Patent ID: 8491261
Filing Date: 2013-07-23
Classification: F04D

Abstract:
1. A blower, comprising: an impeller having a shaft; and a housing having an outlet, a throat portion and a bottom, wherein the bottom has a main part and a concave part connected with the main part, the main part is higher than the concave part, the impeller is disposed within the housing, and the impeller rotates via the shaft, a first axial line and a second axial line are perpendicular to each other, and both intersect at a position where the shaft is located to divide the housing into four regions, and both of the throat portion and the concave part are disposed adjacent to the outlet and disposed in the first region of the four regions, wherein the concave part is disposed adjacent to the throat portion, wherein the throat portion has an inward arc toward to the first region, and the throat portion protrudes from a surface of the concave part.