To provide a drying agent unit for accumulator which can be contained in the tank of a small type accumulator by utilizing the inner space of the tank as effectively as possible while exhibiting excellent seating stability to a suction pipe, and an accumulator employing it.

The drying agent unit 20 has a pair of parts 22 and 23 projecting downward from the lower part of the unit to form a receiving recess 24 in the lower surface of the unit. A part of the drying agent unit 20 is disposed in a space defined by the left and right tubular parts 4a and 4b of a suction pipe 4 and the tubular part 4c at the bottom of the suction pipe is clamped between the pair of parts 22 and 23 projecting downward from the drying agent unit thus constituting an accumulator 1.