| 摘要 |
A system for electric pH control of saltwater swimming pools, comprising: (a) a pump-assisted circuit for circulating saltwater to and from a swimming pool; (b) means for determining the pH of the saltwater, preferably a pH sensor; (c) a pH control cell with an inlet and an outlet connected to the pump-assisted circuit for receiving and discharging saltwater from / to the pool, respectively, the pH control cell having at least one pair of electrodes arranged for electrolytically creating an alkaline and an acidic chemical species from saltwater flowing through the cell, the cell comprising a water flow-through compartment in which one of the electrodes is located and a species separation compartment in which the other of the electrodes is located, the compartments being separated by a separator structure which is permeable to cation and anion transfer and either highly restrictive to or blocking of electrolyte flow between both compartments; (d) a drainage structure, preferably including valve means, arranged for selectively draining liquid from the species separation compartment in controlled manner to waste; and (e) a controller functionally operative to (i) compare the pH determined or sensed with a desired pH value, (ii) apply an electric potential across the electrodes of the cell and control one or both of the potential and electric current supplied to the electrodes as a function of the pH comparison and (iii) regulate drainage of an alkaline or acidic species which has been electrolytically generated within the separation compartment from pool water flowing through the flow-through compartment as a function of positive or negative potential being applied to the electrode in the species separation compartment. |
