The invention relates to the technical field of cross flow fans, in particular to a dry-type
transformer cross flow cooling fan. Comprising a lower shell, an upper shell is arranged at the top of the lower shell, a transverse flow
impeller is rotationally installed between the lower shell and the upper shell, air inlets are formed in the front ends of the lower shell and the upper shell, transverse plates are welded to the rear ends of the lower shell and the upper shell, and the two transverse plates are distributed up and down to form an air outlet; an intercepting plate is fixedly connected to the bottom of the inner wall of the upper shell, an
air channel is formed in the upper shell, and when
airflow passes through the air outlet, part of
airflow at the air outlet is intercepted by the intercepting plate, enters the
air channel and is exhausted upwards to form an air curtain. By means of the intercepting plate and the
air channel, part of air outlet
airflow is intercepted to form an air curtain to block hot air
backflow, air outlet is concentrated in cooperation with the guide plate of the lower shell, the
cooling effect is enhanced, meanwhile, the air inlet opening is increased by means of the adjusting
assembly, the air inlet amount is increased, and therefore the problems of hot air circulating suction and low
cooling efficiency in the background technology are solved.