摘要:
To achieve a simple configuration of cooling mechanism of an apparatus for producing hydrogen and oxygen and make it possible to freely select the type of heat exchanger without any restrictions so as to improve the cooling efficiency of the heat exchanger. A heat exchanger 7 for cooling deionized water in a deionized water tank 1 which contains an electrolytic cell 2 is installed outside the tank 1, an inlet 7a of the heat exchanger 7 is connected up with a deionized water flow outlet 10 that is below the level of the deionized water in the tank 1 by a pipe 9a, and an outlet 7b of the heat exchanger 7 is connected up with a deionized water flow inlet 11 that is beneath the above-mentioned deionized water flow outlet 10 in the tank 1 by a pipe 9b.