Energy saving fan

摘要

An energy saving fan comprising a pellet (1), a hub (2) connected with the pellet (1) and a plurality of curve shaped blades (3) extended radially outward from the hub (2). The roots (31) of the adjacent blades (3) are connected by a curved shaped connecting part (32) extending from the trailing edge (33) of a previous blade to the leading edge (34) of a subsequent blade. A first reinforcing rib (41) is formed on a windward surface (35) of each blade (3) from a trailing edge corner (331) to the hub (2), a second reinforcing rib (42) is formed on a leeward surface (36) of each blade (3) from a leading edge corner (341) to the hub (2), and a third reinforcing rib (43) is formed on the leeward surface (36) of each blade (3) from the hub (2) to the trailing edge (33). These reinforcing ribs improve the strength of the blade roots and prolong the service life of the blades.

主权项

1. A high efficiency, energy saving and cost saving fan comprising a pellet, a hub connected with the pellet, and a plurality of curve shaped blades extended radially outward from the hub, the hub having a predetermined thickness, characterized in that:
roots of adjacent blades are connected together by a curve shaped connecting part extending from a trailing edge of a previous blade to a leading edge of a subsequent blade in such a manner that the curve shaped connecting part extends across at least a portion of the thickness of the hub, a first reinforcing rib is formed on a windward surface of each said blade from a corner of the trailing edge to the hub, a second reinforcing rib is formed on a leeward surface of each said blade from a corner of the leading edge to the hub, and a third reinforcing rib is formed on the leeward surface of each said blade from the hub to the trailing edge.