CN213663687U - Electronic atomizer with constant temperature control - Google Patents
Electronic atomizer with constant temperature control Download PDFInfo
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- CN213663687U CN213663687U CN202021994637.4U CN202021994637U CN213663687U CN 213663687 U CN213663687 U CN 213663687U CN 202021994637 U CN202021994637 U CN 202021994637U CN 213663687 U CN213663687 U CN 213663687U
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Abstract
The utility model discloses a thermostatic control's electronic atomizer, including atomization component and battery pack, atomization component includes heating element, battery pack includes the battery, control circuit includes the starting switch unit, a microcontroller, PWM voltage output the control unit, temperature-detecting unit, be equipped with PWM signal generation unit in the microcontroller, parameter memory cell, the parameter of parameter memory cell storage includes the operating temperature setting value, temperature-detecting unit is used for detecting heating element's real-time operating temperature, PWM signal generation unit adjusts the PWM duty cycle according to the difference of real-time operating temperature and operating temperature setting value, produce corresponding PWM signal and send PWM voltage output the control unit with output corresponding PWM voltage for heating element so that stabilize real-time operating temperature at the operating temperature setting value; the electronic atomizer has the advantages that the working temperature of the heating element can be accurately and stably controlled, and meanwhile, the voltage output is quickly cut off when the liquid supply of the heating element is insufficient, so that the electronic atomizer is prevented from being burnt.
Description
Technical Field
The utility model relates to an electronic atomizer's technical field, more specifically the utility model relates to a thermostatic control's electronic atomizer.
Background
The electronic atomizer is used for heating and atomizing electronic cigarette liquid or liquid medicine into vapor or aerosol for a user to absorb. Electronic atomizers typically include a heating assembly and a battery assembly for controlling the heating assembly and providing power to the heating assembly. The heating assembly comprises a heating element which can heat the liquid to be atomized to generate vapor or aerosol for a user to suck. The liquid to be atomized includes electronic cigarette liquid or liquid medicine with medicine dissolved.
Present most electronic atomizer, when the user every smoked a bite, open starting switch back, heating element generally heats the atomizing with constant power or constant voltage output's mode, heating element's operating temperature continuously rises, the vapor fog or the aerosol of production are inhomogeneous, unstable, in addition, when electronic atomizer lacks the liquid of treating the atomizing or supply liquid not enough, heating element's operating temperature sharply rises, lead to taking place dry combustion method, atomizing unit is inside to produce burnt flavor easily, burnt flavor, cause bad use experience for the user.
Disclosure of Invention
The utility model aims to overcome the technical defects and provide an electronic atomizer with thermostatic control.
The technical scheme of the utility model is realized like this: the utility model provides a thermostatic control's electronic atomizer, includes atomization component and battery pack, atomization component treats the heating element of atomizing liquid including being used for the heating, battery pack includes battery, control circuit includes starting switch unit, microcontroller, the PWM voltage output control unit who is connected with microcontroller electricity, temperature detecting unit, be equipped with PWM signal generation unit, parameter memory cell in the microcontroller, the parameter of parameter memory cell storage includes the operating temperature setting value, temperature detecting unit is used for detecting heating element's real-time operating temperature, PWM signal generation unit adjusts the PWM duty cycle according to the difference of real-time operating temperature and operating temperature setting value, produces corresponding PWM signal and sends for PWM voltage output control unit, PWM voltage output control unit outputs corresponding PWM voltage and gives heating element is so that the real-time operating temperature is stabilized the operating temperature setting value.
Preferably, the parameters stored in the parameter storage unit further include a constant power setting value, and a difference setting value between the real-time operating temperature and the operating temperature setting value, and the PWM signal generating unit is configured to generate a corresponding PWM signal to the PWM voltage output control unit according to the constant power setting value when the difference between the real-time operating temperature and the operating temperature setting value is greater than the difference setting value, so as to rapidly reach the real-time operating temperature to the operating temperature setting value.
Preferably, the parameters stored in the parameter storage unit further include a PWM duty set value and a set number of times that is lower than the PWM duty set value, and the PWM voltage output control unit is configured to turn off the voltage output when the PWM duty of the PWM signal is continuously lower than the PWM duty set value by the set number of times.
Preferably, the microcontroller comprises a chip MCU and a connection circuit thereof, the chip MCU comprises 24 pins, wherein the 1 st pin is connected to the first reference resistance voltage detection signal terminal RES-DET1, the 2 nd pin is connected to the second reference resistance voltage detection signal terminal RES-DET2, the 7 th pin is grounded, the 9 th pin is simultaneously connected to one ends of the resistor R1, the capacitor C1 and the capacitor C2, the other end of the resistor R1 is connected with a battery positive electrode BAT +, the other ends of the capacitor C1 and the capacitor C2 are simultaneously grounded, a 13 th pin is connected with a blue indicator light signal end RGB-B, a 14 th pin is connected with a green indicator light signal end RGB-G, a 15 th pin is connected with a red indicator light signal end RGB-R, a 17 th pin is connected with a microphone signal end Mic, an 18 th pin is connected with a resistance value detection enabling signal end Res-DET-EN, and a 24 th pin is connected with a chopping wave output control signal end PWM.
Preferably, the PWM voltage output control unit includes a MOS transistor Q3 and a transistor Q2B, the S pole of the MOS transistor Q3 is connected to the battery positive electrode BAT +, the D pole is used as the output voltage signal terminal PWM-OUT, the G pole is connected to one end of a resistor R12, the other end of the resistor R12 is simultaneously connected to one end of a resistor R11 and the C pole of the transistor Q2B, the other end of the resistor R11 is connected to the battery positive electrode BAT +, the B pole of the transistor Q2B is connected to one end of a resistor R13, the E pole is simultaneously grounded and connected to one end of a resistor R14, and the other end of the resistor R13 and the other end of the resistor R14 are simultaneously connected to the chopper output control signal terminal PWM.
Preferably, the temperature detecting unit includes a resistance detecting unit, the resistance detecting unit includes a MOS transistor Q1 and a transistor Q2A, an S pole of the MOS transistor Q1 is connected to the battery positive electrode BAT +, a D pole is connected to one ends of resistors R5 and R7, a G pole is connected to one end of a resistor R2 and a C pole of the transistor Q2A, the other end of the resistor R2 is connected to the battery positive electrode BAT +, a B pole of the transistor Q2A is connected to one end of a resistor R3, the other end of the resistor R3 is connected to a resistance detection enable signal end Res-DET-EN, an E pole of the transistor Q2A is grounded, the other end of the resistor R5 is connected to a first reference resistor voltage detection signal end Res-DET1, one end of a resistor R6 and one end of a capacitor C4, the resistor R7 is connected to an output voltage signal end PWM-OUT and one end of a resistor R8, and the other end of the resistor R42 is connected to a second reference resistor Res 2 and a resistor 46r 9-DET 9 The other ends of the resistor R6, the resistor R9, the capacitor C4 and the capacitor C5 are simultaneously grounded.
Preferably, the start switch unit includes a microphone MIC, the microphone MIC includes 3 pins, wherein the 1 st pin is simultaneously connected to one end of a resistor R15 and one end of a capacitor C6, the other end of the resistor R15 is connected to a battery positive electrode BAT +, the 2 nd pin and the other end of the capacitor C6 are simultaneously grounded, and the 3 rd pin is connected to a microphone signal terminal MIC.
The utility model has the advantages as follows: the utility model discloses a thermostatic control's electronic atomizer can accurately control heating element's operating temperature steadily, makes electronic atomizer can produce even, stable and homothermal vapour fog or aerosol fast, and turn-off voltage output fast when heating element supplies liquid not enough simultaneously prevents that electronic atomizer from taking place to burn futilely, promotes user's use and experiences.
Drawings
Fig. 1 is a block diagram of the electronic atomizer control circuit according to the present invention;
fig. 2 is a circuit diagram of a microcontroller according to the present invention;
fig. 3 is a circuit diagram of a PWM voltage output control unit of the present invention;
fig. 4 is a circuit diagram of the resistance value detection unit of the present invention;
fig. 5 is a circuit diagram of the starting switch unit of the present invention;
fig. 6 is a graph showing the variation of the PWM duty ratio when the electronic atomizer of the present invention is operated;
fig. 7 is a graph showing the change of the heating temperature when the electronic atomizer of the present invention is in operation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example (b):
the utility model discloses thermostatic control's electronic atomizer for the heating treats atomizing liquid so that produce atomizing steam or aerosol, supplies the user to aspirate.
As shown in fig. 1, the electronic atomizer of the present embodiment includes a heating assembly and a battery assembly, the heating assembly is provided with a heating element 1 for heating a liquid to be atomized, the heating element 1 is a thermistor with a positive temperature coefficient, the battery assembly is provided with a battery 2 and a control circuit, the control circuit includes a start switch unit 3, a microcontroller 4, a PWM voltage output control unit 5 electrically connected with the microcontroller 4, and a temperature detection unit (not shown in the figure), and the temperature detection unit of the present embodiment includes a resistance value detection unit 6 and a temperature conversion unit 41 arranged in the microcontroller 4. The microcontroller 4 is also provided with a PWM signal generating unit 42, a parameter storage unit 43, and a preset computer program for automatic control, the PWM signal generating unit 42 outputs a PWM signal to the PWM voltage output control unit 5, the PWM voltage output control unit 5 outputs a PWM voltage to the heating element 1 according to the PWM signal, the resistance value detecting unit 6 is used for detecting the resistance value of the heating element 1, and the temperature converting unit 41 converts the detected resistance value into a real-time working temperature. The parameters stored in the parameter storage unit 43 include a working temperature set value, the temperature detection unit is used for detecting the real-time working temperature of the heating element, the PWM signal generation unit 42 adjusts the PWM duty ratio according to the difference value between the real-time working temperature and the working temperature set value, generates a corresponding PWM signal and sends the PWM signal to the PWM voltage output control unit 5, and the PWM voltage output control unit 5 outputs a corresponding PWM voltage to the heating element 1 for constant temperature control, that is, the real-time working temperature is stabilized at the working temperature set value.
The parameters stored in the parameter storage unit 43 further include a constant power setting value, and a difference setting value between the real-time operating temperature and the operating temperature setting value, and the PWM signal generating unit 42 is configured such that, when the difference between the real-time operating temperature and the operating temperature setting value is greater than the difference setting value, the PWM signal generating unit 42 generates a corresponding PWM signal to the PWM voltage output control unit 5 according to the constant power setting value, so as to rapidly reach the real-time operating temperature to the operating temperature setting value.
The parameters stored in the parameter storage unit 43 further include a PWM duty set value, and the number of times of setting that is lower than the PWM duty set value, and the PWM voltage output control unit 5 is configured such that the PWM voltage output control unit 5 turns off the voltage output when the PWM duty of the PWM signal is continuously lower than the PWM duty set value by the number of times of setting.
As shown in fig. 2, the microcontroller 4 of the present embodiment includes a chip MCU and its connection circuit, the chip MCU includes 24 pins, the 1 st pin is connected with a first reference resistor voltage detection signal end RES-DET1, the 2 nd pin is connected with a second reference resistor voltage detection signal end RES-DET2, the 7 th pin is grounded, the 9 th pin is simultaneously connected with one ends of a resistor R1, a capacitor C1 and a capacitor C2, the other end of the resistor R1 is connected with a battery positive electrode BAT +, the other ends of a capacitor C1 and a capacitor C2 are simultaneously grounded, the 13 th pin is connected with a blue indicator light signal end RGB-B, the 14 th pin is connected with a green indicator light signal end RGB-G, the 15 th pin is connected with a red indicator light signal end RGB-R, the 17 th pin is connected with a microphone signal end Mic, the 18 th pin is connected with a resistance value detection enabling signal end Res-DET-EN, and the 24 th pin is connected with a chopping output control signal end PWM.
As shown in fig. 3, the PWM voltage output control unit of this embodiment includes a MOS transistor Q3 and a transistor Q2B, the S-pole of the MOS transistor Q3 is connected to the battery positive electrode BAT +, the D-pole is used as the output voltage signal terminal PWM-OUT, the G-pole is connected to one end of a resistor R12, the other end of the resistor R12 is simultaneously connected to one end of a resistor R11 and the C-pole of the transistor Q2B, the other end of the resistor R11 is connected to the battery positive electrode BAT +, the B-pole of the transistor Q2B is connected to one end of a resistor R13, the E-pole is simultaneously grounded and connected to one end of a resistor R14, and the other end of the resistor R13 and the other end of the resistor R14 are.
As shown in fig. 4, the resistance detection unit of this embodiment includes a MOS transistor Q1 and a transistor Q2A, the S-pole of the MOS transistor Q1 is connected to the battery positive electrode BAT +, the D-pole is connected to one ends of resistors R5 and R7, the G-pole is connected to one end of the resistor R2 and the C-pole of the transistor Q2A, the other end of the resistor R2 is connected to the battery positive electrode BAT +, the B-pole of the transistor Q2A is connected to one end of a resistor R3, the other end of the resistor R3 is connected to a resistance detection enable signal end Res-DET-EN, the E-pole of the transistor Q2A is grounded, the other end of the resistor R5 is connected to one end of a first reference resistor voltage detection signal end Res-DET1, one end of a resistor R6, one end of a capacitor C4, the resistor R7 is connected to one ends of a resistor R8, the other ends of the resistor R8 is connected to a second reference resistor voltage detection signal end Res-DET2 and one end of a, One end of the capacitor C5, the other ends of the resistor R6, the resistor R9, the capacitor C4 and the capacitor C5 are simultaneously grounded.
As shown in fig. 5, the start switch unit of the present embodiment includes a microphone MIC, where the microphone MIC includes 3 pins, a 1 st pin is simultaneously connected to one end of a resistor R15 and one end of a capacitor C6, the other end of a resistor R15 is connected to a battery positive electrode BAT +, the other end of a 2 nd pin and the other end of a capacitor C6 are simultaneously grounded, and a 3 rd pin is connected to a microphone signal terminal MIC.
As shown in fig. 6 and 7, the working principle of the electronic atomizer with thermostatic control according to the present embodiment is as follows:
when the electronic atomizer is sucked, the starting switch 3 senses the sucked air flow and turns on the control circuit, so that the PWM voltage output control unit 5 outputs voltage to the heating element 1, and the heating element 1 starts to work. At this time, the heating element 1 is at a low temperature, and in order to atomize the liquid to be atomized as quickly as possible and enable the user to suck the vapor or aerosol, the heating element of the electronic atomizer is enabled to be at the initial temperature T0Quickly heating to a working temperature set value T1I.e., stage t1 of fig. 6 and 7. In the stage t1, the heating element 1 is heated in a mode of large power and constant power output, and the power calculation formula P is equal to U2To obtain a larger constant power P, a higher stable voltage U needs to be output at this time, and the battery voltage of the electronic atomizer is more fixed, in this embodiment, the PWM signal generating unit 42 adjusts a higher PWM duty ratio to perform PWM modulation output on the battery voltage (as shown in the PWM duty curve at stage t1 in fig. 6), and the PWM voltage output control unit 5 outputs a higher PWM voltage to the heating element 1 accordingly, so that the heating element 1 can be rapidly heated up to the working temperature setting value (as shown in the temperature rising curve at stage t1 in fig. 7).
When the real-time working temperature reaches the set working temperature value T1Immediately thereafter, the PWM duty ratio is decreased by the PWM signal generating unit 42 to decrease the output voltage, i.e. the PWM duty ratio curve rapidly decreases at the beginning of the T2 phase shown in fig. 6, the output power is decreased to the heating element 1 at the beginning of the T2 phase to avoid the real-time operating temperature from increasing greatly, and then the real-time operating temperature is compared with the set value T of the operating temperature1Comparing and maintaining the working temperature of the heating element 1 at the working temperature set value T1I.e. a curve in which the temperature is constantly maintained as in the period t2 in fig. 7.
When a special situation occurs, i.e. the heating element 1 is out of liquid to be atomized or is in short supply, the heating element 1 is about to occurThe working temperature of the furnace inevitably tends to rise rapidly due to dry burning, and at the moment, in order to avoid the rapid rise of the working temperature, the output power needs to be reduced rapidly, and the formula P is U according to the power calculation formula2The output voltage U of the PWM voltage output control unit 5 needs to be rapidly decreased, and the output voltage U is adjusted by the duty ratio of the PWM in the PWM signal generation unit 42, so that the duty ratio of the PWM needs to be continuously decreased, as shown by the curve of the t3 stage shown in fig. 6. When the duty ratio of the PWM is lower than the set duty ratio, the output power is reduced to be low, the continuous rising trend of the working temperature cannot be continuously prevented, and the dry-burning state occurs, so that the continuous reduction of the PWM duty ratio and the continuous reduction of the output power are unnecessary, and the output voltage of the electronic atomizer is turned off at the moment to prevent the dry-burning from further occurring. In order to avoid misjudgment caused by occasional duty ratio reduction, the output voltage of the electronic atomizer is turned off only when the duty ratio of the PWM is required to be detected to be continuously lower than the set duty ratio for the set times.
The above description is only for the preferred embodiment of the present invention, and the above specific embodiments are not intended to limit the present invention. Within the scope of the technical idea of the present invention, various modifications and alterations can be made, and any person skilled in the art can make modifications, amendments or equivalent replacements according to the above description, all belonging to the protection scope of the present invention.
Claims (7)
1. The utility model provides a thermostatic control's electronic atomizer, its characterized in that, includes atomization component and battery pack, atomization component treats the heating element of atomizing liquid including being used for the heating, battery pack includes battery, control circuit includes starting switch unit, microcontroller, the PWM voltage output control unit, the temperature detection unit that are connected with microcontroller electricity, be equipped with PWM signal generation unit, parameter memory cell in the microcontroller, the parameter of parameter memory cell storage includes the operating temperature setting value, the temperature detection unit is used for detecting heating element's real-time operating temperature, PWM signal generation unit adjusts the PWM duty cycle according to the difference of real-time operating temperature and operating temperature setting value, produces corresponding PWM signal and sends for PWM voltage output control unit, PWM voltage output control unit outputs corresponding PWM voltage and gives heating element is so that be in with real-time operating temperature stable the operating temperature work And making a temperature set value.
2. The thermostatically controlled electronic atomizer according to claim 1, wherein the parameters stored in the parameter storage unit further include a constant power setting value, a difference setting value between a real-time operating temperature and an operating temperature setting value, and the PWM signal generating unit is configured to generate a corresponding PWM signal to the PWM voltage output control unit according to the constant power setting value when the difference between the real-time operating temperature and the operating temperature setting value is greater than the setting value, so as to rapidly reach the real-time operating temperature to the operating temperature setting value.
3. The thermostatically controlled electronic atomizer according to claim 1, wherein the parameters stored in the parameter storage unit further include a PWM duty set value, a set number of times that is lower than the PWM duty set value, and the PWM voltage output control unit is configured to turn off the voltage output when the PWM duty of the PWM signal is continuously lower than the PWM duty set value by the set number of times.
4. The thermostatically controlled electronic atomizer as claimed in claim 1, characterized in that the microcontroller comprises a chip MCU and its connection circuit, the chip MCU comprising 24 pins, of which pin 1 is connected to a first reference resistor voltage detection signal terminal RES-DET1, pin 2 is connected to a second reference resistor voltage detection signal terminal RES-DET2, pin 7 is grounded, pin 9 is simultaneously connected to one end of a resistor R1, a capacitor C1 and a capacitor C2, the other end of the resistor R1 is connected to a battery positive electrode BAT +, the other ends of the capacitor C1 and the capacitor C2 are simultaneously grounded, pin 13 is connected to a blue indicator light signal terminal RGB-B, pin 14 is connected to a green indicator light signal terminal RGB-G, pin 15 is connected to a red indicator light signal terminal RGB-R, pin 17 is connected to a microphone signal terminal Mic, pin 18 is connected to a resistance detection enable signal terminal RES-DET-EN, and the 24 th pin is connected with a chopping output control signal end PWM.
5. The electronic atomizer according to claim 1, wherein the PWM voltage output control unit comprises a MOS transistor Q3 and a transistor Q2B, the MOS transistor Q3 has its S-pole connected to the battery positive electrode BAT +, its D-pole serving as the output voltage signal terminal PWM-OUT, its G-pole connected to one end of a resistor R12, the resistor R12 has its other end connected to one end of a resistor R11 and the C-pole of a transistor Q2B, the resistor R11 has its other end connected to the battery positive electrode BAT +, the transistor Q2B has its B-pole connected to one end of a resistor R13, its E-pole connected to ground and one end of a resistor R14, and the resistor R13 and the resistor R14 have their other ends connected to the chopper output control signal terminal PWM.
6. The thermostatically controlled electronic atomizer according to claim 1, characterized in that the temperature detecting unit includes a resistance detecting unit, the resistance detecting unit includes a MOS transistor Q1 and a transistor Q2A, the S pole of the MOS transistor Q1 is connected to the battery positive electrode BAT +, the D pole is connected to one ends of resistors R5 and R7, the G pole is connected to one end of a resistor R2 and the C pole of the transistor Q2A, the other end of the resistor R2 is connected to the battery positive electrode BAT +, the B pole of the transistor Q2A is connected to one end of a resistor R3, the other end of the resistor R3 is connected to a resistance detection enable signal terminal Res-DET-EN, the E pole of the transistor Q2A is grounded, the other end of the resistor R5 is connected to one end of a first reference resistor voltage detection signal terminal Res-DET1 and one end of a resistor R6, one end of a capacitor C4, the resistor R7 is connected to one end of an output voltage signal terminal PWM-OUT and one end of a resistor R8, the other end of the resistor R8 is simultaneously connected with one end of a second reference resistor voltage detection signal end RES-DET2 and a resistor R9 and one end of a capacitor C5, and the other ends of the resistor R6, the resistor R9, the capacitor C4 and the capacitor C5 are simultaneously grounded.
7. The thermostatically controlled electronic atomizer as claimed in claim 1, characterized in that the start switch unit comprises a microphone MIC, which comprises 3 pins, wherein pin 1 is connected to one end of a resistor R15 and one end of a capacitor C6, the other end of the resistor R15 is connected to a battery positive electrode BAT +, pin 2 and the other end of the capacitor C6 are connected to ground, and pin 3 is connected to a microphone signal terminal MIC.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022052611A1 (en) * | 2020-09-11 | 2022-03-17 | 惠州市新泓威科技有限公司 | Electronic atomiser with constant temperature control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022052611A1 (en) * | 2020-09-11 | 2022-03-17 | 惠州市新泓威科技有限公司 | Electronic atomiser with constant temperature control |
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