Electrolysis System and Electrolysis Method

Abstract

The present invention discloses an electrolysis system and an electrolysis method. The electrolysis system includes a residual chlorine detector, an electronic control module, and an electrolysis module; the electronic control module is respectively connected to the residual chlorine detector and the electrolysis module, and the residual chlorine detector is arranged in the electrolytic cell; the residual chlorine detector detects the residual chlorine concentration of the electrolyte in the electrolytic cell and sends the residual chlorine concentration to the electronic control module; the electronic control module determines the target electrolysis voltage of the electrolyte according to the residual chlorine concentration and outputs a driving signal corresponding to the target electrolysis voltage to the electrolysis module; the electrolysis module electrolyzes the electrolyte by outputting the target electrolysis voltage according to the driving signal. In the present invention, by detecting the residual chlorine concentration and then determining the corresponding target electrolysis voltage according to different residual chlorine concentrations, disinfection substances of different elements are electrolyzed in the electrolytic cell, so as to meet the disinfection requirements under different residual chlorine concentrations.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic cells, and particularly to an electrolysis system and an electrolysis method. Background Art

[0002] With the rapid development of technology, smart devices have continuously entered households, providing very convenient living services for residents. Whether in the kitchen or the bathroom, the utilization of water resources is more convenient. When using water, there is often a certain amount of bacterial residue in the water-containing containers. For example, the residue in positions such as toilets and washbasins is more obvious.

[0003] Since there is a certain amount of chlorine element in tap water, in positions such as toilets or washbasins, an electrolytic cell can be set up to electrolyze the tap water, and hypochlorous acid with a disinfection and sterilization effect can be obtained to disinfect containers such as toilets or washbasins. Moreover, the electrolyzed water can also disinfect or clean the surfaces of other objects or the ground. However, the water quality in each region is different, and the residual chlorine concentration in tap water varies greatly. And filters are installed in the water pipes of some families, further reducing the chlorine concentration in tap water. At this time, the method of disinfecting by electrolyzing hypochlorous acid is not applicable.

[0004] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of the present invention is to provide an electrolysis system and an electrolysis method, aiming to solve the technical problem of how to meet the disinfection requirements under different residual chlorine concentrations in tap water in the prior art.

[0006] To achieve the above purpose, the present invention provides an electrolysis system, which includes: a residual chlorine detector, an electric control module, and an electrolysis module;

[0007] Among them, the electric control module is respectively connected to the residual chlorine detector and the electrolysis module, and the residual chlorine detector is arranged in the electrolytic cell;

[0008] The residual chlorine detector is used to detect the residual chlorine concentration of the electrolyte in the electrolytic cell and send the residual chlorine concentration to the electric control module;

[0009] The electric control module is used to determine the target electrolysis voltage of the electrolyte according to the residual chlorine concentration and output a driving signal corresponding to the target electrolysis voltage to the electrolysis module;

[0010] The electrolysis module is used to electrolyze the electrolyte by outputting the target electrolysis voltage according to the driving signal.

[0011] Optionally, the electric control module is further used to compare the residual chlorine concentration with a preset concentration;

[0012] The electronic control module is further configured to output a driving signal corresponding to a first electrolysis voltage to the electrolysis module when the residual chlorine concentration is less than the preset concentration.

[0013] Optionally, the electrolysis system further includes: a current detector;

[0014] Wherein, the current detector is respectively connected to the electrolysis module and the electronic control module;

[0015] The electronic control module is further configured to send a current detection signal to the current detector when the residual chlorine concentration is greater than the preset concentration;

[0016] The current detector is configured to detect the current density in the electrolysis module when receiving the current detection signal, and send the current density to the electronic control module;

[0017] The electronic control module is further configured to output a driving signal corresponding to a second electrolysis voltage to the electrolysis module when the current density is greater than the preset current density.

[0018] Optionally, the electronic control module is further configured to output a driving signal corresponding to a third electrolysis voltage to the electrolysis module when the current density is less than the preset current density.

[0019] Optionally, the electrolysis module includes: an adjustable power supply and electrolysis electrodes;

[0020] Wherein, the adjustable power supply is respectively connected to the electronic control module and the electrolysis electrodes;

[0021] The electronic control module is further configured to output a driving signal corresponding to the target electrolysis voltage to the adjustable power supply;

[0022] The adjustable power supply is configured to output the target electrolysis voltage corresponding to the driving signal to the electrolysis electrodes to electrolyze the electrolyte.

[0023] Optionally, the anode of the electrolysis electrode is a copper foam electrode, and the cathode is a glassy carbon electrode;

[0024] The copper foam electrode includes: a copper foam substrate and a doping layer provided on the copper foam substrate;

[0025] The doping layer is composed of copper, tantalum oxide, iridium oxide and / or ruthenium dioxide.

[0026] Optionally, the electrolysis system further includes: a water pump;

[0027] Wherein, the water pump is connected to the electronic control module, and the water outlet of the water pump is connected to the water inlet of the electrolysis cell;

[0028] The electronic control module is further configured to output a start signal to the water pump, so as to enable the water pump to control the flow rate or velocity of the electrolyte.

[0029] In addition, to achieve the above object, the present invention further provides an electrolysis method, which includes:

[0030] Detecting the residual chlorine concentration of the electrolyte in the electrolytic cell;

[0031] Determining the target electrolysis voltage of the electrolyte according to the residual chlorine concentration;

[0032] Electrolyzing the electrolyte according to the target electrolysis voltage.

[0033] Optionally, the step of determining the target electrolysis voltage of the electrolyte according to the residual chlorine concentration includes:

[0034] Comparing the residual chlorine concentration with a preset concentration;

[0035] When the residual chlorine concentration is less than the preset concentration, taking the first electrolysis voltage as the target electrolysis voltage.

[0036] Optionally, after the step of comparing the residual chlorine concentration with the preset concentration, the following steps are further included:

[0037] When the residual chlorine concentration is greater than the preset concentration, detecting the current density in the electrolysis module;

[0038] When the current density is greater than the preset current density, taking the second electrolysis voltage as the target electrolysis voltage, otherwise taking the third electrolysis voltage as the target electrolysis voltage.

[0039] The present invention provides an electrolysis system and an electrolysis method. The electrolysis system includes a residual chlorine detector, an electronic control module, and an electrolysis module; the electronic control module is respectively connected to the residual chlorine detector and the electrolysis module, and the residual chlorine detector is arranged in the electrolytic cell; the residual chlorine detector detects the residual chlorine concentration of the electrolyte in the electrolytic cell and sends the residual chlorine concentration to the electronic control module; the electronic control module determines the target electrolysis voltage of the electrolyte according to the residual chlorine concentration and outputs a drive signal corresponding to the target electrolysis voltage to the electrolysis module; the electrolysis module outputs the target electrolysis voltage according to the drive signal to electrolyze the electrolyte. In the present invention, by detecting the residual chlorine concentration and then determining the corresponding target electrolysis voltage according to different residual chlorine concentrations, disinfection substances of different elements are electrolyzed in the electrolytic cell, so as to meet the disinfection requirements under different residual chlorine concentrations. Description of the Drawings

[0040] Figure 1Structural schematic diagram of the first embodiment of the electrolysis system proposed by the present invention;

[0041] Figure 2 Structural schematic diagram of the second embodiment of the electrolysis system proposed by the present invention;

[0042] Figure 3 Flow schematic diagram of the first embodiment of the electrolysis method proposed by the present invention;

[0043] Figure 4 Flow schematic diagram of the second embodiment of the electrolysis method proposed by the present invention.

[0044] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0045] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] Refer to Figure 1 , Figure 1 is the structural schematic diagram of the first embodiment of the electrolysis system proposed by the present invention. Based on Figure 1 The first embodiment of the electrolysis system of the present invention is proposed.

[0047] In this embodiment, the electrolysis system includes: a residual chlorine detector 10, an electric control module 20, and an electrolysis module 30;

[0048] Among them, the electric control module 20 is respectively connected to the residual chlorine detector 10 and the electrolysis module 30, and the residual chlorine detector 10 is arranged in the electrolytic cell.

[0049] It should be understood that during the electrolysis of tap water, different products are obtained at different electrolysis voltages. For example, the residual chlorine in tap water can undergo an oxidation reaction to generate chlorine gas at the chlorine evolution potential of 1.36V, and the chlorine gas can be further hydrolyzed to form hypochlorous acid. Therefore, by using an electrolysis voltage of 12V, the residual chlorine in tap water can be electrolyzed to form substances such as hypochlorous acid and sodium hypochlorite for disinfection and sterilization. When using electrolysis voltages of other voltage values for electrolysis, the main products are not hypochlorous acid and sodium hypochlorite. When the residual chlorine concentration is sufficient, the residual chlorine in tap water can be directly electrolyzed to disinfect the container; while when the residual chlorine concentration is insufficient, continuous electrolysis will only generate oxygen at the anode and cannot increase the amount of chlorine gas and hypochlorous acid, and the amount of disinfectant generated by electrolysis is limited and cannot achieve the effect of disinfection and sterilization. Among them, the container can be devices such as a water basin or a toilet for storing tap water. Of course, the tap water in the container can be flowing tap water, and it is only necessary to detect the residual chlorine concentration of the tap water upstream of the electrolysis module. Tap water can be the electrolyte in the electrolytic cell (container) of the electrolytic cell.

[0050] It should be noted that different disinfection substances can be electrolyzed according to different electrolysis voltages. Therefore, before electrolysis, it is also necessary to detect the residual chlorine concentration in the electrolyte to determine the electrolysis voltage to be selected. The residual chlorine detector 10 is a detector used to detect the residual chlorine concentration in tap water. In order to ensure the detection accuracy of the residual chlorine detector 10, in this embodiment, the residual chlorine detector 10 needs to be set in the electrolytic cell and be in full contact with the electrolyte. The electronic control module 20 is a module used to control the electrolysis process of the electrolyte. The electronic control module 20 can control parameters such as electrolysis voltage, electrolysis start, cut-off, and water flow during the electrolysis process. The electrolysis module 30 is a component used to electrolyze tap water.

[0051] In this embodiment, the electrolysis module 30 can have two electrolysis modes, namely, an open electrolysis mode and a flowing water electrolysis mode.

[0052] Among them, in the open electrolysis mode, the electrolysis module 30 can include electrode plates and a power supply that provides electrolysis voltage for them. The electrode plates can be fixed by plastic brackets, and the electrolysis module 30 can be freely placed in a container with electrolyte (the electrode plates are in contact with the electrolyte) for electrolysis.

[0053] In the flowing water electrolysis mode, the electrolysis module 30 is formed by plastic encapsulation, and is provided with a water inlet and a water outlet. The plastic is injection-molded to form an inner cavity, and the electrode plates are encapsulated in the plastic inner cavity (connected to the power supply through wiring). When in use, the water inlet of the electrolysis module is connected to the water source. After the inner cavity is filled with water, the electrolysis voltage is turned on. During the electrolysis process, the water source is continuous, and the inner cavity is always in a full water state. The water flowing out from the water outlet is electrolyzed water for disinfection. In this embodiment, it is preferred to use the electrolysis module 30 with the structure of the flowing water electrolysis mode to electrolyze tap water.

[0054] It can be understood that the products obtained by electrolyzing tap water with different electrolysis voltages during the electrolysis process are different. Among them, substances such as hypochlorous acid, ozone, and hydrogen peroxide that may be generated during the electrolysis of tap water all have the function of disinfection. According to the different elements included in the tap water, different disinfection substances can be electrolyzed by adjusting the electrolysis voltage.

[0055] During the specific electrolysis process, the residual chlorine detector 10 can directly detect the residual chlorine concentration in the tap water that has not been electrolyzed in the electrolytic cell, and send the residual chlorine concentration to the electronic control module 20; the electronic control module 20 determines the target electrolysis voltage of the electrolyte according to the residual chlorine concentration, and outputs a drive signal corresponding to the target electrolysis voltage to the electrolysis module 30; the electrolysis module 30 can output the target electrolysis voltage according to the drive signal to electrolyze the electrolyte.

[0056] The residual chlorine concentration refers to the concentration of free residual chlorine and combined residual chlorine in tap water. Free residual chlorine: includes HOCl and OCl-. Combined residual chlorine: includes NH2Cl, NHCl2, NCl3 and other chloramine compounds. During the electrolysis of tap water, the chloride ions in the tap water are first oxidized to chlorine gas, and then the chlorine gas is reduced to hypochlorous acid. When the residual chlorine concentration is greater than a certain value, hypochlorous acid sufficient for disinfection needs can be electrolyzed. When the residual chlorine concentration is too low, the hypochlorous acid electrolyzed cannot meet the disinfection requirements. The target electrolysis voltage is the voltage output by the electrolysis cell during the electrolysis process. In this embodiment, the target electrolysis voltage is related to the residual chlorine concentration. The drive signal is a signal for driving the electrolysis module 30, and the drive signal contains target electrolysis voltage information. When the electrolysis module 30 starts electrolysis, it is necessary to adjust the voltage output by the electrolysis power supply to the corresponding target electrolysis voltage.

[0057] For example, when the residual chlorine detector 10 detects that the residual chlorine concentration in the tap water is greater than 0.15 mg / L, the target electrolysis voltage can be adjusted to 12 V. At this time, the chemical reaction in the electrolysis module 30 is the chlorine evolution reaction occurring at the anode, and the main substance electrolyzed is hypochlorous acid. The hypochlorous acid is used to disinfect containers such as washbasins or toilets. When the residual chlorine detector 10 detects that the residual chlorine concentration in the tap water is less than 0.15 mg / L, the hypochlorous acid electrolyzed by the target electrolysis voltage of 12 V at this time cannot meet the disinfection requirements, and the electrolysis voltage should be adjusted. A target electrolysis voltage of 24 V can be used, and an oxygen evolution reaction occurs at the anode, thereby generating ozone in containers such as washbasins or toilets, and using ozone as the main bactericidal disinfectant.

[0058] Among them, the target electrolysis voltage of 12 V is the electrolysis voltage for generating hypochlorous acid, and the target electrolysis voltage of 24 V is the electrolysis voltage for generating ozone. During the electrolysis process, the target electrolysis voltage can be greater than the corresponding chlorine evolution voltage or ozone evolution voltage within a certain range, but during the chlorine evolution reaction process, the target electrolysis voltage should be less than 24 V.

[0059] In addition, since the chlorine evolution voltage is less than the ozone evolution voltage, and when the residual chlorine concentration is low, the conductivity of the tap water is low, the target electrolysis voltage for generating ozone should be greater than the target electrolysis voltage for generating hypochlorous acid.

[0060] This embodiment provides an electrolysis system, which includes a residual chlorine detector, an electronic control module, and an electrolysis module; the electronic control module is respectively connected to the residual chlorine detector and the electrolysis module, and the residual chlorine detector is arranged in the electrolytic cell; the residual chlorine detector detects the residual chlorine concentration of the electrolyte in the electrolytic cell and sends the residual chlorine concentration to the electronic control module; the electronic control module determines the target electrolysis voltage of the electrolyte according to the residual chlorine concentration and outputs a driving signal corresponding to the target electrolysis voltage to the electrolysis module; the electrolysis module outputs the target electrolysis voltage according to the driving signal to electrolyze the electrolyte. In this embodiment, by detecting the residual chlorine concentration and then determining the corresponding target electrolysis voltage according to different residual chlorine concentrations, disinfection substances of different elements are electrolyzed in the electrolytic cell, so as to meet the disinfection requirements under different residual chlorine concentrations.

[0061] Referring to Figure 2 , Figure 2 FIG. is a schematic structural diagram of the second embodiment of the electrolysis system proposed by the present invention. The second embodiment of the electrolysis system of the present invention is proposed based on the first embodiment of the above electrolysis system.

[0062] In this embodiment, it is necessary to determine the specific target electrolysis voltage according to the residual chlorine concentration in the electrolyte. Therefore, the electronic control module 20 can compare the residual chlorine concentration detected by the residual chlorine detector 10 with a preset concentration; when the residual chlorine concentration is less than the preset concentration, the electronic control module 20 can determine that the residual chlorine concentration in the tap water is insufficient, and thus output a driving signal corresponding to the first electrolysis voltage to the electrolysis module 30. At this time, the electrolysis module 30 uses the first electrolysis voltage to generate in the electrolytic cell: 3H2O → O3 + 6H + + 6e - The oxygen evolution reaction of is carried out, and ozone is precipitated at the anode, and ozone is used as the main disinfectant to disinfect the storage container.

[0063] Among them, the preset concentration is a concentration preset for determining whether the residual chlorine concentration in the tap water meets the disinfection requirements. The preset concentration can be the above 0.15 mg / L. Of course, the preset concentration can also be appropriately adjusted within a small range according to factors such as the volume, shape, and water volume of the storage container. Since the larger the volume of the storage container, the larger the corresponding water storage capacity, but the amount of effective chlorine generated for disinfection within the same electrolysis time remains unchanged. However, due to the increase in the water storage capacity, the concentration of effective chlorine decreases and the disinfection effect decreases. The first electrolysis voltage is the electrolysis voltage for generating ozone, and the first electrolysis voltage can be appropriately greater than the ozone evolution voltage.

[0064] It should be understood that when the residual chlorine concentration is greater than the preset concentration, the residual chlorine in tap water can be electrolyzed to generate hypochlorous acid as the main disinfectant. Since the chlorine evolution voltage of 1.36V is greater than the oxygen evolution voltage of 1.23V, the process of generating oxygen also occurs during the electrolysis of hypochlorous acid: 2H2O → O2 + 4H + + 4e - , the oxygen generated by electrolysis will adsorb on the surface of the electrode plate, causing the current density to decrease, that is, the oxygen bubbles adsorb on the anode, covering the active sites, separating the catalyst from the electrolyte, inhibiting the electrolysis reaction, and causing the continuously decreasing hypochlorous acid generated by electrolysis. Even when the current density is too low, the generated hypochlorous acid can be ignored and the disinfection of the storage container cannot be achieved.

[0065] Therefore, in this embodiment, the electrolysis system further includes: a current detector 40;

[0066] wherein, the current detector 40 is respectively connected to the electrolysis module 30 and the electronic control module 20.

[0067] It should be noted that the current detector 40 is a device for detecting the current density in the electrolysis module 30. The current detector 40 can always be in the startup state and continuously detect the current density during the process of electrolyzing tap water to generate hypochlorous acid. Of course, it can also be started under the control of the electronic control module 20 when it is necessary to electrolyze tap water to generate hypochlorous acid.

[0068] In a specific implementation, the electronic control module 20 can send a current detection signal to the current detector 40 when the residual chlorine concentration is greater than the preset concentration; the current detector 40 can detect the current density in the electrolysis module 30 when receiving the current detection signal, and send the current density to the electronic control module 20; the electronic control module 20 can also output a drive signal corresponding to the second electrolysis voltage to the electrolysis module 30 when the current density is greater than the preset current density, so that the electrolysis module 30 electrolyzes to generate hypochlorous acid as the main disinfectant.

[0069] Among them, the preset current density is a current density preset to determine whether the current density in the electrolysis module 30 meets the electrolysis requirements. When the current density is greater than the preset current density, it will not affect the chlorine evolution process, and the chlorine evolution reaction can continue using the second electrolysis voltage. The second electrolysis voltage is the voltage for electrolyzing to generate hypochlorous acid. The preset current density can be 10mA / cm 2 , and the second electrolysis voltage is between 12V and 24V.

[0070] In addition, the electronic control module 20 can also output a drive signal corresponding to the third electrolysis voltage to the electrolysis module 30 when the current density is less than the preset current density.

[0071] When the current density is less than the preset current density, the current density in the electrolysis module 30 is too small, which has affected the chlorine evolution process. Hypochlorous acid cannot be continuously generated or the concentration of hypochlorous acid generated is too low. At this time, the oxygen on the electrode plate should be processed. When processing the oxygen, the oxygen can be reduced to hydrogen peroxide with a disinfection effect. The reduction process is: O2 + 2e - + 2H + → H2O2.

[0072] The third electrolysis voltage is the voltage for electrolyzing hydrogen peroxide. The standard voltage for generating hydrogen peroxide is between 0.68 - 1.36V. At this time, the third electrolysis voltage can be set to 8V, which can fluctuate within a certain range. For example, the third electrolysis voltage can be between 8V and 12V.

[0073] In addition, during the process of electrolyzing tap water using the third electrolysis voltage, the current density detected by the current detector 40 will gradually increase until the collected current density reaches the preset current density. At this time, the electronic control module 20 determines that the current density meets the condition, that is, the oxygen on the electrode plate will not affect the chlorine evolution process, and the chlorine evolution reaction can be continued using the second electrolysis voltage.

[0074] In addition, in this embodiment, the electrolysis module 30 includes: an adjustable power supply 301 and an electrolysis electrode 302;

[0075] Among them, the adjustable power supply 301 is respectively connected to the electronic control module 20 and the electrolysis electrode 302.

[0076] It should be understood that during the process of electrolyzing tap water, there is a process of adjusting the electrolysis voltage. In this embodiment, the power supply in the electrolysis module 30 can be directly set as the adjustable power supply 301, so as to more conveniently adjust the voltage value of the electrolysis voltage and obtain the corresponding target electrolysis voltage. The electrolysis electrode 302 is arranged in the electrolysis cell, and the electrolyte is electrolyzed according to the target electrolysis voltage output by the adjustable power supply 301.

[0077] In a specific implementation, the electronic control module 20 can directly output the drive signal corresponding to the target electrolysis voltage to the adjustable power supply 301; the adjustable power supply 301 can directly output the target electrolysis voltage corresponding to the drive signal to the electrolysis electrode 302 to electrolyze the electrolyte.

[0078] In this embodiment, the anode of the electrolysis electrode 302 is a copper foam electrode, and the cathode is a glassy carbon electrode;

[0079] The copper foam electrode includes: a copper foam substrate and a doping layer provided on the copper foam substrate;

[0080] The doping layer is composed of copper, tantalum oxide, iridium oxide, and / or ruthenium dioxide.

[0081] It should be understood that the greater the contact between the electrolytic electrode 302 and the electrolyte in the electrolyte, the greater the reaction rate. Therefore, the anode for mainly generating disinfectants can be set as a copper foam electrode. The copper foam electrode can be composed of a copper foam substrate and a doping layer provided on the copper foam substrate. The copper foam substrate is a new type of multifunctional material with a large number of connected or unconnected pores evenly distributed in the copper matrix. The copper foam substrate has good electrical conductivity and ductility, lower preparation cost than nickel foam, better electrical conductivity, and a large specific surface area.

[0082] The doping layer can be formed by mutual doping between copper, tantalum oxide, iridium oxide, and / or ruthenium dioxide materials. The reasonable setting of the electrode materials can not only improve the reaction rate of chemical reactions but also protect the electrodes from being corroded during electrolysis and reduce their service life. Among them, tantalum oxide is Ta2O3.

[0083] Among them, ruthenium dioxide has high chlorine evolution activity and low overpotential, which can effectively improve the rate of the chlorine evolution reaction; iridium oxide can improve the corrosion resistance of the anode and protect the anode; tantalum oxide can cooperate with iridium oxide and ruthenium dioxide to improve the ozone evolution activity, reduce the ozone evolution potential, and enhance the reaction rate of ozone evolution; copper can be electrolytically dissolved to produce copper ions with bactericidal effects, further enhancing the disinfection effect by sterilizing the water body. The specific process is as follows: H2O → H + +OH - ; Cu + 2H + →Cu 2+ +H2;

[0084] In addition, copper can form a solid solution with iridium oxide and ruthenium dioxide, thereby increasing the bonding force between the copper foam substrate and the doping layer and extending the service life of the anode.

[0085] The cathode material can use a glassy carbon electrode. The oxygen generated on the anode during electrolysis can react with hydrogen ions on the glassy carbon electrode to generate hydrogen peroxide, improving the disinfection effect while eliminating oxygen.

[0086] In addition, in this embodiment, the electrolysis system further includes: a water pump 50;

[0087] Among them, the water pump 50 is connected to the electronic control module 20, and the water outlet of the water pump 50 is connected to the water inlet of the electrolytic cell.

[0088] It should be understood that during the electrolysis process, ions in the electrolyte mainly undergo oxidation-reduction reactions on the anode and cathode by moving. The water pump 50 can control the flow rate or flow of the electrolyte, thereby controlling the contact time of reactants (residual chlorine, water molecules, oxygen molecules, etc.) with the electrodes, controlling the reaction efficiency, and affecting the amount of active substances / disinfectants produced.

[0089] In a specific implementation, the electronic control module 20 can output a start signal to the water pump 50 after outputting a drive signal. The water pump 50 starts when receiving this start signal and rotates at a constant rate, thereby controlling the flow rate or flow of the electrolyte to keep the flow rate or flow of the electrolyte stable. Among them, the water pump 50 can be powered by the adjustable power supply 301 in the electrolysis module 30, and of course, it can also be powered by a dedicated water pump power supply, which is not specifically limited here.

[0090] Based on the above electrolysis system, an embodiment of the electrolysis method of the present invention is proposed.

[0091] Refer to Figure 3 , Figure 3 which is a schematic flow chart of the first embodiment of the electrolysis method proposed by the present invention.

[0092] In this embodiment, the electrolysis method includes the following steps:

[0093] Step S10: Detect the residual chlorine concentration of the electrolyte in the electrolytic cell.

[0094] Step S20: Determine the target electrolysis voltage of the electrolyte according to the residual chlorine concentration.

[0095] Step S30: Electrolyze the electrolyte according to the target electrolysis voltage.

[0096] It should be understood that the execution subject of this embodiment can be an electrolysis system, which includes a residual chlorine detector, an electronic control module, an electrolysis module and other structures. Among them, the residual chlorine detector is a detector used to detect the residual chlorine concentration in tap water. In order to ensure the detection accuracy of the residual chlorine detector, in this embodiment, the residual chlorine detector needs to be set in the electrolytic cell and be in full contact with the electrolyte. The electronic control module is a module used to regulate the electrolysis process of the electrolyte. The electrolysis module can regulate parameters such as electrolysis voltage, electrolysis start, cut-off, and water flow during the electrolysis process. The electrolysis module is a component used to electrolyze tap water.

[0097] In this embodiment, the electrolysis module can have two electrolysis modes, namely an open electrolysis mode and a flowing water electrolysis mode.

[0098] Among them, in the open electrolysis mode, the electrolysis module 30 may include electrode plates and a power source that provides an electrolysis voltage for them. The electrode plates can be fixed by plastic brackets, and the electrolysis module can be freely placed in a container with an electrolyte (the electrode plates are in contact with the electrolyte) for electrolysis.

[0099] In the flowing water electrolysis mode, the electrolysis module is formed by plastic encapsulation, and is provided with a water inlet and a water outlet. The plastic is injection-molded to form an inner cavity, and the electrode plates are encapsulated in the plastic inner cavity (connected to the power source through wiring).

[0100] During use, the water inlet of the electrolysis module is connected to a water source. After the inner cavity is filled with water, the electrolysis voltage is turned on. During the electrolysis process, the water source is continuous, and the inner cavity is always in a full water state. The water flowing out of the water outlet is electrolyzed water for disinfection. In this embodiment, it is preferred to use the electrolysis module with the structure of the flowing water electrolysis mode to electrolyze tap water.

[0101] During the electrolysis of tap water, different products are obtained at different electrolysis voltages. For example, the residual chlorine in tap water can undergo an oxidation reaction to generate chlorine gas at the chlorine evolution potential of 1.36V. The chlorine gas can be further hydrolyzed to generate hypochlorous acid. Therefore, by using an electrolysis voltage of 12V, the residual chlorine in tap water can be electrolyzed to form substances such as hypochlorous acid and sodium hypochlorite for disinfection and sterilization. When using electrolysis voltages of other voltage values for electrolysis, the main products are not hypochlorous acid and sodium hypochlorite. When the residual chlorine concentration is sufficient, the residual chlorine in tap water can be directly electrolyzed to disinfect the container; when the residual chlorine concentration is insufficient, continuous electrolysis will only generate oxygen at the anode and cannot increase the amount of chlorine gas and hypochlorous acid. The amount of disinfectant generated by electrolysis is limited and cannot achieve the effect of disinfection and sterilization. Among them, the container can be devices such as a washbasin or a toilet for storing tap water. Of course, the tap water in the container can be flowing tap water, and the residual chlorine concentration of the tap water upstream of the electrolysis module can be detected. Tap water can be the electrolyte in the electrolytic cell (container).

[0102] It can be understood that different products are obtained by electrolyzing tap water with different electrolysis voltages during the electrolysis process. Among them, substances such as hypochlorous acid, ozone, and hydrogen peroxide that may be generated during the electrolysis of tap water all have the function of disinfection. Different disinfection substances can be electrolytically generated by adjusting the electrolysis voltage according to the different elements included in the tap water.

[0103] During the specific electrolysis process, the residual chlorine detector in the electrolysis system can directly detect the residual chlorine concentration in the tap water that has not been electrolyzed in the electrolytic cell, and then the electrolysis system can determine the target electrolysis voltage of the electrolyte according to the residual chlorine concentration, and electrolyze the electrolyte according to the target electrolysis voltage.

[0104] The residual chlorine concentration refers to the concentration of free residual chlorine and combined residual chlorine in tap water. Free residual chlorine: includes HOCl, OCl-, etc. Combined residual chlorine: includes NH2Cl, NHCl2, NCl3 and other chloramine compounds. During the electrolysis of tap water, the chloride ions in the tap water are first oxidized to chlorine gas, and then the chlorine gas is reduced to hypochlorous acid. When the residual chlorine concentration is greater than a certain value, hypochlorous acid that meets the disinfection requirements can be electrolyzed. When the residual chlorine concentration is too low, the electrolyzed hypochlorous acid cannot meet the disinfection requirements. The target electrolysis voltage is the voltage output by the electrolysis cell during the electrolysis process. In this embodiment, the target electrolysis voltage is related to the residual chlorine concentration.

[0105] For example, when the residual chlorine detector detects that the residual chlorine concentration in the tap water is greater than 0.15 mg / L, the target electrolysis voltage can be adjusted to 12V. At this time, the chemical reaction in the electrolysis module is the chlorine evolution reaction occurring at the anode, and the main substance electrolyzed is hypochlorous acid. This hypochlorous acid is used to disinfect containers such as washbasins or toilets. When the residual chlorine detector detects that the residual chlorine concentration in the tap water is less than 0.15 mg / L, the hypochlorous acid electrolyzed at the target electrolysis voltage of 12V at this time cannot meet the disinfection requirements, and the electrolysis voltage should be adjusted. A target electrolysis voltage of 24V can be used, and an oxygen evolution reaction occurs at the anode, thereby generating ozone in containers such as washbasins or toilets, and using ozone as the main bactericidal disinfectant.

[0106] Among them, the target electrolysis voltage of 12V is the chlorine evolution voltage, and the target electrolysis voltage of 24V is the ozone evolution voltage. During the electrolysis process, the target electrolysis voltage can be greater than the corresponding chlorine evolution voltage or ozone evolution voltage within a certain range. However, during the chlorine evolution reaction process, the target electrolysis voltage should be less than 24V.

[0107] In addition, since the chlorine evolution voltage is less than the ozone evolution voltage, and when the residual chlorine concentration is low, the conductivity of the tap water is low, the target electrolysis voltage for generating ozone should be greater than the target electrolysis voltage for generating hypochlorous acid.

[0108] This embodiment provides an electrolysis method, which includes detecting the residual chlorine concentration of the electrolyte in the electrolytic cell. Determining the target electrolysis voltage of the electrolyte according to the residual chlorine concentration. Electrolyzing the electrolyte according to the target electrolysis voltage. In this embodiment, by detecting the residual chlorine concentration and then determining the corresponding target electrolysis voltage according to different residual chlorine concentrations, different elemental disinfection substances are electrolyzed in the electrolytic cell, realizing the satisfaction of disinfection requirements under different residual chlorine concentrations.

[0109] Refer to Figure 4 , Figure 4 is a schematic flow chart of the second embodiment of the electrolysis method proposed by the present invention. Based on the above Figure 3Based on the first embodiment shown, the second embodiment of the electrolysis method of the present invention is proposed.

[0110] In the second embodiment, step S20 specifically includes:

[0111] Step S201: Compare the residual chlorine concentration with a preset concentration;

[0112] Step S202: When the residual chlorine concentration is less than the preset concentration, use the first electrolysis voltage as the target electrolysis voltage.

[0113] Step S203: When the residual chlorine concentration is greater than the preset concentration, detect the current density in the electrolysis module.

[0114] Step S204: When the current density is greater than the preset current density, use the second electrolysis voltage as the target electrolysis voltage; otherwise, use the third electrolysis voltage as the target electrolysis voltage.

[0115] In this embodiment, it is necessary to determine the specific target electrolysis voltage according to the residual chlorine concentration in the electrolyte. Therefore, the electronic control module can compare the residual chlorine concentration detected by the residual chlorine detector with the preset concentration. When the residual chlorine concentration is less than the preset concentration, the electronic control module can determine that the residual chlorine concentration in the tap water is insufficient, and thus output a drive signal corresponding to the first electrolysis voltage to the electrolysis module 30. At this time, the electrolysis module uses the first electrolysis voltage to generate the following reaction in the electrolytic cell: 3H2O → O3 + 6H + + 6e - The oxygen evolution reaction occurs, and ozone is precipitated at the anode. Ozone is used as the main disinfectant to disinfect the storage container.

[0116] Among them, the preset concentration is a concentration preset to determine whether the residual chlorine concentration in the tap water meets the disinfection requirements. This preset concentration can be 0.15 mg / L as mentioned above. Of course, this preset concentration can also be appropriately adjusted within a small range according to factors such as the volume, shape, and water volume of the storage container. Since the larger the volume of the storage container, the greater the corresponding water storage capacity, and at the same residual chlorine concentration, the more hypochlorous acid is generated, so the preset concentration can be adjusted within a small range. The first electrolysis voltage is the electrolysis voltage for generating ozone, and this first electrolysis voltage can be appropriately greater than the ozone evolution voltage.

[0117] It should be understood that when the residual chlorine concentration is greater than the preset concentration, hypochlorous acid can be generated by electrolyzing the chlorine in the tap water and used as the main disinfectant. Since the chlorine evolution voltage of 1.36 V is greater than the oxygen evolution voltage of 1.23 V, during the electrolysis of hypochlorous acid, an oxygen generation process also occurs: 2H2O → O2 + 4H + + 4e -, the oxygen generated by electrolysis will adsorb on the surface of the electrode sheet, causing the current density to decrease, that is, oxygen bubbles adsorb on the anode, covering the active sites, separating the catalyst from the electrolyte, inhibiting the electrolysis reaction, resulting in a continuous decrease in the hypochlorous acid generated by electrolysis. Even when the current density is too low, the generated hypochlorous acid can be ignored, and disinfection of the storage container cannot be achieved.

[0118] In a specific implementation, when the residual chlorine concentration is greater than the preset concentration, the electronic control module can send a current detection signal to the current detector; when receiving the current detection signal, the current detector can detect the current density in the electrolysis module and send the current density to the electronic control module; when the current density is greater than the preset current density, the electronic control module can also output a driving signal corresponding to the second electrolysis voltage to the electrolysis module, so that the electrolysis module electrolyzes to generate hypochlorous acid as the main disinfectant.

[0119] Among them, the preset current density is a current density preset to determine whether the current density in the electrolysis module 30 meets the electrolysis requirements. When the current density is greater than the preset current density, it will not affect the chlorine evolution process, and the chlorine evolution reaction can continue using the second electrolysis voltage. The second electrolysis voltage is the voltage for electrolyzing to generate hypochlorous acid. This preset current density can be 10 mA / cm 2 , and this second electrolysis voltage is between 12 V and 24 V.

[0120] In addition, when the current density is less than the preset current density, the electronic control module can also output a driving signal corresponding to the third electrolysis voltage to the electrolysis module.

[0121] When the current density is less than the preset current density, the current density in the electrolysis module is too small, which has affected the chlorine evolution process and cannot continue to generate hypochlorous acid or the generated hypochlorous acid concentration is too low. At this time, the oxygen on the electrode sheet should be treated. When treating the oxygen, the oxygen can be reduced to hydrogen peroxide with a disinfection effect. The reduction process is: O2 + 2e - + 2H + → H2O2.

[0122] The third electrolysis voltage is the voltage for electrolyzing to generate hydrogen peroxide. The standard voltage for generating hydrogen peroxide is between 0.68 - 1.36 V. At this time, the third electrolysis voltage can be set to 8 V and can fluctuate within a certain range. For example, the third electrolysis voltage can be between 8 V and 12 V.

[0123] During the process of electrolyzing tap water using the third electrolysis voltage, the current density detected by the current detector will gradually increase until the collected current density reaches the preset current density. At this time, the electronic control module determines that the current density meets the condition, that is, the oxygen on the electrode plate will not affect the chlorine evolution process, and the chlorine evolution reaction can continue using the second electrolysis voltage.

[0124] In addition, in this embodiment, the adjustable power supply can also be arranged inside the electrolysis module, and the anode of the electrolysis module is a copper foam electrode, and the cathode is a glassy carbon electrode.

[0125] It should be understood that the greater the contact between the electrolysis electrode and the electrolyte in the electrolyte, the greater the reaction rate. Therefore, the anode that mainly generates disinfectants can be set as a copper foam electrode. The copper foam electrode can be composed of a copper foam substrate and a doping layer provided on the copper foam substrate. The copper foam substrate is a new type of multifunctional material with a large number of connected or unconnected pores uniformly distributed in the copper matrix. The copper foam substrate has good electrical conductivity and ductility, lower preparation cost than nickel foam, better electrical conductivity, and a large specific surface area.

[0126] The doping layer can be formed by mutual doping among copper, tantalum oxide, iridium oxide, and / or ruthenium dioxide materials. The reasonable setting of the electrode material can not only improve the reaction rate of chemical reactions but also protect the electrode from being corroded and reduce its service life.

[0127] Among them, ruthenium dioxide has high chlorine evolution activity and low overpotential, which can effectively improve the rate of the chlorine evolution reaction; iridium oxide can improve the corrosion resistance of the anode and protect the anode; tantalum oxide can cooperate with iridium oxide and ruthenium dioxide to improve the activity of ozone evolution, reduce the ozone evolution potential, and enhance the reaction rate of ozone evolution; copper can be electrolytically dissolved to produce bactericidal copper ions, which can sterilize the water body and further improve the disinfection effect. The specific process is as follows: H2O → H + +OH - ; Cu + 2H + →Cu 2+ +H2;

[0128] In addition, copper can form a solid solution with iridium oxide and ruthenium dioxide, thereby increasing the bonding force between the copper foam substrate and the doping layer and extending the service life of the anode.

[0129] The cathode material can use a glassy carbon electrode. The oxygen generated on the anode during electrolysis can react with hydrogen ions on the glassy carbon electrode to generate hydrogen peroxide, which can improve the disinfection effect while eliminating oxygen.

[0130] In addition, after step S30, it further includes:

[0131] Start the water pump so that the water pump controls the flow rate or velocity of the electrolyte.

[0132] During the electrolysis process, the ions in the electrolyte mainly undergo oxidation-reduction reactions on the anode and cathode by moving. The water pump can control the flow rate or flow of the electrolyte, thereby controlling the contact time between the reactants (residual chlorine, water molecules, oxygen molecules, etc.) and the electrodes, controlling the reaction efficiency, and affecting the amount of active substances / disinfectants generated.

[0133] In a specific implementation, after the electronic control module outputs a drive signal, it can output a start signal to the water pump. When the water pump receives this start signal, it starts and rotates at a constant rate, thereby controlling the flow rate or flow of the electrolyte and keeping the flow rate or flow of the electrolyte stable. Among them, the water pump can be powered by an adjustable power supply in the electrolysis module, or of course, it can also be powered by a dedicated water pump power supply, and no specific limitation is made here.

[0134] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or system including that element.

[0135] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments. In the unit claims listing several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order, and these words can be interpreted as names.

[0136] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases, the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as a Read Only Memory image (ROM) / Random Access Memory (RAM), magnetic disk, optical disc), and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0137] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. An electrolysis system, characterized in that, The electrolysis system includes: a residual chlorine detector, an electronic control module, and an electrolysis module; Among them, the electronic control module is respectively connected to the residual chlorine detector and the electrolysis module, and the residual chlorine detector is arranged in the electrolytic cell; The residual chlorine detector is used to detect the residual chlorine concentration of the electrolyte in the electrolytic cell and send the residual chlorine concentration to the electronic control module; The electronic control module is used to determine the target electrolysis voltage of the electrolyte according to the residual chlorine concentration and output a driving signal corresponding to the target electrolysis voltage to the electrolysis module; The electrolysis module is used to electrolyze the electrolyte by outputting the target electrolysis voltage according to the driving signal; The target electrolysis voltage includes: a first electrolysis voltage for electrolyzing to generate ozone, a second electrolysis voltage for electrolyzing to generate hypochlorous acid, and a third electrolysis voltage for electrolyzing to generate hydrogen peroxide.

2. The electrolysis system according to claim 1, wherein The electronic control module is also used to compare the residual chlorine concentration with a preset concentration; The electronic control module is also used to output a driving signal corresponding to the first electrolysis voltage to the electrolysis module when the residual chlorine concentration is less than the preset concentration.

3. The electrolysis system according to claim 2, characterized in that, The electrolysis system further includes: a current detector; Among them, the current detector is respectively connected to the electrolysis module and the electronic control module; The electronic control module is also used to send a current detection signal to the current detector when the residual chlorine concentration is greater than the preset concentration; The current detector is used to detect the current density in the electrolysis module and send the current density to the electronic control module when receiving the current detection signal; The electronic control module is also used to output a driving signal corresponding to the second electrolysis voltage to the electrolysis module when the current density is greater than the preset current density.

4. The electrolysis system according to claim 3, characterized in that, The electronic control module is also used to output a driving signal corresponding to the third electrolysis voltage to the electrolysis module when the current density is less than the preset current density.

5. The electrolysis system according to any one of claims 1-4, characterized in that, The electrolysis module includes: an adjustable power supply and electrolysis electrodes; Among them, the adjustable power supply is respectively connected to the electronic control module and the electrolysis electrodes; The electronic control module is also used to output a driving signal corresponding to the target electrolysis voltage to the adjustable power supply; The adjustable power supply is used to output the target electrolysis voltage corresponding to the driving signal to the electrolysis electrodes to electrolyze the electrolyte.

6. The electrolysis system according to claim 5, characterized in that The anode of the electrolysis electrode is a copper foam electrode, and the cathode is a glassy carbon electrode; The copper foam electrode includes: a copper foam substrate and a doping layer provided on the copper foam substrate; The doping layer is composed of copper, tantalum oxide, iridium oxide, and / or ruthenium dioxide.

7. The electrolysis system according to claim 6, characterized in that, The electrolysis system further includes: a water pump; Among them, the water pump is connected to the electronic control module, and the water outlet of the water pump is connected to the water inlet of the electrolytic cell; The electronic control module is also used to output a start signal to the water pump so that the water pump controls the flow rate or velocity of the electrolyte.

8. An electrolysis method, characterized in that, The electrolysis method is applied to the electrolysis system according to any one of claims 1-7; The electrolysis method includes: Detecting the residual chlorine concentration of the electrolyte in the electrolytic cell; Determining the target electrolysis voltage of the electrolyte according to the residual chlorine concentration; Electrolyzing the electrolyte according to the target electrolysis voltage; The target electrolysis voltage includes: a first electrolysis voltage for electrolytically generating ozone, a second electrolysis voltage for electrolytically generating hypochlorous acid, and a third electrolysis voltage for electrolytically generating hydrogen peroxide.

9. The electrolysis method according to claim 8, characterized in that, The step of determining the target electrolysis voltage of the electrolyte according to the residual chlorine concentration includes: comparing the residual chlorine concentration with a preset concentration; when the residual chlorine concentration is less than the preset concentration, taking the first electrolysis voltage as the target electrolysis voltage.

10. The electrolysis method according to claim 9, characterized in that, After the step of comparing the residual chlorine concentration with the preset concentration, it further includes: when the residual chlorine concentration is greater than the preset concentration, detecting the current density in the electrolysis module; when the current density is greater than the preset current density, taking the second electrolysis voltage as the target electrolysis voltage, otherwise taking the third electrolysis voltage as the target electrolysis voltage.

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