Waste heat secondary compression heat supply circulating system of freeze dryer compressor

A waste heat secondary compression heat supply circulation system of a freeze dryer compressor comprises a refrigeration compressor and a heat exchanger, a hot air exhaust pipeline of the refrigeration compressor is communicated with the air inlet end of the heat exchanger, and a medium in the heat exchanger is communicated with a heated plate layer through a circulation medium pipeline. The medium outflow end of the heated plate layer is communicated with the medium backflow end of the heat exchanger through the medium circulating pump and the circulating medium pipeline, and the heated material is heated by the heated plate layer. Exhaust heat energy of the compressor is directly used, heat is directly supplied to a heat source of freeze-dried materials through the heat exchange device, and waste heat utilization is achieved; and the heat additionally provided by the freeze-dried material and the cooling capacity required by waste heat cooling of the compressor are reduced. 一种冻干机压缩机废热二次压缩供热循环系统，包括制冷压缩机和换热器，