CN107961939B - Liquid atomization circuit and its device - Google Patents

Abstract

A liquid atomization circuit and device. The liquid atomization circuit is suitable for controlling a liquid atomization spray module. The liquid atomization circuit includes a drive unit and a control unit. The driving unit is used to output a driving voltage to directly drive the spray module. The control unit is coupled to the driving unit, and the control unit is used for controlling the driving unit to output a driving voltage. Wherein, the spray module has a first pin and a second pin, the first pin is coupled to the drive unit, the second pin is coupled to the control unit, and the control unit outputs a preset voltage to the spray module.

Description

Liquid atomization circuit and its device

technical field

The invention relates to a liquid atomization circuit and its device, in particular to a liquid atomization circuit and its device for improving spray efficiency.

Background technique

Liquid atomization devices have been widely used in various fields, such as cooling, humidification, disinfection, dust suppression, and medical applications. Among them, for example, when used in inhalation medical equipment, the particle size of the drug produced by it must be below 3-5 μm to ensure that the drug can effectively reach the alveoli and be directly absorbed by the human body, so as to improve the efficiency of the drug. Another example is that it is used in agriculture for the purpose of cooling greenhouses. The optimum fog particle diameter is 17 μm. The concentration of micro fog caused by this kind of fog particles is the most moderate, and it has the effect of shading, thus greatly reducing the need for crops to irrigate .

At present, the vibrating liquid atomization device drives the piezoelectric sheet with a frequency to form sound wave oscillation to generate micro-mist particles. Wherein, the atomizing device of the liquid atomizing device includes, for example, a piezoelectric sheet. The piezoelectric sheet has a positive electrode and a negative electrode, and the piezoelectric sheet is often contacted or immersed in a liquid to atomize the liquid. However, the positive and negative electrodes of the piezoelectric sheet often develop a patina or adhere to electrolytic substances due to contact or immersion in liquid. The piezoelectric sheet that produces verdigris or adheres to the electrolytic substance will affect the use of the liquid atomization device. The service life of the liquid atomizing device is thus reduced.

Furthermore, in the known technology of "the transformer provides the driving voltage to the piezoelectric sheet", relatively large power is often consumed. For example, the transformer needs 350 mA of power to drive the piezoelectric sheet at a frequency to form a sound wave oscillation. Therefore, the use of the liquid atomizing device is inconvenient.

Contents of the invention

The present invention is to provide a liquid atomization circuit and its device, which is a circuit design for respectively receiving the drive voltage and the preset voltage through the two pins of the spray module, so that the deformation of the spray module is increased, thereby improving the use of the spray module convenience.

An embodiment of the present invention provides a liquid atomization circuit, which is suitable for controlling a liquid atomization spray module. The liquid atomizing circuit includes a drive unit and a control unit. The driving unit is used to output a driving voltage to directly drive the spray module. The control unit is coupled to the driving unit, and the control unit is used for controlling the driving unit to output a driving voltage. Wherein, the spray module has a first pin and a second pin. The first pin is coupled to the driving unit, and the second pin is coupled to the control unit. The control unit outputs a preset voltage to the spray module.

According to a preferred embodiment of the liquid atomizing circuit of the present invention, the driving unit includes a first switch, a second switch and a first capacitor. The control end of the first switch is coupled to the control unit, the first end of the first switch is coupled to a ground end, the second end of the first switch is coupled to a first inductor and a first unidirectional conduction element; The control terminal is coupled to the control unit, the first terminal of the second switch is coupled to the ground terminal, the second terminal of the second switch is coupled to a second inductor and the first pin of the spray module; the first capacitor is coupled to the first unit Between the conduction component, the second inductor and the ground terminal; wherein, the anode of the first unidirectional conduction component is coupled to the first inductor, and the cathode of the first unidirectional conduction component is coupled to the second inductor and the first capacitor.

According to a preferred embodiment of the liquid atomizing circuit of the present invention, the driving voltage is a pulsating DC voltage, the waveform of the driving voltage is a sine wave, a triangular wave or a square wave, and the preset voltage is a positive potential voltage greater than zero voltage.

According to a preferred embodiment of the liquid atomization circuit of the present invention, when the driving voltage is greater than the preset voltage, the spray module performs a forward electrolytic reaction, and when the driving voltage is lower than the preset voltage, the spray module performs a forward electrolytic reaction, The positive electrolytic reaction refers to the electrolytic reaction between the first pole and the second pole of the spray module and the liquid, the anions dissociated from the liquid swim to the first pole, and the cations dissociated from the liquid swim to the second pole, and The reverse electrolysis reaction refers to the electrolysis reaction between the first pole and the second pole of the spray module and the liquid, the anions dissociated from the liquid swim to the second pole, and the cations dissociated from the liquid swim to the first pole.

An embodiment of the present invention provides a liquid atomization circuit, which is suitable for controlling a liquid atomization spray module. The liquid atomizing circuit includes a drive unit, a control unit and a voltage supply unit. The driving unit is used to output a driving voltage to directly drive the spray module. The control unit is coupled to the driving unit, and the control unit is used for controlling the driving unit to output a driving voltage. The voltage supply unit is coupled between the control unit and the spray module. Wherein, the spray module has a first pin and a second pin. The first pin is coupled to the driving unit, and the second pin is coupled to the voltage supply unit. The voltage supply unit outputs a preset voltage to the spray module.

According to a preferred embodiment of the liquid atomization circuit of the present invention, the voltage supply unit is a boost unit or a power supply unit, the boost unit is a boost circuit, a step-down circuit or a step-down circuit, and the power supply unit includes A battery or a voltage source.

According to a preferred embodiment of the liquid atomizing circuit of the present invention, the driving unit includes a first switch, a second switch and a first capacitor. The control end of the first switch is coupled to the control unit, the first end of the first switch is coupled to a ground end, the second end of the first switch is coupled to a first inductor and a first unidirectional conduction component; The control terminal is coupled to the control unit, the first terminal of the second switch is coupled to the ground terminal, the second terminal of the second switch is coupled to a second inductor and the first pin of the spray module; the first capacitor is coupled to the first unit Between the conduction component, the second inductor and the ground terminal; wherein, the anode of the first unidirectional conduction component is coupled to the first inductor, and the cathode of the first unidirectional conduction component is coupled to the second inductor and the first capacitor.

According to a preferred embodiment of the liquid atomizing circuit of the present invention, the driving voltage is a pulsating DC voltage, the waveform of the driving voltage is a sine wave, a triangular wave or a square wave, and the preset voltage is a positive potential voltage greater than zero voltage.

According to a preferred embodiment of the liquid atomization circuit of the present invention, when the driving voltage is greater than the preset voltage, the spray module performs a forward electrolytic reaction, and when the driving voltage is lower than the preset voltage, the spray module performs a forward electrolytic reaction, The positive electrolytic reaction refers to the electrolytic reaction between the first pole and the second pole of the spray module and the liquid, the anions dissociated from the liquid swim to the first pole, and the cations dissociated from the liquid swim to the second pole, and The reverse electrolysis reaction refers to the electrolysis reaction between the first pole and the second pole of the spray module and the liquid, the anions dissociated from the liquid swim to the second pole, and the cations dissociated from the liquid swim to the first pole.

An embodiment of the present invention provides a liquid atomization circuit, which is suitable for controlling a liquid atomization spray module. The liquid atomizing circuit includes a drive unit and a control unit. The driving unit is used to output a driving voltage to directly drive the spray module. The control unit is coupled to the driving unit, and the control unit is used for controlling the driving unit to output a driving voltage. Wherein, the spray module has a first pin and a second pin. The first pin and the second pin are respectively coupled to the driving unit. The drive unit outputs a preset voltage to the spray module.

According to a preferred embodiment of the liquid atomization circuit of the present invention, the drive unit includes: a first switch, a second switch and a first capacitor. The control end of the first switch is coupled to the control unit, the first end of the first switch is coupled to a ground end, the second end of the first switch is coupled to a first inductor and a first unidirectional conduction element; The control terminal is coupled to the control unit, the first terminal of the second switch is coupled to the ground terminal, the second terminal of the second switch is coupled to a second inductor and the first pin of the spray module; the first capacitor is coupled to the first unit Between the conduction component, the second inductance and the ground terminal; wherein, the anode of the first unidirectional conduction component is coupled to the first inductance, the cathode of the first unidirectional conduction component is coupled to the second inductance and the first capacitor, and the spray module The second pin of the second pin is coupled to the first unidirectional conduction element, the second inductor and the first capacitor.

According to a preferred embodiment of the liquid atomization circuit of the present invention, the driving unit includes: a first switch, a second switch, a first capacitor and a second capacitor. The control end of the first switch is coupled to the control unit, the first end of the first switch is coupled to a ground end, the second end of the first switch is coupled to a first inductor and a first unidirectional conduction component; The control terminal is coupled to the control unit, the first terminal of the second switch is coupled to the ground terminal, the second terminal of the second switch is coupled to a second inductor and the first pin of the spray module; the first capacitor is coupled to the first unit between the conductive component, the second inductance and the ground terminal; the second capacitor is coupled to a second unidirectional conductive component, the second pin of the spray module and the ground terminal; wherein, the anode of the first unidirectional conductive component is coupled to the second An inductor, the cathode of the first unidirectional conducting component is coupled to the second inductor and the first capacitor, and the anode of the second unidirectional conducting component is coupled to the second inductor, the second switch and the first pin of the spray module, and the second The cathode of the one-way conduction component is coupled to the second capacitor and the second pin of the spray module.

According to a preferred embodiment of the liquid atomizing circuit of the present invention, the driving voltage is a pulsating DC voltage, the waveform of the driving voltage is a sine wave, a triangular wave or a square wave, and the preset voltage is a positive potential voltage greater than zero voltage.

According to a preferred embodiment of the liquid atomization circuit of the present invention, when the driving voltage is greater than the preset voltage, the spray module performs a forward electrolytic reaction, and when the driving voltage is lower than the preset voltage, the spray module performs a forward electrolytic reaction, The positive electrolytic reaction refers to the electrolytic reaction between the first pole and the second pole of the spray module and the liquid, the anions dissociated from the liquid swim to the first pole, and the cations dissociated from the liquid swim to the second pole, and The reverse electrolysis reaction refers to the electrolysis reaction between the first pole and the second pole of the spray module and the liquid, the anions dissociated from the liquid swim to the second pole, and the cations dissociated from the liquid swim to the first pole.

An embodiment of the present invention provides a liquid atomization device, which includes a body, a liquid atomization circuit, and a spray module. The liquid atomizing circuit is arranged on the body. The spray module is coupled to the liquid atomization circuit. Wherein, the liquid atomization circuit is used to control the operation of the spray module for liquid atomization.

The specific method of the present invention is to use the liquid atomization circuit and its device to output a driving voltage to the first pin of the spray module through the driving unit, and the second pin of the spray module receives a preset voltage. In this way, the spray module forms sound wave oscillation according to the driving voltage and the preset voltage to generate fine mist particles. Therefore, the liquid atomization circuit of the present invention can indeed increase the amount of spray and improve the convenience of use of the liquid atomization device.

The above overview and the following embodiments are all for further illustrating the technical means and achieving technical effects of the present invention, but the described embodiments and drawings are only for reference and description, and are not used to limit the present invention.

Description of drawings

FIG. 1 is a functional block diagram of a liquid atomization circuit according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention.

FIG. 3 is a schematic diagram of driving voltage waveforms of the spray module according to another embodiment of the present invention shown in FIG. 2 .

FIG. 3A is a schematic diagram of a preset voltage waveform of the spray module according to another embodiment of the present invention shown in FIG. 2 .

FIG. 3B is a schematic waveform diagram of the driving voltage and the preset voltage of the spray module according to another embodiment of the present invention shown in FIG. 3 and FIG. 3A .

Fig. 4 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention.

Fig. 5 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention.

Fig. 6 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention.

Fig. 7 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention.

Fig. 8 is a schematic diagram of a liquid atomizing device according to another embodiment of the present invention.

Detailed ways

FIG. 1 is a functional block diagram of a liquid atomization circuit according to an embodiment of the present invention. See Figure 1. A liquid atomization circuit 1 is suitable for controlling a spray module 14 for liquid atomization. The liquid atomization circuit 1 includes a driving unit 12 and a control unit 10 . The control unit 10 is coupled to the driving unit 12 and the spray module 14 . The driving unit 12 is coupled to the spray module 14 .

In practice, the control unit 10 is used to control the driving unit 12 to output the driving voltage. The driving unit 12 is used to output a driving voltage to directly drive the spray module 14 . For example, the control unit 10 outputs a control signal to the driving unit 12 , causing the driving unit 12 to output a driving voltage to the spray module 14 . Therefore, the mist particles generated by the spray module 14 have a particle size of about 3-5 μm, so that the mist particles can effectively reach the alveoli and be directly absorbed by the human body.

In detail, the control unit 10 is, for example, a control chip, a micro control chip or a PWM control chip, and this embodiment does not limit the form of the control unit 10 . Wherein, the control unit 10 has a plurality of built-in ports capable of outputting pulse modulation signals, the frequency adjustment range of which is, for example, 10 Hz-1 MHz, and the duty cycle (Duty Cycle) adjustment range is, for example, 10%-90%. In practice, the control unit 10 can output one or more control signals. The control signal is used to control the operation of the driving unit 12 .

The driving unit 12 is, for example, a driving circuit including one or more switches, one or more inductors, one or more capacitors and diodes. This embodiment does not limit the form of the driving unit 12 . Wherein, the driving unit 12 is used for receiving the control signal output by the control unit 10 . In practice, the driving unit 12 outputs a driving voltage vibrating at an output frequency to the spray module 14 according to the control signal. Wherein, the driving voltage is, for example, a pulsating DC voltage. The waveform of the driving voltage is, for example, a sine wave, a triangular wave or a square wave.

The spray module 14 includes, for example, a nozzle hole (not shown) and a piezoelectric sheet (not shown). Wherein, the orifice member is configured on the piezoelectric sheet. The orifice member is, for example, a vibrating piece having a plurality of fine perforations. The piezoelectric sheet is, for example, a piezoelectric actuator vibrating at a frequency. Wherein, the orifice member and the piezoelectric sheet can be designed as one or in combination.

The spray module 14 has a first pin P1 and a second pin P2. The first pin P1 is coupled to the driving unit 12 , and the second pin P2 is coupled to the control unit 10 . For convenience of description, the first pin P1 is, for example, the pin of the positive end of the spray module 14 . The second pin P2 is, for example, the pin of the negative end of the spray module 14 . This embodiment does not limit the form of the spray module 14 .

In addition, the control unit 10 outputs a preset voltage to the spray module 14 . The preset voltage is, for example, a positive level voltage greater than zero voltage, such as +10V, +20V, +40V or any other positive value volts. Generally speaking, the known liquid atomization circuit needs to pass through the conversion circuit to convert the voltage to the spray module. And one of the two pins of the known spray module is grounded. For example, a first pin of a known spray module is coupled to a switching circuit, and a second pin is coupled to ground. Therefore, the known liquid atomization circuit tends to consume more power, and the second pin coupled to the ground tends to receive more tiny noises.

However, the liquid atomizing circuit 1 of the present embodiment directly drives the spray module 14 through the driving unit 12, thereby reducing the conversion or loss of electric energy. And the second pin P2 of the spray module 14 in this embodiment is not grounded. The second pin P2 is coupled to the control unit 10 to receive a preset positive level voltage. Therefore, compared with the known second pin, the second pin P2 of this embodiment can receive the preset positive level voltage, and the known tiny noise is almost equal to the preset positive level voltage. Can be ignored or omitted. Therefore, compared with the known liquid atomizing circuit, the liquid atomizing circuit 1 of this embodiment has lower power loss, a cleaner signal received by the ground terminal of the printed circuit board, and better spraying performance.

It is worth mentioning that when the spray module 14 is in contact with or immersed in the liquid, when the drive unit 12 of the present invention provides a driving voltage to the spray module 14, and the control unit 10 provides a preset voltage to the spray module 14, the spray module 14 Generate a forward electrolytic reaction and a reverse electrolytic reaction according to the driving voltage and the preset voltage. For example, when the driving voltage is greater than the preset voltage, the spray module 14 performs a forward electrolytic reaction; when the driving voltage is lower than the preset voltage, the spray module 14 performs a reverse electrolytic reaction.

That is to say, the spray module 14 of the present invention slows down the rate at which the first pole and the second pole of the spray module 14 produce electrolytic substances through the forward electrolysis reaction and the reverse electrolysis reaction. Therefore, the spray module 14 will slow down the chance of adhering the electrolytic substance at the first pole and the second pole, thereby improving the service life of the spray module 14 or the liquid atomizing device.

Fig. 2 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention. See Figure 2. This embodiment will further illustrate the detailed components, circuits and operation of the driving unit 12 . Wherein, the driving unit 12 includes a first switch Q1 , a second switch Q2 , a first unidirectional conduction element D1 , a first inductor L1 , a second inductor L2 and a first capacitor C.

In practice, the control terminal G of the first switch Q1 is coupled to the control unit 10 . The first terminal S of the first switch Q1 is coupled to a ground terminal GND. The second end D of the first switch Q1 is coupled to a first inductor L1 and a first one-way conducting element D1. Wherein, the first terminal S of the first switch Q1 is, for example, a source terminal, and the second terminal D of the first switch Q1 is, for example, a drain terminal. The first unidirectional conduction element D1 is, for example, a diode or a Schottky diode.

The control terminal G of the second switch Q2 is coupled to the control unit 10, the first terminal S of the second switch Q2 is coupled to the ground terminal GND, and the second terminal D of the second switch Q2 is coupled to a second inductor L2 and the spray module 14. first pin P1. The first capacitor C is coupled between the first unidirectional conduction element D1 , the second inductor L2 and the ground terminal GND. Wherein, the first terminal S of the second switch Q2 is, for example, a source terminal, and the second terminal D of the second switch Q2 is, for example, a drain terminal.

Therefore, the control unit 10 can control the turn-on or turn-off of the first switch Q1 to charge or discharge the first inductor L1; or the control unit 10 can control the turn-on or turn-off of the second switch Q2 to make the second inductor L2 charge or discharge. Wherein, the control unit 10 can control the turn-on or turn-off of the first and second switches Q1 and Q2 through interleaved control, synchronous control or other control methods. This embodiment does not limit the operation of the liquid atomization circuit 1 .

In addition, the anode of the first unidirectional conduction element D1 is coupled to the first inductor L1 , and the cathode of the first unidirectional conduction element D1 is coupled to the second inductor L2 and the first capacitor C. Wherein, the first inductor L1 is coupled to a working voltage VCC. It can be seen that the control unit 10 controls the on or off operation of the first and second switches Q1 and Q2 , so that the driving unit 12 outputs a driving voltage to directly drive the spray module 14 . And the control unit 10 outputs a preset voltage to the spray module 14 . Therefore, the piezoelectric sheet of the spray module 14 is deformed greatly according to the driving voltage and the preset voltage, so that the sound wave oscillates to increase the spray volume of the generated micro-mist particles.

FIG. 3 is a schematic diagram of driving voltage waveforms of the spray module according to another embodiment of the present invention shown in FIG. 2 . FIG. 3A is a schematic diagram of a preset voltage waveform of the spray module according to another embodiment of the present invention shown in FIG. 2 . FIG. 3B is a schematic waveform diagram of the driving voltage and the preset voltage of the spray module according to another embodiment of the present invention shown in FIG. 3 and FIG. 3A . Please refer to FIG. 3 , FIG. 3A and FIG. 3B .

The waveform of the driving voltage received by the first pin P1 of the spray module 14 is shown in FIG. 3 . The waveform of the driving voltage shown in FIG. 3 is, for example, a pulsed triangular wave, with a peak of, for example, 50V, and the voltage waveforms of the driving voltage are all greater than 0 volts. That is, the voltage waveform of the driving voltage shown in FIG. 3 is, for example, a pulsed triangular wave voltage of 0-50 volts, and the frequency is about 120 KHZ. Next, the waveform of the preset voltage received by the second pin P2 of the spray module 14 is shown in FIG. 3A . The waveform of the preset voltage shown in FIG. 3A is a positive level bias voltage, for example, 10V.

In FIG. 3B , FIG. 3 and FIG. 3A are combined, that is, the driving voltage and the preset voltage respectively received by the first and second pins P1 and P2 of the spray module 14 . Wherein, the spray module 14 generates a forward electrolysis reaction and a reverse electrolysis reaction according to the driving voltage and the preset voltage. In practice, when the driving voltage is greater than the preset voltage, the spray module 14 performs a forward electrolysis reaction, such as the forward electrolysis section PA in FIG. 3B . When the driving voltage is lower than the predetermined voltage, the spray module 14 performs a reverse electrolysis reaction, such as the reverse electrolysis section NA in FIG. 3B .

In practice, the positive electrolysis section PA refers to "a short circuit occurs between the first pole and the second pole of the spray module 14 immersed in the liquid". Specifically, when the first pole and the second pole of the spray module 14 are short-circuited, an electrolysis current will be generated between the first pole and the second pole. In this way, the electrolytic substances in the liquid are dissociated and will be attached to the first pole and the second pole. The forward electrolytic reaction refers to the electrolytic reaction between a first electrode and a second electrode of the spray module 14 and the liquid, the anions dissociated from the liquid swim to the first electrode, and the cations dissociated from the liquid swim to the second electrode.

The reverse electrolysis section NA refers to "the first pole transformed into a negative pole, and the second pole transformed into a positive pole". The reverse electrolysis reaction refers to the electrolysis reaction between the first pole and the second pole of the spray module 14 and the liquid, the anions dissociated from the liquid swim to the second pole, and the cations dissociated from the liquid swim to the first pole. Wherein, the first pole and the second pole are, for example, welded on the same surface of the piezoelectric sheet, and are contacted or immersed in the liquid. When the piezoelectric sheet of the spray module 14 receives the driving voltage and the preset voltage, the piezoelectric sheet generates an electrolytic reaction with the liquid according to the driving voltage and the preset voltage.

For example, the voltage waveform in FIG. 3B includes a plurality of reverse electrolysis sections NA and a plurality of forward electrolysis sections PA. For example, when the driving voltage is less than 10 volts, that is, the reverse electrolysis section NA in which "the driving voltage is less than the preset voltage", the piezoelectric sheet can generate a reverse electrolysis reaction with the liquid. On the contrary, for example, when the driving voltage is greater than 10 volts, that is, the positive electrolysis section PA where the “driving voltage is greater than the preset voltage”, the piezoelectric sheet can generate a positive electrolytic reaction with the liquid. In addition, the piezoelectric sheet forms sound wave oscillations according to the driving voltage to produce the technical effect of liquid atomization.

Next, the liquid atomization circuits 1a and 1b in FIG. 4 and FIG. 5 also include a voltage supply unit. The voltage supply unit is coupled between the control unit 10 and the spray module 14 . For convenience of description, the voltage supply unit in FIG. 4 is illustrated as a boost unit 16 . The voltage supply unit in FIG. 5 is illustrated by a power supply unit 18 . In other embodiments, the voltage supply unit may also include the boost unit 16 and the power unit 18 shown in FIG. 4 . This embodiment does not limit the aspect of the voltage supply unit.

Fig. 4 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention. See Figure 4. The liquid atomization circuit 1a of this embodiment is similar to the liquid atomization circuit 1 of the previous embodiment, for example, the first pin P1 of the spray module 14 also receives the driving voltage, and the second pin P2 also receives the preset voltage. However, there is still a difference between this embodiment and the liquid atomizing circuit 1a, 1 of the previous embodiments, which lies in that: the liquid atomizing circuit 1a of this embodiment further includes a booster unit 16 .

In practice, the boost unit 16 is, for example, a boost circuit, a buck circuit or a buck-boost circuit. The boost unit 16 is, for example, an adjustable boost circuit or a fixed boost circuit. Wherein, the adjustable boost circuit is, for example, a Linear model LTC3426 circuit. The fixed boost circuit is, for example, a HOLTEK model HT77XXA series circuit. In short, the boost unit 16 is used to boost the voltage to output to the spray module 14 . This embodiment does not limit the form of the boost unit 16 .

Wherein, the spray module 14 has a first pin P1 and a second pin P2. The first pin P1 is coupled to the driving unit 12 , and the second pin P2 is coupled to the boost unit 16 . The boost unit 16 outputs a preset voltage to the spray module 14 . That is to say, the boost unit 16 is controlled by the control unit 10 , so the boost unit 16 can provide a preset positive level voltage to the spray module 14 .

Except for the above differences, the operation part of this embodiment is substantially equivalent to the above embodiments, and those skilled in the art should be able to easily deduce it after referring to the above embodiments and the above differences, so details are not repeated here.

Fig. 5 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention. See Figure 5. The liquid atomizing circuit 1b of this embodiment is similar to the liquid atomizing circuit 1 of the previous embodiment. However, there is still a difference between this embodiment and the liquid atomizing circuit 1b, 1 of the previous embodiments, which lies in that: the liquid atomizing circuit 1b of this embodiment further includes a power supply unit 18 .

In practice, the power supply unit 18 includes a battery or a voltage source. That is, a battery or a voltage source can provide a preset voltage to the spray module 14 . For example, a 10V battery or accumulator can provide a preset voltage such as 10V to the spray module 14 . This embodiment does not limit the form of the power supply unit 18 .

Wherein, the spray module 14 has a first pin P1 and a second pin P2. The first pin P1 is coupled to the driving unit 12 , and the second pin P2 is coupled to the power unit 18 . The power supply unit 18 outputs a preset voltage to the spray module 14 . That is to say, the power unit 18 can provide a bias voltage or a preset positive level voltage to the spray module 14 .

In other embodiments, those skilled in the art can combine the liquid atomization circuits 1a, 1b of Fig. 4 with Fig. 5 . That is, the liquid atomization circuit 1 in FIG. 2 further includes a power supply unit 18 and a boost unit 16 . Wherein, the power unit 18 is coupled between the control unit 10 and the boost unit 16 . The boost unit 16 is coupled to the second pin P2 of the spray module 14 . The rest of the operations are substantially equivalent to the above-mentioned embodiments, so they are not repeated here.

Fig. 6 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention. See Figure 6. The liquid atomization circuit 1c of this embodiment is similar to the liquid atomization circuit 1 of the previous embodiment, for example, the first pin P1 of the spray module 14 also receives the driving voltage, and the second pin P2 also receives the preset voltage. However, there is still a difference between this embodiment and the liquid atomization circuits 1c, 1 of the previous embodiments, which lies in that the second pin P2 of the spray module 14 of this embodiment is coupled to the driving unit 12a.

In practice, the spray module 14 has a first pin P1 and a second pin P2. The first pin P1 and the second pin P2 are respectively coupled to the driving unit 12 a, and the driving unit 12 a outputs a preset voltage to the spray module 14 . In simple terms, the driving unit 12 a can output a driving voltage to the spray module 14 and output a preset voltage to the spray module 14 .

In detail, the driving unit 12 a includes a first switch Q1 , a second switch Q2 and a first capacitor C. As shown in FIG. Wherein, the driving unit 12a is similar to the driving unit 12 in FIG. 2, but the second pin P2 of the spray module 14 of this embodiment is coupled to the cathode of the first unidirectional conductive component D1, the second inductor L2 and the first capacitor c.

In short, the driving unit 12 a has a node N1 coupled to the second pin P2 of the spray module 14 . Therefore, the driving unit 12 a outputs a preset voltage to the spray module 14 through the first capacitor C and the node N1 . Of course, the driving unit 12a can also output the driving voltage to the first pin P1 of the spray module 14 through the switches Q1 , Q2 and the inductors L1 , L2 .

It can be seen that the driving unit 12a can output the driving voltage and the preset voltage to the first pin P1 and the second pin P2 of the spray module 14 respectively. Except for the above differences, the operation part of this embodiment is substantially equivalent to the above embodiments, and those skilled in the art should be able to easily deduce it after referring to the above embodiments and the above differences, so details are not repeated here.

Fig. 7 is a schematic diagram of a liquid atomization circuit according to another embodiment of the present invention. See Figure 7. The liquid atomizing circuit 1d of this embodiment is similar to the liquid atomizing circuit 1 of the previous embodiment. However, there is still a difference between this embodiment and the liquid atomization circuits 1d, 1 of the previous embodiments, which lies in that: the second pin P2 of the spray module 14 of this embodiment is coupled to the driving unit 12b.

In practice, the driving unit 12b includes a first switch Q1, a second switch Q2, a first capacitor C and a second capacitor Ca. In practice, the control terminal G of the first switch Q1 is coupled to the control unit 10, the first terminal S of the first switch Q1 is coupled to a ground terminal GND, and the second terminal D of the first switch Q1 is coupled to a first inductor L1. and a first unidirectional conducting element D1.

The control terminal G of the second switch Q2 is coupled to the control unit 10, the first terminal S of the second switch Q2 is coupled to the ground terminal GND, and the second terminal D of the second switch Q2 is coupled to a second inductor L2 and the spray module 14. first pin P1. The first capacitor C is coupled between the first unidirectional conduction element D1 , the second inductor L2 and the ground terminal GND. The second capacitor Ca is coupled to a second unidirectional conduction component D2 , the second pin P2 of the spray module 14 and the ground terminal GND.

Wherein, the anode of the first unidirectional conduction element D1 is coupled to the first inductor L1 , and the cathode of the first unidirectional conduction element D1 is coupled to the second inductor L2 and the first capacitor C. The anode of the second unidirectional conduction component D2 is coupled to the second inductor L2 , the second switch Q2 and the first pin P1 of the spray module 14 . The cathode of the second unidirectional conduction component D2 is coupled to the second capacitor Ca and the second pin P2 of the spray module 14 .

To put it simply, the difference between FIG. 7 and the driving units 12a and 12b in FIG. 6 is that the driving unit 12b in FIG. 7 further includes a second unidirectional conduction element D2 and a second capacitor Ca. Wherein, the second unidirectional conduction component D2 is connected in series with the second capacitor Ca, and the spray module 14 is connected in parallel with the second unidirectional conduction component D2, and the second pin P2 of the spray module 14 is coupled to the second unidirectional conduction component D2 and between the second capacitor Ca. The operation part of this embodiment is substantially equivalent to the above embodiment, and the other parts are similar, so they will not be repeated here.

Fig. 8 is a schematic diagram of a liquid atomizing device according to another embodiment of the present invention. See Figure 8. The liquid atomizing device LD is, for example, an oral or nasal water-air or liquid-air spray device, or an inhalation medical device. Wherein, the vibrating liquid atomizing device LD drives the spray module 14 (ie, the combination of the nozzle hole and the piezoelectric sheet) with a frequency to form sound wave oscillation to generate fine mist particles.

Wherein, the liquid atomization device LD includes a body B1 , a liquid atomization circuit 1 and a spray module 14 . The liquid atomizing circuit 1 , 1a, 1b, 1c, 1d as shown in FIG. 2 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 is disposed on the body B1 . The spray module 14 is coupled to the liquid atomizing circuit 1 , 1a, 1b, 1c, 1d as shown in FIG. 2 , FIG. 4 , FIG. 5 , FIG. 6 or FIG. 7 . In addition, the body B1 includes a cup. The cup body is used to hold medicine or other liquids, such as distilled water, physiological saline, artificial tears, medicine and the like.

It is worth mentioning that, for the convenience of description, this embodiment compares the liquid atomizing circuit 1 in FIG. 2 with a known liquid atomizing device. Compared with the known liquid atomizing device, the liquid atomizing device LD of this embodiment can produce a better atomizing effect through the liquid atomizing circuit 1 . The test is performed with 1ml of liquid medicine and the optimum resonance point frequency of about 120 KHz, and the comparison table with the liquid atomization device LD of this embodiment is known, as shown in Table 1.

Table I

In short, compared with the known liquid atomizing device, the liquid atomizing device LD of the present embodiment can increase the spray volume by about 40% (the formula is: (0.395/0.29)-1). That is to say, with the same 1ml liquid medicine, and with the optimum resonance point frequency of about 120KHz to test, the liquid atomization device LD of this embodiment can output micro-mist particles of 0.395ml/min, while the known liquid atomization The device outputs 0.29ml/min micro mist particles. It can be seen that the liquid atomization device LD of this embodiment can increase the spray volume of liquid atomization.

In summary, the present invention is a liquid atomization circuit, in which the control unit controls the driving unit to output a driving voltage to the first pin of the spray module, and the second pin of the spray module receives a preset voltage. Wherein, the preset voltage is a positive level voltage. The driving voltage is a pulsating DC voltage. Therefore, according to the driving voltage and the preset voltage, the spray module forms sound wave oscillation to generate fine mist particles. Furthermore, according to the relative size relationship between the driving voltage and the preset voltage, the spraying module causes the piezoelectric sheet of the spraying module to undergo a forward or reverse electrolytic reaction, thereby reducing the positive and negative electrodes of the piezoelectric sheet immersed in the liquid. Chance of patina or attached electrolytic material. Wherein, when the driving voltage is greater than the preset voltage, the spray module produces a positive electrolytic reaction; or when the driving voltage is lower than the preset voltage, the spray module produces a reverse electrolytic reaction, thereby preventing or slowing down the generation of electrolytic substances and their attachment to the spray module to increase the service life of the spray module. Therefore, the liquid atomization circuit of the present invention can indeed increase the amount of spray, the signal received by the ground terminal of the printed circuit board is cleaner, and overcome the problem of electrolytic substances produced by the known spray module, and improve the use of the liquid atomization device longevity and convenience.

The above descriptions are only examples of the present invention, and are not intended to limit the patent scope of the present invention.

Claims (12)

1. A liquid atomizing circuit adapted to control a spray module for atomizing a liquid, the liquid atomizing circuit comprising:

a driving unit for outputting a driving voltage to directly drive the spraying module; and

The control unit is coupled with the driving unit and used for controlling the driving unit to output the driving voltage;

wherein the spraying module has a first pin and a second pin, the first pin is coupled to the driving unit, the second pin is coupled to the control unit, the control unit outputs a preset voltage to the spraying module, and

when the driving voltage is smaller than the preset voltage, the spraying module performs a reverse electrolytic reaction, wherein the forward electrolytic reaction refers to that the first pole and the second pole of the spraying module generate electrolytic reaction with liquid, the anions dissociated from the liquid flow to the first pole, the cations dissociated from the liquid flow to the second pole, and the reverse electrolytic reaction refers to that the first pole and the second pole of the spraying module generate electrolytic reaction with the liquid, the anions dissociated from the liquid flow to the second pole, and the cations dissociated from the liquid flow to the first pole.

2. The liquid atomizing circuit according to claim 1, wherein the driving unit includes:

the control end of the first switch is coupled with the control unit, the first end of the first switch is coupled with a grounding end, and the second end of the first switch is coupled with a first inductor and a first unidirectional conduction component;

the control end of the second switch is coupled with the control unit, the first end of the second switch is coupled with the grounding end, and the second end of the second switch is coupled with a second inductor and the first pin of the spraying module; and

The first capacitor is coupled among the first unidirectional conduction component, the second inductor and the grounding end;

the anode of the first unidirectional conduction component is coupled with the first inductor, and the cathode of the first unidirectional conduction component is coupled with the second inductor and the first capacitor.

3. The liquid atomizing circuit according to claim 1, wherein the driving voltage is a pulsating dc voltage, the driving voltage has a waveform of a sine wave, a triangle wave or a square wave, and the predetermined voltage is a positive level voltage greater than zero voltage.

4. A liquid atomizing circuit adapted to control a spray module for atomizing a liquid, the liquid atomizing circuit comprising:

a driving unit for outputting a driving voltage to directly drive the spraying module;

the control unit is coupled with the driving unit and used for controlling the driving unit to output a driving voltage; and

A voltage supply unit coupled between the control unit and the spraying module;

wherein the spraying module has a first pin and a second pin, the first pin is coupled to the driving unit, the second pin is coupled to the voltage supply unit, the voltage supply unit outputs a preset voltage to the spraying module, and

when the driving voltage is larger than the preset voltage, the spraying module performs a forward electrolytic reaction, when the driving voltage is smaller than the preset voltage, the spraying module performs a reverse electrolytic reaction, wherein the forward electrolytic reaction means that a first pole and a second pole of the spraying module generate electrolytic reaction with liquid, anions dissociated from the liquid flow to the first pole, cations dissociated from the liquid flow to the second pole, and the reverse electrolytic reaction means that the first pole, the second pole and the liquid of the spraying module generate electrolytic reaction, anions dissociated from the liquid flow to the second pole, and cations dissociated from the liquid flow to the first pole.

5. The liquid atomizing circuit of claim 4, wherein the voltage supply unit is a voltage boosting unit or a power supply unit, the voltage boosting unit is a voltage boosting circuit, a voltage reducing circuit or a voltage boosting and reducing circuit, and the power supply unit comprises a storage battery or a voltage source.

6. The liquid atomizing circuit of claim 4, wherein the drive unit comprises:

the control end of the first switch is coupled with the control unit, the first end of the first switch is coupled with a grounding end, and the second end of the first switch is coupled with a first inductor and a first unidirectional conduction component;

the control end of the second switch is coupled with the control unit, the first end of the second switch is coupled with the grounding end, and the second end of the second switch is coupled with a second inductor and the first pin of the spraying module; and

The first capacitor is coupled among the first unidirectional conduction component, the second inductor and the grounding end;

the anode of the first unidirectional conduction component is coupled with the first inductor, and the cathode of the first unidirectional conduction component is coupled with the second inductor and the first capacitor.

7. The liquid atomizing circuit according to claim 4, wherein the driving voltage is a pulsating dc voltage, the driving voltage has a waveform of a sine wave, a triangle wave or a square wave, and the predetermined voltage is a positive level voltage greater than zero voltage.

8. A liquid atomizing circuit adapted to control a spray module for atomizing a liquid, the liquid atomizing circuit comprising:

a driving unit for outputting a driving voltage to directly drive the spraying module; and

The control unit is coupled with the driving unit and used for controlling the driving unit to output a driving voltage;

wherein the spraying module has a first pin and a second pin, the first pin and the second pin are respectively coupled to the driving unit, the driving unit outputs a preset voltage to the spraying module, and

when the driving voltage is smaller than the preset voltage, the spraying module performs a reverse electrolytic reaction, wherein the forward electrolytic reaction refers to that the first pole and the second pole of the spraying module generate electrolytic reaction with liquid, the anions dissociated from the liquid flow to the first pole, the cations dissociated from the liquid flow to the second pole, and the reverse electrolytic reaction refers to that the first pole and the second pole of the spraying module generate electrolytic reaction with the liquid, the anions dissociated from the liquid flow to the second pole, and the cations dissociated from the liquid flow to the first pole.

9. The liquid atomizing circuit of claim 8, wherein the drive unit comprises:

the control end of the first switch is coupled with the control unit, the first end of the first switch is coupled with a grounding end, and the second end of the first switch is coupled with a first inductor and a first unidirectional conduction component;

the control end of the second switch is coupled with the control unit, the first end of the second switch is coupled with the grounding end, and the second end of the second switch is coupled with a second inductor and the first pin of the spraying module; and

The first capacitor is coupled among the first unidirectional conduction component, the second inductor and the grounding end;

the anode of the first unidirectional conduction component is coupled with the first inductor, the cathode of the first unidirectional conduction component is coupled with the second inductor and the first capacitor, and the second pin of the spraying module is coupled with the first unidirectional conduction component, the second inductor and the first capacitor.

10. The liquid atomizing circuit of claim 8, wherein the drive unit comprises:

the control end of the first switch is coupled with the control unit, the first end of the first switch is coupled with a grounding end, and the second end of the first switch is coupled with a first inductor and a first unidirectional conduction component;

the control end of the second switch is coupled with the control unit, the first end of the second switch is coupled with the grounding end, and the second end of the second switch is coupled with a second inductor and the first pin of the spraying module; and

The first capacitor is coupled among the first unidirectional conduction component, the second inductor and the grounding end;

the second capacitor is coupled with a second unidirectional conduction component, the second pin of the spraying module and the grounding end;

the anode of the first unidirectional conduction component is coupled with the first inductor, the cathode of the first unidirectional conduction component is coupled with the second inductor and the first capacitor, the anode of the second unidirectional conduction component is coupled with the second inductor, the second switch and the first pin of the spraying module, and the cathode of the second unidirectional conduction component is coupled with the second capacitor and the second pin of the spraying module.

11. The liquid atomizing circuit according to any one of claims 8 to 10, wherein the driving voltage is a pulsating dc voltage, the driving voltage has a waveform of a sine wave, a triangular wave or a square wave, and the predetermined voltage is a positive level voltage greater than zero voltage.

12. A liquid atomizing device, comprising:

a body;

a liquid atomizing circuit according to any one of claims 1 to 11, disposed in the body; and

A spraying module coupled to the liquid atomizing circuit;

wherein the liquid atomization circuit is used for controlling the operation of the spraying module for liquid atomization.