▎ 摘　　要

NOVELTY - The utility model claims a vacuum freeze drier, comprising a drying box and a freezing collecting box; the drying box is provided with a plate layer; the plate layer is provided with a clapboard; the clapboard comprises a groove and a cover plate pin; the top of the groove is provided with a cover plate pin; the outer surface of the groove is provided with a stainless steel surface; the inner surface of the groove is provided with a first stainless steel cladding; the bottom of the groove is provided with a first upper cover; the inner side of the groove is filled with the first graphene. The vacuum freeze drier of the utility model, the heat of the plate layer is transmitted to the first upper top cover of the groove; then according to the first graphene filled in the groove, the heat of the first upper cover is transmitted to the convex heat transfer surface through four side faces of the groove so as to be transmitted to the second upper top cover; then, it is transmitted to the contact pin; six surfaces of the clapboard are capable of transferring heat; the heat is fully used; the temperature of the material in the material groove is very uniform through the first graphene and the second graphene heat transfer; the purpose of uniform hot spot of the material is realized.