Disinfectant generator and its control method

Abstract

This invention relates to the field of disinfectant preparation technology, and discloses a disinfectant manufacturing machine and its control method. The disinfectant manufacturing machine includes: a receiving cavity, an electrolytic negative electrode plate, an ultrasonic microporous atomizing plate, and an electrolytic atomization control circuit. The electrolytic negative electrode plate is located within the receiving cavity and is positioned opposite to the ultrasonic microporous atomizing plate. The surface of the metal sheet of the ultrasonic microporous atomizing plate is made of a metal material that prevents electrolytic corrosion. The electrolytic atomization control circuit is connected to the ultrasonic microporous atomizing plate and the electrolytic negative electrode plate, and is used to control the ultrasonic microporous atomizing plate and the electrolytic negative electrode plate to electrolyze the electrolyte to obtain disinfectant, and to control the ultrasonic microporous atomizing plate to atomize and spray the disinfectant. This achieves an integrated design of electrolysis and atomization, simplifies the structure of the disinfectant manufacturing machine, facilitates miniaturization of the equipment, and, by spraying the disinfectant through the ultrasonic microporous atomizing plate, expands the effective area of ​​the disinfectant, improves the sterilization rate, and enhances the user experience.

Description

Technical Field

[0001] This invention relates to the field of disinfectant preparation technology, specifically to a disinfectant manufacturing machine and its control method. Background Technology

[0002] Sodium hypochlorite solution is widely used as a disinfectant for routine disinfection because it can disinfect by destroying the cell membranes, somatic proteins, and nucleic acids of microorganisms. Existing disinfectant generators typically prepare sodium hypochlorite by electrolyzing saline solution. The resulting disinfectant is then atomized using a spray nozzle driven by a squeeze or water pump to disinfect the environment. However, these generators require separate electrolysis and atomization devices, resulting in complex structures that hinder miniaturization. Summary of the Invention

[0003] In view of this, the present invention provides a disinfectant water manufacturing machine and its control method to solve the problem that disinfectant water manufacturing machines in the related art require separate electrolysis devices and atomization devices, resulting in complex equipment structures and hindering the miniaturization design of disinfectant water manufacturing machines.

[0004] In a first aspect, the present invention provides a disinfectant water manufacturing machine, comprising: a receiving cavity, an electrolytic negative electrode plate and an ultrasonic microporous atomizing plate, wherein the receiving cavity contains an electrolyte required for preparing disinfectant water, and the ultrasonic microporous atomizing plate is disposed on the cavity of the receiving cavity and communicates with the outside; the disinfectant water manufacturing machine further comprises: an electrolytic atomization control circuit.

[0005] The electrolytic negative electrode is located inside the receiving cavity and is positioned opposite to the ultrasonic microporous atomizing sheet;

[0006] The surface of the metal sheet of the ultrasonic microporous atomizing plate is a metal material that prevents electrolytic corrosion.

[0007] The electrolytic atomization control circuit is connected to the ultrasonic microporous atomizing plate and the electrolytic negative electrode plate, and is used to control the ultrasonic microporous atomizing plate and the electrolytic negative electrode plate to electrolyze the electrolyte to obtain disinfectant water, and to control the ultrasonic microporous atomizing plate to spray out the disinfectant water.

[0008] This invention utilizes an ultrasonic microporous atomizing plate, made of a metal sheet with a surface designed to prevent electrolytic corrosion, which, under the control of an electrolytic atomization control circuit, acts as both the positive and negative electrodes to electrolyze the electrolyte and prepare a disinfectant solution. The disinfectant solution is then ultrasonically atomized under the control of the electrolytic atomization control circuit. This integrated design of electrolysis and atomization eliminates the need for separate electrolysis and atomization devices, simplifying the disinfectant manufacturing machine and facilitating miniaturization. Furthermore, the ultrasonic microporous atomizing plate sprays the disinfectant solution, expanding its effective area, increasing the sterilization rate, and enhancing the user experience.

[0009] In one optional embodiment, the electrolytic atomization control circuit includes: a controller, an atomization control circuit, and an electrolysis control circuit;

[0010] The atomization control circuit includes an inductor, a first controlled switch, and a second controlled switch. One end of the inductor is connected to an external power supply, and the other end is connected to the positive terminal of the ultrasonic microporous atomizing plate and the first output terminal of the first controlled switch. The control terminal of the first controlled switch is connected to the first output terminal of the controller to receive the atomization drive signal from the controller. The second output terminal of the first controlled switch is grounded. The control terminal of the second controlled switch is connected to the second output terminal of the controller to receive the atomization electrolysis switching signal from the controller. The first output terminal is connected to the negative terminal of the ultrasonic microporous atomizing plate, and the second output terminal is grounded.

[0011] The electrolysis control circuit includes: a third controlled switch, the control terminal of which is connected to the third output terminal of the controller for receiving the electrolysis control signal from the controller; a first output terminal connected to the electrolysis negative electrode; and a second output terminal grounded.

[0012] By using the controller to output different control signals to the atomization control circuit and the electrolysis control circuit, the on and off of the atomization control circuit and the electrolysis control circuit are controlled, so as to realize the reuse of the ultrasonic microporous atomizing plate in the electrolysis process and the atomization process. While simplifying the structure of the disinfectant water manufacturing machine, it realizes precise control of disinfectant water preparation and atomization disinfection, improves the intelligence level of the disinfectant water manufacturing machine, and further enhances the user experience.

[0013] In one optional embodiment, the atomization control circuit further includes: an electrolytic capacitor, a first voltage divider circuit, and a second voltage divider circuit;

[0014] One end of the electrolytic capacitor is connected to the power supply, and the other end is grounded;

[0015] The voltage input terminal of the first voltage divider circuit is connected to the first output terminal of the controller, and the voltage output terminal is connected to the control terminal of the first controlled switch.

[0016] The voltage input terminal of the second voltage divider circuit is connected to the second output terminal of the controller, and the voltage output terminal is connected to the control terminal of the second controlled switch.

[0017] Therefore, by setting up an electrolytic capacitor to store electrical energy, an auxiliary power supply is provided for the disinfectant water generator. By setting up a first voltage divider circuit and a second voltage divider circuit, voltage signals that meet the switching requirements of the first and second controlled switches are provided.

[0018] In one optional embodiment, the atomization control circuit further includes: a fourth controlled switch, the control terminal of the fourth controlled switch being connected to the controller, and the first output terminal and the second output terminal being respectively connected to the two ends of the inductor.

[0019] Therefore, by setting a fourth controlled switch, the inductor is protected when the disinfectant generator is in the electrolysis stage by controlling the conduction of the fourth controlled switch, so as to prevent the inductor from being damaged by the current flowing into it exceeding its maximum current limit.

[0020] In one optional implementation, the atomization control circuit further includes: a voltage detection circuit and / or a first current detection circuit;

[0021] The input terminal of the voltage detection circuit is connected to one end of the inductor, and the output terminal is connected to the voltage input terminal of the controller. The controller adjusts the frequency of the atomization drive signal according to the voltage detection result of the voltage detection circuit.

[0022] The input terminal of the first current detection circuit is connected to the second output terminal of the first controlled switch, and the output terminal is connected to the first current detection input terminal of the controller. The controller adjusts the duty cycle of the atomization drive signal according to the current detection result of the first current detection circuit.

[0023] By setting up a voltage detection circuit and / or a first current detection circuit, the frequency and / or duty cycle of the atomization drive signal can be adjusted to ensure that the atomization drive signal meets the atomization requirements of the ultrasonic microporous atomizing plate, thereby improving the working performance of the ultrasonic microporous atomizing plate and achieving the best atomization effect.

[0024] In one optional embodiment, the atomization control circuit further includes a Zener diode, wherein the inverting input terminal of the Zener diode is connected to the positive terminal of the ultrasonic microporous atomizing sheet, and the inverting input terminal is grounded.

[0025] By setting a Zener diode, the voltage across the ultrasonic microporous atomizing plate is ensured not to exceed its withstand voltage value, thus providing overvoltage protection for the ultrasonic microporous atomizing plate.

[0026] In one optional embodiment, the electrolysis control circuit further includes: a first capacitor and a liquid level detection circuit;

[0027] One end of the first capacitor is connected to the electrolytic negative electrode, and the other end is connected to the input terminal of the liquid level detection circuit. The output terminal of the liquid level detection circuit is connected to the liquid level detection input terminal of the controller.

[0028] By setting a first capacitor to isolate the DC signal on the side of the electrolytic negative electrode, and by using the electrolytic negative electrode as a water detection probe, the liquid level detection function is realized, so as to avoid the disinfectant generator from operating without electrolyte and prevent the ultrasonic microporous atomizing plate from burning dry.

[0029] In one optional embodiment, the electrolysis control circuit further includes:

[0030] The second current detection circuit has its input terminal connected to the second output terminal of the third controlled switch and its output terminal connected to the second current detection input terminal of the controller. The controller generates the atomization electrolysis switching signal based on the current detection result of the second current detection circuit.

[0031] By setting the current detection signal of the second current detection circuit, the preparation progress of the disinfectant water is determined, and then the controller realizes the automatic start and stop of the disinfectant water preparation, thereby realizing the automated and precise control of the disinfection stage and the atomization stage, and further improving the user experience.

[0032] In one optional embodiment, the electrolysis control circuit further includes:

[0033] The third voltage divider circuit has its voltage input terminal connected to the third output terminal of the controller, and its voltage output terminal connected to the control terminal of the third controlled switch.

[0034] Thus, by setting up a third voltage divider circuit, a voltage signal that meets the switching requirements of the switching device is provided to the third controlled switch.

[0035] In one optional embodiment, the liquid level detection circuit includes: a first resistor, a second resistor, a third resistor, a first diode, a second diode, and a second capacitor;

[0036] One end of the first resistor is connected to the other end of the first capacitor, the inverting input of the first diode, and the forward input of the second diode, respectively, and the other end is connected to the forward input of the first diode and then grounded.

[0037] The reverse input terminal of the second diode is connected to one end of the second resistor, and the other end of the second resistor is connected to one end of the third resistor, one end of the second capacitor, and the liquid level detection input terminal of the controller. The other end of the third resistor is connected to the other end of the second capacitor and then grounded.

[0038] The liquid level in the containment cavity is detected by a voltage divider circuit consisting of the first resistor, the second resistor, and the third resistor. The first diode and the second diode provide freewheeling, and the second capacitor filters the liquid level to ensure the accuracy of the detection results.

[0039] In one optional implementation, the first controlled switch, the second controlled switch, and the third controlled switch are all NMOS transistors.

[0040] Therefore, by using NMOS transistors to control the circuit's operating state, the cost is low and the stability and accuracy of circuit control are good.

[0041] In a second aspect, the present invention provides a control method for a disinfectant water manufacturing machine, applicable to the disinfectant water manufacturing machine as described in the first aspect and any optional embodiment thereof, the method comprising:

[0042] During the electrolysis stage, the controller stops outputting the atomization drive signal and the atomization electrolysis switching signal to control the first and second controlled switches to turn off, and outputs the electrolysis control signal to control the third controlled switch to turn on, so as to use the ultrasonic microporous atomizing plate as the positive and negative electrode plates of electrolysis to electrolyze the electrolyte and obtain disinfectant water.

[0043] During the atomization stage, the controller outputs an atomization drive signal and an atomization electrolysis switching signal to control the first and second controlled switches to be turned on, and stops outputting an electrolysis control signal to control the third controlled switch to be turned off, so as to atomize the disinfectant water using an ultrasonic microporous atomizing plate, and spray the atomized disinfectant liquid out through the micropores on the ultrasonic microporous atomizing plate.

[0044] By utilizing the controller to output different control signals to the atomization control circuit and the electrolysis control circuit during the electrolysis and atomization stages, the ultrasonic microporous atomizing plate can be used as both an electrolysis positive electrode and an atomizing plate, achieving integrated design and precise control of electrolysis and atomization. Furthermore, by spraying the disinfectant through the ultrasonic microporous atomizing plate, the effective area of ​​the disinfectant can be expanded, the sterilization rate can be improved, and the user experience can be enhanced.

[0045] In one alternative implementation, the method further includes, before proceeding to the electrolysis stage:

[0046] The controller stops outputting the atomization electrolysis switching signal and the electrolysis control signal to control the second controlled switch and the third controlled switch to turn off, and outputs the atomization drive signal to control the first controlled switch to turn on, so as to detect the voltage at the electrolysis negative electrode plate;

[0047] When the voltage at the negative electrode of the electrolysis unit is detected to be 0, the controller controls the disinfectant generator to stop.

[0048] When the voltage at the negative electrode of the electrolysis is detected to be non-zero, the controller controls the disinfectant generator to enter the electrolysis stage.

[0049] Thus, before entering the electrolysis stage, the controller uses the electrolysis negative electrode plate as a liquid level probe to detect the liquid level signal, ensuring that the disinfectant water generator can electrolyze and prepare disinfectant water in the presence of electrolyte, ensuring the safe operation of the disinfectant water generator, and preventing the ultrasonic microporous atomizing plate from dry burning.

[0050] In one alternative implementation, during the atomization stage, the method further includes:

[0051] The controller adjusts the frequency of the atomization drive signal based on the voltage detection result of the voltage detection circuit until the frequency of the atomization drive signal is adjusted to the optimal resonant frequency of the ultrasonic microporous atomizing plate.

[0052] By adjusting the frequency according to the detected voltage signal, the ultrasonic microporous atomizing plate can be ensured to work at the optimal resonant frequency, thereby improving the atomization effect.

[0053] In one optional implementation, the controller adjusts the frequency of the atomization drive signal based on the voltage detection result of the voltage detection circuit, including:

[0054] The controller gradually adjusts the frequency of the atomization drive signal within a preset optimal resonant frequency range;

[0055] The controller extracts the target frequency corresponding to the minimum voltage value from the voltage detection results corresponding to different frequencies, and maintains the frequency of the atomization drive signal at the target frequency.

[0056] By finding the target frequency corresponding to the minimum voltage through frequency searching, the ultrasonic microporous atomizing plate can be kept working at the optimal resonant frequency to achieve the best atomization effect and improve the user experience.

[0057] In one alternative implementation, during the electrolysis stage, the method further includes:

[0058] The controller determines whether the electrolysis stage is complete based on the current detection result of the second current detection circuit, the duration of the disinfectant generator entering the electrolysis stage, or the concentration of disinfectant obtained by the disinfectant generator through electrolysis.

[0059] When the electrolysis stage is completed, the controller controls the disinfectant generator to exit the electrolysis stage and enter the atomization stage.

[0060] This allows for automated and precise control of the disinfectant preparation and atomization processes in the disinfectant generator through the controller, thereby enhancing the intelligence level of the disinfectant generator and improving the user experience.

[0061] In one optional implementation, the controller determines whether the electrolysis stage is complete based on the current detection result of the second current detection circuit, the duration of the disinfectant generator entering the electrolysis stage, or the concentration of disinfectant obtained by the disinfectant generator through electrolysis, including:

[0062] The controller determines that the electrolysis stage is complete when it detects that the current accumulation result of the second current detection circuit is greater than the preset current accumulation value, or when it detects that the duration of the disinfectant generator entering the electrolysis stage has reached the preset duration, or when it detects that the concentration of the disinfectant obtained by the disinfectant generator through electrolysis has reached the preset concentration threshold.

[0063] By utilizing the current signal of the third controlled switch, the electrolysis duration, or the concentration of disinfectant during the electrolysis process, it can be determined whether the electrolysis stage is complete, thereby achieving automated and precise control of the disinfectant preparation and atomization processes in the disinfectant generator, improving the intelligence level of the disinfectant generator, and enhancing the user experience.

[0064] In an optional implementation, the method further includes:

[0065] During the electrolysis stage, the controller turns on the fourth controlled switch;

[0066] During the atomization stage, the controller shuts off the fourth controlled switch.

[0067] By controlling the switching state of the fourth controlled switch during the electrolysis and atomization stages, the controller provides current protection for the inductor and extends its service life. Attached Figure Description

[0068] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0069] Figure 1 This is a schematic diagram of the structure of a disinfectant water manufacturing machine according to an embodiment of the present invention;

[0070] Figure 2This is a top view of an ultrasonic microporous atomizing sheet according to an embodiment of the present invention;

[0071] Figure 3 This is a side view of an ultrasonic microporous atomizing sheet according to an embodiment of the present invention;

[0072] Figure 4 This is a schematic diagram of the atomization control circuit according to an embodiment of the present invention;

[0073] Figure 5 This is a schematic diagram of the electrolysis control circuit according to an embodiment of the present invention;

[0074] Figure 6 This is a flowchart of a control method for a disinfectant generator according to an embodiment of the present invention;

[0075] Figure 7 This is a schematic diagram of the operation process of the disinfectant water generator in the electrolysis stage according to an embodiment of the present invention;

[0076] Figure 8 This is a schematic flowchart illustrating the operation of a disinfectant generator during the atomization stage according to an embodiment of the present invention. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0078] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0079] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0080] Sodium hypochlorite solution is widely used as a disinfectant for routine disinfection because it can disinfect by destroying the cell membranes, somatic proteins, and nucleic acids of microorganisms. Existing disinfectant generators typically prepare sodium hypochlorite by electrolyzing saline solution. The resulting disinfectant is then atomized using a spray nozzle driven by a squeeze or water pump to disinfect the environment. However, these generators require separate electrolysis and atomization devices, resulting in complex structures that hinder miniaturization.

[0081] In addition, the existing disinfectant spraying methods use traditional squeezing or water pump-driven nozzle spraying methods. The spray particles are also prone to uneven mist size due to different squeezing force. At the same time, the atomized particles are relatively coarse, the sprayed mist area is limited, and the disinfection effect is not good.

[0082] According to an embodiment of the present invention, an embodiment of a disinfectant water manufacturing machine is provided, such as... Figure 1 As shown, the disinfectant generator includes: a receiving cavity 101, an electrolytic negative electrode 103, and an ultrasonic microporous atomizing plate 102. The receiving cavity 101 contains an electrolyte 104 required for preparing the disinfectant. The ultrasonic microporous atomizing plate 102 is disposed on the cavity of the receiving cavity 101 and communicates with the outside. The disinfectant generator also includes: an electrolytic atomization control circuit. Figure 1 (Not shown in the image); the electrolytic negative electrode 103 is located in the receiving cavity 101 and is positioned opposite to the ultrasonic microporous atomizing plate 102; the surface of the metal sheet 22 of the ultrasonic microporous atomizing plate 102 is made of a metal material to prevent electrolytic corrosion; the electrolytic atomization control circuit is connected to the ultrasonic microporous atomizing plate 102 and the electrolytic negative electrode 103, and is used to control the ultrasonic microporous atomizing plate 102 and the electrolytic negative electrode 103 to electrolyze the electrolyte 104 to obtain disinfectant water, and to control the ultrasonic microporous atomizing plate 102 to atomize and spray the disinfectant water.

[0083] In this embodiment of the invention, the electrolyte 104 is a saline solution as an example. NaCl is preferred as the salt, which is non-toxic, stable, and does not easily deteriorate, making it convenient for storage and electrolytic disinfection. Other chlorates, such as KCl and CaCl, can be used as alternatives, but they are not recommended because they may cause certain harm to the human body.

[0084] Thus, by utilizing an ultrasonic microporous atomizing plate 102, which is composed of a metal sheet 22 with a surface made of metal material that is resistant to electrolytic corrosion, and under the control of an electrolytic atomization control circuit, it acts as an electrolytic positive electrode plate in conjunction with an electrolytic negative electrode plate 103 to electrolyze the electrolyte 104 to prepare disinfectant. Under the control of the electrolytic atomization control circuit, the disinfectant is ultrasonically atomized, thereby achieving an integrated design of electrolysis and atomization. There is no need to set up separate electrolysis and atomization devices, which simplifies the structure of the disinfectant water generator and is conducive to the miniaturization design of the equipment. Furthermore, by spraying the disinfectant through the ultrasonic microporous atomizing plate 102, the effective area of ​​the disinfectant can be expanded, the sterilization and disinfection rate can be improved, and the user experience can be enhanced.

[0085] In some alternative implementations, such as Figure 2 and Figure 3 As shown, the ultrasonic microporous atomizing sheet 102 includes a metal sheet 22 and a piezoelectric ceramic sheet 21. The piezoelectric ceramic sheet 21 includes a positive piezoelectric ceramic sheet 211 and a negative piezoelectric ceramic sheet 212, which are annular in structure. The metal sheet 22 is sequentially bonded to the positive and negative piezoelectric ceramic sheets 211 and 212. A microporous region 24 is provided on the metal sheet 22, located in the annular holes of the annular structure. An insulating coating 23 is provided at the annular holes of the positive and negative piezoelectric ceramic sheets 211 and 212. Thus, by providing an insulating coating 23 at the annular holes of the positive and negative piezoelectric ceramic sheets 211 and 212, external electrolysis is avoided when liquid accumulates at the annular holes during electrolysis.

[0086] like Figure 2 As shown, positive electrode solder joints 25 and negative electrode solder joints 26 are provided on the piezoelectric ceramic sheet 21 (positive electrode piezoelectric ceramic sheet 211 and negative electrode piezoelectric ceramic sheet 212) for circuit connection with the aforementioned electrolytic atomization control circuit. The metal sheet 22 is bonded to the positive electrode piezoelectric ceramic sheet 211 and is electrically connected to it. A protrusion is located at the center of the metal sheet 22, and the protrusion has a micropore region 24 at the micrometer scale. The micropore region 24 is provided with several micropores to allow atomized disinfectant water to be sprayed out through the micropores.

[0087] In some optional embodiments, the surface of the metal sheet 22 is coated with a titanium coating. This titanium coating prevents the metal sheet 22 from being electrolytically corroded during electrolysis, thus improving the service life of the ultrasonic microporous atomizing sheet 102. In practical applications, the metal sheet 22 can be made of inexpensive common metals such as iron or aluminum, and the cost of the metal sheet 22 is reduced by applying a titanium coating to its surface. Alternatively, if cost is not a concern, a metal with anti-electrolytic corrosion properties, such as a titanium sheet 22, can be directly selected as the metal sheet 22; however, this invention is not limited to these limitations.

[0088] In some alternative implementations, the electrolytic atomization control circuit includes: a controller, an atomization control circuit, and an electrolysis control circuit; such as Figure 4 As shown, the atomization control circuit includes: an inductor L, a first controlled switch Q1, and a second controlled switch Q2. One end of the inductor L is externally connected to a power supply Ui, and the other end is connected to the positive terminal of the ultrasonic microporous atomizing plate 102 and the first output terminal of the first controlled switch Q1, respectively. The control terminal of the first controlled switch Q1 is connected to the controller ( Figure 4 The first output terminal (not shown in the image) is connected to receive the atomization drive signal from the controller (i.e., Figure 4 The PWM drive in the controller has its second output terminal grounded, and the control terminal of the second controlled switch Q2 is connected to the second output terminal of the controller to receive the atomization electrolysis switching signal from the controller (i.e., Figure 4 Switch 1) has its first output terminal connected to the negative terminal of the ultrasonic microporous atomizing plate 102, and its second output terminal grounded; Figure 5 As shown, the electrolysis control circuit includes: a third controlled switch Q3, the control terminal of the third controlled switch Q3 being connected to the controller ( Figure 5 The third output terminal (not shown in the diagram) is connected to receive the electrolysis control signal from the controller (i.e., Figure 5 Switch 2), the first output terminal is connected to the electrolytic negative electrode 103, and the second output terminal is grounded.

[0089] Specifically, the controller mentioned above can be a control chip with specific signal processing functions, such as a microcontroller or microprocessor, but this invention is not limited thereto.

[0090] By using the controller to output different control signals to the atomization control circuit and the electrolysis control circuit, the on and off of the atomization control circuit and the electrolysis control circuit are controlled, so as to realize the reuse of the ultrasonic microporous atomizing plate 102 in the electrolysis process and the atomization process. While simplifying the structure of the disinfectant water manufacturing machine, it realizes precise control of disinfectant water preparation and atomization disinfection, improves the intelligence level of the disinfectant water manufacturing machine, and further enhances the user experience.

[0091] In some optional embodiments, the atomization control circuit further includes: an electrolytic capacitor C1, a first voltage divider circuit, and a second voltage divider circuit; one end of the electrolytic capacitor C1 is connected to the power supply Ui, and the other end is grounded; the voltage input terminal of the first voltage divider circuit is connected to the first output terminal of the controller, and the voltage output terminal is connected to the control terminal of the first controlled switch Q1; the voltage input terminal of the second voltage divider circuit is connected to the second output terminal of the controller, and the voltage output terminal is connected to the control terminal of the second controlled switch Q2.

[0092] Specifically, such as Figure 4 As shown, the first voltage divider circuit consists of the fourth resistor R1 and the fifth resistor R2, and the second voltage divider circuit consists of the sixth resistor R3 and the seventh resistor R4.

[0093] Therefore, by setting up an electrolytic capacitor C1 to store electrical energy, an auxiliary power supply is provided for the disinfectant water generator. By setting up a first voltage divider circuit and a second voltage divider circuit, voltage signals that meet the switching requirements of the first controlled switch Q1 and the second controlled switch Q2 are provided.

[0094] In some alternative implementations, such as Figure 4 As shown, the atomization control circuit also includes a fourth controlled switch S1. The control terminal of the fourth controlled switch S1 is connected to the controller, and the first output terminal and the second output terminal are respectively connected to the two ends of the inductor L. Thus, by setting the fourth controlled switch S1 to conduct during the electrolysis stage of the disinfectant generator, the inductor L is protected, preventing the current flowing into the inductor L from exceeding its maximum current limit and causing damage. Exemplarily, the fourth controlled switch S1 can be a normally open controlled switch, such as a normally open relay, a transistor, etc., but the present invention is not limited thereto.

[0095] In some alternative implementations, the atomization control circuit further includes: a voltage detection circuit and / or a first current detection circuit;

[0096] The input terminal of the voltage detection circuit is connected to one end of the inductor L, and the output terminal is connected to the voltage input terminal of the controller (i.e., Figure 4 The controller adjusts the frequency of the atomization drive signal based on the voltage detection result of the voltage detection circuit (connected to the voltage detection circuit).

[0097] The input terminal of the first current detection circuit is connected to the second output terminal of the first controlled switch Q1, and the output terminal is connected to the first current detection input terminal of the controller (i.e., Figure 4 The current detection circuit 1) is connected, and the controller adjusts the duty cycle of the atomization drive signal according to the current detection result of the first current detection circuit.

[0098] By setting a voltage detection circuit and / or a first current detection circuit, the frequency and / or duty cycle of the atomization drive signal can be adjusted to ensure that the atomization drive signal meets the atomization requirements of the ultrasonic microporous atomizing plate 102, thereby improving the working performance of the ultrasonic microporous atomizing plate 102 and achieving the best atomization effect.

[0099] In some alternative implementations, such as Figure 4 As shown, the atomization control circuit also includes a Zener diode DZ1, the inverting input terminal of which is connected to the positive terminal of the ultrasonic microporous atomizing plate 102, and the inverting input terminal is grounded.

[0100] By setting a Zener diode DZ1, the voltage across the ultrasonic microporous atomizing plate 102 is ensured not to exceed its withstand voltage value, thus providing overvoltage protection for the ultrasonic microporous atomizing plate 102.

[0101] In one alternative implementation, such as Figure 5 As shown, the electrolysis control circuit also includes: a first capacitor C2 and a liquid level detection circuit 201;

[0102] One end of the first capacitor C2 is connected to the electrolytic negative electrode 103, and the other end is connected to the input terminal of the liquid level detection circuit 201. The output terminal of the liquid level detection circuit 201 is connected to the liquid level detection input terminal of the controller (i.e., Figure 5 (Connect to the water level detection port in the middle).

[0103] By setting the first capacitor C2 to isolate the DC signal on the side of the electrolytic negative electrode 103, and by using the electrolytic negative electrode 103 as a water detection probe to realize the liquid level detection function, the disinfectant generator is prevented from operating without electrolyte 104 and the ultrasonic microporous atomizing plate 102 is prevented from burning dry.

[0104] In some optional embodiments, the electrolysis control circuit further includes: a second current detection circuit, the input of which is connected to the second output of the third controlled switch Q3, and the output of which is connected to the second current detection input of the controller (i.e., Figure 5 The current detection circuit 3) is connected, and the controller generates an atomization electrolysis switching signal based on the current detection result of the second current detection circuit.

[0105] By setting the current detection signal of the second current detection circuit, the preparation progress of the disinfectant water is determined, and then the controller realizes the automatic start and stop of the disinfectant water preparation, thereby realizing the automated and precise control of the disinfection stage and the atomization stage, and further improving the user experience.

[0106] In one optional embodiment, the electrolysis control circuit further includes a third voltage divider circuit, the voltage input terminal of which is connected to the third output terminal of the controller, and the voltage output terminal of which is connected to the control terminal of the third controlled switch Q3.

[0107] Specifically, such as Figure 5 As shown, the third voltage divider circuit is composed of the eighth resistor R5 and the ninth resistor R6.

[0108] Thus, by setting up a third voltage divider circuit, a voltage signal that meets the switching requirements of the third controlled switch Q3 is provided.

[0109] In some alternative implementations, such as Figure 5 As shown, the liquid level detection circuit 201 includes: a first resistor R7, a second resistor R8, a third resistor R9, a first diode D1, a second diode D2, and a second capacitor C3.

[0110] One end of the first resistor R7 is connected to the other end of the first capacitor C2, the inverting input of the first diode D1, and the forward input of the second diode D2, respectively. The other end is connected to the forward input of the first diode D1 and then grounded.

[0111] The inverting input terminal of the second diode D2 is connected to one end of the second resistor R8. The other end of the second resistor R8 is connected to one end of the third resistor R9, one end of the second capacitor C3, and the liquid level detection input terminal of the controller. The other end of the third resistor R9 is connected to the other end of the second capacitor C3 and then grounded.

[0112] The liquid level in the accommodating cavity 101 is detected by a voltage divider circuit consisting of the first resistor R7, the second resistor R8, and the third resistor R9. The first diode D1 and the second diode D2 provide freewheeling, and the second capacitor C3 filters the liquid level to ensure the accuracy of the detection results.

[0113] In some alternative implementations, the first controlled switch Q1, the second controlled switch Q2, and the third controlled switch Q3 are all NMOS transistors.

[0114] Therefore, by using NMOS transistors to control the circuit's operating state, the cost is low and the stability and accuracy of circuit control are good.

[0115] Furthermore, in practical applications, the first controlled switch Q1, the second controlled switch Q2, and the third controlled switch Q3 can also be devices with switching functions such as IGBTs, optocouplers, and relays, and this invention is not limited thereto.

[0116] This invention also provides a control method for a disinfectant generator, applied to the disinfectant generator provided in the above embodiments, such as... Figure 6 As shown, the control method includes:

[0117] In step S601, during the electrolysis stage, the controller stops outputting the atomization drive signal and the atomization electrolysis switching signal to control the first and second controlled switches to turn off, and outputs an electrolysis control signal to control the third controlled switch to turn on, so as to use the ultrasonic microporous atomizing plate as the positive and negative electrode plates of electrolysis to electrolyze the electrolyte and obtain disinfectant water.

[0118] Among them, the atomization drive signal is a PWM wave of a certain frequency. The initial frequency of the PWM wave can be set according to the optimal resonant frequency specified in the design specifications of the ultrasonic microporous atomizing plate. The electrolysis control signal and the atomization electrolysis switching signal are high-level signals.

[0119] In step S602, during the atomization stage, the controller outputs an atomization drive signal and an atomization electrolysis switching signal to control the first and second controlled switches to be turned on, and stops outputting an electrolysis control signal to control the third controlled switch to be turned off, so as to use the ultrasonic microporous atomizing plate to atomize the disinfectant water, and spray the atomized disinfectant water out through the micropores on the ultrasonic microporous atomizing plate.

[0120] By utilizing the controller to output different control signals to the atomization control circuit and the electrolysis control circuit during the electrolysis and atomization stages, the ultrasonic microporous atomizing plate can be used as both an electrolysis positive electrode and an atomizing plate, achieving integrated design and precise control of electrolysis and atomization. Furthermore, by spraying the disinfectant through the ultrasonic microporous atomizing plate, the effective area of ​​the disinfectant can be expanded, the sterilization rate can be improved, and the user experience can be enhanced.

[0121] Specifically, in practical applications, during the electrolysis stage, the controller turns on the fourth controlled switch. During the atomization stage, the controller turns off the fourth controlled switch.

[0122] By controlling the switching state of the fourth controlled switch during the electrolysis and atomization stages, the controller provides current protection for the inductor and extends its service life.

[0123] In some alternative implementations, the control method further includes, prior to entering the electrolysis stage:

[0124] Step a1: The controller stops outputting the atomization-electrolysis switching signal and the electrolysis control signal to control the second and third controlled switches to turn off, and outputs the atomization drive signal to control the first controlled switch to turn on, so as to detect the voltage at the electrolysis negative electrode.

[0125] Specifically, the voltage at the negative electrode of the electrolysis is collected through the liquid level detection circuit described above.

[0126] Step a2: When the voltage at the negative electrode of the electrolysis is detected to be 0, the controller controls the disinfectant generator to stop.

[0127] Specifically, when the voltage at the negative electrode plate of the electrolysis is 0, it means that there is no liquid in the containment cavity, the machine stops working, and an alarm is issued by sound or light to remind the user that there is no electrolyte and to replenish the electrolyte.

[0128] Step a3: When the voltage at the negative electrode of the electrolysis is detected to be non-zero, the controller controls the disinfectant generator to enter the electrolysis stage and executes the above step S601.

[0129] Specifically, when the voltage at the negative electrode of the electrolysis unit is not zero, it indicates that there is liquid in the containment cavity, and the electrolysis process can begin.

[0130] Therefore, before entering the electrolysis stage, the controller uses the electrolysis negative electrode plate as a liquid level probe to detect the liquid level signal, ensuring that the disinfectant water generator can electrolyze and prepare disinfectant water in the presence of electrolyte, thus ensuring the safe operation of the disinfectant water generator.

[0131] In some optional implementations, during the atomization stage, the above control method further includes:

[0132] Step b1: The controller adjusts the frequency of the atomization drive signal according to the voltage detection result of the voltage detection circuit until the frequency of the atomization drive signal is adjusted to the optimal resonant frequency of the ultrasonic microporous atomizing plate.

[0133] By adjusting the frequency according to the detected voltage signal, the ultrasonic microporous atomizing plate can be ensured to work at the optimal resonant frequency, thereby improving the atomization effect.

[0134] Specifically, step b1 includes: the controller gradually adjusts the frequency of the atomization drive signal within a preset optimal resonant frequency range; the controller extracts the target frequency corresponding to the minimum voltage value from the voltage detection results corresponding to different frequencies, and maintains the frequency of the atomization drive signal at the target frequency.

[0135] The preset optimal resonant frequency range can be set according to the optimal resonant frequency specified in the design specifications of the ultrasonic microporous atomizing plate. Assuming the optimal resonant frequency specified in the design specifications of the ultrasonic microporous atomizing plate is f0, and since the actual optimal resonant frequency of the ultrasonic microporous atomizing plate is near the specified optimal resonant frequency, the preset optimal resonant frequency range can be set to (f0-10kHz, f0+10kHz) for frequency searching within this range. The specific frequency searching method can be a step-by-step approach, such as increasing Δf each time from f0-10kHz until stopping at f0+10kHz. Alternatively, the frequency can be randomly set within this range until a certain number of frequency settings are reached. This invention is not limited to these methods.

[0136] By finding the target frequency corresponding to the minimum voltage through frequency searching, the ultrasonic microporous atomizing plate can be kept working at the optimal resonant frequency to achieve the best atomization effect and improve the user experience.

[0137] In some alternative implementations, during the electrolysis stage, the above control method further includes:

[0138] Step c1: The controller determines whether the electrolysis stage is complete based on the current detection result of the second current detection circuit, the duration of the disinfectant generator entering the electrolysis stage, or the concentration of disinfectant obtained by the disinfectant generator through electrolysis.

[0139] Specifically, step c1 includes: when the controller detects that the current accumulation result of the current detection result of the second current detection circuit is greater than the preset current accumulation value, or when the controller detects that the duration of the disinfectant water generator entering the electrolysis stage reaches the preset duration, or when the controller detects that the concentration of disinfectant water obtained by the disinfectant water generator through electrolysis reaches the preset concentration threshold, the controller determines that the electrolysis stage is completed.

[0140] In practical applications, taking the determination of whether the electrolysis stage is complete based on the current detection result of the second current detection circuit as an example, the amount of electrolysis can be calculated by the duration of current flow during electrolysis. Utilizing the principle that electrons only move during electrolysis and do not disappear, when the electrolysis voltage is constant, the amount of electrolysis can be estimated by the duration of current flow. For example, Figure 5 The medium current detector 3 collects the current during electrolysis in real time and records the current value In at regular intervals. The current values ​​In are then accumulated to obtain SI. If SI is greater than the set IM value, the disinfectant preparation is considered complete, electrolysis is stopped, and the atomization stage begins.

[0141] By utilizing the current signal of the third controlled switch, the electrolysis duration, or the concentration of disinfectant during the electrolysis process, it can be determined whether the electrolysis stage is complete, thereby achieving automated and precise control of the disinfectant preparation and atomization processes in the disinfectant generator, improving the intelligence level of the disinfectant generator, and enhancing the user experience.

[0142] Step c2: When the electrolysis stage is completed, the controller controls the disinfectant generator to exit the electrolysis stage and enter the atomization stage.

[0143] This allows for automated and precise control of the disinfectant preparation and atomization processes in the disinfectant generator through the controller, thereby enhancing the intelligence level of the disinfectant generator and improving the user experience.

[0144] The working principle and process of the disinfectant generator provided in this embodiment of the invention will be explained in detail below with reference to specific application examples.

[0145] like Figure 2 and Figure 3 As shown, the metal sheet of the ultrasonic microporous atomizing sheet provided in this embodiment of the invention serves as the positive electrode sheet in the electrolysis stage and as the atomizing metal sheet in the atomization stage, while the negative electrode sheet serves as the negative electrode sheet in the electrolysis stage and as the water detection probe in the atomization stage.

[0146] like Figure 4 and Figure 5 As shown, during the electrolysis stage, S1, the positive electrode of the ultrasonic microporous atomizing plate, the negative electrode of the electrolysis plate, and Q3 are working. During the atomization stage, L, Q1, DZ1, WH1, and Q2 are working to atomize the material. The negative electrode of the electrolysis plate, C2, R7, D1, D2, R8, R9, and C3 are working to prevent the ultrasonic microporous atomizing plate from burning dry.

[0147] This invention provides the electrolysis principle of a disinfectant water generator: The electrolysis cell (i.e., the aforementioned containment cavity) contains an ultrasonic microporous atomizing plate (anode, metal plate) and an electrolysis negative electrode plate (cathode, water detection probe). When a direct current or pulsed direct current is applied to the electrolysis cell, positive and negative ions will move in a directed manner. The electrochemical reaction in the electrolysis cell is as follows:

[0148] Anode reaction: 2Cl - +2e - →Cl2

[0149] Cathode reaction: 2H - +2e - →H2

[0150] When the electrolysis reaction produces Cl₂ and H₂, a corresponding solution reaction will occur within the electrolytic cell. The chlorine gas generated at the anode will undergo a hydrolysis reaction with water in the solution to produce hypochlorous acid.

[0151] Cl₂ + H₂O → HClO + HCl

[0152] The H2 produced at the cathode will escape from the electrolytic cell. The remaining OH- and Na+ will combine to form NaOH, increasing the pH of the electrolyte near the cathode. Since there is no membrane between the anode and cathode, as the electrolyte is agitated, NaOH will neutralize with HClO to form NaClO.

[0153] This invention provides an atomization principle for a disinfectant generator: A controller sends a pulse voltage to the positive and negative electrodes of the piezoelectric ceramic plates in an ultrasonic microporous atomizing plate. Due to the voltage difference between the two ceramic plates, deformation occurs, causing them to vibrate at the same frequency as the pulse voltage waveform. The positive piezoelectric ceramic plate adheres to a metal plate with micropores, causing the metal plate to oscillate, and the liquid is ejected through the micropores of the metal plate. The atomization efficiency is highest when the frequency of the pulse voltage is the optimal resonant frequency of the ultrasonic microporous atomizing plate.

[0154] like Figure 7 As shown in the embodiment of the present invention, the electrolysis control process of the disinfectant generator is as follows: During the electrolysis stage, the Ui voltage is applied, the controller starts the PWM drive of the Q1 switch, sets switch 1 to a low level, turns off switch Q2, sets switch 2 to a low level, turns off switch Q3, and the controller monitors the voltage at the water level detection port. If there is no voltage at the water level detection port (i.e., the liquid level detection input terminal of the controller), it means there is no liquid in the atomizing head of the disinfectant generator, the machine stops working, and the user is reminded that there is no liquid. If there is voltage at the water level detection port, it means there is liquid in the atomizing head, and the electrolysis state is entered. S1 is closed, the PWM drive is stopped, switch 2 is set to a high level, the Q3 switch is turned on, and the positive electrode of the ultrasonic microporous atomizing plate is used as the positive electrode for electrolysis, and electrolysis is performed by connecting the positive electrode and the negative electrode. During the electrolysis process, the current detection 3, i.e., the second current detection input terminal of the controller, collects the current during electrolysis in real time, records the current value In at regular intervals, and accumulates the current value In to obtain SI. If SI is greater than the set IM value, electrolysis will stop and the atomization stage will begin.

[0155] like Figure 8 As shown in the embodiment of the present invention, the atomization control process of the disinfectant generator is as follows: During the atomization stage, contact S1 is open, inductor L operates, switch 1 is set to a high level, switch Q2 is turned on, the negative terminal of the ultrasonic microporous atomizing plate is grounded, switch 2 is set to a low level, switch Q3 is turned off, PWM drive is activated, and the PWM frequency is adjusted downwards from f0+10kHz (f0 is the optimal resonant operating frequency of the ultrasonic microporous atomizing plate specification; due to process reasons, there will often be deviations. In order to ensure that each ultrasonic microporous atomizing plate works at the optimal resonant point, frequency searching is performed). The frequency is adjusted by incrementing the voltage at the voltage detection port (i.e., the voltage input terminal of the controller) until f0-10kHz. The voltage value at point A is read and recorded when the voltage at point A reaches its minimum value. The PWM drive frequency is adjusted downwards from f`+3kHz in increments of Δf` (Δf`<Δf) until f`-3kHz. The frequency f`` at the minimum voltage at point A is read simultaneously. At this point, f`` is the optimal resonant operating frequency of this ultrasonic microporous atomizing sheet. Atomization is performed according to this atomization frequency in subsequent atomization processes.

[0156] For example, the voltage V at point A is monitored and recorded in real time by the controller. i When the driving frequency is close to the optimal resonant frequency, V i+1 <V i When the driving frequency is far from the optimal resonant frequency, V i+1 >V i The algorithm described above can be used to determine when the voltage reaches its minimum value.

[0157] This invention improves the spraying method of the disinfectant generator to achieve ultrasonic atomization, with atomized particles reaching the μm level. The disinfectant has a wide distribution area, ensuring full contact with microorganisms and effectively increasing the sterilization rate. This makes it suitable not only for daily disinfection but also for use in cutting board sterilizers (cabinets), tableware sterilization, etc., thereby increasing the sterilization rate and expanding the product's application scenarios.

[0158] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A sterilizing water producing machine comprising: The application relates to a disinfectant water maker, which comprises a containing cavity, an electrolytic negative sheet and an ultrasonic micro-hole atomization sheet, the containing cavity contains electrolyte required for preparing disinfectant water, the ultrasonic micro-hole atomization sheet is arranged on the cavity of the containing cavity and communicates with the outside, and the disinfectant water maker further comprises an electrolytic atomization control circuit. The electrolytic negative sheet is arranged in the containing cavity and opposite to the ultrasonic micro-hole atomization sheet. The surface of the metal sheet of the ultrasonic micro-hole atomization sheet is made of metal material which can prevent electrolytic corrosion. The electrolytic atomization control circuit is connected with the ultrasonic micro-hole atomization sheet and the electrolytic negative sheet, and is used for controlling the ultrasonic micro-hole atomization sheet and the electrolytic negative sheet to electrolyze the electrolyte to obtain disinfectant water and controlling the ultrasonic micro-hole atomization sheet to atomize and spray the disinfectant water. The electrolytic atomization control circuit comprises a controller, an atomization control circuit and an electrolysis control circuit. The atomization control circuit comprises an inductor, a first controlled switch and a second controlled switch, one end of the inductor is connected with a power supply, the other end is connected with the positive pole of the ultrasonic micro-hole atomization sheet and the first output end of the first controlled switch, the control end of the first controlled switch is connected with the first output end of the controller and receives the atomization driving signal of the controller, the second output end of the first controlled switch is grounded, the control end of the second controlled switch is connected with the second output end of the controller and receives the atomization electrolysis switching signal of the controller, the first output end is connected with the negative pole of the ultrasonic micro-hole atomization sheet, and the second output end is grounded. The electrolysis control circuit comprises a third controlled switch, the control end of the third controlled switch is connected with the third output end of the controller and receives the electrolysis control signal of the controller, the first output end is connected with the electrolytic negative sheet, and the second output end is grounded.

2. The sterilizing water producing machine according to claim 1, wherein The atomization control circuit further comprises an electrolytic capacitor, a first voltage dividing circuit and a second voltage dividing circuit. One end of the electrolytic capacitor is connected with the power supply, and the other end is grounded. The voltage input end of the first voltage dividing circuit is connected with the first output end of the controller, and the voltage output end is connected with the control end of the first controlled switch. The voltage input end of the second voltage dividing circuit is connected with the second output end of the controller, and the voltage output end is connected with the control end of the second controlled switch.

3. The sterilizing water producing machine according to claim 1, wherein The atomization control circuit further comprises a fourth controlled switch, the control end of the fourth controlled switch is connected with the controller, and the first output end and the second output end are respectively connected with the two ends of the inductor.

4. The sterilizing water producing machine according to claim 1, wherein The atomization control circuit further comprises a voltage detection circuit and / or a first current detection circuit. The input end of the voltage detection circuit is connected with one end of the inductor, and the output end is connected with the voltage input end of the controller, the controller adjusts the frequency of the atomization driving signal according to the voltage detection result of the voltage detection circuit. The input end of the first current detection circuit is connected with the second output end of the first controlled switch, and the output end is connected with the first current detection input end of the controller, the controller adjusts the duty cycle of the atomization driving signal according to the current detection result of the first current detection circuit.

5. The sterilizing water producing machine according to claim 1, wherein The atomization control circuit further comprises a Zener diode, a reverse input end of the Zener diode being connected with a positive electrode of the ultrasonic microporous atomization sheet, and the reverse input end being grounded.

6. The sterilizing water producing machine according to claim 1, wherein The electrolysis control circuit further comprises a first capacitor and a liquid level detection circuit. One end of the first capacitor is connected with the electrolysis negative electrode sheet, and the other end is connected with an input end of the liquid level detection circuit, and an output end of the liquid level detection circuit is connected with a liquid level detection input end of the controller.

7. The sterilizing water producing machine according to claim 1, wherein The electrolysis control circuit further comprises: A second current detection circuit, an input end of the second current detection circuit being connected with a second output end of the third controlled switch, and an output end of the second current detection circuit being connected with a second current detection input end of the controller, and the controller generating the atomization electrolysis switching signal according to a current detection result of the second current detection circuit.

8. The sterilizing water producing machine according to claim 1, wherein The electrolysis control circuit further comprises: A third voltage division circuit, a voltage input end of the third voltage division circuit being connected with a third output end of the controller, and a voltage output end of the third voltage division circuit being connected with a control end of the third controlled switch.

9. The sterilizing water producing machine according to claim 6, wherein The liquid level detection circuit comprises a first resistor, a second resistor, a third resistor, a first diode, a second diode and a second capacitor. One end of the first resistor is connected with the other end of the first capacitor, a reverse input end of the first diode and a forward input end of the second diode respectively, and the other end of the first resistor is connected with a forward input end of the first diode and then grounded. A reverse input end of the second diode is connected with one end of the second resistor, the other end of the second resistor is connected with one end of the third resistor, one end of the second capacitor and a liquid level detection input end of the controller respectively, and the other end of the third resistor is connected with the other end of the second capacitor and then grounded.

10. The sterilizing water producing machine according to any one of claims 1 to 9, characterized by, The surface of the metal sheet is provided with a titanium coating.

11. The sterilizing water producing machine according to any one of claims 1 to 9, characterized by The ultrasonic microporous atomization sheet further comprises a positive electrode piezoelectric ceramic sheet and a negative electrode piezoelectric ceramic sheet, the positive electrode piezoelectric ceramic sheet and the negative electrode piezoelectric ceramic sheet are annular structures, the metal sheet is sequentially pasted with the positive electrode piezoelectric ceramic sheet and the negative electrode piezoelectric ceramic sheet, the metal sheet is provided with a microporous region, the microporous region is located in a ring hole of the annular structure, and the positive electrode piezoelectric ceramic sheet and the negative electrode piezoelectric ceramic sheet are provided with an insulating coating at the ring hole.

12. The sterilizing water producing machine according to any one of claims 1 to 9, characterized by The first controlled switch, the second controlled switch and the third controlled switch are all NMOS tubes.

13. A control method of a sterilizing water producing machine, applied to the sterilizing water producing machine according to any one of claims 1 to 12, characterized in that, The method comprises: In the electrolysis stage, the controller stops outputting the atomization driving signal and the atomization electrolysis switching signal to control the first controlled switch and the second controlled switch to be turned off, and outputs the electrolysis control signal to control the third controlled switch to be turned on, so as to use the ultrasonic microporous atomization sheet as an electrolysis positive electrode sheet to electrolyze the electrolyte with an electrolysis negative electrode sheet, to obtain the disinfectant water; In the atomization stage, the controller outputs the atomization driving signal and the atomization electrolysis switching signal to control the first controlled switch and the second controlled switch to be turned on, and stops outputting the electrolysis control signal to control the third controlled switch to be turned off, so as to use the ultrasonic microporous atomization sheet to atomize the disinfectant water, and spray the atomized disinfectant water through the micropores on the ultrasonic microporous atomization sheet.

14. The method of claim 13, wherein, Before entering the electrolysis stage, the method further comprises: The controller stops outputting the atomization electrolysis switching signal and the electrolysis control signal to control the second controlled switch and the third controlled switch to be turned off, and outputs the atomization driving signal to control the first controlled switch to be turned on, to detect the voltage at the electrolysis negative plate; When detecting that the voltage at the electrolysis negative plate is 0, the controller controls the disinfectant water maker to stop; When detecting that the voltage at the electrolysis negative plate is not 0, the controller controls the disinfectant water maker to enter the electrolysis stage.

15. The method of claim 13, wherein, In the atomization stage, the method further comprises: The controller adjusts the frequency of the atomization driving signal according to the voltage detection result of the voltage detection circuit until the frequency of the atomization driving signal is adjusted to the optimal resonant frequency of the ultrasonic microporous atomization plate.

16. The method of claim 15, wherein, The controller adjusts the frequency of the atomization driving signal according to the voltage detection result of the voltage detection circuit, comprising: The controller gradually adjusts the frequency of the atomization driving signal within a preset optimal resonant frequency range; The controller extracts a target frequency corresponding to a minimum voltage value from voltage detection results corresponding to different frequencies, and maintains the frequency of the atomization driving signal at the target frequency.

17. The method of claim 13, wherein, In the electrolysis stage, the method further comprises: The controller determines whether the electrolysis stage is completed based on the current detection result of the second current detection circuit or the length of time that the disinfectant water maker enters the electrolysis stage or the concentration of the disinfectant water obtained by electrolysis of the disinfectant water maker; When determining that the electrolysis stage is completed, the controller controls the disinfectant water maker to exit the electrolysis stage and enter the atomization stage.

18. The method of claim 17, wherein, The controller determines whether the electrolysis stage is completed based on the current detection result of the second current detection circuit or the length of time that the disinfectant water maker enters the electrolysis stage or the concentration of the disinfectant water obtained by electrolysis of the disinfectant water maker, comprising: The controller determines that the electrolysis stage is completed when monitoring that the current accumulation result of the current detection result of the second current detection circuit is greater than a preset current accumulation value, or the controller determines that the electrolysis stage is completed when monitoring that the length of time that the disinfectant water maker enters the electrolysis stage reaches a preset length of time, or the controller determines that the electrolysis stage is completed when monitoring that the concentration of the disinfectant water obtained by electrolysis of the disinfectant water maker reaches a preset concentration threshold.

19. The method according to any one of claims 13-18, characterized in that, The method further comprises: In the electrolysis stage, the controller controls the fourth controlled switch to be turned on; In the atomization stage, the controller controls the fourth controlled switch to be turned off.

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