Atomization driving circuit and atomizer
By introducing filter circuits and switch control circuits into the atomization drive circuit, the problems of signal instability and low frequency control efficiency in the prior art are solved, and higher signal detection accuracy and frequency adjustment efficiency are achieved, thereby improving the atomization effect .
Patent Information
- Application Number
- CN202421055660.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The driving circuits of existing atomizers lack filtering functions, resulting in unstable detection signals, low detection accuracy, low frequency control efficiency, and affecting the atomization effect.
A atomization driving circuit including atomization power supply circuit, switching control circuit, drain circuit and filter circuit is designed to filter clutter through the filter circuit to improve signal stability and detection accuracy; the switching control circuit is based on the signal of the main controller Adjust the working frequency; the drain circuit improves switch switching efficiency.
It improves signal detection accuracy and frequency control efficiency, ensures the stable operation of the atomizer, and improves the atomization effect.
Smart Images
Figure CN222299959U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of atomizers, in particular to an atomizer drive circuit and an atomizer. Background Art
[0002] Atomizer is a device that atomizes the test solution. When the atomizer is working, the atomizer drive circuit outputs a driving power supply and a driving frequency that matches the resonant frequency of the atomizer to drive the metal atomizer in the atomizer to vibrate. There are tiny holes in the center of the metal atomizer, which hit the wet cotton strip, causing the liquid to spray out from the hole to form atomized particles.
[0003] At present, the atomization drive circuit of some atomizers includes a MOS tube, a power supply, an inductor and a resistor. Among them, the signal output pin of the main controller is connected to the driving end of the MOS tube through the first resistor, one end of the MOS tube is connected to the atomizer, and the other end is connected to the detection pin of the main controller and grounded through the resistor. However, the function of this circuit is relatively simple, and no corresponding filtering function is set, so that the signal detected by the detection pin is unstable, resulting in low detection accuracy, making signal detection prone to errors, affecting the frequency control work, and thus affecting the atomization control work. At the same time, the switching efficiency of the MOS tube of this circuit is low, and the MOS tube switch work cannot be quickly controlled, which greatly affects the efficiency of atomization control. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an atomization driving circuit and an atomizer, which can improve the signal detection accuracy and frequency control efficiency, thereby improving the atomization effect.
[0005] In order to solve the above technical problems, the utility model provides an atomization driving circuit, including an atomization power supply circuit, a switch control circuit, a discharge circuit and a filter circuit, wherein the atomization power supply circuit is respectively connected to the first end of the switch control circuit and the atomizer; the second end of the switch control circuit is connected to the filter circuit, and the detection signal end of the filter circuit is connected to the main controller; the driving end of the switch control circuit is connected to the main controller, and the driving end of the switch control circuit is also connected to the main controller through the discharge circuit, and the switch control circuit is used to control the filter circuit to feed back the detection signal to the main controller according to the control signal of the main controller, so that the main controller adjusts the operating frequency of the control signal according to the detection signal.
[0006] As an improvement of the above solution, the atomization power supply circuit includes an inductor and a first capacitor; one end of the inductor is connected to the power supply, the other end of the inductor is connected to the first end of the switch control circuit, and the other end of the inductor is also grounded via the first capacitor and the atomizer in sequence.
[0007] As an improvement of the above scheme, the switch control circuit includes a switch tube, a first resistor, a second resistor, a third resistor and a fourth resistor; the driving end of the switch tube is connected to the control signal pin of the main controller through the first resistor and the discharge circuit respectively, and the driving end of the switch tube is also grounded through the second resistor and the third resistor in sequence; the first end of the switch tube is connected to the connection end between the inductor and the first capacitor, the second end of the switch tube is grounded through the fourth resistor, and the second end of the switch tube is also connected to the connection end between the second resistor and the third resistor.
[0008] As an improvement of the above solution, the discharge circuit includes a discharge module, and the discharge module is used to discharge the discharge current when the switch tube is turned off.
[0009] As an improvement of the above solution, the filtering circuit includes at least one group of RC filtering circuits.
[0010] As an improvement of the above scheme, the RC filter circuit includes a filter resistor and a filter capacitor, one end of the filter resistor is connected to the second end of the switch control circuit, the other end of the filter resistor is grounded through the filter capacitor, and the other end of the filter resistor serves as a detection signal end and is connected to the signal detection pin of the main controller.
[0011] As an improvement of the above solution, the discharge module is a diode, the positive terminal of the diode is connected to the driving end of the switch tube, and the negative terminal of the diode is connected to the control signal pin of the main controller.
[0012] As an improvement of the above solution, the switch tube is a MOS tube.
[0013] As an improvement of the above solution, the atomization power supply circuit further includes an electrolytic capacitor, one end of the electrolytic capacitor is respectively connected to the power supply and one end of the inductor, and the other end of the electrolytic capacitor is grounded.
[0014] The present invention also provides an atomizer, comprising a machine body and the atomizer drive circuit described above, wherein the atomizer drive circuit is installed in the machine body.
[0015] The beneficial effects of implementing the utility model are:
[0016] The utility model can filter the detection signal through the filter circuit to filter the clutter, improve the signal stability and signal detection accuracy, and thus improve the signal frequency control accuracy.
[0017] At the same time, the switch control circuit is set to control the conduction of the filter circuit according to the current control signal to feed back the detection signal to the main controller, so that the main controller adjusts the working frequency of the control signal according to the detection signal until the working frequency of the control signal is consistent with the resonant frequency of the atomizer, thereby driving the atomizer to work stably and achieve a good atomization effect.
[0018] Secondly, the setting of the discharge circuit and the control signal with high driving capability can improve the switching efficiency of the switch control circuit, thereby improving the frequency adjustment efficiency, and then improving the atomization control efficiency, so that the atomizer can work stably in the best state as soon as possible. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a logical structure diagram of the atomization drive circuit of the utility model;
[0020] Figure 2 It is a circuit diagram of the atomization driving circuit of the utility model. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.
[0022] like Figure 1 As shown, a specific embodiment of the utility model provides an atomization drive circuit, including an atomization power supply circuit 1, a switch control circuit 2, a discharge circuit 3 and a filter circuit 4. The atomization power supply circuit 1 is connected to the first end of the switch control circuit 2 and the atomizer 5 respectively, and the atomization power supply circuit 1 is used to adapt the power supply to the atomizer 5. The second end of the switch control circuit 2 is connected to the filter circuit 4, and the detection signal end of the filter circuit 4 is connected to the main controller 6; the filter circuit 4 can filter the current detection signal to filter out clutter, improve signal stability and signal detection accuracy, and thus improve signal frequency control accuracy.
[0023] The driving end of the switch control circuit 2 is connected to the main controller 6, and the driving end of the switch control circuit 2 is also connected to the main controller 6 through the discharge circuit 3. When working, the main controller 6 sends a control signal of the initial frequency to drive the switch control circuit 2 to work, the switch control circuit 2 turns on the loop of the filter circuit 4, the filter circuit 4 filters the current signal and feeds it back to the main controller 6, the main controller 6 adjusts the working frequency of the output control signal according to the current detection signal, until the current detection signal meets the preset signal, the working frequency of the control signal output by the main controller 6 is consistent with the resonant frequency of the atomizer 5, at this time, the atomizer 5 works in the best state of vibration atomization, and the atomization effect is good.
[0024] Secondly, the discharge circuit 3 is set to quickly discharge the discharge current when the switch tube in the switch control circuit 2 is turned off, so as to improve the shutdown efficiency. The main controller 6 with high driving capability outputs a control signal to quickly drive the switch tube to turn on, so as to improve the start-up efficiency, thereby improving the switch switching efficiency and frequency adjustment efficiency of the switch control circuit 2, and then improving the atomization control efficiency, so that the atomizer 5 can work stably in the best state as soon as possible, meeting the user's convenient use needs.
[0025] The present invention is further described in detail below in conjunction with a specific circuit diagram:
[0026] like Figure 2 As shown, Figure 2 The circuit structure diagram of the atomization drive circuit of the utility model is shown, and the atomization power supply circuit 1, the switch control circuit 2, the discharge circuit 3 and the filter circuit 4 are described below respectively:
[0027] 1. Atomization power supply circuit 1
[0028] The atomizer power supply circuit 1 includes an inductor L1 and a first capacitor C4; one end of the inductor L1 is connected to the power supply 36V, the other end of the inductor L1 is connected to the first end of the switch control circuit 2, and the other end of the inductor L1 is also grounded via the first capacitor C4 and the atomizer Y1 in sequence. The atomizer power supply circuit 1 also includes an electrolytic capacitor EC1, one end of the electrolytic capacitor EC1 is respectively connected to the power supply 36V and one end of the inductor L1, and the other end of the electrolytic capacitor EC1 is grounded.
[0029] The input power signal is filtered by the provided electrolytic capacitor EC1, the inductor L1 and the capacitor C4 to filter out the cluttered signal and improve the signal stability, thereby stably driving the atomizer Y1 to work.
[0030] 2. Switch control circuit 2
[0031] The switch control circuit 2 includes a switch tube Q1, a first resistor R3, a second resistor R4, a third resistor R7 and a fourth resistor R8; the driving end of the switch tube Q1 is connected to the control signal pin of the main controller through the first resistor R3 and the discharge circuit 3 respectively, and the driving end of the switch tube Q1 is also grounded through the second resistor R4 and the third resistor R7 in sequence; the first end of the switch tube Q1 is connected to the connection end between the inductor L1 and the first capacitor C4, the second end of the switch tube Q1 is grounded through the fourth resistor R8, and the second end of the switch tube Q1 is also connected to the connection end between the second resistor R4 and the third resistor R7. Wherein, the switch tube Q1 is preferably a high-power MOS tube, specifically an NMOS tube.
[0032] During operation, the main controller outputs a PWM control signal to control the NMOS tube to conduct quickly, so that the filter circuit 4 is in a loop conduction state. At this time, the current signal of the filter circuit 4 is detected and fed back to the main controller, so that the main controller adjusts the operating frequency of the PWM control signal according to the current detection signal and outputs it to re-drive the NMOS tube to conduct. The operating frequency is adjusted cyclically in the above manner until it is consistent with the resonant frequency of the atomizer Y1, so that the atomizer Y1 can work in the best state of atomization.
[0033] 3. Discharge circuit 3
[0034] The discharge circuit 3 includes a discharge module, which is a diode D1, the positive terminal of the diode D1 is connected to the driving end of the switch tube Q1, and the negative terminal of the diode D1 is connected to the control signal pin of the main controller. When the control signal pin of the main controller is at a low level, the NMOS tube is turned off, and the discharge current of the capacitor of the NMOS tube is quickly discharged through the forward-conducting discharge module, without the need to discharge the discharge current through a resistor as in the existing circuit to affect the shutdown efficiency.
[0035] The discharge circuit 3 provided in this embodiment can quickly discharge the discharge current when the switch tube Q1 is turned off, so as to improve the turn-off efficiency. The main controller with high driving capability outputs a control signal to quickly drive the switch tube Q1 to turn on, so as to improve the turn-on efficiency, thereby improving the switch switching efficiency and frequency adjustment efficiency of the switch control circuit 2, and further improving the atomization control efficiency, so that the atomizer Y1 can work stably in the best state as soon as possible, meeting the user's convenient use needs.
[0036] Preferably, the model of the main controller is BS45F3832, but not limited thereto.
[0037] 4. Filter circuit 4
[0038] The filter circuit 4 includes two groups of RC filter circuits 41. The RC filter circuit 41 includes a filter resistor (such as R5 and R6) and a filter capacitor (such as C5 and C6), one end of the filter resistor is connected to the second end of the switch control circuit 2, the other end of the filter resistor is grounded through the filter capacitor, and the other end of the filter resistor is used as a detection signal end and connected to the signal detection pin of the main controller.
[0039] By setting two groups of RC filter circuits 41 to filter the current signal, clutter is filtered out, signal stability and signal detection accuracy are improved, thereby improving signal frequency control accuracy.
[0040] The present invention also provides an atomizer, comprising a machine body and the atomizer drive circuit described above, wherein the atomizer drive circuit is installed in the machine body.
[0041] In summary, the utility model can filter the detection signal through the filter circuit provided to filter out clutter, improve signal stability and signal detection accuracy, and thus improve signal frequency control accuracy.
[0042] At the same time, the switch control circuit is set to control the conduction of the filter circuit according to the current control signal to feed back the detection signal to the main controller, so that the main controller adjusts the working frequency of the control signal according to the detection signal until the working frequency of the control signal is consistent with the resonant frequency of the atomizer, thereby driving the atomizer to work stably and achieve a good atomization effect.
[0043] Secondly, the setting of the discharge circuit and the control signal with high driving capability can improve the switching efficiency of the switch control circuit, thereby improving the frequency adjustment efficiency, and then improving the atomization control efficiency, so that the atomizer can work stably in the best state as soon as possible.
[0044] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.
Claims
1. An atomization driving circuit, characterized in that: It includes an atomization power supply circuit, a switch control circuit, a discharge circuit and a filter circuit, wherein the atomization power supply circuit is connected to the first end of the switch control circuit and the atomizer respectively; The second end of the switch control circuit is connected to the filter circuit, and the detection signal end of the filter circuit is connected to the main controller; The driving end of the switch control circuit is connected to the main controller, and the driving end of the switch control circuit is also connected to the main controller through a discharge circuit. The switch control circuit is used to control the filter circuit to feed back a detection signal to the main controller according to a control signal of the main controller, so that the main controller adjusts the operating frequency of the control signal according to the detection signal.
2. The atomization driving circuit according to claim 1, characterized in that: The atomization power supply circuit includes an inductor and a first capacitor; One end of the inductor is connected to a power supply, the other end of the inductor is connected to a first end of the switch control circuit, and the other end of the inductor is also grounded via the first capacitor and the atomizer in sequence.
3. The atomization driving circuit according to claim 2, characterized in that: The switch control circuit includes a switch tube, a first resistor, a second resistor, a third resistor and a fourth resistor; The driving end of the switch tube is connected to the control signal pin of the main controller through the first resistor and the discharge circuit respectively, and the driving end of the switch tube is also grounded through the second resistor and the third resistor in sequence; The first end of the switch tube is connected to the connection end between the inductor and the first capacitor, the second end of the switch tube is grounded through the fourth resistor, and the second end of the switch tube is also connected to the connection end between the second resistor and the third resistor.
4. The atomization driving circuit according to claim 3, characterized in that: The discharge circuit includes a discharge module, and the discharge module is used to discharge the discharge current when the switch tube is turned off.
5. The atomization driving circuit according to claim 1 or 3, characterized in that: The filtering circuit includes at least one set of RC filtering circuits.
6. The atomization driving circuit according to claim 5, characterized in that: The RC filter circuit includes a filter resistor and a filter capacitor, one end of the filter resistor is connected to the second end of the switch control circuit, the other end of the filter resistor is grounded through the filter capacitor, and the other end of the filter resistor serves as a detection signal end and is connected to the signal detection pin of the main controller.
7. The atomization driving circuit according to claim 4, characterized in that: The discharge module is a diode, the positive terminal of the diode is connected to the driving end of the switch tube, and the negative terminal of the diode is connected to the control signal pin of the main controller.
8. The atomization drive circuit according to claim 3, 4 or 7, characterized in that: The switch tube is a MOS tube.
9. The atomization driving circuit according to claim 2, characterized in that: The atomization power supply circuit also includes an electrolytic capacitor, one end of the electrolytic capacitor is respectively connected to the power supply and one end of the inductor, and the other end of the electrolytic capacitor is grounded.
10. An atomizer, characterized in that: It comprises a machine body and an atomization drive circuit as claimed in any one of claims 1 to 9, wherein the atomization drive circuit is installed in the machine body.