| 摘要 |
PCT No. PCT/NO91/00118 Sec. 371 Date Mar. 19, 1993 Sec. 102(e) Date Mar. 19, 1993 PCT Filed Sep. 16, 1991 PCT Pub. No. WO92/05597 PCT Pub. Date Apr. 2, 1992.This invention relates to a method and means for preventing or greatly reducing biological growth on the cathode (7, 11) of a sea water cell (1) which is based on electrolytic reaction between oxygen, water and a metal anode (6, 10), and which is arranged to be connected to a load (3, 15) through a DC/DC converter (2, 14). An external power supply (5, 16) which may be powered from the load (3, 15), is at intervals connected to an electrode of copper (or copper alloy) (8, 12) included with the cell structure, to electrolytically dissolve copper. The negative terminal (18) of the power supply (16) may at intervals be connected to an auxiliary electrode (13) of a suitable metal or metal alloy such as copper, titanium or stainless steel. The interconnection of the power supply (5, 16) to the electrode (8, 12), and possibly to the auxiliary electrode (13) is controlled by a timing device (4, 17). At intervals, the same or a separate timing device (4, 17) may turn-off/switch-on the DC/DC converter (2, 14).
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