JP4083061B2

JP4083061B2 - Voltage application method and voltage application device for electrodes of electrolyzed water generating device

Info

Publication number: JP4083061B2
Application number: JP2003098955A
Authority: JP
Inventors: 浩司土川; 正人宮地; 昌浩藤田
Original assignee: Hoshizaki Electric Co Ltd
Current assignee: Hoshizaki Electric Co Ltd
Priority date: 2003-04-02
Filing date: 2003-04-02
Publication date: 2008-04-30
Anticipated expiration: 2023-04-02
Also published as: JP2004305801A

Description

【０００１】
【発明の属する技術分野】
本発明は、電解水生成装置の電極に対する電圧印加方法および電圧印加装置に関する。
【０００２】
【従来の技術】
電解水生成装置の一形式として、有隔膜電解槽の各電解室に配設されている各電極に、また、無隔膜電解槽の電解室に配設されている各電極に、可動接点を有する電磁接触器を介して電圧を印加するようにした電解水生成装置がある。当該形式の電解水生成装置においては、有隔膜電解槽または無隔膜電解槽（総称して電解槽ということがある）による電解運転に際しては、有隔膜電解槽の各電解室または無隔膜電解槽の電解室に配設されている各電極に電磁接触器を閉動作させて電圧を印加して、各電極間に所定の電解電流を流す手段が採られ、これによって、電解槽での電解が開始される。
【０００３】
当該有隔膜電解槽での電解では、陽極側電解室では電解生成酸性水が生成されるとともに、陰極側電解室では電解生成アルカリ性水が生成される。この場合、当該有隔膜電解槽での電解をこのままの状態で継続させると、陰極側電解室ではスケールが発生して電解運転の効率を低下させるおそれがある。このため、当該有隔膜電解では、電解運転の途中に両電極の極性を切替えることによって、電解室の陽極側と陰極側を所定時間毎に交互に切替えて、電解室でのスケールの発生を極力抑制する手段が採られている（例えば特許文献１を参照）。
【０００４】
また、当該無隔膜電解槽での電解では、電解室に配設した両電極の陽極側近傍では電解生成酸性水が生成されるとともに、陰極側近傍では電解生成アルカリ性水が生成される。この場合、当該無隔膜電解槽での電解をこのままの状態で継続させると、陰極側電極およびその近傍ではスケールが発生して電解運転の効率を低下させるおそれがある。このため、当該無隔膜電解でも、電解運転の途中に両電極の極性を切替えることによって、電解室の両電極を陽極側と陰極側に所定時間毎に交互に切替えて、電解室の陽極側電極およびその近傍でのスケールの発生を極力抑制する手段が採られている。
【０００５】
しかして、当該電解水生成装置においては、電磁接触器として、一般には、接点部分を銀合金等の抵抗が極めて低い金属にて形成されている電磁接触器を採用して、開閉動作および／または切替動作を確実に行えるようにしている。また、当該電解水生成装置では、有隔膜電解または無隔膜電解を低い電解電圧（５Ｖ〜１０Ｖ）で行うことができるように、被電解水としては、無機塩等の電解補助剤の希薄水溶液を採用している。
【０００６】
【特許文献１】
特開平１１−１９１００８号公報
【０００７】
【発明が解決しようとする課題】
ところで、当該電解水生成装置で採用されている電磁接触器においては、その接点部分は酸化され易くて、その表面には早期に酸化被膜が形成される。このため、当該電磁接触器では、開閉動作および／または切替動作時、接点不良に起因する動作不良を発生するおそれがある。当該電解水生成装置において、電解運転を長期間運転を停止している場合には、動作不良の発生が増加する傾向にある。従って、本発明の目的は、かかる問題に対処することにある。
【０００８】
【課題を解決するための手段】
本発明に係る第１の発明は、電解水生成装置の電極に対する電圧印加方法に関するものである。本発明に係る電圧印加方法の第１は、電解水生成装置を構成する有隔膜電解槽の各電解室に配設されている各電極に、可動接点を有する電磁接触器を介して電圧を印加するための電圧印加方法であって、前記電磁接触器に電圧を印加した状態で同電磁接触器を動作させることを特徴とするものである。
【０００９】
また、本発明に係る電圧印加方法の第２は、電解水生成装置を構成する無隔膜電解槽の電解室に配設されている各電極に、可動接点を有する電磁接触器を介して電圧を印加するための電圧印加方法であって、前記電磁接触器に電圧を印加した状態で同電磁接触器を動作させることを特徴とするものである。
【００１０】
これらの各電圧印加方法においては、電圧印加状態下での前記電磁接触器の動作を、前記各電解槽での電解運転の開始前に行うようにすること、前記各電解槽での電解運転の中断中に行うようにすること、前記各電解槽での電解運転中の前記両電極の極性切替え時に行うようにすることができる。
【００１１】
また、本発明に係る第２の発明は、電解水生成装置の電極に対する電圧印加装置に関するものである。本発明に係る電圧印加装置の第１は、電解水生成装置を構成する有隔膜電解槽の各電解室に配設されている各電極に電磁接触器を介して電圧を印加するための電圧印加装置であり、本発明に係る電圧印加装置の第２は、電解水生成装置を構成する無電解槽の電解室に配設されている各電極に電磁接触器を介して電圧を印加するための電圧印加装置である。
【００１２】
これらの各電圧印加装置においては、前記電磁接触器を開閉動作または切替動作させる駆動手段と、前記電磁接触器に電圧印加可能な電圧可変式の直流電源と、前記電極間を流れる電流を検出する電流検知手段と、同電流検知手段からの信号に基づき前記直流電源から前記電磁接触器への電圧の印加を制御する制御手段を備え、同制御手段は、前記両電極間の電流が所定未満の場合に前記電磁接触器に所定の電圧を印加すべく機能することを特徴とするものである。
【００１３】
これらの各電圧印加装置においては、前記制御手段を、前記電磁接触器に対する電圧印加と同電磁接触器の動作を同期的に行う機能を備える構成とすることができる。
【００１４】
【発明の作用・効果】
本発明に係る各電圧印加方法においては、電磁接触器を電圧印加した状態で動作させるものであり、このような電圧印加状態下での電磁接触器の動作を、有隔膜電解槽または無隔膜電解槽での電解運転の開始前、電解運転の中断中、電解運転中の両電極の極性切替え時に行うものである。また、本発明に係る各電圧印加装置では、当該電圧印加方法を好適に実施することができるものである。
【００１５】
このような電圧印加状態下での電磁接触器の動作によれば、電磁接触器における接点部分の表面の酸化被膜は、電気的、または、電気的および機械的な衝撃によって破壊される。このため、電磁接触器の接点部分の表面が仮に酸化被膜にて被覆されている状態にある場合でも、電磁接触器の閉鎖動作および／または切替動作時には、接点部分の表面の酸化被膜に起因する動作不良が発生することはない。
【００１６】
従って、本発明に係る各電圧印加方法を実施すれば、当該有隔膜電解または無隔膜電解の運転を、電磁接触器の閉鎖動作時に動作不良を発生させることなく、円滑に開始しかつ円滑に再開させることができる。また、当該有隔膜電解または無隔膜電解において、電解運転の途中に両電解室を陽極側および陰極側に交互に切替えたい場合には、電磁接触器の切替動作に動作不良を発生させることなく、両電解室を陽極側および陰極側の交互の切替えを円滑に行うことができる。
【００１７】
【発明の実施の形態】
本発明は、電解水生成装置の電極に対する電圧印加方法および電圧印加装置に関する。図１には、本発明の一実施形態に係る電圧印加装置を備えた電解水生成装置を概略的に示しいる。当該電解水生成装置は、有隔膜電解槽１０と、本発明の一実施形態に係る電圧印加装置２０（本発明の第１の電圧印加装置）を備えており、電圧印加装置２０を除き公知の構成のものである。
【００１８】
当該電解水生成装置における有隔膜電解槽１０は、槽本体１１内を隔膜１２にて２つの区画室に分割されていて、各区画室には電極１３ａ，１３ｂがそれぞれ配設されて、各区画室が電解室Ｒ1，Ｒ2に構成されている。各電解室Ｒ1，Ｒ2には、供給管路１４の分岐管路を通して、例えば希薄食塩水である被電解水が供給される。
【００１９】
供給された被電解水は、各電解室Ｒ1，Ｒ2で電解されて、生成された電解生成水（電解生成酸性水および電解生成アルカリ性水）は、各流出管路１５ａ，１５ｂ、図示しない切替弁および専用の抽出管路を通して、所定の場所に抽出される。当該電解水生成装置においては、電解運転の開始および電解運転中は、電圧印加装置２０を介して各電極１３ａ，１３ｂに所定の電圧を印加して、各電極１３ａ，１３ｂに電解電流を生じさせることによって、電解室Ｒ1，Ｒ2内を電解運転状態に維持する。
【００２０】
電圧印加装置２０は、電圧可変式の直流電源２１、電磁接触器２２、電磁接触器２２の駆動回路２３、電流センサ２４、および制御装置２５を備えている。電磁接触器２２は、直流電源２１と各電極１３ａ，１３ｂを接続する電気回路に介装されていて、スイッチ装置として機能する。また、電磁接触器２２は、駆動回路２３によって開閉動作および切替動作を制御され、かつ、駆動回路２３の動作は制御装置２５に基づいて制御される。直流電源２１は、電圧可変式の電源であって、各電極１３ａ，１３ｂに印加すべき電圧値は制御装置２５によって制御される。
【００２１】
電流センサ２４は、両電極１３ａ，１３ｂ間を流れる電流を検出する電流検知手段である。電流センサ２４は、両電極１３ａ，１３ｂ間を流れる電流値を信号として制御装置２５に出力する。制御装置２５は、電流センサ２４から出力される検出信号に基づいて動作して、各電極１３ａ，１３ｂへの電圧印加の制御プログラムに基づいて、直流電源２１から出力される電圧値を制御し、駆動回路２３の動作を制御し、かつ、駆動回路２３の動作制御によって電磁接触器２２の開閉動作および切替動作を制御する。
【００２２】
当該電圧印加装置２０を備える当該電解水生成装置においては、電解運転の始動スイッチの投入により電解運転が開始される。当該電圧印加装置２０にあっては、始動スイッチの投入により制御装置２５が動作を開始し、直流電源２１から電磁接触器２２の接点部分に電解電圧（例えば設定電圧１０Ｖ）を印加し、この電圧印加状態で駆動回路２３を動作して電磁接触器２２を閉鎖動作し、直流電源２１から設定されている電解電圧を両電極１３ａ，１３ｂに印加するとともに、設定値の電圧印加を維持する。
【００２３】
電解運転の開始時、当該制御装置２５の制御動作によっても、両電極１３ａ，１３ｂに設定値の電圧が印加されていなくて、両電極１３ａ，１３ｂ間に設定値の電解電流が発生していない場合には、制御装置２５は、電流センサ２４から出力される検出信号に基づき、直流電源２１からの印加電圧を所定値高く制御して電磁接触器２２に印加する。
【００２４】
これにより、電磁接触器２２の接点部分は高い印加電圧による電気的衝撃を受けて、当該接点部分の表面の酸化被膜が破壊され、電磁接触器２２の接点部分は互いに導通し、両電極１３ａ，１３ｂに設定値より高い電圧が印加される。
【００２５】
制御装置２５は、その後、電流センサ２４から出力される検出信号に基づき、直流電源２１からの印加電圧を設定値に制御して、設定値の電圧を、電磁接触器２２を通して両電極１３ａ，１３ｂに印加して、この電圧印加状態を維持する。これにより、電解運転時には、設定値の電解電流が維持される。
【００２６】
当該電解水生成装置においては、電磁接触器２２の接点を切替動作により、両電極１３ａ，１３ｂの印加電圧の極性を正負交互に切替えることができる。これにより、両電解室Ｒ1，Ｒ2を陽極側および陰極側に交互に切替えて、陰極側電解室でのスケールの発生を防止する手段を採ることができる。
【００２７】
当該電解水生成装置において、電解運転中の両電解室Ｒ1，Ｒ2を陽極側および陰極側に交互に切替えるには、制御装置２５が電解時間に基づいて駆動回路２３を動作して、可動接点部分の接続関係を反転させる。可動接点部分の接続関係を反転させれば、両電極１３ａ，１３ｂに対する印加電圧の極性が反転し、両電解室Ｒ1，Ｒ2が陽極側および陰極側に交互に反転する。
【００２８】
当該電解水生成装置においては、電磁接触器２２の可動接点部分の切替え時には、制御装置２５は、直流電源２１からの両電極１３ａ，１３ｂの電圧印加を遮断する制御を行うことなく駆動回路２３を動作させて、電磁接触器２２の可動接点部分の切替えを行う。
【００２９】
これにより、電磁接触器２２の接点部分は、電気的および機械的に衝撃を受けて、仮に当該接点部分の表面に酸化被膜が形成されている場合でも同酸化被膜が破壊され、電磁接触器２２の接点部分は互いに導通し、両電極１３ａ，１３ｂに設定された極性の電圧が印加されることになる。
【００３０】
なお、本実施形態である電圧印加装置２０は、本発明の第１の電圧印加装置である、有隔膜電解槽の各電極に電圧を印加する電圧印加装置であるが、本発明においては、有隔膜電解槽を無隔膜電解槽に変更して、電解室の各電極に電圧を印加する電圧印加装置、すなわち、本発明の第２の電圧印加装置に変更して実施することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態に係る電圧印加装置を装備した電解水生成装置の一部を省略した概略構成図である。
【符号の説明】
１０…有隔膜電解槽、１１…槽本体、１２…隔膜、１３ａ，１３ｂ…電極、１４…供給管路、１５ａ，１５ｂ…流出管路、２０…電圧印加装置、２１…直流電源、２２…電磁接触器、２３…駆動回路、２４…電流センサ、２５…制御装置。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a voltage application method and a voltage application device for electrodes of an electrolyzed water generating device.
[0002]
[Prior art]
As one type of electrolyzed water generating device, each electrode disposed in each electrolysis chamber of the diaphragm electrolyzer has a movable contact in each electrode disposed in the electrolysis chamber of the non-diaphragm electrolyzer. There is an electrolyzed water generating apparatus in which a voltage is applied via an electromagnetic contactor. In the electrolyzed water generating apparatus of this type, during electrolysis operation using a diaphragm membrane electrolytic cell or a diaphragm membrane electrolytic cell (sometimes collectively referred to as an electrolytic cell), each electrolytic chamber or diaphragm membrane electrolytic cell of the diaphragm membrane electrolytic cell is used. A means for applying a voltage by applying a voltage by closing the electromagnetic contactor to each electrode disposed in the electrolysis chamber and causing a predetermined electrolysis current to flow between the electrodes is adopted, thereby starting electrolysis in the electrolytic cell. Is done.
[0003]
In electrolysis in the diaphragm electrolytic cell, electrolytically generated acidic water is generated in the anode side electrolytic chamber, and electrolytically generated alkaline water is generated in the cathode side electrolytic chamber. In this case, if the electrolysis in the diaphragm electrolytic cell is continued in this state, a scale is generated in the cathode side electrolysis chamber, which may reduce the efficiency of the electrolysis operation. For this reason, in the diaphragm membrane electrolysis, the polarity of both electrodes is switched during the electrolysis operation, so that the anode side and the cathode side of the electrolysis chamber are alternately switched at predetermined time intervals to minimize the generation of scale in the electrolysis chamber. Means for suppression is employed (see, for example, Patent Document 1).
[0004]
Further, in electrolysis in the diaphragmless electrolytic cell, electrolytically generated acidic water is generated near the anode side of both electrodes disposed in the electrolysis chamber, and electrolytically generated alkaline water is generated near the cathode side. In this case, if the electrolysis in the non-diaphragm electrolytic cell is continued in this state, a scale is generated in the cathode side electrode and the vicinity thereof, and the efficiency of the electrolysis operation may be reduced. Therefore, even in the diaphragm electrolysis, by switching the polarity of both electrodes during the electrolysis operation, both electrodes of the electrolysis chamber are alternately switched between the anode side and the cathode side every predetermined time, and the anode side electrode of the electrolysis chamber And means for suppressing the generation of scale in the vicinity thereof as much as possible.
[0005]
Thus, in the electrolyzed water generating apparatus, as an electromagnetic contactor, generally, an electromagnetic contactor in which a contact portion is formed of a metal having extremely low resistance such as a silver alloy is employed, and an opening / closing operation and / or The switching operation can be performed reliably. In addition, in the electrolyzed water generating apparatus, a dilute aqueous solution of an electrolysis auxiliary agent such as an inorganic salt is used as the water to be electrolyzed so that diaphragm electrolysis or electromembrane electrolysis can be performed at a low electrolysis voltage (5 V to 10 V). Adopted.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-191008
[Problems to be solved by the invention]
By the way, in the electromagnetic contactor employ | adopted with the said electrolyzed water generating apparatus, the contact part is easy to be oxidized and an oxide film is formed in the surface at an early stage. For this reason, in the said electromagnetic contactor, there exists a possibility that the malfunctioning resulting from a contact defect may generate | occur | produce at the time of switching operation and / or switching operation. In the electrolyzed water generating apparatus, when the electrolysis operation is stopped for a long period of time, the occurrence of malfunctions tends to increase. The object of the present invention is therefore to address such problems.
[0008]
[Means for Solving the Problems]
1st invention concerning this invention is related with the voltage application method with respect to the electrode of an electrolyzed water generating apparatus. The first voltage application method according to the present invention is to apply a voltage to each electrode disposed in each electrolysis chamber of the diaphragm electrolyzer constituting the electrolyzed water generator via an electromagnetic contactor having a movable contact. A voltage applying method for performing the operation is to operate the electromagnetic contactor in a state where a voltage is applied to the electromagnetic contactor.
[0009]
A second voltage application method according to the present invention is such that a voltage is applied to each electrode disposed in an electrolysis chamber of a diaphragm electrolyzer constituting the electrolyzed water generating device via an electromagnetic contactor having a movable contact. A voltage application method for applying a voltage, wherein the electromagnetic contactor is operated in a state where a voltage is applied to the electromagnetic contactor.
[0010]
In each of these voltage application methods, the operation of the electromagnetic contactor under the voltage application state is performed before the start of the electrolysis operation in each electrolyzer, and the electrolysis operation in each electrolyzer. It can be performed during interruption, or can be performed at the time of switching the polarities of both electrodes during the electrolysis operation in each electrolytic cell.
[0011]
Moreover, 2nd invention which concerns on this invention is related with the voltage application apparatus with respect to the electrode of an electrolyzed water generating apparatus. A first voltage application device according to the present invention is a voltage application for applying a voltage to each electrode disposed in each electrolysis chamber of a diaphragm electrolyzer constituting the electrolyzed water generating device via an electromagnetic contactor. The voltage applying device according to the second aspect of the present invention is a device for applying a voltage to each electrode disposed in the electrolysis chamber of the electroless tank constituting the electrolyzed water generating device via an electromagnetic contactor. This is a voltage application device.
[0012]
In each of these voltage application devices, a driving means for opening / closing or switching the electromagnetic contactor, a voltage variable DC power supply capable of applying a voltage to the electromagnetic contactor, and a current flowing between the electrodes are detected. A current detecting means; and a control means for controlling application of a voltage from the DC power source to the electromagnetic contactor based on a signal from the current detecting means, wherein the control means has a current between the electrodes of less than a predetermined value. In this case, the electromagnetic contactor functions to apply a predetermined voltage.
[0013]
In each of these voltage application devices, the control means can be configured to have a function of synchronously performing voltage application to the electromagnetic contactor and operation of the electromagnetic contactor.
[0014]
[Operation and effect of the invention]
In each voltage application method according to the present invention, the electromagnetic contactor is operated in a state where a voltage is applied, and the operation of the electromagnetic contactor under such a voltage application state is performed by a diaphragm membrane electrolytic cell or a diaphragm membrane electrolysis. This is performed before the start of the electrolysis operation in the tank, when the electrolysis operation is interrupted, and when the polarity of both electrodes is switched during the electrolysis operation. Moreover, in each voltage application apparatus which concerns on this invention, the said voltage application method can be implemented suitably.
[0015]
According to the operation of the electromagnetic contactor under such a voltage application state, the oxide film on the surface of the contact portion in the electromagnetic contactor is destroyed by electrical or electrical and mechanical impact. For this reason, even when the surface of the contact portion of the magnetic contactor is in a state of being covered with an oxide film, it is caused by the oxide film on the surface of the contact portion during the closing operation and / or switching operation of the electromagnetic contactor. No malfunction occurs.
[0016]
Therefore, when each voltage application method according to the present invention is implemented, the operation of the diaphragm electrolysis or the non-diaphragm electrolysis is smoothly started and smoothly resumed without causing malfunction during the closing operation of the magnetic contactor. Can be made. Moreover, in the diaphragm electrolysis or non-diaphragm electrolysis, when it is desired to alternately switch both electrolytic chambers to the anode side and the cathode side during the electrolysis operation, without causing a malfunction in the switching operation of the electromagnetic contactor, It is possible to smoothly switch the both electrolytic chambers alternately on the anode side and the cathode side.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a voltage application method and a voltage application device for electrodes of an electrolyzed water generating device. In FIG. 1, the electrolyzed water generating apparatus provided with the voltage application apparatus which concerns on one Embodiment of this invention is shown roughly. The electrolyzed water generating apparatus includes a diaphragm electrolytic cell 10 and a voltage applying device 20 according to an embodiment of the present invention (a first voltage applying device of the present invention). It is a thing of composition.
[0018]
The diaphragm electrolyzer 10 in the electrolyzed water generating apparatus is divided into two compartments in the tank body 11 by a diaphragm 12, and electrodes 13 a and 13 b are provided in the compartments, respectively. The electrolysis chambers R1 and R2 are configured. The electrolyzed chambers R 1 and R 2 are supplied with water to be electrolyzed, for example, diluted saline, through the branch line of the supply line 14.
[0019]
The supplied electrolyzed water is electrolyzed in each electrolysis chamber R1, R2, and the produced electrolyzed water (electrolytically produced acidic water and electrolyzed alkaline water) is supplied to each outflow pipe 15a, 15b, a switching valve (not shown). And it is extracted to a predetermined place through a dedicated extraction line. In the electrolyzed water generating device, during the start of electrolysis operation and during electrolysis operation, a predetermined voltage is applied to the electrodes 13a and 13b via the voltage application device 20 to generate an electrolysis current in the electrodes 13a and 13b. Thus, the inside of the electrolysis chambers R1 and R2 is maintained in an electrolysis operation state.
[0020]
The voltage application device 20 includes a variable voltage DC power source 21, an electromagnetic contactor 22, a drive circuit 23 for the electromagnetic contactor 22, a current sensor 24, and a control device 25. The magnetic contactor 22 is interposed in an electric circuit that connects the DC power source 21 and the electrodes 13a and 13b, and functions as a switch device. Further, the electromagnetic contactor 22 is controlled in its opening / closing operation and switching operation by the drive circuit 23, and the operation of the drive circuit 23 is controlled based on the control device 25. The DC power source 21 is a voltage variable power source, and the voltage value to be applied to the electrodes 13 a and 13 b is controlled by the control device 25.
[0021]
The current sensor 24 is current detection means for detecting a current flowing between the electrodes 13a and 13b. The current sensor 24 outputs the current value flowing between the electrodes 13a and 13b as a signal to the control device 25. The control device 25 operates based on the detection signal output from the current sensor 24, controls the voltage value output from the DC power source 21 based on a control program for applying voltage to the electrodes 13a and 13b, The operation of the drive circuit 23 is controlled, and the opening / closing operation and the switching operation of the electromagnetic contactor 22 are controlled by the operation control of the drive circuit 23.
[0022]
In the electrolyzed water generating apparatus including the voltage applying device 20, the electrolysis operation is started by turning on the electrolysis operation start switch. In the voltage application device 20, the control device 25 starts operating when the start switch is turned on, and an electrolytic voltage (for example, a set voltage of 10 V) is applied from the DC power supply 21 to the contact portion of the electromagnetic contactor 22. In the applied state, the drive circuit 23 is operated to close the electromagnetic contactor 22 so that the electrolytic voltage set from the DC power supply 21 is applied to both electrodes 13a and 13b and the set voltage application is maintained.
[0023]
At the start of the electrolysis operation, the set value voltage is not applied to both the electrodes 13a and 13b even by the control operation of the control device 25, and the set value electrolysis current is not generated between the both electrodes 13a and 13b. In this case, the control device 25 controls the applied voltage from the DC power source 21 to be higher by a predetermined value based on the detection signal output from the current sensor 24 and applies it to the electromagnetic contactor 22.
[0024]
As a result, the contact portion of the electromagnetic contactor 22 receives an electrical shock due to a high applied voltage, the oxide film on the surface of the contact portion is destroyed, the contact portions of the electromagnetic contactor 22 are electrically connected to each other, and both electrodes 13a, A voltage higher than the set value is applied to 13b.
[0025]
Thereafter, the control device 25 controls the applied voltage from the DC power source 21 to a set value based on the detection signal output from the current sensor 24, and the voltage of the set value is passed through the electromagnetic contactor 22 to both electrodes 13 a and 13 b. To maintain the voltage application state. Thereby, the electrolytic current of a set value is maintained at the time of electrolysis operation.
[0026]
In the electrolyzed water generating apparatus, the polarity of the voltage applied to the electrodes 13a and 13b can be switched alternately between positive and negative by switching the contact of the electromagnetic contactor 22. Thereby, both electrolytic chambers R1 and R2 can be alternately switched to the anode side and the cathode side, and means for preventing the generation of scale in the cathode side electrolytic chamber can be taken.
[0027]
In the electrolyzed water generating apparatus, in order to alternately switch the two electrolysis chambers R1 and R2 during the electrolysis operation to the anode side and the cathode side, the control device 25 operates the drive circuit 23 based on the electrolysis time to move the movable contact portion. Invert the connection relationship. If the connection relationship of the movable contact portion is reversed, the polarity of the applied voltage to both electrodes 13a and 13b is reversed, and both electrolytic chambers R1 and R2 are alternately reversed to the anode side and the cathode side.
[0028]
In the electrolyzed water generating apparatus, when the movable contact portion of the electromagnetic contactor 22 is switched, the control device 25 operates the drive circuit 23 without performing control to cut off the voltage application of the electrodes 13a and 13b from the DC power supply 21. The movable contact portion of the electromagnetic contactor 22 is switched by operating.
[0029]
Thereby, the contact portion of the electromagnetic contactor 22 is electrically and mechanically impacted, and even if an oxide film is formed on the surface of the contact portion, the oxide film is destroyed, and the electromagnetic contactor 22 Are electrically connected to each other, and a voltage having a polarity set to both electrodes 13a and 13b is applied.
[0030]
The voltage application device 20 according to the present embodiment is a voltage application device that applies a voltage to each electrode of the diaphragm electrolytic cell, which is the first voltage application device of the present invention. It can be implemented by changing the diaphragm electrolytic cell to a non-diaphragm electrolytic cell and changing to a voltage applying device for applying a voltage to each electrode of the electrolytic chamber, that is, the second voltage applying device of the present invention.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram omitting a part of an electrolyzed water generating apparatus equipped with a voltage application apparatus according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Separator membrane electrolytic cell, 11 ... Tank main body, 12 ... Diaphragm, 13a, 13b ... Electrode, 14 ... Supply line, 15a, 15b ... Outflow line, 20 ... Voltage application apparatus, 21 ... DC power supply, 22 ... Electromagnetic Contactor, 23... Drive circuit, 24... Current sensor, 25.

Claims

A voltage application method for applying a voltage to each electrode disposed in each electrolysis chamber of a diaphragm electrolytic cell constituting an electrolyzed water generating device via an electromagnetic contactor having a movable contact, the electromagnetic contact A method for applying a voltage to an electrode of an electrolyzed water generating device, wherein the electromagnetic contactor is operated in a state where a voltage is applied to the vessel.

A voltage application method for applying a voltage to each electrode disposed in an electrolysis chamber of a diaphragm electrolytic cell constituting an electrolyzed water generating device via an electromagnetic contactor having a movable contact, the electromagnetic contactor A method for applying a voltage to an electrode of an electrolyzed water generating device, wherein the electromagnetic contactor is operated in a state where a voltage is applied to the electrode.

In the voltage application method with respect to the electrode of the electrolyzed water generating apparatus of Claim 1 or 2, the operation | movement of the said electromagnetic contactor under a voltage application state is performed before the start of the electrolysis operation in the said electrolytic cell, To apply voltage to the electrode of the electrolyzed water generating apparatus.

The method for applying a voltage to an electrode of an electrolyzed water generating device according to claim 1 or 2, wherein the operation of the electromagnetic contactor under a voltage application state is performed during an interruption of an electrolysis operation in the electrolytic cell. To apply voltage to the electrode of the electrolyzed water generating apparatus.

The voltage application method for the electrodes of the electrolyzed water generating device according to claim 1 or 2, wherein the operation of the electromagnetic contactor under a voltage application state is performed when the polarity of the electrodes is switched during electrolysis operation in the electrolytic cell. A method of applying a voltage to an electrode of an electrolyzed water generating device, wherein the method is performed.

A voltage applying device for applying a voltage to each electrode disposed in each electrolysis chamber of a diaphragm electrolytic cell constituting the electrolyzed water generating device via an electromagnetic contactor, and opens or closes the electromagnetic contactor. Drive means for switching operation, voltage variable DC power supply capable of applying a voltage to the magnetic contactor, current detection means for detecting a current flowing between the electrodes, and the DC power supply based on a signal from the current detection means Control means for controlling the application of voltage to the electromagnetic contactor, and the control means functions to apply a predetermined voltage to the electromagnetic contactor when the current between the electrodes is less than a predetermined value. The voltage application apparatus with respect to the electrode of the electrolyzed water generating apparatus characterized by these.

A voltage application device for applying a voltage to each electrode disposed in an electrolysis chamber of a diaphragm electrolytic cell constituting an electrolyzed water generating device via an electromagnetic contactor, and opens or closes or switches the electromagnetic contactor. A drive means for operating; a voltage variable DC power supply capable of applying a voltage to the electromagnetic contactor; a current detection means for detecting a current flowing between the electrodes; and from the DC power supply based on a signal from the current detection means. Control means for controlling the application of voltage to the electromagnetic contactor, the control means functioning to apply a predetermined voltage to the electromagnetic contactor when the current between the electrodes is less than a predetermined value. The voltage application apparatus with respect to the electrode of the electrolyzed water generating apparatus characterized by the above-mentioned.

The voltage application device for the electrode of the electrolyzed water generating device according to claim 6 or 7, wherein the control means has a function of synchronously performing voltage application to the electromagnetic contactor and operation of the electromagnetic contactor. The voltage application apparatus with respect to the electrode of the electrolyzed water generating apparatus characterized by these.