Device with selected current level for active protection...

C - Chemistry – Metallurgy – 23 – F

Patent

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Details

C23F 13/04 (2006.01) C23F 13/20 (2006.01) C23F 14/00 (2006.01) H02H 3/20 (2006.01)

Patent

CA 2348643

The invention concerns a device for active protection against corrosion in a water heater comprising a reservoir (48) of conductive fluid wherein, while it is in operation, is immersed an electrode (50), including an electronic circuit with a first terminal (44) designed to be electrically connected to the reservoir (48), a second terminal (42) designed to be electrically connected to said electrode (50) to polarise it. The electronic circuit comprises at least a unit stabilising the polarisation voltage (4) connected to said second terminal (42), and a control unit (6) for decelerating the potential difference between the first and second terminals (42, 44), comparing it with at least a predetermined threshold voltage value, and transmitting a reference signal when said threshold value is exceeded.

Dans un chauffe-eau du type comprenant un réservoir (48) d'un fluide conducteur dans lequel, durant le fonctionnement, est plongée une electrode (50), un dispositif de protection active contre la corrosion comprend un circuit électronique avec une première borne (44) destinée à être connectée électriquement au réservoir (48), et une seconde borne (42) destinée à être connectée électriquement à ladite électrode (50) pour la polariser. Le circuit électronique comprend au moins un bloc de stabilisation de la tension de polarisation (4) connecté à ladite seconde borne (42), et un bloc de contrôle (6) servant à décélérer la différence de potentiel entre la première borne et la seconde (42, 44), à la comparer avec au moins une valeur de tension de seuil déterminée à l'avance, et à émettre un signal de référence au dépassement de ladite valeur de seuil.

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