Convection type rapid temperature control device for microbial incubator

The utility model discloses a convection type rapid temperature control device for a microbial incubator, which comprises a reagent disc, a heat exchange assembly and a temperature control assembly, and the heat exchange assembly comprises a convection heat transfer sheet, a semiconductor refrigeration sheet, an aluminum extrusion radiator and a cooling fan which are sequentially arranged from bottom to top; a heat exchange convection area is formed between the convective heat transfer sheet and the reagent disc; the area of the convective heat transfer sheet is larger than that of the reagent disc; the semiconductor chilling plate is provided with a first heat transfer end and a second heat transfer end, the first heat transfer end is in contact with the convective heat transfer plate, and the second heat transfer end is in contact with the aluminum extrusion radiator. The device is simple in structure and small and exquisite in size, a to-be-cultured object does not need to be moved from the culture box to