Energy-saving air supply opening

The invention discloses an energy-saving air supply opening, which comprises four long edges and four short edges, wherein the four long edges and the four short edges are sequentially and separatelyconnected to form a sealed body; the long edges are arc-shaped edges inwards recessed to the sealing body; the short edges are straight lines and have the same shapes; the air supply opening is symmetrical by using the center of the sealing body as the symmetrical center; a plurality of round baffle plates are arranged in the air supply opening and are uniformly distributed on the air supply opening; one baffle plate is positioned in the center position of the air supply opening; the other baffle plates are in symmetrical arrangement by using the air supply opening as the center. The air supply opening can ensure the air supply air flow to be sent to a specific region; the square shape can be effectively formed; the air quantity diffused out of a target region is reduced; the air supply isvery concentrated; the en