Fan and impeller thereof

US20080240921A1Inactive Publication Date: 2008-10-02DELTA ELECTRONICS INC
12 Cites 2 Cited by

Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
DELTA ELECTRONICS INC
Publication Date
2008-10-02
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

An impeller used in a fan is provided. The impeller includes a hub and a plurality of blades disposed around the hub. The hub has at least one curve-shape surface. A fan comprises a fan frame, an impeller, and a motor. The impeller disposed in the fan frame comprises a hub and a plurality of blades disposed around the hub, wherein the hub has at least one curve-shape surface and an airflow guiding structure disposed on an outer circumference of the hub. The motor is disposed in the impeller for driving the impeller.
Need to check novelty before this filing date? Find Prior Art

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This Non-provisional application claims priority under 35 U.S.C. §119(a) on Patent Application No(s). 096111219, filed in Taiwan, Republic of China on Mar. 30, 2007, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION

[0002] 1. Field of Invention

[0003] The present invention relates to a fan and an impeller thereof, and in particular to a fan and the impeller thereof with increased performance.

[0004] 2. Related Art

[0005] The efficiency of a fan is evaluated by the air pressure and air flow that it can generate. To increase the air pressure and air flow, one method is to increase its rotation speed. However, noises come with high-speed rotations.

[0006] FIG. 1 is a cross-sectional view of a conventional fan 1. The fan 1 includes a fan frame 10, a motor 11 and an impeller 12.

[0007] The impeller 12 includes a hub 121 and several blades 122 disposed around the hub 121. However, since the space inside the fan f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More