Advection-type fan and an impeller thereof

摘要

An impeller of an advection-type fan includes a metal base plate, a shaft and a plurality of plastic blades. The metal base plate includes a shaft-coupling portion and a peripheral portion, with a first plane facing in a first direction and a second plane facing in a second direction opposite to the first direction arranged between the shaft-coupling portion and the peripheral portion. The metal base plate is in a plane form between the shaft-coupling portion and the peripheral portion. The shaft has a fixing end and a free end. The fixing end is coupled with the shaft-coupling portion, and the free end extends in the first direction. Each plastic blade has a coupling portion and an air-driving portion. The coupling portion is coupled with the peripheral portion, and the air-driving portion extends in the second direction.

主权项

1. An impeller of an advection-type fan comprising:
a metal base plate comprising a shaft-coupling portion and a peripheral portion distant from the shaft-coupling portion, wherein a first plane facing in a first direction and a second plane facing in a second direction opposite to the first direction are arranged between the shaft-coupling portion and the peripheral portion, wherein the metal base plate is in a plane form between the shaft-coupling portion and the peripheral portion, and wherein the first plane is provided with a permanent magnet; a shaft having a fixing end and a free end distant from the fixing end, wherein the fixing end is coupled with the shaft-coupling portion of the metal base plate, and wherein the free end extends axially in the first direction; and a plurality of plastic blades each having a coupling portion and an air-driving portion, wherein the coupling portion is coupled with the peripheral portion of the metal base plate, wherein the air-driving portion axially extends in the second direction, and wherein the metal base plate further comprises a plurality of through-holes extending through the first and second planes, with a rib formed between two adjacent through-holes.