Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1989-10-11
1991-07-23
Valentine, Donald R.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204270, 204271, 204275, 204278, C25B 904, C25B 1502
Patent
active
050341103
ABSTRACT:
A self cleaning electrolytic chlorinator for swimming pools and water treatment plants comprises a low voltage D.C. power supply unit which cyclically reverses the polarity at the electrodes to shed accumulated deposits which plate out on the electrode surfaces. Damage to the delicate catalytic coating on the electrodes is prevented by stepping the applied potential from a maximum to a minimum value before changing polarity and then stepping the applied potential back to a maximum value.
REFERENCES:
patent: 3222269 (1965-12-01), Stanton
patent: 4229272 (1980-10-01), Yates
patent: 4255246 (1981-03-01), Davis et al.
patent: 4525253 (1985-06-01), Hayes et al.
patent: 4525272 (1985-06-01), Henson
patent: 4565617 (1986-01-01), Ahuja
patent: 4680114 (1987-07-01), Hayes
patent: 4769119 (1988-09-01), Grundler
patent: 4936979 (1990-06-01), Brown
Australian Patent Specification Number 43,263/72 entitled Method of and Apparatus for, Chlorinating Swimming Pool Water & Published on Dec. 13, 1972 discloses the Chloration of Swimming Pool Water by the use of Immersed Electrodes.
Australian Patent No. 569026 by Durack, discloses a device for dissolving chlorine in water by the use of coated electrodes. This Reference also discusses the problems of calcium salt plating the cathode. This Reference was also assigned to SAL-Chlor PPY Ltd., as in the Present U.S. Patent Application.
Glore Herbert F.
Glore Rodney L.
Sal-Chlor Pty. Ltd.
Valentine Donald R.
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