Blower impeller of double-layer flow air handling unit

The utility model discloses a double-layer flow air handling unit blower impeller which comprises an impeller rear ring, upper blades, lower blades, upper and lower blade partition plates, an impeller front ring and an internal circulation air inlet horn mouth air guide structure, and is characterized in that the lower blades are uniformly welded at the edge of the upper surface of the impeller rear ring; a blade up-and-down partition plate is welded between the upper ends of the lower blades, upper blades are evenly welded to the edges of the upper surfaces of the blade up-and-down partition plate, the upper blades and the lower blades are the same in arrangement, an impeller front ring is welded to the outer sides of the upper ends of the upper blades, and the sections of the upper blades and the lower blades are of an arc-shaped structure. An inner circulation air inlet horn mouth air guide mechanism is arranged on the inner side between the upper blades, impact of airflow on the front ends and the rear en