Photoelectric smoke sensor capable of preventing dust retention

The invention discloses a photoelectric smoke sensor capable of preventing dust retention, and relates to the technical field of smoke sensors, the photoelectric smoke sensor comprises a fixed disc, an induction assembly, an early warning center and a dust removal assembly, a mounting cavity is arranged in the fixed disc, the early warning center is fixedly connected with the mounting cavity, the induction assembly is fixedly connected with the fixed disc, and the dust removal assembly is fixedly connected with the early warning center. The dust removal assembly is arranged in the induction assembly and comprises a conversion part and a collection part, the conversion part is fixedly connected with the fixing disc, and the collection part is fixedly connected with the induction assembly. According to the dust removal assembly, on one hand, surface layer airflow isolation of an early warning center is achieved, on the other hand, through graded smoke separation, the detection precision of the smoke sensor in t