▎ 摘　　要

NOVELTY - The utility model claims an efficient heat exchange device of soil source heat pump, belonging to the technical field of geothermal recovery; comprising a pipeline system embedded in the soil, the pipeline system comprises a heat exchange pipe, the heat exchange pipe comprises an inner pipe and an outer pipe double-layer structure, the inner pipe and the outer pipe are fixedly connected by a connecting rib; the pipe wall of the outer pipe is spiral corrugated, the inner wall of the inner pipe is uniformly provided with a convex edge along the axial direction; the outer surface of the inner pipe is provided with a graphene heat conducting film; a first heat exchange area is formed between the inner pipe and the outer pipe, a second heat exchange area is formed in the inner pipe; The utility model forms a sufficient heat-conducting structure, reduces the heat exchange coil area, improves the heat exchange rate of soil in unit area; It solves the problem that the heat exchanging device of the heat pump of the soil source is small.