Multi-channel heat storage device

The utility model discloses a multi-channel heat storage device which comprises at least one heat storage assembly, each heat storage assembly comprises an inner side pipe body, a middle pipe body and an outer side pipe body which are coaxially sleeved from inside to outside, and the length of the middle pipe body is smaller than that of the inner side pipe body and larger than that of the outer side pipe body; the limiting assembly comprises six flat plates uniformly provided with a plurality of through holes, and the flat plates are divided into two first pore plates, two second pore plates and two third pore plates according to different diameters of the through holes; the diameters of the two first pore plates, the two second pore plates and the two third pore plates are R4, R5 and R6 respectively; the two ends of the inner side pipe body, the two ends of the middle pipe body and the two ends of the outer side pipe body are sleeved with the two third pore plates, the two second pore plates and the two fir