Concentration-controllable electrolytic ozone generation device and implementation method

Abstract

The invention discloses a concentration-controllable electrolytic ozone generating device and an implementation method, the concentration-controllable electrolytic ozone generating device comprises a power adjusting module, a data processing module and a data setting module, an EN terminal of the power adjusting module is connected with a PWM terminal of the data processing module, and the data processing module communicates with the data setting module through Bluetooth. The ozone generator has the advantages that the power of the ozone generation module can be adjusted to generate the ozone generation speed matched with the power according to different water conductivities in the ozone generation device, meanwhile, the water temperature in the electrolysis process is monitored, ozone decomposition consumption is supplemented according to half-life period values of ozone decomposition at different temperatures, and the ozone generation efficiency is improved. And the ozone water concentration is kept constant for a long time.

Description

Technical Field

[0001] The present invention is an electrolytic ozone generation device with controllable concentration and an implementation method, belonging to the technical field of water treatment. Background Art

[0002] Ozone has strong oxidizing properties and has a spectrum of bactericidal and disinfection effects. It can kill bacterial vegetative cells, spores, viruses, fungi, etc., can destroy botulinum toxin, and also has a strong effect of removing odors such as mildew, fishy smell, and stench. It has been increasingly widely used in industries such as disinfection, water treatment, medicine and health, and food preservation.

[0003] The concentration of ozone aqueous solution in water is an important indicator to measure the dissolved amount of ozone in water, usually expressed in mg / L (milligrams per liter) or ppm (parts per million). 1 mg / L is equal to 1 ppm. The concentration of ozone aqueous solution is not the higher the better. Excessive concentration may lead to increased energy consumption, rising treatment costs, and even have a negative impact on the environment and human health.

[0004] For ozone water directly contacted by the human body, the concentration of ozone aqueous solution generally should not be greater than 10 mg / L, otherwise it may cause harm to the human lungs. The following are the common ozone water concentrations for different uses:

[0005] Disinfection of domestic drinking water: ozone aqueous solution concentration of 0.3 ppm to 0.5 ppm;

[0006] Medical treatment water in medical institutions: ozone aqueous solution concentration of 0.5 ppm to 1.5 ppm;

[0007] Hospital sewage treatment: ozone aqueous solution concentration of 10 ppm to 15 ppm;

[0008] Water disinfection in public places: ozone aqueous solution concentration of 1 ppm to 3 ppm;

[0009] The molecular structure of ozone is unstable. It decomposes more easily in water than in air. At room temperature, the half-life in ozone aqueous solution is about 16 minutes, and the higher the temperature, the shorter the half-life.

[0010] Ozone is mainly prepared by electrolyzing water with low-voltage direct current. During the electrolysis process, water molecules are ionized into hydrogen ions and hydroxide ions. The hydrogen ions gain electrons at the cathode and are reduced to hydrogen gas and released, while the hydroxide ions lose electrons at the anode to generate oxygen atoms, and these oxygen atoms further combine with other oxygen molecules to form ozone.

[0011] The technology of preparing ozone by low-voltage direct current electrolysis can be used in portable ozone water equipment to prepare an aqueous solution containing ozone for different bactericidal and disinfection purposes.

[0012] Existing portable ozone water equipment uses a rechargeable lithium battery as a DC power supply. The DC 3V to 5V power supply input voltage is increased to an output voltage of several tens of volts through a DC boost module. The output voltage is applied to the cathode and anode electrodes of the electrolysis. Water undergoes an oxidation reaction at the interface between the anode and the solution to produce ozone. However, the portable ozone water equipment in the existing technology cannot accurately control the concentration of the ozone water. If the ozone concentration is too low, the disinfection effect will not be achieved, and if the concentration of the ozone water solution is too high, it will be harmful to the human body. Due to differences in water quality, the conductivity is different. The higher the conductivity, the higher the ozone water concentration, while the lower the conductivity, the lower the ozone water concentration. Electrolysis causes the water temperature to increase, which accelerates the decomposition of ozone in the water, and the concentration of the ozone water gradually decreases. Summary of the Invention

[0013] The technical problem to be solved by the present invention is to address the above shortcomings and provide a concentration-controllable electrolytic ozone generator and an implementation method. The device can adjust the power of the ozone generating module to produce an ozone generation speed that matches the different water conductivity in the ozone generating device, monitor the water temperature during the electrolysis process, and replenish the decomposition consumption of ozone according to the half-life value of ozone decomposition at different temperatures, so that the concentration of ozone water remains constant for a long time.

[0014] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0015] A concentration-controllable electrolytic ozone generator includes a power adjustment module, a data processing module and a data setting module. The EN terminal of the power adjustment module is connected to the PWM terminal of the data processing module. The data processing module and the data setting module communicate with each other using Bluetooth.

[0016] Furthermore, the VIN terminal of the power adjustment module and the VIN terminal of the data processing module are connected to one end of a capacitor C1 and the positive electrode of a power supply, and the other end of the capacitor C1 is connected to the negative electrode of the power supply and grounded.

[0017] Furthermore, the SW terminal of the power adjustment module is connected to the positive electrode of the Schottky diode D1, the negative electrode of the Schottky diode D1 is connected to one end of the capacitor C2, one end of the capacitor C3, one end of the resistor R1, the anode of the electrolysis electrode EP1 and one end of the resistor R3, the GND terminal of the power adjustment module, the other end of the capacitor C2, the other end of the capacitor C3 and the cathode of the electrolysis electrode EP1 are grounded, the capacitor C2 is a high-frequency filtering capacitor, the capacitor C1 is a low-frequency filtering capacitor, the other end of the resistor R1 is connected to one end of the resistor R2 and the OVP terminal of the power adjustment module, the other end of the resistor R2 is grounded, the other end of the resistor R3 is connected to one end of the conductivity detection electrode CP1 and the FB terminal of the power adjustment module, and the other end of the conductivity detection electrode CP1 is grounded.

[0018] Furthermore, the TMP terminal of the data processing module is connected to a temperature sensor, and the temperature sensor is connected to the positive pole of the power supply.

[0019] Further, the data calibration module communicates with the data analysis module via Bluetooth. The data of the ozone aqueous solution concentration attenuation and temperature curve graph is imported through the data calibration module. The setting of the ozone aqueous solution concentration is set in the data calibration module via Bluetooth. The result of the data calibration is imported through the data calibration module.

[0020] A method for realizing an electrolytic ozone generation device with controllable concentration, including a method for keeping the ozone generation rate constant under different water qualities, and the specific steps are as follows:

[0021] The anode of the electrolytic electrode EP1 is connected to the positive pole of the output voltage, and the cathode is connected to the negative pole of the output voltage. Water molecules are ionized into hydrogen ions and hydroxide ions during electrolysis. The hydrogen ions gain electrons at the cathode and are reduced to release hydrogen gas, while the hydroxide ions lose electrons at the anode to generate oxygen atoms. These oxygen atoms further combine with other oxygen molecules to form ozone. The output of ozone is proportional to the current density of the electrolytic electrode EP1.

[0022] The conductivity detection electrode CP1 and the resistor R3 are connected in series to form a voltage division sampling circuit. The FB terminal of the power adjustment module is connected between the conductivity detection electrode CP1 and the resistor R3. When the water quality difference causes different conductivities, the voltage across the conductivity detection electrode CP1 changes accordingly. The input voltage of the FB terminal of the power adjustment module changes, and the power adjustment module adjusts the output voltage to keep the current density of the electrolytic electrode EP1 constant.

[0023] Further, the method for keeping the ozone generation rate constant under different water qualities further includes the following steps:

[0024] Suppose in the case of water quality No. 1, the output voltage of the power adjustment module is V1, the resistance of the water detected by the conductivity detection electrode CP1 is △R1, and the current flowing through the electrode CP1

[0025] When changing to water quality No. 2, if the output of the power adjustment module remains unchanged and the voltage is still V1, due to the change in the conductivity of water quality No. 2, the resistance detected by the conductivity detection electrode CP1 is △R2, and the current flowing through the electrode CP1

[0026] The function of the FB terminal of the power adjustment module is to adjust the output voltage according to the feedback of the change in its input voltage to keep the output current constant. The principle is as follows:

[0027] In the case of water quality No. 1, the input voltage of the FB terminal of the power adjustment module is In the case of water quality No. 2, the input voltage of the FB terminal of the power adjustment module is Due to the different resistance values of △R1 and △R2, there is a difference between U1 and U2, that is By adjusting the output voltage of the power adjustment module to adjust V1 to V2, we have: By dynamically adjusting the output voltage V2 of the power adjustment module through negative feedback to make ΔU = 0, it is possible to ensure that the current density of the electrolysis electrode EP1 is the same in two types of water quality.

[0028] Furthermore, the implementation method further includes a method for compensating for ozone decomposition at different water temperatures to maintain the concentration of the ozone aqueous solution, specifically including the following steps:

[0029] Through the ozone aqueous solution concentration attenuation and temperature curve graph, obtain the half-life of the ozone aqueous solution concentration at different water temperatures, and adjust the ozone generation rate in real time through temperature detection, continuously supplement and offset the attenuation of the ozone aqueous solution concentration to keep the ozone aqueous solution concentration constant;

[0030] Given the ozone half-life T at a certain water temperature, in the first half-life, the concentration of the ozone aqueous solution becomes half, and in the second half-life, the concentration of the ozone aqueous solution becomes one-fourth. Using the decay coefficient K to represent the proportion of the substance eliminated per unit time, we have the formula:

[0031] Assume the original concentration is C0, then per unit time, the attenuated concentration C1 = (1 - K) * C0;

[0032] To maintain the concentration of the ozone aqueous solution unchanged, it is necessary to increase the ozone generation rate to supplement the consumption of ozone decomposition. The proportion of the speed increase is

[0033] The PWM terminal of the data analysis module is connected to the EN terminal of the power adjustment module. When the PWM terminal of the data analysis module is at a high level, that is, when the EN terminal of the power adjustment module is at a high level, the power adjustment module has an output voltage. On the contrary, when the EN terminal of the power adjustment module is at a low level, the power adjustment module has no output. That is to say, by adjusting the PWM duty cycle, the average output power of the power adjustment module can be adjusted, and the ozone generation rate can be adjusted.

[0034] Furthermore, the method for compensating for ozone decomposition at different water temperatures to maintain the concentration of the ozone aqueous solution further includes the following steps:

[0035] The data analysis module collects the temperature sensor signal in real time through the TMP terminal, obtains the half-life T of the ozone aqueous solution concentration at the water temperature of this sampling period through the known ozone aqueous solution concentration attenuation and temperature curve graph, and calculates the lifting coefficient of the PWM duty cycle

[0036] To compensate for the influence of temperature change on the concentration of ozone aqueous solution, during the first sampling period to the Nth sampling period at the beginning of electrolysis, the PWM duty cycle is continuously and cyclically adjusted. The PWM duty cycle adjusted in each sampling period is: the PWM duty cycle output by the data analysis module in the previous sampling period × D, until the concentration of ozone aqueous solution reaches the set value;

[0037] At this time, if the ozone production stops, the concentration of ozone will gradually decrease due to decomposition. To maintain the concentration, the power adjustment module switches to the low-power state. In the first sampling period, the data analysis module obtains the temperature sensor signal through the TMP terminal, calculates the compensation coefficient K of the PWM duty cycle according to the half-life T of the ozone aqueous solution concentration at this water temperature, and adjusts the PWM duty cycle to the PWM duty cycle output by the data analysis module in the previous sampling period × K. By circulating in this way, the concentration of ozone aqueous solution is maintained at the set value for a long time.

[0038] Adopting the above technical solution, compared with the prior art, the present invention has the following technical effects:

[0039] It can adjust the power of the ozone generation module according to the different water conductivities in the ozone generation device to generate a matching ozone generation rate, and at the same time monitor the water temperature during the electrolysis process. According to the half-life values of ozone decomposition at different temperatures, it supplements the decomposition consumption of ozone, so that the concentration of ozone water remains constant for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0041] Figure 1 It is a structural block diagram of an electrolytic ozone generation device with controllable concentration in the present invention;

[0042] Figure 2 It is the initial concentration and attenuation curve diagram of ozone water at different temperatures in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0043] Embodiment, as Figure 1 shown, an electrolytic ozone generation device with controllable concentration includes a power adjustment module, a data processing module and a data setting module. The EN terminal of the power adjustment module is connected to the PWM terminal of the data processing module, and Bluetooth communication is used between the data processing module and the data setting module.

[0044] The VIN terminal of the power adjustment module and the VIN terminal of the data processing module are connected to one end of a capacitor C1 and the positive pole of the power supply. The other end of the capacitor C1 is connected to the negative pole of the power supply and grounded. The SW terminal of the power adjustment module is connected to the positive pole of a Schottky diode D1. The negative pole of the Schottky diode D1 is connected to one end of a capacitor C2, one end of a capacitor C3, one end of a resistor R1, the anode of an electrolytic electrode EP1, and one end of a resistor R3. The GND terminal of the power adjustment module, the other end of the capacitor C2, the other end of the capacitor C3, and the cathode of the electrolytic electrode EP1 are grounded. The capacitor C2 is a capacitor for high-frequency filtering, and the capacitor C1 is a capacitor for low-frequency filtering. The other end of the resistor R1 is connected to one end of a resistor R2 and the OVP terminal of the power adjustment module. The other end of the resistor R2 is grounded. The other end of the resistor R3 is connected to one end of a conductivity detection electrode CP1 and the FB terminal of the power adjustment module. The other end of the conductivity detection electrode CP1 is grounded.

[0045] The TMP terminal of the data processing module is connected to a temperature sensor, and the temperature sensor is connected to the positive pole of the power supply.

[0046] The DC low-voltage power supply supplies power to the entire circuit through terminals BAT+ and BAT-. The capacitor C1 is connected in parallel across the DC low-voltage power supply. The function of the capacitor C1 is to stabilize the power supply voltage and weaken the voltage fluctuation caused by the internal resistance of the DC low-voltage power supply.

[0047] The power output SW terminal and the GND terminal of the power adjustment module form an output loop. The output terminal SW is externally connected to a Schottky diode D1. The function of the Schottky D1 is to prevent the reverse induced electromotive force generated at the output terminal from entering the power adjustment module and causing interference. The high-frequency filtering capacitor C2 and the low-frequency filtering capacitor C3 are connected in parallel to smooth the output voltage curve. The function of the capacitor C2 is to filter high-frequency interference signals, and the function of the capacitor C3 is to filter low-frequency electromagnetic interference signals. The resistors R1 and R2 are connected in series to form a voltage division sampling circuit. The overvoltage detection OVP terminal is connected between the resistors R1 and R2. When overvoltage occurs and the output voltage abnormally increases, the sampling voltage across the resistor R2 is higher than the threshold, the input voltage of the OVP terminal is higher than the threshold, and the power adjustment module is in an overvoltage alarm state and stops working.

[0048] A method for realizing an electrolytic ozone generation device with controllable concentration includes the following steps:

[0049] Method for keeping the ozone generation rate constant under different water qualities:

[0050] Due to different water qualities and different conductivities, if the electrolysis power is not adjusted, the current density between the electrolytic electrodes will change, resulting in different ozone generation rates and differences in the concentration of the ozone aqueous solution. The present invention can adjust the electrolysis power according to the conductivity of the water to keep the current density constant and the ozone generation rate constant. The specific steps are as follows:

[0051] The anode of the electrolysis electrode EP1 is connected to the positive pole of the output voltage, and the cathode is connected to the negative pole of the output voltage. During the electrolysis process, water molecules are ionized into hydrogen ions and hydroxide ions. The hydrogen ions gain electrons at the cathode and are reduced to release hydrogen gas, while the hydroxide ions lose electrons at the anode to form oxygen atoms. These oxygen atoms further combine with other oxygen molecules to form ozone. The output of ozone is proportional to the current density of the electrolysis electrode EP1.

[0052] The conductivity detection electrode CP1 and the resistor R3 are connected in series to form a voltage division sampling circuit. The FB terminal of the power adjustment module is connected between the conductivity detection electrode CP1 and the resistor R3. When the water quality difference causes different conductivities, the voltage across the conductivity detection electrode CP1 changes accordingly. The input voltage of the FB terminal of the power adjustment module changes, and the power adjustment module adjusts the output voltage to keep the current density of the electrolysis electrode EP1 constant.

[0053] Suppose in the case of water quality 1#, the output voltage of the power adjustment module is V1, the resistance of the water detected by the conductivity detection electrode CP1 is △R1, and the current flowing through the electrode CP1

[0054] When the water quality is changed to 2#, if the output of the power adjustment module remains unchanged and the voltage is still V1, due to the change in the conductivity of the water quality 2#, the resistance detected by the conductivity detection electrode CP1 is △R2, and the current flowing through the electrode CP1

[0055] Because the resistance values of △R1 and △R2 are different, the currents A1 and A2 of the conductivity detection electrode CP1 are different; similarly, the current densities of the electrolysis electrode EP1 in the two water qualities are also different, resulting in different speeds of ozone generation.

[0056] To achieve the same ozone generation speed in water with different conductivities, it is necessary to ensure that the current densities of the electrolysis electrode EP1 in the two water qualities are the same, that is, to adjust the output voltage according to the change in conductivity.

[0057] The function of the FB terminal of the power adjustment module is to adjust the output voltage according to the feedback of its input voltage change to keep the output current constant. The principle is as follows:

[0058] In the case of water quality 1#, the input voltage of the FB terminal of the power adjustment module is In the case of water quality 2#, the input voltage of the FB terminal of the power adjustment module is Because the resistance values of △R1 and △R2 are different, there is a difference between U1 and U2, that is By adjusting the output voltage of the power adjustment module, adjusting V1 to V2, then there is: By dynamically adjusting the output voltage V2 of the power adjustment module through negative feedback to make ΔU = 0, the current density of the electrolysis electrode EP1 in the two water qualities can be ensured to be the same;

[0059] Further, by adjusting the resistance value of resistor R3, the voltage adjustment ratio at the FB terminal of the power adjustment module can be changed to set the rated value of the ozone generation speed.

[0060] Method for compensating ozone decomposition at different water temperatures to maintain the concentration of ozone aqueous solution:

[0061] At the beginning of electrolysis, due to the thermal effect of water resistance, the water temperature changes, first rises and then gradually reaches a constant value (heat release and heat dissipation balance). At the end of electrolysis, the water temperature gradually decreases;

[0062] Due to the instability of the ozone molecular structure, its decomposition rate is different at different water temperatures. If the ozone generation speed is not adjusted to dynamically compensate for ozone decomposition, the concentration of the ozone aqueous solution will inevitably be uncontrollable;

[0063] The present invention obtains the half-life of the ozone aqueous solution concentration at different water temperatures through a well-known attenuation curve graph of the ozone aqueous solution concentration and temperature, such as Figure 2 shown. By detecting the temperature in real time, the ozone generation speed is adjusted to continuously supplement and offset the attenuation of the ozone aqueous solution concentration, so that the concentration of the ozone aqueous solution is maintained constant. The analysis is as follows:

[0064] Given the ozone half-life T at a certain water temperature, in the first half-life, the concentration of the ozone aqueous solution becomes half, and in the second half-life, the concentration of the ozone aqueous solution becomes one-fourth. Using the attenuation coefficient K to represent the proportion of substances eliminated per unit time, there is a formula:

[0065] Assuming the original concentration is C0, then per unit time, the attenuated concentration C1 = (1 - K) * C0.

[0066] To maintain the concentration of the ozone aqueous solution unchanged, it is necessary to increase the ozone generation speed to supplement the consumption of ozone decomposition. The proportion of the speed increase is

[0067] The specific adjustment steps are as follows:

[0068] The PWM terminal of the data analysis module is connected to the EN terminal of the power adjustment module. When the PWM terminal of the data analysis module is at a high level, that is, when the EN terminal of the power adjustment module is at a high level, the power adjustment module has an output voltage. On the contrary, when the EN terminal of the power adjustment module is at a low level, the power adjustment module has no output. That is to say, by adjusting the PWM duty cycle, the average output power of the power adjustment module can be adjusted to adjust the ozone generation speed.

[0069] The data analysis module collects the temperature sensor signals in real time through the TMP terminal, obtains the half-life T of the ozone aqueous solution concentration at the water temperature in this sampling period through the well-known ozone aqueous solution concentration attenuation and temperature curve graph, and calculates the boost coefficient of the PWM duty cycle.

[0070] To compensate for the influence of temperature change on the ozone aqueous solution concentration, from the first sampling period to the Nth sampling period at the beginning of electrolysis, the PWM duty cycle is continuously adjusted in a loop. The PWM duty cycle adjusted in each sampling period is: the PWM duty cycle output by the data analysis module in the previous sampling period × D, until the ozone aqueous solution concentration reaches the set value.

[0071] At this time, if the ozone production stops, the ozone concentration will gradually decrease due to decomposition. To maintain the concentration, the power adjustment module switches to the low-power state. In the first sampling period, the data analysis module obtains the temperature sensor signal through the TMP terminal, calculates the compensation coefficient K of the PWM duty cycle according to the half-life T of the ozone aqueous solution concentration at this water temperature, and adjusts the PWM duty cycle to the PWM duty cycle output by the data analysis module in the previous sampling period × K. In this way, in the long term, the ozone aqueous solution concentration is maintained at the set value.

[0072] For example:

[0073] Suppose to prepare an ozone water with a concentration of 9 ppm. In the ideal state, that is, ignoring ozone decomposition (for example, at 0 °C, ozone decomposes very slowly), the data analysis module outputs a PWM duty cycle of 50%. At 5 minutes, the ozone aqueous solution concentration reaches 9 ppm. At this time, the power adjustment module stops output, and the 9 ppm concentration remains unchanged.

[0074] In actual situations, as electrolysis proceeds, the water temperature changes. First, it gradually increases, and after reaching a high temperature value, it remains constant (heat release and heat dissipation are balanced). When the ozone aqueous solution concentration reaches the point where the power adjustment module stops output, the water temperature gradually decreases and remains constant after reaching a low temperature value.

[0075] To compensate for the influence of temperature change on the ozone aqueous solution concentration, in the first sampling period at the beginning of electrolysis, the data analysis module obtains the temperature sensor signal through the TMP terminal, calculates the boost coefficient of the PWM duty cycle according to the half-life T1 of the ozone aqueous solution concentration at this water temperature. Adjust the PWM duty cycle to PWM1 = 50% × D1.

[0076] In the second sampling period, the data analysis module obtains the temperature sensor signal through the TMP terminal, calculates the boost coefficient of the PWM duty cycle according to the half-life T2 of the ozone aqueous solution concentration at this water temperature. Adjust the PWM duty cycle to PWM2 = PWM1 × D2.

[0077] And so on. In the nth sampling period, the data analysis module obtains the temperature sensor signal through the TMP terminal, and calculates the boost coefficient of the PWM duty cycle according to the half-life period Tn of the ozone aqueous solution concentration at this water temperature. Adjust the PWM duty cycle to PWM n = PWM n-1 × Dn.

[0078] After the above cycle of adjusting the PWM duty cycle, at 5 minutes, the concentration of the ozone aqueous solution reaches the set value of 9 ppm.

[0079] At this time, if the ozone production stops, the ozone concentration will gradually decrease due to decomposition. To maintain the concentration, the power adjustment module switches to the low-power state. In the first sampling period, the data analysis module obtains the temperature sensor signal through the TMP terminal, and calculates the compensation coefficient of the PWM duty cycle according to the half-life period T1 of the ozone aqueous solution concentration at this water temperature. Adjust the PWM duty cycle to PWM 11 = 50% × K1.

[0080] In the second sampling period, the data analysis module obtains the temperature sensor signal through the TMP terminal, and calculates the compensation coefficient of the PWM duty cycle according to the half-life period T2 of the ozone aqueous solution concentration at this water temperature. Adjust the PWM duty cycle to PWM 12 = PWM 11 × K2.

[0081] And so on. In the nth sampling period, the data analysis module obtains the temperature sensor signal through the TMP terminal, and calculates the compensation coefficient of the PWM duty cycle according to the half-life period Tn of the ozone aqueous solution concentration at this water temperature. Adjust the PWM duty cycle to PWM n = PWM n-1 × Kn.

[0082] By cycling in this way, the concentration of the ozone aqueous solution is maintained at the set value of 9 ppm for a long time.

[0083] The data calibration module communicates with the data analysis module via Bluetooth. The data of the ozone aqueous solution concentration decay and temperature curve graph are imported through the data calibration module; the setting of the ozone aqueous solution concentration is set through the data calibration module via Bluetooth.

[0084] The data calibration module can be a terminal device such as a mobile phone or a laptop with Bluetooth function.

[0085] After the concentration of the ozone water produced by the present invention is inspected by an external precision device, if there is an error, it can be adjusted through the data calibration module to calibrate the concentration of the ozone water.

[0086] The result of data calibration (PWM duty cycle reference value calibration) is imported into the system through the data calibration module.

[0087] For example, for the production of ozone water with a set concentration value of 5 ppm, and the actual concentration detected by an external instrument is 4.5 ppm, then according to the calibration coefficient ZD = 4.5 / 5 = 0.9, the PWM duty cycle input to the EN terminal of the power adjustment module is adjusted through Bluetooth by multiplying by a coefficient of 0.9, and it is continuously detected 3 times to confirm whether the concentration meets the standard.

[0088] The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, and to enable others of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An electrolytic ozone generation device with controllable concentration, characterized in that: It includes a power adjustment module, a data processing module, and a data setting module. The EN terminal of the power adjustment module is connected to the PWM terminal of the data processing module, and Bluetooth is used for communication between the data processing module and the data setting module.

2. The electrolytic ozone generation device with controllable concentration according to claim 1, characterized in that: One end of a capacitor C1 and the positive pole of a power supply are connected to the VIN terminals of the power adjustment module and the data processing module, and the other end of the capacitor C1 is connected to the negative pole of the power supply and grounded.

3. The electrolytic ozone generation device with controllable concentration according to claim 1, characterized in that: The positive pole of a Schottky diode D1 is connected to the SW terminal of the power adjustment module. The negative pole of the Schottky diode D1 is connected to one end of a capacitor C2, one end of a capacitor C3, one end of a resistor R1, the anode of an electrolytic electrode EP1, and one end of a resistor R3. The GND terminal of the power adjustment module, the other end of the capacitor C2, the other end of the capacitor C3, and the cathode of the electrolytic electrode EP1 are grounded. The capacitor C2 is a capacitor for high-frequency filtering, the capacitor C1 is a capacitor for low-frequency filtering. The other end of the resistor R1 is connected to one end of a resistor R2 and the OVP terminal of the power adjustment module. The other end of the resistor R2 is grounded. The other end of the resistor R3 is connected to one end of a conductance detection electrode CP1 and the FB terminal of the power adjustment module, and the other end of the conductance detection electrode CP1 is grounded.

4. The electrolytic ozone generation device with controllable concentration according to claim 1, characterized in that: A temperature sensor is connected to the TMP terminal of the data processing module, and the temperature sensor is connected to the positive pole of the power supply.

5. The electrolytic ozone generation device with controllable concentration according to claim 1, characterized in that: The data setting module communicates with the data analysis module via Bluetooth. The data of the ozone aqueous solution concentration attenuation and temperature curve graph is imported through the data setting module. The setting of the ozone aqueous solution concentration is set in the data setting module via Bluetooth, and the result of the data setting is imported through the data setting module.

6. A method for realizing an electrolytic ozone generation device with controllable concentration, characterized in that: The implementation method is applied to the electrolytic ozone generation device with controllable concentration as described in any one of claims 1-5, and includes a method for keeping the ozone generation rate constant under different water qualities. The specific steps are as follows: The anode of the electrolytic electrode EP1 is connected to the positive pole of the output voltage, and the cathode is connected to the negative pole of the output voltage. Water molecules are ionized into hydrogen ions and hydroxide ions during electrolysis. The hydrogen ions gain electrons at the cathode and are reduced to release hydrogen gas, while the hydroxide ions lose electrons at the anode to generate oxygen atoms. These oxygen atoms further combine with other oxygen molecules to form ozone. The output of ozone is proportional to the current density of the electrolytic electrode EP1. The conductance detection electrode CP1 and the resistor R3 are connected in series to form a voltage division sampling circuit. The FB terminal of the power adjustment module is connected between the conductance detection electrode CP1 and the resistor R3. When the water quality difference causes different conductivities, the voltage across the conductance detection electrode CP1 changes accordingly, and the input voltage of the FB terminal of the power adjustment module changes. The power adjustment module adjusts the output voltage to keep the current density of the electrolytic electrode EP1 constant.

7. The implementation method of an electrolytic ozone generation device with controllable concentration according to claim 6, characterized in that: The method for keeping the ozone generation rate constant under different water qualities further includes the following steps: Suppose that under the water quality condition of No. 1, the output voltage of the power adjustment module is V1, the resistance of the water detected by the conductivity detection electrode CP1 is ΔR1, and the current flowing through the electrode CP1 In the case of replacing the water quality of No. 2, if the output of the power adjustment module remains unchanged and the voltage is still V1, due to the change in the conductivity of the water quality of No. 2, the resistance detected by the conductance detection electrode CP1 is ΔR2, and the current flowing through the electrode CP1 The function of the FB terminal of the power adjustment module is to adjust the output voltage according to the change of its input voltage to keep the output current constant. The principle is as follows: Under the water quality condition 1, the input voltage of the FB terminal of the power adjustment module is Under the water quality condition 2, the input voltage of the FB terminal of the power adjustment module is Due to the different resistances of △R1 and △R2, there is a difference between U1 and U2, that is By adjusting the output voltage of the power adjustment module, adjusting V1 to V2, then we have: By dynamically adjusting the output voltage V2 of the power adjustment module through negative feedback to make ΔU = 0, the same current density of the electrolysis electrode EP1 in the two water qualities can be ensured.

8. The implementation method of an electrolytic ozone generation device with controllable concentration according to claim 6, characterized in that: The implementation method further includes a method for compensating ozone decomposition under different water temperatures to keep the ozone aqueous solution concentration, specifically including the following steps: Obtain the half-life of the ozone aqueous solution concentration at different water temperatures through the ozone aqueous solution concentration decay and temperature curve graph, and adjust the ozone generation rate in real time through temperature detection to continuously supplement and offset the ozone aqueous solution concentration decay, so as to keep the ozone aqueous solution concentration constant; Given the ozone half-life T at a certain water temperature, in the first half-life, the concentration of the ozone aqueous solution becomes half, and in the second half-life, the concentration of the ozone aqueous solution becomes one-fourth. Using the decay coefficient K to represent the proportion of the substance eliminated per unit time, there is a formula: Assume the original concentration is C0. Then, within a unit time, the decayed concentration C1 = (1 - K) * C0; To maintain a constant concentration of ozone in an aqueous solution, it is necessary to increase the ozone generation rate to replenish the consumption of ozone decomposition. The proportion of the increased rate is The PWM terminal of the data analysis module is connected to the EN terminal of the power adjustment module. When the PWM terminal of the data analysis module is at a high level, that is, when the EN terminal of the power adjustment module is at a high level, the power adjustment module has an output voltage. On the contrary, when the EN terminal of the power adjustment module is at a low level, the power adjustment module has no output. That is to say, by adjusting the PWM duty cycle, the average output power of the power adjustment module can be adjusted, and the ozone generation rate can be adjusted.

9. The implementation method of an electrolytic ozone generation device with controllable concentration according to claim 8, characterized in that: The method for compensating ozone decomposition at different water temperatures to maintain the ozone aqueous solution concentration further includes the following steps: The data analysis module collects the temperature sensor signals in real time through the TMP terminal, obtains the half-life T of the ozone aqueous solution concentration at the water temperature in this adoption cycle through the well-known ozone aqueous solution concentration attenuation and temperature curve graph, and calculates the boost coefficient of the PWM duty cycle To compensate for the influence of temperature change on the ozone aqueous solution concentration, from the first sampling period to the Nth sampling period at the beginning of electrolysis, continuously and cyclically adjust the PWM duty cycle. The PWM duty cycle adjusted in each sampling period is: the PWM duty cycle output by the data analysis module in the previous sampling period × D, until the ozone aqueous solution concentration reaches the set value; At this time, if the ozone production stops, the ozone concentration will gradually decrease due to decomposition. To maintain the concentration, the power adjustment module switches to the low-power state. In the first sampling period, the data analysis module obtains the temperature sensor signal through the TMP terminal, calculates the compensation coefficient K of the PWM duty cycle according to the half-life T of the ozone aqueous solution concentration at this water temperature, and adjusts the PWM duty cycle to the PWM duty cycle output by the data analysis module in the previous sampling period × K. By circulating like this, the ozone aqueous solution concentration is maintained at the set value for a long time.

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