Producing apparatus and producing method of hypochlorous acid water

Abstract

In a producing apparatus and a producing method of effectively and safely producing hypochlorous acid water suitable for sterilization in a desired amount of production and in a desired concentration, the producing apparatus is compact and includes an electrolytic vessel to which dilute hydrochloric acid is supplied and in which no diaphragm exists between an anode and a cathode for generating a chlorine gas, a storage tank in which water is stored, a circulation pipe into which water flows from the storage tank, in which the water circulates, and from which the water returns into the storage tank, and a mixing pipe which couples between the electrolytic vessel and the circulation pipe, mixes the chlorine gas from the electrolytic vessel with the water in the circulation pipe, and produces hypochlorous acid water.

1 . A producing apparatus of hypochlorous acid water, comprising an electrolytic vessel to which dilute hydrochloric acid is supplied and in which no diaphragm exists between an anode and a cathode for generating a chlorine gas;
 a storage tank in which water is stored;   a circulation pipe into which water flows from the storage tank, in which the water circulates, and from which the water returns into the storage tank; and a mixing pipe which couples between the electrolytic vessel and the circulation pipe, mixes the chlorine gas from the electrolytic vessel with the water in the circulation pipe, and produce hypochlorous acid water.   
     
     
         2 . The producing apparatus of hypochlorous acid water according to  claim 1 , wherein:
 a plurality of the storage tanks are provided;   a flow-in pipe portion of the circulation pipe is branched to a plurality of flow-in branch pipe portions, and, a flow-out pipe portion of the circulation pipe is branched to a plurality of flow-out branch pipe portions; the respective flow-in branch pipe portions and the respective flow-out branch pipe portions are connected in the respective storage tanks; and switch valves are interposed to branch portions of the flow-in pipe portion and the flow-out pipe portion.   
     
     
         3 . A producing method of hypochlorous acid water comprising:
 a step of generating a chlorine gas by subjecting dilute hydrochloric acid being supplied to an electrolytic treatment in an electrolytic vessel in which no diaphragm exists between an anode and a cathode; and   a step of producing hypochlorous acid water having a desired amount of production and a desired concentration by injecting the chlorine gas into the water circulating in the circulation pipe.   
     
     
         4 . A producing method of hypochlorous acid water comprising:
 a step of generating chlorine gas by continuously subjecting dilute hydrochloric acid being supplied to an electrolytic treatment in an electrolytic vessel in which no diaphragm exists between an anode and a cathode;   a step of producing hypochlorous acid water by mixing the chlorine gas with the water in a circulation pipe into which water flows from inside of a storage tank, in which a desired amount of water is stored, in which the water circulates, and from which the water returns into the storage tank; and   a step of producing hypochlorous acid water having a desired amount of production and a desired concentration by gradually increasing the concentration of the hypochlorous acid water in the storage tank.