Hydrogen gas dissolving apparatus

A hydrogen gas dissolution apparatus comprising:

• an electrolysis tank having
• an anode chamber for generating oxygen gas by electrolysis and
• a cathode chamber for generating hydrogen gas by the electrolysis,
• a hydrogen extracting pipe for extracting the hydrogen gas from the cathode chamber,
• an oxygen extracting pipe for extracting the oxygen gas from the anode chamber,
• a water supply pipe for supplying water for electrolysis to the anode chamber and the cathode chamber,
• an opening pipe for opening the cathode chamber,
• a hydrogen gas dissolution module connected to the hydrogen extracting pipe to dissolve the hydrogen gas supplied from the hydrogen extracting pipe by making it contact with water,
• a first open/close valve installed on the water supply pipe,
• a second open/close valve provided in each of the oxygen extracting pipe and the opening pipe, and
• a control means for controlling the electrolysis tank, the first open/close valve, and the second open/close valves,
• wherein
• the control means causes the water for electrolysis to flow into the anode chamber and the cathode chamber by opening the first open/close valve and the second open/close valves, and then starts the electrolysis after closing the first open/close valve and the second open/close valves.