To provide a device for preventing fouling and a method of preventing fouling which prevent interference between a current used for preventing fouling and a cathodic protection current prevent the change of the surface state of an electric catalyst covered with an anode-forming member caused by the adhesion and deposit of minute quantities of iron ions, manganese ions or the like contained in the seawater, and can securely and easily prevent the adhesion of aquatic creatures in the sea.
The device for preventing fouling is constituted of the anode-forming member, the electric catalyst, a conductive body, and a direct-current power supply. The anode-forming member is integrally provided on the surface of a component of the structure which is brought into contact with the seawater, through the medium of an insulator. The electric catalyst is constituted of a material which is coated on the surface of the anode-forming member, and is electrochemically active and stable. Then the conductive body is provided so that it is brought into contact with the seawater, and the direct-current power supply is provided with a positive electrode, a negative electrode, an automatic potential control part, and a switching circuit part. The anode-forming member and the positive electrode are electrically connected to each other, and potential between the conductive body and the negative electrode is controlled by the automatic potential control part. Then the energized time and the energization-stopping time of the direct-current power supply is arbitrarily set by the switching circuit part.
COPYRIGHT: (C)2008,JPO&INPIT
NAKAJIMA SHOJI
MATAHASHI TOMOKAZU
YAMAYA NOBUO
| JP2004339782A | 2004-12-02 | |||
| JP2002302923A | 2002-10-18 | |||
| JPH11123382A | 1999-05-11 | |||
| JPH09275882A | 1997-10-28 |
Shunguchi Sekiguchi
Akio Saruwatari
Junichi Furukawa
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