JP2008221120A - Electrolytic operation method of plural electrolytic cell type electrolytic water generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To produce electrolytic water having properties different from those of electrolytic water generated in normal electrolytic operation at an amount equal to or almost equal to that of the electrolytic water generated in the normal electrolytic operation by using a plural electrolytic cell type electrolytic water generator and carrying out electrolytic operation in an electrolytic condition different from that of the normal electrolytic operation. <P>SOLUTION: Water to be electrolyzed is supplied to a first electrolytic cell 30a and a second electrolytic cell 30b in the same condition. Electrolysis is carried out in a state where voltage is applied to either one of the first electrolytic cell 30a and the second electrolytic cell 30b and voltage application is stopped to the other electrolytic cell, and electrolytic water flowing out from the one electrolytic cell and water to be electrolyzed flowing out from the other electrolytic cell are joined. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electrolysis operation method for an electrolyzed water generating apparatus of a multiple electrolyzer system that includes a first electrolyzer and a second electrolyzer in parallel.

As one type of electrolyzed water generating device, there is a multi-electrolyzer type electrolyzed water generating device that includes a first electrolytic cell and a second electrolytic cell in parallel. The electrolyzed water generating apparatus of this type is such that both the electrolyzers are electrolyzed synchronously under the same electrolysis conditions, and the amount of electrolyzed water produced is more than doubled compared with electrolysis of one electrolyzer. (See Patent Document 1).
Japanese Patent Laid-Open No. 8-267070

  By the way, in the electrolysis operation of the electrolyzed water generating apparatus, it may be required to generate electrolyzed water having different characteristics in the pH of the generated electrolyzed water and the content of the active ingredient. In order to meet such demands, generally, the electrolysis water having the required characteristics is set so that the electrolysis conditions currently set, for example, the electrolysis current value, the supply flow rate of electrolyzed water, the production flow rate of electrolysis water, etc. Means are taken to change it to be generated. However, it is not easy and time-consuming to set the above electrolysis conditions so that electrolyzed water having the required characteristics is generated.

  The present invention was made by paying attention to an electrolyzed water generating device of a multiple electrolyzer system, and its purpose is to generate electrolyzed water of a multiple electrolyzer system without changing electrolysis conditions in a normal electrolysis operation. The object is to generate electrolytically generated water having different characteristics without significantly changing the amount of electrolytically generated water intended by the apparatus.

  The present invention is an electrolysis operation method of an electrolyzed water generating apparatus of a multiple electrolyzer system that includes a first electrolyzer and a second electrolyzer in parallel, and the electrolysis operation method includes the first electrolyzer and the electrolysis water While supplying electrolyzed water to a 2nd electrolytic cell on the same conditions, a voltage is applied to either one of the said 1st electrolytic cell and the said 2nd electrolytic cell, and the other electrolytic cell The electrolysis is performed in a state where the application of voltage is stopped, and the electrolyzed water flowing out from the one electrolytic cell and the electrolyzed water flowing out from the other electrolytic cell are combined.

  In the electrolytic operation method according to the present invention, when each electrolytic cell is a diaphragm electrolytic cell, or when each electrolytic cell is a diaphragm electrolytic cell, positive and negative characteristics are periodically applied to the voltage applied to each electrolytic cell. When electrolysis is performed by switching, the electrolysis water that flows out from the one electrolytic bath and the electrolyzed water that flows out from the other electrolytic bath are combined with the electrolysis acidic water dedicated to each electrolytic bath. It can be carried out between those that flow out from the outflow conduits and those that flow out from the dedicated outflow conduits for the electrolyzed alkaline water of each of the electrolytic cells.

  In this case, it is necessary to connect the outflow pipelines dedicated to the electrolytically generated acidic water in each electrolytic cell to the outflow conduit dedicated to the electrolytically generated acidic water, and the outflow dedicated to the electrolytically generated alkaline water in each electrolytic cell. It is necessary to further connect the pipes to an outflow pipe dedicated for electrolytically generated alkaline water, and it is preferable to make these connections using a substantially Y-shaped bifurcated pipe.

  In the electrolytic operation method according to the present invention, the electrolyzed water generating device of the multiple electrolyzer system that performs electrolysis operation of both electrolytic cells under the same electrolysis conditions is usually performed in response to a request for the generation of electrolyzed water having different characteristics. This is an electrolytic operation method to be performed. In the electrolytic operation method according to the present invention, both electrolytic cells are electrolytically operated under different electrolytic conditions. In particular, for either one of the electrolytic cells, the normal electrolytic condition is adopted, and either one of the electrolytic cells is operated. As for, the electrolytic operation is performed in a state where the application of the voltage to the electrolytic cell is stopped.

  Therefore, if the electrolysis operation according to the present invention is adopted, by the simple operation of stopping the application of voltage to the other electrolytic cell, the same amount as the amount of electrolyzed water produced in the normal electrolysis operation, In addition, the concentration of the active ingredient contained in the electrolyzed water generated in the normal electrolysis operation is about half, and electrolyzed water having characteristics different from those of the electrolyzed water generated in the normal electrolysis operation can be generated. In this case, if the combined flow rate of the electrolyzed water flowing out from the other electrolytic cell with respect to the electrolytically generated water flowing out from the one electrolytic cell is appropriately adjusted, the amount of electrolytic water generated can be generated in a normal electrolysis operation. Electrolytically produced water with appropriate characteristics can be produced without significantly reducing the amount of electrolytically produced water produced.

  The electrolysis operation according to the present invention particularly includes an electrolyzed water generating device in which each electrolyzer is a diaphragm electrolyzer, each electrolyzer is a diaphragm electrolyzer, and periodically applies an applied voltage to each electrolyzer in the electrolyzer. It can implement effectively by taking the electrolysis operation condition which concerns on this invention with respect to the electrolyzed water generating apparatus electrolyzed by switching positive / negative.

  The present invention is an electrolysis operation method of an electrolyzed water generating apparatus of a multiple electrolyzer system that includes a first electrolyzer and a second electrolyzer in parallel. FIG. 1 and FIG. 2 show an electrolyzed water generating apparatus of a two-tank electrolytic cell system for carrying out the electrolytic operation method according to the present invention. Moreover, in FIG. 3, the two diaphragm membrane electrolyzers which the said electrolyzed water production | generation apparatus has, the supply line of the to-be-electrolyzed water connected to each diaphragm membrane electrolyzer, and the electrolyzed water connected to each diaphragm membrane electrolyzer The outflow pipeline of product water is shown schematically.

  The electrolyzed water generator includes a salt water preparation tank 10, a front cover 20 that covers the front side of the salt water preparation tank 10, two diaphragm membrane electrolyzers 30a and 30b, and a control device that controls the electrolysis operation of the electrolyzed water generator. 40 and a water softener (not shown) for softening the raw water, these components are integrated and housed in an outer box body 51 constituting the outer box 50, and the front of the outer box body 51 The opening can be opened and closed by an opening / closing door 52 attached to the side edge.

  The outer box 50 includes an outer box main body 51 and an opening / closing door 52 that opens and closes a front opening of the outer box main body 51. The opening / closing door 52 is opened when an electrolytic operation is started. Enable operation. In the arrangement of each component of the electrolyzed water generating device in the outer box main body 51, the salt water preparation tank 10 is outside in consideration of the handling of each component, the handling of the water pipeline connected to each component, and the like. The water softener (not shown) is located on the left front opening side in the box body 51, and is disposed on the rear side of the salt water preparation tank 10 in the outer box body 51, and a pair of electrolytic cells 30a, 30b is located in the lower stage of the right side in the outer case main body 51, and the control apparatus 40 has the arrangement state located in the upper stage of each electrolytic cell 30a, 30b.

  The salt water preparation tank 10 prepares high-concentration salt water and stores the prepared high-concentration salt water. The stored high-concentration salt water is soft water for regenerating the ion exchange resin accommodated in the water softener. In addition, during electrolysis operation, in order to prepare the electrolyzed water to be supplied to each of the electrolyzers 30a and 30b, the electrolyzed water is supplied to the site for preparing the electrolyzed water in the water pipeline. Alkali metal salts such as sodium chloride and potassium chloride can be used as the salt for preparing the high-concentration salt water. However, in this embodiment, dilute saline is used as the electrolyzed water. The salt which is a typical example of is adopted. Therefore, the said salt water preparation tank 10 prepares a high concentration salt solution, and stores this.

  In preparation of the high-concentration saline solution in the salt water preparation tank 10, the cap 11 covering the salt inlet of the tank body is removed, a required amount of salt is introduced into the tank body through the salt inlet, and the tank is supplied from the water softener. Prepare by dissolving in the softened raw water introduced into the body. In this case, an excessive amount of salt is accumulated in the tank body, and is gradually dissolved in the softened raw water supplied in the tank body so that saturated saline is generated. In the present embodiment, the saturated saline solution corresponds to a high-concentration saline solution.

  The water softener softens raw water for preparing high-concentration saline and raw water for preparing electrolyzed water, and an ion exchange resin is accommodated in the main body. The raw water subjected to the softening treatment is supplied into the tank body of the salt water preparation tank 10 and is also supplied to a site for preparing the electrolyzed water in the water system pipeline. In the water softener, the regeneration treatment of the ion exchange resin accommodated in the vessel main body is periodically performed. For the regeneration treatment of the ion exchange resin, a high-concentration saline solution prepared in the salt water preparation tank 10 is used. During the regeneration treatment, the high-concentration saline solution is supplied from the salt water preparation tank 10 to the water softener. .

  Each electrolytic cell 30a, 30b is a diaphragm electrolytic cell having the same configuration. As schematically shown in FIG. 3, the inside of the tank body 31 is partitioned by a diaphragm 32, and a pair of electrolytic cells is formed in the tank body 31. Chambers R1 and R2 are formed. Reference numerals 33a and 33b indicate electrodes disposed in the electrolysis chambers R1 and R2. Each of these electrolytic cells 30a and 30b is a known one, and a branch line portion of a supply line 34 for supplying water to be electrolyzed is connected to the upstream side of each electrolytic chamber R1 and R2 of the electrolytic cells 30a and 30b. ing.

  On the other hand, the first outflow pipes 35a1 and 36a1 constituting the outflow pipes are respectively connected to the downstream sides of the electrolytic chambers R1 of the electrolytic tanks 30a and 30b, and the electrolytic chambers R2 of the electrolytic tanks 30a and 30b are connected. The first outflow pipes 35b1 and 36bb1 constituting the outflow pipes are respectively connected to the downstream side. The first outflow pipes 35a1, 35b1 of the one electrolytic cell 30a are connected to the second outflow pipes 35a2, 35b2 via the electromagnetic switching valve 37a, and the first outflow pipe 35a, 35b1 is connected to the first outflow pipe 30a. The outflow pipes 36a1 and 36b1 are connected to the second outflow pipes 36a2 and 36b2 through the electromagnetic switching valve 37b.

  The second outflow pipe 35a2 of the one electrolytic bath 30a and the second outflow pipe 36a2 of the other electrolytic bath 30b are connected to the third outflow pipe 38 via a Y-shaped bifurcated connecting pipe 38a. The second outflow pipe 35b2 of the one electrolytic bath 30a and the second outflow pipe 36b2 of the other electrolytic bath 30b are mutually connected via the Y-shaped bifurcated connecting pipe 39a. Are connected to the outflow conduit 39. The reason why the Y-shaped bifurcated connection pipes 38a and 39a are used for the connection of the respective outflow pipes is that the electrolytically generated water flowing out from one electrolytic tank 30a described later and the electrolytically generated water flowing out from the other electrolytic tank 30b are used. When joining the two electrolyzed water, the two electrolyzed waters are joined at an equal pressure, which can eliminate the pressure exerted on the electrolytic cell on one side due to the pressure difference when the two electrolyzed waters merge, The flow balance in the electrolytic cell can be prevented from being lost.

  The electrolyzed water generating device is controlled by the control device 40 for electrolysis operation. In a normal electrolysis operation in the electrolyzed water generating apparatus, both electrolyzers 30a and 30b are subjected to the same electrolysis conditions, the same voltage is applied to the electrodes 33a and 33b, and the electrolysis operation is performed for a predetermined time. Performs the electrolysis operation by switching the voltage applied to each electrode 33a, 33b to the positive and negative characteristics, switching the anode side electrolysis chamber to the cathode side electrolysis chamber, and switching the cathode side electrolysis chamber to the anode side electrolysis chamber. In the electrolysis operation, the anode-side electrolysis chamber where the scale is deposited during the electrolysis operation is switched to the cathode-side electrolysis chamber, and the scale deposited in the electrolysis chamber is dissolved and removed. Is intended. Thereby, in each electrolytic cell 30a, 30b, the fall of the electrolysis efficiency resulting from the scale to precipitate can be prevented. For this reason, in the electrolysis operation, when the voltage applied to the electrodes 33a and 33b is switched between the positive and negative characteristics, the electromagnetic switching valves 37a and 37b are switched in synchronism with this.

  In the electrolysis operation, the electrolysis chamber R1 of each electrolyzer 30a, 30b is an anode electrolysis chamber, the electrolysis chamber R2 is a cathode electrolysis chamber, and the first outflow pipes 35a1, 35b1 on the one electrolyzer 30a side. Is connected to the second outflow pipes 35a2 and 35b2, and the first outflow pipes 36a1 and 36b1 on the other electrolytic cell 30b side are connected to the second outflow pipes 36a2 and 36b2. The electrolytically generated acidic water generated in the electrolysis chamber R1 of the one electrolytic bath 30a flows into the third outflow line 38 through the first outflow line 35a1 and the second outflow line 35a2. The electrolytically generated acidic water generated in the electrolysis chamber R1 of the other electrolyzer 30b flows into the third outflow line 38 through the first outflow line 36a1 and the second outflow line 36a2. become.

  Further, the electrolytically generated alkaline water generated in the electrolysis chamber R2 of the one electrolytic bath 30a flows into the third outflow line 39 through the first outflow line 35b1 and the second outflow line 35b2. The electrolytically generated alkaline water generated in the electrolysis chamber R2 of the other electrolytic bath 30b flows into the third outflow line 39 through the first outflow line 36b1 and the second outflow line 36b2. become.

  On the other hand, when the applied voltages to the electrodes 33a and 33b are switched to the positive and negative characteristics and the switching valves 37a and 37b are switched at the same time, the first outflow pipes 35a1 and 35b1 of the one electrolytic cell 30a are electromagnetic switching valves. 37a is connected to the second outflow pipes 35b2 and 35a2, and the first outflow pipes 36a1 and 36b1 on the other electrolytic cell 30b side are connected to the second outflow pipe via the electromagnetic switching valve 37b. The pipes 36b2 and 36a2 are switched and connected.

  As a result, the electrolytically generated alkaline water generated in the electrolysis chamber R1 of the one electrolytic cell 30a flows into the third outflow line 39 through the first outflow line 35a1 and the second outflow line 35b2. The electrolytically generated alkaline water generated in the electrolysis chamber R1 of the other electrolytic bath 30b flows into the third outflow line 39 through the first outflow line 36a1 and the second outflow line 36b2. It will be. The electrolytically generated acidic water generated in the electrolysis chamber R2 of the one electrolytic bath 30a flows into the third outflow line 38 through the first outflow line 35b1 and the second outflow line 35a2. The electrolytically generated acidic water generated in the electrolysis chamber R2 of the other electrolyzer 30b flows into the third outflow line 38 through the first outflow line 36b1 and the second outflow line 36a2. become. Therefore, in the electrolysis operation, one outflow line 38 of the third outflow lines 38 and 39 is a dedicated outflow line for the electrolytically generated acidic water, and the other outflow line 39 is the electrolytically generated alkaline water. This will be a dedicated outflow line.

  Thus, while the electrolyzed water generating apparatus normally performs electrolysis operation under the same electrolysis conditions in both electrolysis tanks 30a and 30b, in the electrolysis operation according to the present invention, either one of the electrolysis tanks. Then, the normal electrolysis conditions are adopted, and the electrolysis operation is carried out under the condition that the application of voltage to the electrolysis tank is stopped in either one of the electrolysis tanks. However, both the supply flow rate of the electrolyzed water to the electrolyzers 30a and 30b and the outflow flow rate from the electrolyzers 30a and 30b are the same.

  In the electrolysis operation according to the present invention, for example, the electrolysis operation is performed in a state where normal electrolysis conditions are adopted in one electrolyzer 30a and the voltage application to the electrodes 33a and 33b is stopped in the other electrolyzer 30b. According to the electrolysis operation under such electrolysis conditions, electrolysis-generated acidic water is generated in the electrolysis chamber R1 of the one electrolytic bath 30a, and electrolysis-generated alkaline water is generated in the electrolysis chamber R2. The electrolytically generated acidic water generated in the electrolytic chamber R1 of the one electrolytic cell 30a flows into the third outflow line 38 through, for example, the first outflow line 35a1 and the second outflow line 35a2, The electrolytically generated alkaline water generated in the electrolysis chamber R2 flows into the third outflow line 39 through the first outflow line 35b1 and the second outflow line 35b2, for example.

  On the other hand, the electrolyzed water is not electrolyzed in the electrolysis chambers R1 and R2 of the other electrolyzer 30b, and the electrolyzed water supplied to the electrolyzer chamber R1 of the other electrolyzer 30b is the first outlet pipe. It flows into the 3rd outflow line 38 through the path | route 36a1 and the 2nd flow volume line 36a2, and joins the electrolysis production | generation acidic water which flows in from one electrolytic vessel 30a. The electrolyzed water supplied to the electrolysis chamber R2 of the other electrolyzer 30b flows into the third outflow line 39 through the first outflow line 36b1 and the second flow rate line 36b2. The electrolytically generated alkaline water flowing in from the electrolytic bath 30a joins. For this reason, in the electrolysis operation, the active component of the electrolyzed acidic water generated is approximately half the concentration of the active component of the electrolyzed acid water generated in the normal electrolysis operation, and the generated electrolyzed alkaline water The active ingredient of water is about half the concentration of the active ingredient of electrolytically generated alkaline water produced by normal electrolysis operation. However, the amount of each electrolyzed water produced is the same as the amount of each electrolyzed water produced in a normal electrolysis operation.

  In the electrolysis operation, if the combined flow rate of the electrolyzed water flowing out from the other electrolytic tank 30b with respect to the electrolytic generated water flowing out from the one electrolytic tank 30a is appropriately adjusted, Electrolytically produced water having appropriate characteristics can be produced without greatly reducing the amount of electrolytically produced water produced in the electrolysis operation.

It is a front view of the state which opened the opening / closing door of the outer case which accommodates the electrolyzed water generating apparatus which implements the electrolysis operation method concerning the present invention. It is a front view of the state which removed a part of opening / closing door and front panel of the outer case which accommodates the same electrolyzed water generating apparatus. It is a schematic diagram which shows collectively a pair of electrolytic cell with which the electrolyzed water generating apparatus is equipped, a supply pipe for water to be electrolyzed connected to the electrolyzer, and an outflow pipe connected to the electrolyzer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Salt water storage tank, 11 ... Cap, 20 ... Cover member, 30a, 30b ... Electrolysis tank, 31 ... Tank main body, 32 ... Separator, R1, R2 ... Electrolysis chamber, 33a, 33b ... Electrode, 34 ... Supply line, 35a1, 35b1 ... first outflow line, 36a1,36b1 ... first outflow line, 35a2,35b2 ... second outflow line, 36a2,36b2 ... second outflow line, 37a, 37b ... electromagnetic switching Valves 38, 39 ... third outlet pipes, 38a, 39a ... bifurcated connecting pipes, 40 ... control device, 50 ... outer box, 51 ... outer box body, 52 ... open / close door.

Claims (2)

An electrolysis operation method of an electrolyzed water generating device of a multiple electrolyzer system comprising a first electrolyzer and a second electrolyzer in parallel, the electrolysis operation method comprising the first electrolyzer and the second electrolysis While supplying electrolyzed water to the tank under the same conditions, a voltage is applied to one of the first electrolytic tank and the second electrolytic tank, and a voltage is applied to the other electrolytic tank. Electrolytic water generation in a multi-electrolyzer system characterized in that electrolysis is performed in a state where application is stopped, and electrolyzed water generated water flowing out from the one electrolytic cell and electrolyzed water flowing out from the other electrolytic cell are merged Electrolytic operation method of the apparatus. 2. The electrolytic operation method according to claim 1, wherein each of the electrolytic cells is a diaphragm electrolytic cell, and the electrolyzed water generated water flowing out from the one electrolytic cell and the electrolytic cell flowing out from the other electrolytic cell. Outflows from the dedicated outflow conduits of the electrolyzed acidic water possessed by each of the electrolytic baths and from the dedicated outflow conduits of the electrolyzed alkaline water possessed by the respective electrolytic baths are combined with the electrolyzed water. An electrolysis operation method for an electrolyzed water generating device of a multiple electrolyzer system, characterized in that it is carried out between things.

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