Propeller fan

A propeller fan comprising:

• a hub including a side surface around a center axis;
• and
• a plurality of blades disposed on the side surface of the hub, wherein
• the blades each include a blade surface part, which is extended from a base end connected to the side surface of the hub to an outer edge, and the blade surface part includes an inner peripheral part, which is positioned on the base end side, and an outer peripheral part, which is positioned on the outer edge side,
• an inner peripheral blade, which extends from the side surface of the hub toward the outer edge side, is formed on a positive pressure surface of the blade surface part at the inner peripheral part of each of the blades,
• the inner peripheral blade includes a plurality of blade elements that project from the positive pressure surface of the blade surface part toward a positive pressure side, and are arranged side by side in a rotation direction of the blade, and
• when an apex of a first blade element projecting from the positive pressure surface is A, a distance from the center axis to the apex A is r, and a point having the distance r from the center axis on a front edge in a rotation direction of the first blade element is B, the first blade element among the blade elements that is arranged on a front edge side in the rotation direction of the blade, is formed to have a blade angle equal to or larger than a predetermined first angle and equal to or smaller than a second angle that is larger than the first angle, the blade angle being formed by a direction along a chord of the first blade element along a direction that connects the apex A with the point B, and a plane orthogonal to the center axis.