Pulse dust-removing fresh air energy-saving system in machine room

The utility model discloses a pulse dust-removing fresh air energy-saving system in a machine room, which relates to the field of ventilation cooling devices in communication machine rooms. The fresh air energy-saving system comprises an outdoor air inlet and an indoor fan of the machine room, wherein the air outlet of the fan is arranged in the machine room; the air inlet is connected with an air inlet door; the air inlet door is connected with an indoor dust remover; the indoor dust remover comprises a casing; a filtering chamber is arranged in the casing; a baffle is arranged in the filtering chamber and divides the space in the filtering chamber into an air outlet cavity and a dust-removing cavity; the dust-removing cavity is connected with the air inlet door; the air outlet cavity is connected with the fan; a plurality of tubular filtering cores are arranged in the dust-removing cavity; a filter screen covers the surface of each filtering core; through holes for installing and fixing the filtering cores