FAN FOR OVENS FOR COOKING FOODS

摘要

Fan for ovens for cooking foods, which comprises: a support plate arranged substantially orthogonal to the rotation axis of the fan; and multiple blades projectingly fixed on the support plate and radially arranged around the rotation axis. Each blade of the fan is provided with an internal edge, which is shaped with a convex portion that is projectingly extended between a first and a second concavity of the internal edge itself.

主权项

1. Fan (1) for ovens for cooking foods, which is provided with its own rotation axis (X) and is extended along said rotation axis (X) between a front side (2) and a rear side (3) directed in opposite directions with respect to each other, and is provided with a peripheral side (4) which is extended around said rotation axis (X) between said front side (2) and said rear side (3);
said fan (1) comprising:
a support plate (5), which is arranged substantially orthogonal to said rotation axis (X) and is provided with a first face (6), which delimits the rear side (3) of said fan (1), and a second face (7) directed towards the front side (2) of said fan (1);multiple blades (8) projectingly fixed on the second face (7) of said support plate (5) and arranged around said rotation axis (X); each said blade (8) being provided with:
a rear edge (15) fixed to the second face (7) of said support plate (5);an external edge (16) arranged on the peripheral side (4) of said fan (1);an internal edge (17) placed to connect between said external edge (16) and said rear edge (15); said fan (1) being characterized in that the internal edge (17) of each said blade (8) comprises:
a first section (21) which delimits a convex portion (18) of said blade (8) projectingly extended at least towards the rotation axis (X) of said fan (1);a second section (22) which delimits a first concavity (19) of said blade (8) and is extended between said first section (21) and said rear edge (15);a third section (23) which delimits a second concavity (20) of said blade (8) and is extended between said first section (21) and said external edge (16).