Patent ID: 8419926

Claim:
An electrolyzed water producing method, comprising steps of: circulating an aqueous electrolyte solution containing a supplied electrolyte to a first electrolytic chamber of a pair of electrolytic chambers opposed to each other across an intervening ion permeable diaphragm while supplying raw water to a second electrolytic chamber of the pair of electrolytic chambers; applying voltage at an electrolytic voltage level to a pair of electrodes disposed in the respective electrolytic chambers with the diaphragm intervening therebetween, to electrolyze the raw water and the aqueous electrolyte solution, thereby producing electrolyzed water in the second electrolytic chamber; monitoring an electrolytic current generated by the applied voltage and comparing the electrolytic current to a predetermined current; and controlling supply of the electrolyte to the electrolyte solution to increase the electrolytic current; wherein applying voltage at the electrolytic voltage level to the pair of electrodes comprises increasing the electrolytic voltage level during a first predetermined time and maintaining the electrolytic voltage level at a predetermined voltage level after the first predetermined time when the electrolytic current is less than the predetermined current after the first predetermined time; and wherein the first predetermined time is an amount of time required for the electrolytic current to reach the predetermined current in a case where a predetermined amount of electrolyte is provided to the aqueous electrolyte solution after starting the electrolysis of water, the predetermined amount of electrolyte being an amount to maintain a concentration of the aqueous electrolyte solution within a predetermined range as well as to maintain a pH value within a predetermined region.