To provide a hydrogen gas discharger for an absorption refrigeration unit which can secure airtightness regardless of temperature change by improving the adhesion to the joint of a palladium pipe.
In a hydrogen gas discharger 9 which allows the permeation of the gas generated in an absorption refrigerating unit consisting of a gas reservoir 10 for reserving non-condensing gas, a paradigm pipe 11 or a palladium alloy pipe provided in the reservoir 10, and a heater 18 for heating the pipe 11, as for the paradigm pipe 11 or the paradigm alloy pipe, one end is sealed in cap form, and the open end on the other side is connected to a pipe joint provided in the gas reservoir 10, and this pipe joint comprises the joint body 15, a nut 17, and a sleeve 16, and it is one which is constituted so that at least one end of the sleeve 16 may bite in the palladium pipe or the palladium alloy pipe by inserting the paradigm pipe 11 or the palladium alloy pipe and fastening the nut 17, and it is good to provide the joint inside the pipe 11 with a backup ring, or to increase the thickness of the joint itself of the pipe more than the other section of the pipe.
INOUE OSAYUKI
MOCHIZUKI SADAICHI
MATSUDA NOBUTAKA
