Patent ID: 7175745

Claim:
A method of manufacturing an electrolyzer unit comprising the steps of: arranging a partition member on a front surface of a first pan formed with flange portions at its periphery and welding at least a part of the partition member to the flange portions of the first pan to form a gas-liquid separation chamber; arranging a partition member on a front surface of a second pan formed with flange portions at its periphery and welding at least a part of the partition member to the flange portions of the second pan to form a gas-liquid separation chamber; arranging a plurality of first ribs on the front surface of the first pan and welding together the front surface of the first pan and the respective ribs; arranging a plurality of clad plates on a back surface of the first pan and welding together the back surface of the first pan and one surface of the respective clad plates; putting the back surface of the first pan over a back surface of the second pan and welding the back surface of the second pan to the other surface of the clad plates; arranging a plurality of second ribs on the front surface of the second pan and welding the front surface of the second pan to the respective ribs; and inserting frame members into spaces formed between the flange portions of the first pan and the flange portions of the second pan, wherein when arranging the first ribs on the front surface of the first pan, front ends of the respective ribs are fitted into a plurality of openings formed beforehand in the partition member and then welding between the front surface of the first pan and the respective ribs is carried out; and when arranging the second ribs on the front surface of the second pan, front ends of the respective ribs are fitted into a plurality of openings formed beforehand in the partition member and then welding between the front surface of the second pan and the respective ribs is carried out.