第一金属叉指电极a……，上述排列延续多组构成所述倒梯形叉指换能器2037；所述第一间隙d 1的平均宽度与所述第一金属叉指电极a的平均宽度相同；所述第二间隙d 2的平均宽度与所述第二金属叉指电极b的平均宽度相同；所述第三间隙d 3的平均宽度与所述反射电极c的平均宽度相同。
优选地，所述第一金属叉指电极a和所述第二金属叉指电极b的形状相同，其中第一金属叉指电极a、第一间隙d 1、第二金属叉指电极b、第二间隙d 2、反射电极c和第三间隙d 3的平均宽度之和为声表面波的波长p，且满足第一金属叉指电极a、或第一间隙d 1、或第二金属叉指电极b或第二间隙d 2的平均宽度为声表面波的波长的八分之一，第三间隙d 3或反射电极c的平均宽度为声表面波的波长的四分之一。
优选地，所述雾化芯片203还顺序包括：散热片层2031、导热层2032和压电基底层2033，所述倒梯形叉指换能器2037布置在所述压电基底层2033上；所述压电基底层2033上还布置有两个分离的PCB焊盘，分别为第一PCB焊盘20341和第二PCB焊盘20342，所述第一金属电极汇流条20361通过电源连接线2035连接到所述第一PCB焊盘20341上，所述第二金属电极汇流条20362通过电源连接线2035连接到所述第二PCB焊盘20342上。
优选地，所述电子烟还包括电芯3，所述电芯3内有电路板307和电池305，所述电芯3和所述第一PCB焊盘20341及所述第二PCB焊盘20342通过磁吸顶针212导通连接。
优选地，所述雾化器2有雾化器外壳209，所述雾化器外壳209内有气流通道208，所述雾化器外壳209外有吸嘴1，所述吸嘴1与所述气流通道208导通连接；所述雾化器外壳209开有气流入口210，所述气流入口210与所述倒梯形 叉指换能器2037在同一水平面上。
优选地，所述电子烟还包括保护壳体301，所述电芯3布置在保护壳体301内；所述保护壳体301外设置有按键5和指示灯6和充电端口302。
本发明的有益效果在于：
1、声表面波是一种能量集中于表面，在传播方向上能量损耗小(在无其它介质干扰情况下可忽略不计)，在垂直于波传播方向上能量呈指数衰减的机械波，其振动频率范围高达GHz，比超声波高出一个数量级。在由基底振动引起的烟油雾化系统中，烟雾粒径与振动频率有直接关系，满足D＝KγH 2We 2/3/μL 2f(其中D为雾化烟雾粒径，K为比例系数，γ为雾化流体的表面张力，H为待雾化流体薄膜的特征高度，We为声韦伯数，μ为流体的动力粘性系数，L为待雾化流体的特征宽度，f为基底振动频率。)，不难发现烟雾粒径与振动频率成反比例关系，因此声表面波如此高的频率使其雾化烟雾粒径远小于超声波雾化烟雾粒径，不仅有效降低了大粒径烟雾吸入造成肺部沉积、损害身体的问题，而且烟雾粒径越小，烟油口感还原度越高、用户抽吸体验更佳。
2、本发明中的雾化芯片采用电极宽度控制单向变迹叉指电极结构，创新点在于采用电极宽度控制方法，在倒梯形叉指换能器的内部嵌入反射电极，使声波只能沿单一方向传播，将声波的全部能量都用于烟油雾化；同时金属叉指电极的指条结构由上到下电极宽度逐渐过渡变化成倒梯形结构，使雾化芯片的频率不再单一固定，而是一个可变的频率范围，用户可根据个人需求任意调节频率范围，从而获得不同粒径的雾化烟雾，既能满足用户对烟雾粒径个性化的需求，又能带给用户不同的抽吸体验。
3、本发明的可变频声表面波电子烟使用时，在满足电子烟正常抽吸功能的前提下，雾化芯片表面温度保持在100℃左右，该温度远低于电加热式雾化电子烟的加热雾化温度(180-350℃)，故电加热式高温引起醛类化学物质释放、碳化、烧芯等安全隐患问题能得到有效改善；而与超声波雾化电子烟产生的冷烟雾相比，声表面波电子烟产生的烟雾具有更好的温感体验。
4、本发明的可变频声表面波雾化芯片采用铌酸锂单晶雾化片，该雾化芯片在其表面没有烟油接触的情况下能够保持正常的工作模式，表现为机械波在雾化芯片表面的传输与反射，不存在烟油供应不足时产生干烧等现象，因此本发明的可变频声表面波电子烟在烟油耗尽时，不会对雾化芯片及雾化器造成影响或损 坏，稳定可靠。
5、本发明的可变频声表面波电子烟采用高孔隙率的轻质多孔陶瓷片实现导油锁油，在雾化时烟油被声表面波从多孔陶瓷片中吸出，在多孔陶瓷片与雾化芯片之间自动形成一层液膜，并在液膜区域产生雾化作用；当雾化芯片停止工作时，烟油会自动回缩至多孔陶瓷片中。因此，本发明的可变频声表面波电子烟能够有效避免超声波雾化电子烟存在烟油分布不均或烟油堆积导致烟雾量波动或烟雾粒径偏大的问题。
附图说明
图1为本发明的一种可变频声表面波电子烟的结构示意图。
图2为本发明的一种可变频声表面波电子烟的爆炸图。
图3为本发明的雾化器的剖视图。
图4为本发明的雾化器的爆炸图。
图5为本发明的雾化芯片的结构示意图。
附图标记：1、吸嘴；2、雾化器；3、电芯；4、注油孔；5、按键；6、指示灯；201、底板；202、硅胶垫片；203、雾化芯片；204、多孔陶瓷片；205、储油腔；206、硅胶密封片；207、第一螺丝；208、气流通道；209、雾化器外壳；210、气流入口；211、雾化芯限位器；212、磁吸顶针；213、雾化腔；301、保护壳体；302、充电端口；303、限位体；304、螺帽；305、电池；306、第二螺丝；307、电路板；308、底盖；401、硅胶注油孔塞；402、注油圆孔；2031、散热片；2032、导热层；2033、压电基底层；20341、第一PCB焊盘；20342、第二PCB焊盘；2035、电源连接线；20361、第一金属电极汇流条；20362、第二金属电极汇流条；2037、倒梯形叉指换能器；a、第一金属叉指电极；b、第二金属叉指电极；c、反射电极；d 1、第一间隙；d 2、第二间隙；d 3、第三间隙；p、声表面波的波长；W、倒梯形叉指换能器的内部范围。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下将结合附图及实施例，对本发明作进一步详细说明。
本发明的可变频声表面波电子烟的结构示意图如图1所示，其包括吸嘴1、雾化器2、电芯3、注油孔4、按键5和指示灯6。雾化器2与电芯3之间采用磁 吸顶针212紧密接触连接，吸嘴1用于供用户抽吸烟雾，雾化器2用于雾化烟油产生烟雾，电芯3用于给雾化器2提供驱动信号源，注油孔4用于加注烟油，按键5用于实现电子烟开关机、调节驱动信号源频率以及控制信号源输出等操作，指示灯6用于显示电子烟的工作状态及电量等。
本发明的可变频声表面波电子烟的爆炸图见图2。吸嘴1位于雾化器2的顶部；雾化器内部结构包含底板201、硅胶垫片202、可变频声表面波雾化芯片203、多孔陶瓷片204、储油腔205、硅胶密封片206、第一螺丝207、气流通道208、雾化器外壳209、气流入口210、雾化芯限位器211、磁吸顶针212和雾化腔213；所述电芯3设置有保护壳体301、充电端口302、限位体303、螺帽304、电池305、第二螺丝306、电路板307和底盖308；所述注油孔4位于雾化器2顶部且同时位于吸嘴1的侧边，包含硅胶注油孔塞401和位于雾化器顶部的注油圆孔402；所述按键5位于电芯3保护壳体301的侧面；所述指示灯6位于电芯3保护壳体301右下侧；所述雾化芯片203顺序包括散热片2031、导热层2032、压电基底层2033、第一PCB焊盘20341、第二PCB焊盘20342、电源连接线2035、第一金属电极汇流条20361、第二金属电极汇流条20362以及倒梯形叉指换能器2037。所述雾化器2和电芯3的雾化器外壳209、保护壳体301和底盖308均选用具有较好导热和散热效果的铝合金材料；多孔陶瓷片204选用具有良好孔隙率(孔隙率一般在40％-70％范围)且耐高温高压、抗酸碱腐蚀的硅酸盐材料制成；散热片2031选用散热效果较好、成本较低的铝片，底部设置开槽；导热层2032选用具有良好粘接性能和导热能力的导热硅脂片；压电基底层2033选用Y切X方向传播的128°铌酸锂单晶片，厚度为1mm-2mm，机电耦合系数为5.5％，声表面波的传播速度约为3990m/s，温度系数为-72×10-6/℃；电源连接线2035采用可用于绑定工艺的直径达100μm的金线或银线；第一金属电极汇流条20361和第二金属电极汇流条20362以及金属叉指电极a和b选用导电性能良好的铝、银或金材料等；金属叉指电极a和b的结构采用交叉的金属条上宽下窄的变迹结构，即倒梯形结构。
本发明的可变频声表面波电子烟的雾化器的剖视图和爆炸图分别见图3和图4，雾化芯203置于雾化芯限位器211中，雾化芯限位器211上端设置有雾化腔213，硅胶密封片206下端设置有储油腔205，多孔陶瓷片204采用中间凹陷周围凸起的碗状结构，尺寸刚好与储油腔205下端口紧密配合形成完整的储油导 油结构，将装配好的硅胶密封片206和多孔陶瓷片204置于雾化芯限位器211上端，储油腔205与多孔陶瓷片204刚好位于雾化腔213中，且多孔陶瓷片204与雾化芯203上表面贴合实现供油输送；雾化芯限位器211右端装有磁吸顶针212，用于接入驱动信号源；将上述装配结构置于雾化器外壳209中，底部贴一片硅胶垫片202实现隔热及密封，最后将底板201盖上，旋入第一螺丝207以固定整个雾化器。烟油从雾化器2顶部注油圆孔402注入，烟油注入后会自动填充满整个储油腔205，最后将硅胶注油孔塞401插入注油圆孔402进行密封。当用户通过吸嘴1进行抽吸动作时，外周空气从气流入口210流入，气流入口210与倒梯形叉指换能器2037在同一水平面上；空气携带雾化器2中雾化芯片203表面多孔陶瓷204端面的烟油雾化烟雾，经气流通道208进入吸嘴1供抽吸者抽吸。
一个实施例中，上述电子烟的电芯3还包括：保护壳体301、充电端口302、限位体303、螺帽304、电池305、第二螺丝306、电路板307和底盖308。首先将电路板307置于限位体303中，电池305置于电路板307下部，确保电路板307的充电端口302与限位体303对准；按键5安装于电芯3保护壳体301的侧面，然后将上述装配置于保护壳体301中，同样确保充电端口与保护壳体301底部的充电端口302对准，按键5通过导线与电路板307的按键输出端口连接，保护壳体301顶部设有磁吸顶针212，通过导线与电路板307的信号输出端连接，用第二螺丝306和螺帽304进行固定，装配好后指示灯6位置刚好位于电芯3保护壳体301的右下侧，最后扣紧底盖308，完成电芯的装配连接。
本发明的可变频声表面波电子烟的雾化芯片的结构示意图如图5所示，顺序包括：散热片2031、导热层2032、压电基底层2033、第一PCB焊盘20341、第二PCB焊盘20342、电源连接线2035和倒梯形叉指换能器2037；倒梯形叉指换能器2037包括：两条金属电极汇流条即第一金属电极汇流条20361和第二金属电极汇流条20362，多条第一金属叉指电极a用梯形较长的底与所述第一金属电极汇流条20361连接，多条第二金属叉指电极b用梯形较短的底与所述第二金属电极汇流条20362连接；多条第一金属叉指电极a与多条所述第二金属叉指电极b呈手指交叉状排列，且在第一金属叉指电极a和所述第二金属叉指电极b之间内嵌有反射电极c，反射电极c不与任何属电极汇流条连接。倒梯形叉指换能器2037、第一PCB焊盘20341、第二PCB焊盘20342及压电基底2033均通过导热 层2032粘附于散热片2031的上表面。第一PCB焊盘20341和第二PCB焊盘20342分别与第一金属电极汇流条20361和第二金属电极汇流条20362之间采用电源连接线2035通过绑定工艺进行连接，第一PCB焊盘20341和第二PCB焊盘20342的另一端通过雾化器2和电芯3之间的磁吸顶针212装配连接，实现信号源的输入。
倒梯形叉指换能器2037的形状见图5上部的局部放大图。雾化芯片203产生的声表面波的频率由倒梯形叉指换能器2037的结构决定；金属叉指电极和反射电极的排列方式为：第一金属叉指电极a、第一间隙d 1、第二金属叉指电极b、第二间隙d 2、反射电极c、第三间隙d 3、第一金属叉指电极a……，上述排列延续多组构成所述倒梯形叉指换能器2037；所述第一间隙d 1的平均宽度与所述第一金属叉指电极a的平均宽度相同；所述第二间隙d 2的平均宽度与所述第二金属叉指电极b的平均宽度相同；所述第三间隙d 3的平均宽度与所述反射电极c的平均宽度相同。本实施例中，第一金属叉指电极a和所述第二金属叉指电极b的形状完全相同；其中第一金属叉指电极a、第一间隙d 1、第二金属叉指电极b、第二间隙d 2、反射电极c和第三间隙d 3的平均宽度之和为声表面波的波长p(即p＝a+b+c+d 1+d 2+d 3)，且满足第一金属叉指电极a、或第一间隙d 1、或第二金属叉指电极b或第二间隙d 2的平均宽度为声表面波波长的八分之一(即a＝b＝d 1＝d 2＝p/8)；第三间隙d 3或反射电极c的平均宽度为声表面波的波长的四分之一(即c＝d 3＝p/4)。例如要实现产生的声表面波的频率范围为20MHz-100MHz，则需要在倒梯形叉指换能器2037的W范围内(见图5上部的局部放大图)，第一金属叉指电极a、第一间隙d 1、第二金属叉指电极b和第二间隙d 2的最上端各自取值为15μm，它们的最下端各自取值为5μm，即波长的变化范围为200μm-40μm。
本发明的一种可变频声表面波电子烟的使用方法，步骤如下：
电芯3通过充电端口302外接充电线完成电池充电；通过注油孔4注入烟油，烟油填充储油腔205后渗入到多孔陶瓷片204，最后到达雾化芯片203表面并锁油；雾化器2与电芯3通过磁吸顶针212连接。按键5开机后，信号源与雾化芯片203实现信号输入连通，基于压电基底层2033的逆压电效应，将输入的电信号转换为机械振动信号，产生沿压电基底层2033表面传播的声表面波，当声表面波传输到多孔陶瓷片204接触区域时，声表面波将多孔陶瓷片204锁住的烟油 吸出并在压电基底层2033表面和多孔陶瓷片204端面之间形成一层液膜，声表面波能量衍射进入烟油液膜中，产生声流作用并形成声流力，声流力克服烟油液膜的表面张力和粘性力，使烟油产生纳米级粒径的烟雾；通过吸嘴1进行抽吸，外周空气从气流入口210流入，流经烟油雾化区域，将雾化烟雾沿气流通道208和吸嘴1送入用户口腔。
长按按键5的时间达5s，电芯3自动停止输出以防止过吸；重新长按按键5可正常输出信号，使连接的雾化芯片203正常工作，并完成烟油雾化功能；开机状态下，连续0.5s内按按键5两次进入频率循环调节模式，每按按键5两次频率以10MHz步进，20MHz-100MHz之间共有9个档位循环，得到的烟油雾化后的颗粒的粒径可以任意调节。当然频率范围和档位也可以选择其他设置。重新开机时，电子烟保持上一次的关机设置数据启动运行。
开机状态下40s内若没有任何操作，电芯3进入待机省电模式；开机状态下连续2s秒内按按键5五次，电芯3关机，指示灯6红灯闪烁提示。整个过程中指示灯6显示颜色根据电池电量从高到低显示不同的颜色，如绿(电量>70％)、蓝(电量在70％与30％之间)、红(电量<30％)；在使用过程中若电池电量低于10％，指示灯会闪烁，电子烟会自动关机。
雾化芯片也可以在一个连续的频率范围内工作，如20MHz-100MHz，每一个频率点对应一种烟油雾化烟雾粒径，根据用户体验口感，可任意设置并获得不同的烟雾粒径。
以上所述仅为本发明的优先实施例，并非用于限制本发明。对于本领域的技术人员来说，在不付出创造性劳动的前提下，凡根据本发明揭露的技术方案或技术特征所作的任何修改、等同替换和改进等，皆应属于本发明的保护范围。

Claims (8)

  1. 一种可变频声表面波电子烟，其特征在于，其包括雾化器(2)，所述雾化器(2)内有雾化腔(213)，所述雾化腔(213)下部设置有可变频声表面波雾化芯片(203)，所述可变频声表面波雾化芯片(203)上有倒梯形叉指换能器(2037)；所述雾化腔(213)内有储油腔(205)，所述储油腔(205)与所述雾化芯片(203)之间为多孔陶瓷片(204)。
  2. 根据权利要求1所述的可变频声表面波电子烟，其特征在于，所述倒梯形叉指换能器(2037)包括多条倒梯形的金属叉指电极(a、b)和反射电极(c)；所述倒梯形叉指换能器(2037)还包括两条金属电极汇流条，分别为第一金属电极汇流条(20361)和第二金属电极汇流条(20362)，多条第一金属叉指电极(a)用梯形较长的底与所述第一金属电极汇流条(20361)连接，多条第二金属叉指电极(b)用梯形较短的底与所述第二金属电极汇流条(20362)连接；多条所述第一金属叉指电极(a)与多条所述第二金属叉指电极(b)呈手指交叉状排列，且两者之间内嵌有反射电极(c)。
  3. 根据权利要求2所述的可变频声表面波电子烟，其特征在于，所述金属叉指电极和反射电极的排列方式为：第一金属叉指电极(a)、第一间隙(d 1)、第二金属叉指电极(b)、第二间隙(d 2)、反射电极(c)、第三间隙(d 3)、第一金属叉指电极(a)……，上述排列延续多组构成所述倒梯形叉指换能器(2037)；所述第一间隙(d 1)的平均宽度与所述第一金属叉指电极(a)的平均宽度相同；所述第二间隙(d 2)的平均宽度与所述第二金属叉指电极(b)的平均宽度相同；所述第三间隙(d 3)的平均宽度与所述反射电极(c)的平均宽度相同。
  4. 根据权利要求3所述的可变频声表面波电子烟，其特征在于，所述第一金属叉指电极(a)和所述第二金属叉指电极(b)的形状相同，其中第一金属叉指电极(a)、第一间隙(d 1)、第二金属叉指电极(b)、第二间隙(d 2)、反射电极(c)和第三间隙(d 3)的平均宽度之和为声表面波的波长(p)，且满足第一金属叉指电极(a)、或第一间隙(d 1)、或第二金属叉指电极(b)、或第二间隙(d 2)的平均宽度为声表面波的波长的八分之一，第三间隙(d 3)或反射电极(c)的平均宽度为声表面波的波长的四分之一。
  5. 根据权利要求2所述的可变频声表面波电子烟，其特征在于，所述雾化芯片(203)还顺序包括：散热片层(2031)、导热层(2032)和压电基底层(2033)， 所述倒梯形叉指换能器(2037)布置在所述压电基底层(2033)上；所述压电基底层(2033)上还布置有两个分离的PCB焊盘，分别为第一PCB焊盘(20341)和第二PCB焊盘(20342)，所述第一金属电极汇流条(20361)通过电源连接线(2035)连接到所述第一PCB焊盘(20341)上，所述第二金属电极汇流条(20362)通过电源连接线(2035)连接到所述第二PCB焊盘(20342)上。
  6. 根据权利要求5所述的可变频声表面波电子烟，其特征在于，所述电子烟还包括电芯(3)，所述电芯(3)内有电路板(307)和电池(305)，所述电芯(3)和所述第一PCB焊盘(20341)及所述第二PCB焊盘(20342)通过磁吸顶针(212)导通连接。
  7. 根据权利要求1所述的可变频声表面波电子烟，其特征在于，所述雾化器(2)有雾化器外壳(209)，所述雾化器外壳(209)内有气流通道(208)，所述雾化器外壳(209)外有吸嘴(1)，所述吸嘴(1)与所述气流通道(208)导通连接；所述雾化器外壳(209)开有气流入口(210)，所述气流入口(210)与所述倒梯形叉指换能器(2037)在同一水平面上。
  8. 根据权利要求6所述的可变频声表面波电子烟，其特征在于，所述电子烟还包括保护壳体(301)，所述电芯(3)布置在保护壳体(301)内；所述保护壳体(301)外设置有按键(5)、指示灯(6)和充电端口(302)。
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