▎ 摘　　要

NOVELTY - The utility model model relates to a vacuum freeze drier for intermittently defrosting, comprising a drying chamber, a left water collecting chamber and a right water collecting chamber; the left and right parts below the drying respectively are provided with a left water catching cabin and a right water catching cabin; outside of the drying chamber is provided with a curved surface heating layer from inside to outside respectively a sealing insulating layer and a metal shell, the curved surface heating layer is composed of multiple pieces of densely distributed graphene heating plate, the heating is fast and the heating uniformity of the material is improved; a clapboard set between the left water collecting chamber and the right water collecting chamber; the middle of the left water collecting chamber and the right water collecting chamber is provided with a vacuum pump, the vacuum pump is connected with the gas conveying pipe, one end of the gas conveying pipe is connected with the air suction valve, the air suction valve extends into the drying chamber, the other end of the gas conveying pipe respectively connected with the left water capturing chamber or the right water capturing chamber; the outside of the left water collecting cabin and the right water collecting respectively is provided with a freezing pipe layer and a heating pipe layer from inside to outside; the heating pipe layer releases heat in the defrosting stage to liquefy the ice on the surface of the cabin wall, the heat conducting area of the cabin wall increases the defrosting efficiency and saves the water resource.