CN110820009A - Sodium hypochlorite generating device regulated and controlled through frequency conversion and application - Google Patents
Sodium hypochlorite generating device regulated and controlled through frequency conversion and application Download PDFInfo
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- CN110820009A CN110820009A CN201911182594.1A CN201911182594A CN110820009A CN 110820009 A CN110820009 A CN 110820009A CN 201911182594 A CN201911182594 A CN 201911182594A CN 110820009 A CN110820009 A CN 110820009A
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- sodium hypochlorite
- power supply
- variable frequency
- anode
- frequency power
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- 239000005708 Sodium hypochlorite Substances 0.000 title claims abstract description 40
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 33
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 19
- 239000012267 brine Substances 0.000 claims abstract description 18
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 18
- 230000009182 swimming Effects 0.000 claims abstract description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 239000003651 drinking water Substances 0.000 claims description 4
- 235000020188 drinking water Nutrition 0.000 claims description 4
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 claims description 4
- 229910003446 platinum oxide Inorganic materials 0.000 claims description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910001925 ruthenium oxide Inorganic materials 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 230000001954 sterilising effect Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 6
- 239000000645 desinfectant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/24—Halogens or compounds thereof
- C25B1/26—Chlorine; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Automation & Control Theory (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to a variable-frequency regulated sodium hypochlorite generating device and application, wherein a unique variable-frequency power supply is adopted to act on a plurality of groups of anode sheets and cathode sheets, the variable-frequency power supply can be connected to a plurality of groups of anode sheets and cathode sheets according to actual requirements, the voltage and the frequency output by the variable-frequency power supply are adjusted through a main control module to adjust the electromagnetic strength and the frequency between the anode sheets and the cathode sheets so as to change the efficiency of electrolytic brine, the bottom of an electrolytic tank is also provided with a cold water tank, the heat generated by electrolysis is taken away through cold water in the cold water tank, the heat in the electrolytic tank is prevented from damaging instruments due to incapability of timely evacuation, the service life is prolonged, the energy is saved, the consumption is reduced, and the sodium hypochlorite generating device is green and environment-friendly, the concentration of the prepared sodium hypochlorite reaches 3-10g/h, is lower than the existing concentration, the water disinfection in public places such as food processing industry, hotels and hotels, secondary water supply and disinfection stations, industrial secondary disinfection, swimming pools and the like.
Description
Technical Field
The invention belongs to the technical field of sodium hypochlorite preparation, and particularly relates to a sodium hypochlorite generating device regulated and controlled in a frequency conversion mode and application thereof.
Background
The sodium hypochlorite generator is introduced into China at the end of the last century, and is widely applied to a plurality of industries or places needing disinfection due to the advantages of easy obtainment of raw materials, simple and convenient preparation, accurate addition and the like. The sodium hypochlorite generator generally uses a direct current power supply to electrolyze saline water or seawater to prepare sodium hypochlorite disinfectant.
With the continuous development and progress of power supply technology, the variable frequency power supply is continuously applied to various industries or household appliance industries, and the demand of people on the variable frequency electric appliances is increasingly increased under the call of actively advocating energy conservation and consumption reduction and building green homes. However, at present, most of sodium hypochlorite generators adopt a direct-current power supply to supply power, the concentration of sodium hypochlorite generated by electrolysis reaches 30-50g/h, the energy consumption is high, energy conservation and emission reduction cannot be realized, and a human body can be damaged by using high-concentration sodium hypochlorite for disinfection for a long time, so that how to improve the existing equipment to ensure that the sodium hypochlorite has a good disinfection effect, the concentration of the sodium hypochlorite is reduced, and the human body is not damaged becomes a hot point concerned by people.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a variable-frequency regulated sodium hypochlorite generating device and application thereof.
In order to achieve the purpose and achieve the technical effect, the invention adopts the technical scheme that:
a frequency-conversion regulated sodium hypochlorite generating device comprises a brine configuration box and electrolytic tanks which are mutually communicated, wherein the electrolytic tanks are provided with a plurality of anode plates and cathode plates which are arranged at equal intervals, the input end of the master control module is connected with the sensor module, the sensor module extends into a target disinfection tank, the frequency-conversion power module is connected with the output end of the master control module, the anode and the cathode of the frequency-conversion power module are respectively connected with the anode plates and the cathode plates, the voltage and the frequency output by the frequency-conversion power module are adjusted by the master control module to adjust the electromagnetic intensity and the frequency between the anode plates and the cathode plates, brine is continuously electrolyzed in the electrolytic tanks to obtain sodium hypochlorite and is sent to the target disinfection tank, realize disinfection and sterilization.
Furthermore, master control module and variable frequency power supply module integration are in the control box, and variable frequency power supply module includes variable frequency power supply, and variable frequency power supply's positive pole is connected with at least one positive pole piece in the electrolysis trough, and variable frequency power supply's negative pole is connected with at least one negative pole piece in the electrolysis trough, and a positive pole piece switches on variable frequency power supply positive pole, must have a negative pole piece to switch on variable frequency power supply negative pole, and an positive pole piece and a negative pole piece are a set of.
Furthermore, the electrode distance of each group of the anode strip and the cathode strip is 0.5-6mm, the anode strip is a titanium plate coated with ruthenium or platinum oxide, the cathode strip is a titanium plate, the thickness of the anode strip and the thickness of the cathode strip are respectively 1-5mm, the electrolysis time is 20-35min, and the electrolysis current is 15-20A.
Furthermore, a water outlet and an air outlet are formed in the electrolytic cell, an adaptive electromagnetic valve or a faucet is installed at the water outlet, the electromagnetic valve is connected with the main control module, and the opening and closing of the electromagnetic valve are controlled through the main control module.
Furthermore, a cold water tank is arranged at the bottom of the electrolytic tank and is in an open round bowl shape.
Furthermore, the main control module is a PLC controller, a single chip microcomputer or a microcomputer, and a storage module is arranged in the main control module.
The invention also provides application of the sodium hypochlorite generating device regulated and controlled by frequency conversion, which is applied to water disinfection in public places such as household drinking water disinfection, food processing industry, hotels and restaurants, secondary water supply increasing and eliminating stations, industrial secondary disinfection, swimming pools and the like.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a variable-frequency regulated sodium hypochlorite generating device and application, wherein a unique variable-frequency power supply is adopted to act on a plurality of groups of anode sheets and cathode sheets which are arranged at intervals, the variable-frequency power supply can be connected into a plurality of anode sheets and cathode sheets according to actual requirements, the electromagnetic strength and frequency between the anode sheets and the cathode sheets are adjusted by adjusting the voltage and frequency output by a variable-frequency power supply module through a main control module, so that the efficiency of electrolytic brine is changed, the bottom of an electrolytic tank is also provided with a cold water tank, heat generated by electrolysis is taken away through cold water in the cold water tank, instruments are prevented from being damaged due to incapability of timely evacuation by the heat in the electrolytic tank, the service life is prolonged, energy is saved, consumption is reduced, the cost is reduced, and the invention is green and environment-friendly, the concentration of the sodium hypochlorite prepared by the invention reaches 3-10g/h, high stability, and is more suitable for water disinfection in public places such as household drinking water disinfection, food processing industry, hotels and hotels, secondary water supply station, industrial secondary disinfection, swimming pool and the like.
Drawings
FIG. 1 is a bottom view of the present invention;
FIG. 2 is a schematic structural view of a cold water tank according to the present invention;
wherein, 1-a brine preparation tank; 2-an electrolytic cell; 3-an anode sheet; 4-cathode plate; 5-an electromagnetic valve; 6-an exhaust port; 7-a control box; 8-a cold water tank.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings so that the advantages and features of the invention can be more easily understood by those skilled in the art, and the scope of the invention will be clearly and clearly defined.
As shown in fig. 1-2, a variable frequency regulated sodium hypochlorite generating device comprises a plurality of brine preparation boxes 1 and electrolytic tanks 2 which are communicated with each other, wherein the electrolytic tanks 2 are arranged in parallel or continuously, dilute brine is prepared by the brine preparation boxes 1 and pumped into the electrolytic tanks 2 through metering pumps to be electrolyzed, the device also comprises a main control module, a variable frequency power supply module and a sensor module, the main control module and the variable frequency power supply module are integrated in a control box 7, the control box 7 is installed at a proper position, a plurality of groups of anode sheets 3 and cathode sheets 4 which are arranged at equal intervals are arranged in each electrolytic tank 2, one anode sheet 3 and one cathode sheet 4 are in one group, a plurality of groups of anode sheets 3 and cathode sheets 4 in the electrolytic tanks 2 can be transversely arranged in parallel or longitudinally arranged in a laminated manner, the selection can be carried out according to actual requirements, the input end of the main control module is connected with the sensor module, the sensor module extends into a target, the variable frequency power supply module is connected with the output end of the main control module, the positive and negative poles of the variable frequency power supply module are respectively connected with the anode sheets and the cathode sheets, the variable frequency power supply module comprises a variable frequency power supply, the positive pole of the variable frequency power supply is connected with at least one anode sheet 3 in the electrolytic bath 2, the negative pole of the variable frequency power supply is connected with at least one cathode sheet 4 in the electrolytic bath 2, the electromagnetic intensity and the frequency between each group of anode sheets 3 and each group of cathode sheets 4 are adjusted by the voltage and the frequency output by the variable frequency power supply module through the main control module, the saline water is continuously electrolyzed in the electrolytic bath 2 to obtain sodium hypochlorite and is sent to a target.
The electrode distance between each group of the anode strips 3 and the cathode strips 4 is 0.5-6mm, the anode strips 3 are made of titanium coated with ruthenium or platinum oxide, the cathode strips 4 are made of titanium, and the thicknesses of the anode strips 3 and the cathode strips 4 are respectively 1-5 mm.
The electrolytic tank 2 is provided with a water outlet (not shown, the position of the electromagnetic valve 5 is the position of the water outlet) and an air outlet 6, the electromagnetic valve 5 or a water tap matched with the water outlet is arranged at the water outlet, the electromagnetic valve 5 is connected with the main control module, and the opening and closing of the electromagnetic valve 5 are controlled by the main control module. In order to timely evacuate heat generated by electrolysis, the bottom of the electrolytic cell 2 is also provided with a cold water tank 8, the heat generated by electrolysis is taken away by cold water in the cold water tank 8, the cold water tank 8 is in an open round bowl shape, the size of the cold water tank is matched with that of the electrolytic cell 2, and the cold water is poured into the cold water tank 8 for water cooling.
The application of a sodium hypochlorite generator with variable frequency regulation and control is applied to water disinfection in public places such as household drinking water disinfection, food processing industry, hotels, secondary water supply stations, industrial secondary disinfection, swimming pools and the like.
The main control module is a PLC controller, a singlechip or a microcomputer and the like, a storage module is arranged in the main control module, the main control module can continuously call a preset bacteria value in the storage module and compare the preset bacteria value with an actual bacteria count, the control and comparison functions can be realized by adopting the prior art, the dilute saline solution can be prepared by self, and the specific preparation steps are as follows: firstly, salt is dissolved in water to prepare concentrated saline, then the concentrated saline is diluted to 2-3% dilute saline solution, and then the dilute saline solution is pumped into an electrolytic bath 2 for electrolysis.
The working principle of the invention is as follows:
the device is connected with an external power supply, the input end of a main control module is connected with a sensor module, the sensor module extends into a target disinfection tank, a variable frequency power supply module is connected with the output end of the main control module, after the device is powered on, a brine configuration box 1 prepares dilute brine and flows into an electrolytic tank 2 to wait for electrolysis, the sensor module transmits the number of bacteria in the target disinfection tank detected in real time to the main control module, the main control module receives and compares the number with a target bacteria value set in a storage module, if the number exceeds the set bacteria value, disinfection is required at the moment, the main control module drives a variable frequency power supply to work, variable frequency voltage and frequency are output to an anode sheet 3 and a cathode sheet 4, brine is continuously electrolyzed in the electrolytic tank 2 to obtain sodium hypochlorite in real time, the main control module controls an electromagnetic valve 5 to be opened, sodium hypochlorite disinfectant in the electrolytic tank 2 is pumped into, the sodium hypochlorite disinfectant in the electrolytic bath 2 can directly flow into the target disinfection tank.
Example 1
A variable-frequency regulated sodium hypochlorite generating device comprises three mutually communicated brine preparation boxes 1 and electrolytic tanks 2, wherein the three electrolytic tanks 2 are arranged in parallel, dilute brine solution with the concentration of 3% is prepared in the brine preparation box 1 and is quantitatively pumped into the electrolytic tanks 2 through metering pumps to be electrolyzed, the device also comprises a main control module, a variable-frequency power supply module and a sensor module, the main control module and the variable-frequency power supply module are integrated in a control box 7, the main control module selects a PLC (programmable logic controller), a plurality of groups of anode sheets 3 and cathode sheets 4 which are arranged at equal intervals are arranged in each electrolytic tank 2, one anode sheet 3 and one cathode sheet 4 are a group, a plurality of groups of anode sheets 3 and cathode sheets 4 in each electrolytic tank 2 are transversely arranged in parallel, the input end of the main control module is connected with the sensor module, the sensor module extends into a swimming pool, the variable-frequency power supply module is connected with the output end of the main control module, in the embodiment 1, four groups of anode sheets 3 and cathode, the other parts are the same as the existing electrolysis equipment, and the voltage and the frequency output by the variable frequency power supply module are adjusted through the main control module to adjust the electromagnetic intensity and the frequency between the anode sheet 3 and the cathode sheet 4.
The electrode distance of each group of the anode strips 3 and the cathode strips 4 is 3mm, the anode strips 3 are made of titanium coated with platinum oxide, the cathode strips 4 are made of titanium, the thicknesses of the anode strips 3 and the cathode strips 4 are respectively 3mm, the electrolysis time is 20-35min, and the electrolysis current is 15-20A.
Open on electrolysis trough 2 has outlet and gas vent 6, the solenoid valve 5 of outlet department installation adaptation, solenoid valve 5 is connected with host system, through opening and close of host system control solenoid valve 5, 2 bottoms of electrolysis trough are equipped with the cold water tank 8 that is the round bowl form, salt solution constantly electrolyzes in electrolysis trough 2 and obtains sodium hypochlorite, sodium hypochlorite's concentration reaches 3-10g/h, concentration is low, the disinfection is effectual, do not harm the human body, when host system control solenoid valve 5 opened, the sodium hypochlorite antiseptic solution passes through the pump sending and sends to the swimming pool in, realize disinfection, the disinfection finishes, solenoid valve 5 closes, so the circulation is reciprocal, utilize variable frequency power supply to regulate and control, energy saving reduces this.
The unexplained parts of the present invention include products and methods which are not explained in detail, and can be realized by adopting the prior art, and are not described in detail herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The sodium hypochlorite generating device is characterized by comprising a brine configuration box (1) and electrolytic tanks (2) which are communicated with each other, wherein the electrolytic tanks (2) are provided with a plurality of anode sheets (3) and cathode sheets (4) which are arranged in parallel or in series, the brine configuration box (1) is used for preparing dilute brine and pumping the dilute brine into the electrolytic tanks (2), the sodium hypochlorite generating device also comprises a main control module, a variable frequency power supply module and a sensor module, a plurality of groups of anode sheets (3) and cathode sheets (4) which are arranged at intervals are placed in each electrolytic tank (2), the input end of the main control module is connected with the sensor module, the sensor module extends into a target disinfection tank, the output end of the main control module is connected with the variable frequency power supply module, the variable frequency power supply module is connected with the anode sheets (3) and the cathode sheets (4), and the electromagnetic intensity and frequency between the anode sheets (3) and the cathode sheets (4), the saline water is continuously electrolyzed in the electrolytic bath (2) to obtain sodium hypochlorite and is sent to a target disinfection tank to realize disinfection and sterilization.
2. The sodium hypochlorite generating device with the variable frequency regulation and control function as claimed in claim 1, wherein the main control module and the variable frequency power supply module are integrated in the control box (7), the variable frequency power supply module comprises a variable frequency power supply, the anode of the variable frequency power supply is connected with at least one anode sheet (3) in the electrolytic bath (2), and the cathode of the variable frequency power supply is connected with at least one cathode sheet (4) in the electrolytic bath (2).
3. The sodium hypochlorite generating device with the variable frequency regulation and control according to claim 1, wherein the electrode distance between each group of the anode strips (3) and the cathode strips (4) is 0.5-6mm, the anode strips (3) are made of titanium coated with ruthenium or platinum oxide, the cathode strips (4) are made of titanium, the thicknesses of the anode strips (3) and the cathode strips (4) are respectively 1-5mm, the electrolysis time is 20-35min, and the electrolysis current is 15-20A.
4. The sodium hypochlorite generating device with the variable frequency regulation and control function as claimed in claim 1, wherein a water outlet and an air outlet (6) are formed in the electrolytic cell (2), an adaptive electromagnetic valve (5) or a water tap is installed at the water outlet, and the electromagnetic valve (5) is connected with a main control module.
5. The sodium hypochlorite generating device with the variable frequency regulation and control as claimed in claim 1, characterized in that a cold water tank (8) is arranged at the bottom of the electrolytic cell (2), and the cold water tank (8) is in the shape of an open circular bowl.
6. The frequency-conversion regulated sodium hypochlorite generating device according to claim 1, wherein the main control module is a PLC (programmable logic controller), a single chip microcomputer or a microcomputer, and a storage module is arranged in the main control module.
7. The application of the sodium hypochlorite generating device with the variable frequency regulation and control is characterized by being applied to water disinfection in public places such as household drinking water disinfection, food processing industry, hotels and hotels, secondary water supply increasing and eliminating stations, industrial secondary disinfection, swimming pools and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182594.1A CN110820009A (en) | 2019-11-27 | 2019-11-27 | Sodium hypochlorite generating device regulated and controlled through frequency conversion and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182594.1A CN110820009A (en) | 2019-11-27 | 2019-11-27 | Sodium hypochlorite generating device regulated and controlled through frequency conversion and application |
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| CN104342715A (en) * | 2013-08-09 | 2015-02-11 | 黄志明 | Diaphragm-free type device for circularly electrolyzing hypochlorous acid and sodium hypochlorite |
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| CN211112251U (en) * | 2019-11-27 | 2020-07-28 | 苏州希克曼物联技术有限公司 | Sodium hypochlorite generating device regulated and controlled through frequency conversion |
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2019
- 2019-11-27 CN CN201911182594.1A patent/CN110820009A/en active Pending
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|---|---|---|---|---|
| CN2780747Y (en) * | 2005-04-28 | 2006-05-17 | 王庆旺 | Variable frequency on-line micro electrolysis device |
| WO2008035868A1 (en) * | 2006-09-19 | 2008-03-27 | Soo-Kil Pyo | Apparatus for producing antiseptic solution including chlorine |
| CN104342715A (en) * | 2013-08-09 | 2015-02-11 | 黄志明 | Diaphragm-free type device for circularly electrolyzing hypochlorous acid and sodium hypochlorite |
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