Patent ID: 8366886

Claim:
A fluorine/fluoride gas generator, comprising: an electrolyte made of mixed molten salt containing hydrogen fluoride in an electrolytic cell including an anode chamber and a cathode chamber, the generator generating a gas containing fluorine by electrolyzing the electrolyte; a raw material supply pipe that supplies an electrolysis raw material, the pipe reaching an inside of the electrolyte in the electrolytic cell; a bypass pipe which is branched from a middle of the raw material supply pipe and connects only the middle of the raw material supply pipe to a gas phase area of the electrolytic cell; a normally-closed valve provided in a middle of the raw material supply pipe and is configured to be closed in a natural state and configured to automatically open in response to an electric signal from the outside or a gas pressure when necessary; a normally-open valve which is configured to open in a natural state and configured to be automatically closed in response to an electric signal from the outside or a gas pressure when necessary; and the normally-closed valve, on the raw material supply pipe, is provided on an upstream side of a part from which the bypass pipe is branched.