System for cooling motor of underground local ventilator

The utility model discloses a system for cooling an underground local fan motor. According to the utility model, a vortex tube principle is adopted, the vortex tube refrigerator is arranged on the shell of the local fan, and cold airflow generated by compressed air in an underground compressed air pipeline is blown to the motor to take away heat generated by operation of the motor, so that the purpose of cooling the motor is achieved. Cooling is achieved through the vortex tube cooler, the situation that the cooling capacity of a traditional cooling mode is insufficient is changed, and the problem that a high-temperature mine local ventilator cannot be fully cooled is solved; the device is driven by compressed air and can still be safely used in a high-gas mine; the vortex tube refrigerator is simple in structure, has no movable parts inside, is not easy to damage, and can refrigerate only by using compressed air. 本实用新型公开了一种给井下局部通风机电机降温的系统。本实用新型采用涡流管原理，将涡流管制冷器安装在局部通风机外壳上，使用井下压风管路中的压缩空气，产生的冷气流吹向电机，带走电机运行产生的热量，