PURPOSE: To provide a heat accumulating heat exchanger which can be manufactured simply and for which the manufacturing cost can be reduced and the range of application extended and which can be used for equipment in common if the shape or size of the equipment to which the heat exchanger is applied is different and provide a compressor for which the work of installation and removal of the heat accumulating heat exchanger is simple and the whole body of which is not large and in which the quantity of used heat accumulating material is small and for which the manufacturing cost can be reduced.

CONSTITUTION: A sheet-shaped heat accumulating vessel is formed by a bottom plate 51 and cover plate 52 with a plurality of recessed and projecting sections 52a, 52b, and in this heat accumulating vessel 5 a heat accumulating material 53 is filled, and a heat exchanging pipe 6 is assembled to the recessed section 52a of the heat accumulating vessel 5 to form a heat accumulating heat exchanger 4. And, this heat accumulating heat exchanger 4 is bent with the cover plate being positioned on the side of the internal face and the bent heat exchanger 4 is wound and fixed on to the outer circumferential face of the casing 11 of the compressor to constitute a compressor provided with the heat accumulating heat exchanger 4.