CN206472856U - A kind of ultrasonic electronic cigarette working control circuit - Google Patents
A kind of ultrasonic electronic cigarette working control circuit Download PDFInfo
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- CN206472856U CN206472856U CN201720170911.8U CN201720170911U CN206472856U CN 206472856 U CN206472856 U CN 206472856U CN 201720170911 U CN201720170911 U CN 201720170911U CN 206472856 U CN206472856 U CN 206472856U
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- current sampling
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Abstract
The utility model discloses a kind of ultrasonic electronic cigarette working control circuit, including power module and on-off circuit, the power module passes sequentially through on-off circuit, ultrasound-driven circuit is electrically connected with ultrasonic atomizatio piece, also include current sampling circuit, signal amplification circuit and microcontroller, the current sampling circuit is electrically connected with ultrasound-driven circuit, the output end of current sampling circuit is electrically connected by signal amplification circuit with microcontroller, the power end of microcontroller, the power end of signal amplification circuit is electrically connected with power module, first output end of microcontroller is electrically connected with the control end of on-off circuit.The utility model can timely and accurately detect the abnormalities such as dry combustion method, bubble oil or short circuit, and deenergization module and warn consumer when there is abnormality, ensure that consumer can be handled abnormal conditions in the very first time, Consumer's Experience is good, improves the security, stability and service life of ultrasonic electronic cigarette.
Description
Technical field
The utility model belongs to electronic cigarette technical field, more particularly to a kind of ultrasonic electronic cigarette working control circuit.
Background technology
Tobacco tar in ultrasonic electronic cigarette is the raw material that smog is produced, and the tobacco tar on ultrasonic atomizatio piece surface is by Oil Guide cotton from storage
Imported in oil pocket.Ultrasonic atomization piece is as the core component of high-frequency ultrasonic electronic cigarette, and whether ultrasonic electronic cigarette can stablize
Normal work depends on the working condition of ultrasonic atomization piece.When there is dry combustion method, bubble oil or short circuit phenomenon, atomizing piece can not
Normal work, the serious working life that may be burnt operating circuit, shorten electronic cigarette.
When shoe cream room lacks tobacco tar or Oil Guide cotton occurs tobacco tar can not being directed at into atomizing piece extremely, ultrasonic atomizatio piece table
Face can be in the dry-fire condition of smokeless oil, and the direct feel of smoker is suction non smoke, and now ultrasonic atomization piece vibration rubs
Depletion of wearing it is small so that needed for resonance energy reduce, thus ultrasound-driven module input current be less than normal work when electric current,
Timely power cutoff module is now needed with protection circuit, while smoker need to add tobacco tar or check Oil Guide cotton like state.
When causing Oil Guide excessive velocities when tobacco tar leakage in shoe cream room or Oil Guide cotton appearance exception, tobacco tar is largely gathered in
Ultrasonic atomization piece surface, atomizing piece is in bubble oil condition, and the direct feel of smoker is suction smog very little and has tobacco tar spray
Splash, now ultrasonic atomization piece surface vibration frictional dissipation, which increases, make it that energy needed for resonance increases thus ultrasound-driven module is defeated
Electric current when entering electric current more than normal work, now needs timely power cutoff module with protection circuit, while smoker needs to check
Oil leak situation or Oil Guide cotton like state.
When ultrasonic atomizatio module is extremely short-circuit, ultrasound-driven module input current increases extremely, now needs shut-off electricity in time
Source module is with protection circuit, while smoker need to check circuit connection.
As shown in figure 1, existing ultrasonic electronic cigarette working control circuit includes being linked to be work time with ultrasonic atomizatio module 9
The power module 1 and on-off circuit 3 on road, wherein ultrasonic atomizatio module 9 include ultrasound-driven circuit 6 and ultrasonic atomizatio piece 7, power supply
Module 1 passes sequentially through on-off circuit 3, ultrasound-driven circuit 6 and electrically connected with ultrasonic atomizatio piece 7.It can be seen that, existing ultrasonic electronic
Cigarette working control circuit only has the function of the simplest work of driving ultrasonic atomizatio piece 7, can not detect dry combustion method, bubble oil or
The abnormal operations such as short circuit, can not when there are abnormal conditions timely automated deenergization module 1 with protection circuit or
Warn user.
In view of the disadvantages mentioned above of existing ultrasonic electronic cigarette working control circuit, in the prior art, consumer be all according to
Judge whether ultrasonic electronic cigarette occurs in that abnormal operation by use feeling directly perceived, thus can not be timely and accurately to different
Reason condition is handled, poor user experience, and ultrasonic electronic cigarette service life is short.
The content of the invention
Prior art fully relies on the use feeling directly perceived of consumer to judge whether ultrasonic electronic cigarette occurs in that exception
Working condition, thus timely and accurately abnormal conditions can not be handled, poor user experience, ultrasonic electronic cigarette service life
It is short.The purpose of this utility model is that there is provided a kind of ultrasonic electronic cigarette job control electricity for above-mentioned the deficiencies in the prior art
Road, can timely and accurately detect the abnormalities such as dry combustion method, bubble oil or short circuit, and the i.e. deenergization when there is abnormality
Module simultaneously warns consumer, it is ensured that consumer can be handled abnormal conditions in the very first time, and Consumer's Experience is good, service life
It is long.
In order to solve the above technical problems, the technical scheme that the utility model is used is：
A kind of ultrasonic electronic cigarette working control circuit, including power module and on-off circuit, the power module is successively
Electrically connected by on-off circuit, ultrasound-driven circuit with ultrasonic atomizatio piece, it, which is structurally characterized in that, also includes current sampling circuit, letter
Number amplifying circuit and microcontroller, the current sampling circuit are electrically connected with ultrasound-driven circuit, the output of current sampling circuit
End electrically connected by signal amplification circuit with microcontroller, the power end of microcontroller, the power end of signal amplification circuit with
Power module is electrically connected, and the first output end of microcontroller is electrically connected with the control end of on-off circuit.
Ultrasonic atomization piece vibration frictional dissipation, which reduces, during due to dry combustion method causes energy needed for resonance to reduce, ultrasound-driven mould
The input current of block is less than electric current during normal work；Ultrasonic atomization piece surface vibration frictional dissipation increases so that humorous during bubble oil
Energy increase needed for shaking, the electric current when input current of ultrasound-driven module is more than normal work；Ultrasound-driven module when short-circuit
Input current increase extremely, based on this principle, the utility model is provided for detecting ultrasound-driven circuit operating current
Current sampling circuit, sends into microcontroller after amplifying through signal amplification circuit, microcontroller judges ultrasound according to the value detected
Whether atomizing piece is operated in normal condition, micro- when the operating current that microcontroller detects ultrasound-driven circuit occurs abnormal
Controller is that controlling switch circuit disconnects, so as to disconnect the electrical connection between ultrasonic atomizatio module and power module, is protected
Circuit.It can be seen that, the utility model can timely and accurately detect the abnormalities such as dry combustion method, bubble oil or short circuit, and different in appearance
Deenergization module immediately during normal state, protects operating circuit, extends the service life of electronic cigarette, functional reliability is high.
In the utility model, microprocessor only carries out simple judgement to the value detected and compared, therefore is not related to
The improvement of program or method, belongs to the protection object of utility model.
As the first preferred embodiment, the power module, on-off circuit, current sampling circuit and ultrasound-driven circuit according to
Secondary electrical connection.
As second of preferred embodiment, the power module, current sampling circuit, on-off circuit and ultrasound-driven circuit according to
Secondary electrical connection.
As the third preferred embodiment, the test side of the current sampling circuit is electrically connected with ultrasound-driven circuit.
In the first scheme, the load of current sampling circuit is ultrasonic atomizatio module（Ultrasound-driven circuit and ultrasonic atomizatio
Piece）.In second scheme, the load of current sampling circuit is on-off circuit and ultrasonic atomizatio module（Ultrasound-driven circuit and super
Sound atomizing piece）.In 3rd in scheme, in current sampling circuit insertion ultrasound-driven circuit, it is loaded as ultrasound-driven circuit
A part and ultrasonic atomizatio piece.The control principle of these three schemes is identical, differs only in circuit connection structure different.
Further, in addition to the output end of microcontroller second reminding module electrically connected.
As a kind of preferred embodiment, the reminding module include electrically connected with microcontroller the first prewarning unit, second
Prewarning unit and the 3rd prewarning unit.
By said structure, when microprocessor detects abnormal operation（Dry combustion method, bubble oil or short circuit）When, microprocessor
Consumer is pointed out by reminding module.Preferably, a kind of cue of each working condition correspondence, i.e., carried by different
Show that signal reminds consumer to take different counter-measures.Such as, when detecting dry combustion method, prompting letter is sent by the first prewarning unit
Number, remind smoker addition tobacco tar or check Oil Guide cotton like state；When detecting bubble oil, prompting letter is sent by the second prewarning unit
Number, remind smoker to check oil leak situation or Oil Guide cotton like state；When a short circuit is detected, prompting letter is sent by the 3rd prewarning unit
Number, remind smoker to check circuit connection.It can be seen that, the utility model ensure that consumer learns electronics in the very first time
Cigarette is in any abnormal operation, so as to carry out respective handling to abnormal conditions in time.
As the first preferred embodiment, the current sampling circuit includes the resistance and the first electric capacity for being linked to be parallel branch,
The one end of the output end of on-off circuit, the first input end of signal amplification circuit with the parallel circuit is connected, ultrasound-driven
The other end of the input of circuit, the second input of signal amplification circuit with the parallel branch is connected.
As second of preferred embodiment, the current sampling circuit includes the resistance and the first electric capacity for being linked to be parallel branch,
The one end of power module, the first input end of signal amplification circuit with the parallel circuit is connected, the input of on-off circuit,
The other end of second input of signal amplification circuit with the parallel branch is connected.
As the third preferred embodiment, the current sampling circuit includes the resistance and the first electric capacity for being linked to be parallel branch,
The current sampling circuit is attempted by ultrasound-driven circuit two ends, and the two ends of current sampling circuit are electrically connected with signal amplification circuit
Connect.
As a kind of preferred embodiment, the signal amplification circuit includes electric current induction amplifier and the second electric capacity, and electric current is adopted
Input of the two ends of sample circuit with electric current induction amplifier is connected, output end and the on-off circuit electricity of electric current induction amplifier
Connection, one end of the second electric capacity is electrically connected with power module, the other end ground connection of the second electric capacity, the power supply of electric current induction amplifier
End is electrically connected with power module, and the reference signal input of electric current induction amplifier and the earth terminal of electric current induction amplifier connect
Ground.
The utility model can timely and accurately detect the abnormalities such as dry combustion method, bubble oil or short circuit, and exception occurring
Deenergization module and consumer is warned during state, it is ensured that consumer can be handled abnormal conditions in the very first time, user
Experience, improve the security, stability and service life of ultrasonic electronic cigarette.
Brief description of the drawings
Fig. 1 is the structural representation of existing ultrasonic electronic cigarette working control circuit.
Fig. 2 is the structural representation of the utility model electronic cigarette working control circuit embodiment one.
Fig. 3 is the structure connection diagram of the utility model current sampling circuit and signal amplification circuit.
Fig. 4 is the structural representation of the utility model electronic cigarette working control circuit embodiment two.
Fig. 5 is the structural representation of the utility model electronic cigarette working control circuit embodiment three.
Wherein, 1 is power module, and 2 be microcontroller, and 3 be on-off circuit, and 4 be current sampling circuit, and 5 be that signal amplifies
Circuit, 6 be ultrasound-driven circuit, and 7 be ultrasonic atomizatio piece, and 8 be reminding module, and 81 be the first prewarning unit, and 82 be the second early warning
Unit, 83 be the 3rd prewarning unit, and 9 be ultrasonic atomizatio module, and R is resistance, and C1 is the first electric capacity, and C2 is the second electric capacity, and U is electricity
Flow induction amplifier.
Embodiment
Embodiment one
As shown in Fig. 2 ultrasonic electronic cigarette working control circuit embodiment one includes power module 1, on-off circuit 3, electricity
Sample circuit 4, signal amplification circuit 5 and microcontroller 2 are flowed, the current sampling circuit 4 is electrically connected with ultrasound-driven circuit 6,
The output end of current sampling circuit 4 is electrically connected by signal amplification circuit 5 with microcontroller 2, power end, the letter of microcontroller 2
The power end of number amplifying circuit 5 is electrically connected with power module 1, the first output end of microcontroller 2 and the control of on-off circuit 3
End electrical connection.The power module 1 passes sequentially through on-off circuit 3, current sampling circuit 4, ultrasound-driven circuit 6 and ultrasonic atomizatio
Piece 7 is electrically connected.The load of current sampling circuit 4 is ultrasonic atomizatio module 9（Ultrasound-driven circuit 6 and ultrasonic atomizatio piece 7）.
Ultrasonic electronic cigarette working control circuit also includes the reminding module 8 electrically connected with the output end of microcontroller 2 second.
The reminding module 8 includes the first prewarning unit 81, the second prewarning unit 82 and the 3rd early warning list electrically connected with microcontroller 2
Member 83.
As shown in figure 3, the current sampling circuit 4 includes the resistance R and the first electric capacity C1 for being linked to be parallel branch, switch electricity
The one end of the output end on road 3, the first input end of signal amplification circuit 5 with the parallel circuit is connected, ultrasound-driven circuit 6
The other end with the parallel branch of input, the second input of signal amplification circuit 5 be connected.
The signal amplification circuit 5 includes electric current induction amplifier U and the second electric capacity C2, the two ends of current sampling circuit 4
Input with electric current induction amplifier U is connected, and electric current induction amplifier U output end is electrically connected with on-off circuit 3, and second
Electric capacity C2 one end is electrically connected with power module 1, the second electric capacity C2 other end ground connection, electric current induction amplifier U power end
Electrically connected with power module 1, electric current induction amplifier U reference signal input and electric current induction amplifier U earth terminal are equal
Ground connection.U-shaped number of electric current induction amplifier is U/INA199.
In the utility model, power module 1 is used to provide different operating voltages to each several part circuit.Current sample electricity
Road 4 is used for the current value for gathering load, and the current value collected is converted into electric current induction amplifier U input common mode voltage
Value.When electric current induction amplifier U input common mode voltage is more than reference voltage（Reference voltage REF is zero in the utility model）
When, input common mode voltage is after amplification by the output voltage signal V-ADC of signal amplification circuit 5 to microcontroller 2.
On-off circuit 3 is used for switching off and on for the input voltage for controlling ultrasound-driven circuit 6.Ultrasound-driven circuit 6 is used
Suitable driving voltage and driving frequency are provided in the ultrasonic atomizatio piece 7, to drive the resonance of ultrasonic atomizatio piece 7, tobacco tar is atomized.
Reminding module 8 includes pointing out and prompting control assembly, and the mode that reminding module 8 is realized can use the finger of different colours
Show lamp and its control circuit, sounding component（Buzzer, loudspeaker etc.）And its control circuit, vibrations motor and its control circuit, show
Display screen（OLED, LCD or LED）And its control circuit etc..
Microprocessor is used for data processing and provides various control signals, the peripheral indicating module of extension connection, microprocessor
By detecting that the voltage (V-ADC) that current sampling circuit 4 and signal amplification circuit 5 are exported provides corresponding signal, to control
Whether on-off circuit 3 works and selects corresponding prewarning unit to alarm（Such as indicator lamp prompting or auditory tone cues）.
Embodiment two
It is illustrated in figure 4 the structural representation of ultrasonic electronic cigarette working control circuit embodiment two, the work of embodiment two
Make principle identical with embodiment one, structure annexation is similar with embodiment one, and difference is, current sampling circuit 4
Load as on-off circuit 3 and ultrasonic atomizatio module 9（Ultrasound-driven circuit 6 and ultrasonic atomizatio piece 7）, i.e. the power module 1,
Current sampling circuit 4, on-off circuit 3 and ultrasound-driven circuit 6 are sequentially connected electrically；The current sampling circuit 4 includes being linked to be simultaneously
Join branch road resistance R and the first electric capacity C1, power module 1, signal amplification circuit 5 first input end with the parallel circuit
One end be connected, the input of on-off circuit 3, the second input of signal amplification circuit 5 are another with the parallel branch
End is connected.For in embodiment two with identical structure in embodiment one, do not do word herein and repeat, but have no effect on this area
Technical staff to understanding of the present utility model and realization.
Embodiment three
It is illustrated in figure 5 the structural representation of ultrasonic electronic cigarette working control circuit embodiment three, the work of embodiment three
Make principle identical with embodiment one, structure annexation is similar with embodiment one, and difference is, current sampling circuit 4 is embedding
Enter in ultrasound-driven circuit 6, it loads the part and ultrasonic atomizatio piece 7 for ultrasound-driven circuit 6, i.e. the current sample
The test side of circuit 4 is electrically connected with ultrasound-driven circuit 6；The current sampling circuit 4 include be linked to be parallel branch resistance R and
First electric capacity C1, the current sampling circuit 4 is attempted by the two ends of ultrasound-driven circuit 6, the two ends of current sampling circuit 4 with letter
Number amplifying circuit 5 is electrically connected.For in embodiment three with identical structure in embodiment one, do not do word herein and repeat, but simultaneously
Those skilled in the art is not influenceed to understanding of the present utility model and realization.
Embodiment of the present utility model is described above in conjunction with accompanying drawing, but the utility model is not limited to
The embodiment stated, above-mentioned embodiment is only schematical, rather than limitation, this area it is common
Technical staff is not departing from the utility model objective and scope of the claimed protection situation under enlightenment of the present utility model
Under, many forms can be also made, these are belonged within protection domain of the present utility model.
Claims (10)
1. a kind of ultrasonic electronic cigarette working control circuit, including power module（1）And on-off circuit（3）, the power module
（1）Pass sequentially through on-off circuit（3）, ultrasound-driven circuit（6）With ultrasonic atomizatio piece（7）Electrical connection, it is characterised in that also include
Current sampling circuit（4）, signal amplification circuit（5）And microcontroller（2）, the current sampling circuit（4）With ultrasound-driven electricity
Road（6）Electrical connection, current sampling circuit（4）Output end pass through signal amplification circuit（5）With microcontroller（2）Electrical connection, it is micro-
Controller（2）Power end, signal amplification circuit（5）Power end and power module（1）Electrical connection, microcontroller（2）'s
First output end and on-off circuit（3）Control end electrical connection.
2. ultrasonic electronic cigarette working control circuit as claimed in claim 1, it is characterised in that the power module（1）, open
Powered-down road（3）, current sampling circuit（4）With ultrasound-driven circuit（6）It is sequentially connected electrically.
3. ultrasonic electronic cigarette working control circuit as claimed in claim 1, it is characterised in that the power module（1）, electricity
Flow sample circuit（4）, on-off circuit（3）With ultrasound-driven circuit（6）It is sequentially connected electrically.
4. ultrasonic electronic cigarette working control circuit as claimed in claim 1, it is characterised in that the current sampling circuit
（4）Test side and ultrasound-driven circuit（6）Electrical connection.
5. the ultrasonic electronic cigarette working control circuit as described in any one of Claims 1-4, it is characterised in that also including with
Microcontroller（2）The reminding module of second output end electrical connection（8）.
6. ultrasonic electronic cigarette working control circuit as claimed in claim 5, it is characterised in that the reminding module（8）Bag
Include and microcontroller（2）First prewarning unit of electrical connection（81）, the second prewarning unit（82）With the 3rd prewarning unit（83）.
7. ultrasonic electronic cigarette working control circuit as claimed in claim 2, it is characterised in that the current sampling circuit
（4）Resistance including being linked to be parallel branch（R）With the first electric capacity（C1）, on-off circuit（3）Output end, signal amplification circuit
（5）One end with the parallel circuit of first input end be connected, ultrasound-driven circuit（6）Input, signal amplification electricity
Road（5）The other end of second input with the parallel branch be connected.
8. ultrasonic electronic cigarette working control circuit as claimed in claim 3, it is characterised in that the current sampling circuit
（4）Resistance including being linked to be parallel branch（R）With the first electric capacity（C1）, power module（1）, signal amplification circuit（5）First
The one end of input with the parallel circuit is connected, on-off circuit（3）Input, signal amplification circuit（5）It is second defeated
Enter the other end of the end with the parallel branch to be connected.
9. ultrasonic electronic cigarette working control circuit as claimed in claim 4, it is characterised in that the current sampling circuit
（4）Resistance including being linked to be parallel branch（R）With the first electric capacity（C1）, the current sampling circuit（4）It is attempted by ultrasound-driven
Circuit（6）Two ends, current sampling circuit（4）Two ends and signal amplification circuit（5）Electrical connection.
10. the ultrasonic electronic cigarette working control circuit as described in any one of claim 7 to 9, it is characterised in that the signal
Amplifying circuit（5）Including electric current induction amplifier（U）With the second electric capacity（C2）, current sampling circuit（4）Two ends and electric current
Induction amplifier（U）Input be connected, electric current induction amplifier（U）Output end and on-off circuit（3）Electrical connection, the second electricity
Hold（C2）One end and power module（1）Electrical connection, the second electric capacity（C2）The other end ground connection, electric current induction amplifier（U）'s
Power end and power module（1）Electrical connection, electric current induction amplifier（U）Reference signal input and electric current induction amplifier
（U）Earth terminal be grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720170911.8U CN206472856U (en) | 2017-02-24 | 2017-02-24 | A kind of ultrasonic electronic cigarette working control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720170911.8U CN206472856U (en) | 2017-02-24 | 2017-02-24 | A kind of ultrasonic electronic cigarette working control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206472856U true CN206472856U (en) | 2017-09-08 |
Family
ID=59747156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720170911.8U Active CN206472856U (en) | 2017-02-24 | 2017-02-24 | A kind of ultrasonic electronic cigarette working control circuit |
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| Country | Link |
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| CN (1) | CN206472856U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108420116A (en) * | 2018-04-25 | 2018-08-21 | 深圳瀚星翔科技有限公司 | Tobacco tar ultrasonic atomizatio control circuit and tobacco tar ultrasonic atomizing device |
| CN109730361A (en) * | 2019-01-25 | 2019-05-10 | 深圳麦克韦尔股份有限公司 | A kind of electronic atomized equipment and its leakage monitoring method |
| CN110716490A (en) * | 2019-11-06 | 2020-01-21 | 高晓勇 | Multi-integrated sensor integrated board circuit |
| CN110881696A (en) * | 2018-08-20 | 2020-03-17 | 常州市派腾电子技术服务有限公司 | Control method of electronic cigarette, electronic cigarette and computer storage medium |
| CN114191663A (en) * | 2021-12-16 | 2022-03-18 | 珠海格力电器股份有限公司 | Atomizer control method, storage medium, processor and atomizer |
-
2017
- 2017-02-24 CN CN201720170911.8U patent/CN206472856U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108420116A (en) * | 2018-04-25 | 2018-08-21 | 深圳瀚星翔科技有限公司 | Tobacco tar ultrasonic atomizatio control circuit and tobacco tar ultrasonic atomizing device |
| CN110881696A (en) * | 2018-08-20 | 2020-03-17 | 常州市派腾电子技术服务有限公司 | Control method of electronic cigarette, electronic cigarette and computer storage medium |
| CN110881696B (en) * | 2018-08-20 | 2022-07-08 | 常州市派腾电子技术服务有限公司 | Control method of electronic cigarette, electronic cigarette and computer storage medium |
| CN109730361A (en) * | 2019-01-25 | 2019-05-10 | 深圳麦克韦尔股份有限公司 | A kind of electronic atomized equipment and its leakage monitoring method |
| CN110716490A (en) * | 2019-11-06 | 2020-01-21 | 高晓勇 | Multi-integrated sensor integrated board circuit |
| CN114191663A (en) * | 2021-12-16 | 2022-03-18 | 珠海格力电器股份有限公司 | Atomizer control method, storage medium, processor and atomizer |
| CN114191663B (en) * | 2021-12-16 | 2022-08-26 | 珠海格力电器股份有限公司 | Atomizer control method, storage medium, processor and atomizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Xiangyuan science and Technology Co., Ltd. Assignor: China Tobacco Hunan Industrial Co., Ltd. Contract record no.: 2017430000024 Denomination of utility model: A kind of ultrasonic electronic cigarette working control circuit Granted publication date: 20170908 License type: Common License Record date: 20171124 |