| 摘要 |
PROBLEM TO BE SOLVED: To remove scales which accumulates in the passage of alkali ionic water in a water electrolyzer and to remove alkali water remaining in the passage of acid water. SOLUTION: The acid water produced in a segment 3 of an electrolytic cell 1 is passed through a tube 32 to the port C of second three-way valve 33, while the alkali water produced in a segment 4 is passed through a tube 37 to the port C of a third three-way valve 34. A tube 35 to discharge the acid water is connected to the port B of the second three-way valve 33 and the port B of the third three-way valve 34. A second tube 38b for alkali water and first tube 38a for alkali water are connected to each port A of the second three-way valve 33 and third three-way valve 34, respectively. By switching the passages between the three-way valves 33, 34, the passage for alkali water is washed and the residual alkali water is discharged. |
