Concentration-controllable electrolytic ozone generating device and implementation method

Abstract

This application discloses a concentration-controllable electrolytic ozone generator and its implementation method, including a power adjustment module, a data processing module, and a data tuning module. The EN terminal of the power adjustment module is connected to the PWM terminal of the data processing module, and the data processing module and the data tuning module communicate via Bluetooth. It has the following advantages: it can adjust the power of the ozone generator module to match the ozone generation rate according to the different water conductivity in the ozone generator; simultaneously, it monitors the water temperature during electrolysis and replenishes the ozone decomposition consumption based on the ozone decomposition half-life value at different temperatures, thus maintaining a constant ozone water concentration over a long period.

Description

Technical Field

[0001] This invention relates to a concentration-controllable electrolytic ozone generator and its implementation method, belonging to the field of water treatment technology. Background Technology

[0002] Ozone has strong oxidizing properties and a broad-spectrum bactericidal and disinfecting effect. It can kill vegetative bacteria and spores, viruses, fungi, etc., and can destroy botulinum toxin. It also has a strong effect on removing mold, fishy smells, and other odors. It has increasingly wide applications in industries such as disinfection, water treatment, medicine and health, and food preservation.

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

[0004] For ozone-containing water that comes into direct contact with the human body, the concentration of ozone solution should generally not exceed 10 mg / L, otherwise it may cause damage to the lungs. The following are the common ozone water concentrations for different uses:

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

[0006] Water used for medical treatment: ozone solution concentration of 0.5 ppm to 1.5 ppm;

[0007] Hospital wastewater 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] Ozone molecules are unstable and decompose more readily in water than in air. The half-life of ozone in aqueous solution at room temperature is about 16 minutes, and the higher the temperature, the shorter the half-life.

[0010] The electrolysis method for ozone preparation mainly involves electrolyzing water using low-voltage direct current. During the electrolysis process, water molecules are ionized into hydrogen ions and hydroxide ions. Hydrogen ions gain electrons at the cathode and are reduced to hydrogen gas, while hydroxide ions lose electrons at the anode to generate oxygen atoms. These oxygen atoms then combine with other oxygen molecules to form ozone.

[0011] The ozone preparation technology using low-voltage direct current electrolysis can be used in portable ozone water devices to produce ozone-containing aqueous solutions for various sterilization and disinfection purposes.

[0012] Existing portable ozone water devices use rechargeable lithium batteries as DC power sources. A DC boost module increases the input voltage from 3V to 5V to tens of volts, which is then applied to the cathode and anode of the electrolysis unit. Water undergoes an oxidation reaction at the anode and solution interface to produce ozone. However, current portable ozone water devices cannot precisely control the ozone concentration. Too low a concentration results in ineffective disinfection, while too high a concentration is harmful to humans. Differences in water quality lead to varying conductivity; higher conductivity results in higher ozone concentrations, and vice versa. Electrolysis also raises the water temperature, accelerating ozone decomposition and causing a gradual decrease in ozone concentration. Summary of the Invention

[0013] The technical problem to be solved by the present invention is to provide an electrolytic ozone generator and method with controllable concentration, which can adjust the power of the ozone generator module to produce ozone generation rate that matches the different water conductivity in the ozone generator, while monitoring the water temperature during electrolysis and replenishing the ozone decomposition consumption according to the ozone decomposition half-life value at different temperatures, so that the ozone water concentration remains constant for a long time.

[0014] To solve the above technical problems, the present invention adopts the following technical solution:

[0015] An electrolytic ozone generator 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 the data processing module and the data setting module communicate via 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 capacitor C1 and the positive terminal of the power supply, and the other end of capacitor C1 is connected to the negative terminal of the power supply and grounded.

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

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

[0019] Furthermore, the data tuning module communicates with the data analysis module via Bluetooth. Data on the ozone solution concentration decay and temperature curve are imported through the data tuning module. The ozone solution concentration is set in the data tuning module via Bluetooth, and the data tuning results are imported through the data tuning module.

[0020] A method for implementing an electrolytic ozone generator with controllable concentration includes a method for maintaining a constant ozone generation rate under different water qualities, the specific steps of which are as follows:

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

[0022] The conductivity detection electrode CP1 and resistor R3 are connected in series to form a voltage divider sampling circuit. The FB terminal of the power adjustment module is connected between the conductivity detection electrode CP1 and resistor R3. When the conductivity is different due to water quality differences, 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.

[0023] Furthermore, the method for maintaining a constant ozone generation rate under different water qualities also includes the following steps:

[0024] Assuming water quality condition #1, the power adjustment module output voltage is V1, the conductivity detection electrode CP1 detects a water resistance of ΔR1, and the current flowing through electrode CP1 is...

[0025] With the water quality changed to #2, if the power adjustment module output remains unchanged and the voltage is still V1, due to the change in the conductivity of water #2, the resistance detected by the conductivity detection electrode CP1 will be ΔR2, and the current flowing through electrode CP1 will be...

[0026] The FB terminal of the power adjustment module is used to adjust the output voltage based on feedback from changes in its input voltage, thereby keeping the output current constant. The principle is as follows:

[0027] Under water quality condition #1, the input voltage of the FB terminal of the power adjustment module is: Under water quality condition #2, the input voltage at the FB terminal of the power adjustment module is: Because the resistances of ΔR1 and ΔR2 are different, there is a difference between U1 and U2, that is... By adjusting the output voltage of the power adjustment module to change V1 to V2, we have: By dynamically adjusting the output voltage V2 of the power adjustment module through negative feedback to make ΔU = 0, the current density of the electrolytic electrode EP1 can be guaranteed to be the same in both types of water.

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

[0029] By using the ozone solution concentration decay and temperature curve, the half-life of ozone solution concentration at different water temperatures is obtained. The ozone generation rate is adjusted in real time by temperature detection, and continuous replenishment is used to offset the ozone solution concentration decay, so that the ozone solution concentration is kept constant.

[0030] Given the ozone half-life T at a certain water temperature, the concentration of ozone in the aqueous solution is halved in the first half-life and halved in the second half-life. Let the attenuation coefficient K represent the proportion of the substance eliminated per unit time. Then, the formula is:

[0031] Let the original concentration be C0, then the concentration after decay per unit time is C1 = (1-K)*C0;

[0032] To maintain a constant concentration of ozone in an aqueous solution, the rate of ozone generation needs to be increased to compensate for the ozone decomposition. The percentage increase in rate 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 high, that is, when the EN terminal of the power adjustment module is high, the power adjustment module has an output voltage. Conversely, when the EN terminal of the power adjustment module is low, the power adjustment module has no output. In other words, by adjusting the PWM duty cycle, the average output power of the power adjustment module can be adjusted, thereby regulating the ozone generation rate.

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

[0035] The data analysis module acquires temperature sensor signals in real time via the TMP terminal. Using a known ozone solution concentration decay and temperature curve, it obtains the ozone solution concentration half-life T at the water temperature for that usage cycle and calculates the PWM duty cycle boost factor.

[0036] To compensate for the impact of temperature changes on the concentration of ozone solution, the PWM duty cycle is continuously adjusted from the first sampling cycle to the Nth sampling cycle after the start of electrolysis. The PWM duty cycle is adjusted in each sampling cycle as: the PWM duty cycle output by the data analysis module of the previous sampling cycle × D, until the concentration of ozone solution reaches the set value.

[0037] At this point, if ozone production is stopped, the ozone concentration will gradually decrease due to decomposition. To maintain the concentration, the power adjustment module switches to a low-power state. During the first sampling cycle, the data analysis module acquires the temperature sensor signal through the TMP terminal. Based on the half-life T of the ozone solution concentration at that water temperature, it calculates the compensation coefficient K of the PWM duty cycle and adjusts the PWM duty cycle to the PWM duty cycle output by the data analysis module of the previous sampling cycle × K. This cycle repeats, and the ozone solution concentration is maintained at the set value for a long time.

[0038] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0039] It can adjust the power of the ozone generation module to produce ozone generation rate that matches the different water conductivity in the ozone generator. At the same time, it monitors the water temperature during electrolysis and replenishes the ozone decomposition consumption according to the ozone decomposition half-life value at different temperatures, so that the ozone water concentration remains constant for a long time. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. 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 scale.

[0041] Figure 1 This is a structural block diagram of the electrolytic ozone generator with controllable concentration in this invention;

[0042] Figure 2 This is a graph showing the initial concentration and decay curves of ozone water at different temperatures in this invention. Detailed Implementation

[0043] Examples, such as Figure 1 As shown, an electrolytic ozone generator 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 the data processing module and the data setting module communicate via Bluetooth.

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

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

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

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

[0048] A method for implementing a concentration-controllable electrolytic ozone generator includes the following steps:

[0049] Methods to maintain a constant ozone production rate under different water qualities:

[0050] Because water quality varies and conductivity differs, if the electrolysis power is not adjusted, the current density between the electrolysis electrodes will change, resulting in different ozone generation rates and thus differences in ozone concentration in the aqueous solution. This invention can adjust the electrolysis power according to the water's conductivity to keep the current density constant and maintain a constant ozone generation rate. The specific steps are as follows:

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

[0052] The conductivity detection electrode CP1 and resistor R3 are connected in series to form a voltage divider sampling circuit. The FB terminal of the power adjustment module is connected between the conductivity detection electrode CP1 and resistor R3. When the conductivity is different due to water quality differences, 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] Assuming water quality condition #1, the power adjustment module output voltage is V1, the conductivity detection electrode CP1 detects a water resistance of ΔR1, and the current flowing through electrode CP1 is...

[0054] With the water quality changed to #2, if the power adjustment module output remains unchanged and the voltage is still V1, due to the change in the conductivity of water #2, the resistance detected by the conductivity detection electrode CP1 will be ΔR2, and the current flowing through electrode CP1 will be...

[0055] Because the resistance values ​​of ΔR1 and ΔR2 are different, the currents A1 and A2 of the conductivity detection electrode CP1 are different; similarly, the current density of the electrolysis electrode EP1 is also different in the two types of water, resulting in different rates of ozone generation.

[0056] To ensure that ozone is generated at the same rate in water with different conductivity, it is necessary to ensure that the current density of the electrolysis electrode EP1 is the same in both types of water, which means that the output voltage needs to be adjusted according to the change in conductivity.

[0057] The FB terminal of the power adjustment module is used to adjust the output voltage based on feedback from changes in its input voltage, thereby keeping the output current constant. The principle is as follows:

[0058] Under water quality condition #1, the input voltage of the FB terminal of the power adjustment module is: Under water quality condition #2, the input voltage at the FB terminal of the power adjustment module is: Because the resistances of ΔR1 and ΔR2 are different, there is a difference between U1 and U2, that is... By adjusting the output voltage of the power adjustment module to change 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 can be ensured that the current density of the electrolytic electrode EP1 is the same in the two types of water.

[0059] Furthermore, by adjusting the resistance value of resistor R3, the voltage adjustment ratio on the FB terminal of the power adjustment module can be changed, thereby setting the rated value of the ozone generation rate.

[0060] Methods to maintain ozone concentration in aqueous solution by compensating for ozone decomposition at different water temperatures:

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

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

[0063] This invention utilizes a known ozone aqueous solution concentration decay and temperature curve, such as... Figure 2 As shown, the half-life of ozone aqueous solution concentration at different water temperatures was obtained. The ozone generation rate was adjusted in real time by temperature detection, continuously replenishing the solution to offset the decrease in ozone concentration and maintaining a constant concentration. The analysis is as follows:

[0064] Given the ozone half-life T at a certain water temperature, the concentration of ozone in the aqueous solution is halved in the first half-life and halved in the second half-life. Let the attenuation coefficient K represent the proportion of the substance eliminated per unit time. Then, the formula is:

[0065] Let the original concentration be C0, then the concentration after decay per unit time is C1 = (1-K)*C0.

[0066] To maintain a constant concentration of ozone in an aqueous solution, the rate of ozone generation needs to be increased to compensate for the ozone decomposition. The percentage increase in rate 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 high, that is, when the EN terminal of the power adjustment module is high, the power adjustment module has an output voltage. Conversely, when the EN terminal of the power adjustment module is low, the power adjustment module has no output. In other words, by adjusting the PWM duty cycle, the average output power of the power adjustment module can be adjusted, thereby regulating the ozone generation rate.

[0069] The data analysis module acquires temperature sensor signals in real time via the TMP terminal. Using a known ozone solution concentration decay and temperature curve, it obtains the ozone solution concentration half-life T at the water temperature for that usage cycle and calculates the PWM duty cycle boost factor.

[0070] To compensate for the impact of temperature changes on the concentration of ozone solution, the PWM duty cycle is continuously adjusted from the first sampling cycle to the Nth sampling cycle after electrolysis begins. The PWM duty cycle is adjusted in each sampling cycle as: the PWM duty cycle output by the data analysis module of the previous sampling cycle × D, until the concentration of ozone solution reaches the set value.

[0071] At this point, if ozone production is stopped, the ozone concentration will gradually decrease due to decomposition. To maintain the concentration, the power adjustment module switches to a low-power state. During the first sampling cycle, the data analysis module acquires the temperature sensor signal through the TMP terminal. Based on the half-life T of the ozone solution concentration at that water temperature, it calculates the compensation coefficient K of the PWM duty cycle and adjusts the PWM duty cycle to the PWM duty cycle output by the data analysis module of the previous sampling cycle × K. This cycle repeats, and the ozone solution concentration is maintained at the set value for a long time.

[0072] For example:

[0073] Suppose an ozone solution with a concentration of 9 ppm is prepared. Under ideal conditions, i.e., ignoring ozone decomposition (e.g., at 0 degrees Celsius, ozone decomposition is very slow), the data analysis module outputs a PWM duty cycle of 50%. After 5 minutes, the concentration of the ozone solution reaches 9 ppm. At this point, the power adjustment module stops outputting, and the concentration of 9 ppm remains unchanged.

[0074] In reality, as electrolysis proceeds, the water temperature changes. It gradually rises first, then remains constant after reaching a high temperature (heat release and heat dissipation are balanced). When the concentration of the ozone solution reaches the point where the power adjustment module stops outputting, the water temperature gradually decreases, then remains constant after reaching a low temperature.

[0075] To compensate for the impact of temperature changes on the concentration of ozone solution, during the first sampling cycle at the start of electrolysis, the data analysis module acquires the temperature sensor signal through the TMP terminal. Based on the half-life T1 of the ozone solution concentration at that water temperature, the boost factor of the PWM duty cycle is calculated. Adjust the PWM duty cycle to PWM1 = 50% × D1.

[0076] During the second sampling period, the data analysis module acquires the temperature sensor signal through the TMP terminal and calculates the boost factor of the PWM duty cycle based on the half-life T2 of the ozone aqueous solution concentration at that water temperature. Adjust the PWM duty cycle to PWM2 = PWM1 × D2.

[0077] Similarly, in the nth sampling period, the data analysis module acquires the temperature sensor signal through the TMP terminal, and calculates the boost factor of the PWM duty cycle based on the half-life Tn of the ozone solution concentration at that water temperature. Adjust the PWM duty cycle to PWM n =PWM n-1 ×Dn.

[0078] After the above cycle is completed and the PWM duty cycle is adjusted, the ozone solution concentration reaches the set value of 9 ppm after 5 minutes.

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

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

[0081] Similarly, during the nth sampling period, the data analysis module acquires the temperature sensor signal through the TMP terminal and calculates the compensation coefficient of the PWM duty cycle based on the half-life Tn of the ozone solution concentration at that water temperature. Adjust the PWM duty cycle to PWM n =PWM n-1 ×Kn.

[0082] This cycle continues, maintaining the ozone solution concentration at the set value of 9 ppm for an extended period of time.

[0083] The data tuning module communicates with the data analysis module via Bluetooth. Data on ozone solution concentration decay and temperature curves are imported through the data tuning module; the ozone solution concentration is set via the data tuning module via Bluetooth.

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

[0085] If there is an error in the concentration of ozone water produced by this invention after it has been tested by external precision equipment, the ozone water concentration can be adjusted and calibrated through the data tuning module.

[0086] The results of data tuning (PWM duty cycle reference value tuning) are imported into the system through the data tuning module.

[0087] For example, if the ozone water is prepared with a set concentration of 5 ppm, and the actual concentration is 4.5 ppm as detected by an external instrument, then according to the setting coefficient ZD = 4.5 / 5 = 0.9, the PWM duty cycle is multiplied by a coefficient of 0.9 by the input of the EN terminal of the power adjustment module via Bluetooth, and the test is performed 3 times to confirm whether the concentration meets the standard.

[0088] The description of this invention is given for illustrative and descriptive purposes only and is not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A concentration-controllable electrolytic ozone generator, 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. The data processing module and the data setting module communicate with each other via Bluetooth. The SW terminal of the power adjustment module is connected to the positive terminal of Schottky diode D1. The negative terminal of Schottky diode D1 is connected to one end of capacitor C2, one end of capacitor C3, one end of resistor R1, the anode of electrolytic electrode EP1, and one end of resistor R3. The GND terminal of the power adjustment module, the other end of capacitor C2, the other end of capacitor C3, and the cathode of electrolytic electrode EP1 are grounded. The other end of resistor R1 is connected to one end of resistor R2 and the OVP terminal of the power adjustment module. The other end of resistor R2 is grounded. The other end of resistor R3 is connected to one end of conductivity detection electrode CP1 and the FB terminal of the power adjustment module. The other end of conductivity detection electrode CP1 is grounded.

2. The concentration-controllable electrolytic ozone generator as described in claim 1, characterized in that: The VIN terminal of the power adjustment module and the VIN terminal of the data processing module are connected to one end of capacitor C1 and the positive terminal of the power supply, and the other end of capacitor C1 is connected to the negative terminal of the power supply and grounded.

3. The concentration-controllable electrolytic ozone generator as described in claim 1, characterized in that: The capacitor C2 is a high-frequency filter capacitor, and the capacitor C1 is a low-frequency filter capacitor.

4. The concentration-controllable electrolytic ozone generator as described in claim 1, characterized in that: The data processing module's TMP terminal is connected to a temperature sensor, which is connected to the positive terminal of the power supply.

5. The concentration-controllable electrolytic ozone generator as described in claim 1, characterized in that: The data tuning module communicates with the data analysis module via Bluetooth. Data on the ozone solution concentration decay and temperature curve are imported through the data tuning module. The ozone solution concentration is set in the data tuning module via Bluetooth. The data tuning results are imported through the data tuning module.

6. A method for implementing a concentration-controllable electrolytic ozone generator, characterized in that: The implementation method is applied to the concentration-controllable electrolytic ozone generator as described in any one of claims 1-5, including a method for maintaining a constant ozone generation rate under different water qualities, the specific steps of which are as follows: The anode of the electrolysis electrode EP1 is connected to the positive terminal of the output voltage, and the cathode is connected to the negative terminal of the output voltage. During the electrolysis process, water molecules are ionized into hydrogen ions and hydroxide ions. Hydrogen ions gain electrons at the cathode and are reduced to hydrogen gas and released, while hydroxide ions lose electrons at the anode to generate oxygen atoms. These oxygen atoms further combine with other oxygen molecules to form ozone. The ozone production is proportional to the current density of the electrolysis electrode EP1. The conductivity detection electrode CP1 and resistor R3 are connected in series to form a voltage divider sampling circuit. The FB terminal of the power adjustment module is connected between the conductivity detection electrode CP1 and resistor R3. When the conductivity is different due to water quality differences, 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.

7. The method for implementing a concentration-controllable electrolytic ozone generator as described in claim 6, characterized in that: The method for maintaining a constant ozone generation rate under different water qualities also includes the following steps: Assuming water quality condition #1, the power adjustment module output voltage is V1, the conductivity detection electrode CP1 detects a water resistance of ΔR1, and the current flowing through electrode CP1 is... ; With the water quality changed to #2, if the power adjustment module output remains unchanged and the voltage is still V1, due to the change in the conductivity of water #2, the resistance detected by the conductivity detection electrode CP1 will be ΔR2, and the current flowing through electrode CP1 will be... ; The FB terminal of the power adjustment module is used to adjust the output voltage based on feedback from changes in its input voltage, thereby keeping the output current constant. The principle is as follows: Under water quality condition #1, the input voltage of the FB terminal of the power adjustment module is: Under water quality condition #2, the input voltage of the FB terminal of the power adjustment module is: Because the resistances of ΔR1 and ΔR2 are different, there is a difference between U1 and U2, that is... By adjusting the output voltage of the power adjustment module to change V1 to V2, we have: The output voltage V2 of the power adjustment module is dynamically adjusted through negative feedback, so that... This ensures that the current density of the electrolysis electrode EP1 is the same in both types of water.

8. The method for implementing a concentration-controllable electrolytic ozone generator as described in claim 6, characterized in that: The implementation method also includes a method for compensating for ozone decomposition at different water temperatures to maintain the concentration of ozone in the aqueous solution, specifically including the following steps: By using the ozone solution concentration decay and temperature curve, the half-life of ozone solution concentration at different water temperatures is obtained. The ozone generation rate is adjusted in real time by temperature detection, and continuous replenishment is used to offset the ozone solution concentration decay, so that the ozone solution concentration is kept constant. Given the ozone half-life T at a certain water temperature, the concentration of ozone in the aqueous solution is halved in the first half-life and halved in the second half-life. Let the attenuation coefficient K represent the proportion of the substance eliminated per unit time. Then, the formula is: ; Let the original concentration be C0, then the concentration after decay per unit time is... ; To maintain a constant concentration of ozone in an aqueous solution, the rate of ozone generation needs to be increased to compensate for the ozone decomposition. The percentage increase in 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 high, that is, when the EN terminal of the power adjustment module is high, the power adjustment module has an output voltage. Conversely, when the EN terminal of the power adjustment module is low, the power adjustment module has no output. In other words, by adjusting the PWM duty cycle, the average output power of the power adjustment module can be adjusted, thereby regulating the ozone generation rate.

9. The method for implementing a concentration-controllable electrolytic ozone generator as described in claim 8, characterized in that: The method for compensating for ozone decomposition at different water temperatures to maintain the concentration of ozone in the aqueous solution further includes the following steps: The data analysis module acquires temperature sensor signals in real time via the TMP terminal. Using a well-known ozone solution concentration decay and temperature curve, it obtains the ozone solution concentration half-life T at the water temperature during the sampling period and calculates the boost factor of the PWM duty cycle. ; To compensate for the impact of temperature changes on the concentration of ozone solution, the PWM duty cycle is continuously adjusted from the first sampling cycle to the Nth sampling cycle after the start of electrolysis. The PWM duty cycle is adjusted in each sampling cycle as: the PWM duty cycle output by the data analysis module of the previous sampling cycle × D, until the concentration of ozone solution reaches the set value. At this point, if ozone production is stopped, the ozone concentration will gradually decrease due to decomposition. To maintain the concentration, the power adjustment module switches to a low-power state. During the first sampling cycle, the data analysis module acquires the temperature sensor signal through the TMP terminal. Based on the half-life T of the ozone solution concentration at that water temperature, it calculates the compensation coefficient K of the PWM duty cycle and adjusts the PWM duty cycle to the PWM duty cycle output by the data analysis module of the previous sampling cycle × K. This cycle repeats, and the ozone solution concentration is maintained at the set value for a long time.

Images