Cold storage medium container

A cold storage medium container that is in contact with refrigerant pipes of a cold storage heat exchanger by brazing and contains a cold storage medium for storing cooling capacity of a refrigerant, wherein

• peripheral edge portions of a pair of rectangular container members are brazed to each other to form a rectangular container body having a cold storage medium filling opening at an end thereof, the container body has therein an inner fin which is formed in rectangular shape composed of two long sides and two short sides and of which a cross section in parallel with the short sides is formed in a corrugated shape, and is filled with the cold storage medium through the cold storage medium filling opening therein,
• engagement portions project toward an inside of the container body to engage a part of a corrugated short sides at each end of the inner fin toward the short sides in the direction in parallel with the long sides, to thereby position the inner fin in the container body,
• a gap is disposed between the corrugated short sides of the positioned inner fin and an inner wall of the container body,
• the engagement portions which project toward the inside of the container body protrude from a bottom surface of the container along the corrugated short sides of the inner fin, and
• the corrugated short sides of the inner fin are formed in parallel with short sides of the container body.