CENTRIFUGAL FAN WITH AXIAL-FLOW WIND

• US 20130315724A1
• Filed: 09/05/2012
• Published: 11/28/2013
• Est. Priority Date: 05/28/2012
• Status: Active Grant

• Current Assignee: Delta Electronics Incorporated
• Original Assignee: Delta Electronics Incorporated
• Inventors: HSIUNG, Shih-Kang, CHEN, Hung-Chi, CHEN, Meng-Yu
• Granted Patent: US 10,458,417 B2
• Time in Patent Office: Days
• US Class Current: 415/206
• CPC Class Codes: F04D 17/025 comprising axial flow and radial flow stages
• CPC Class Codes: F04D 25/0613 the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
• CPC Class Codes: F04D 29/281 for fans or blowers
• CPC Class Codes: F04D 29/30 Vanes
• CPC Class Codes: F04D 29/4253 with axial entry and discharge

Abstract

A centrifugal fan with axial-flow wind includes a centrifugal fan wheel and a cover shell. The centrifugal fan wheel has a rotating core structure and a plurality of centrifugal vanes arranged around the rotating core structure; a circular wind guide surface is disposed on an internal side of the cover shell and around the rotating core structure and covered onto the centrifugal vanes, such that the circular wind guide surface can change a centrifugal airflow at the external periphery of the centrifugal vane into an axial-flow airflow.

Claims

1. A centrifugal fan with axial-flow wind, comprising:

a centrifugal fan wheel, having a rotating core structure and a plurality of centrifugal vanes arranged around the rotating core structure;

a cover shell substantially like a conical shape or a cylindrical shape and covered onto the exterior of the centrifugal fan wheel, and an internal side of the cover shell has a circular wind guide surface, and the circular wind guide surface disposed around the rotating core structure and covered onto the centrifugal vanes, and an air inlet being formed at the top of the cover shell; and

a fixed base, provided for installing the centrifugal fan wheel.

2. The centrifugal fan with axial-flow wind according to claim 1, wherein the rotating core structure comprises a fan hub and a bottom plate, and the bottom plate is extended in a radial direction from the fan hub, and the centrifugal vanes are installed on the bottom plate.

3. The centrifugal fan with axial-flow wind according to claim 2, wherein each of the centrifugal vanes has a distal end bent towards a forward direction of the centrifugal fan wheel.

4. The centrifugal fan with axial-flow wind according to claim 1, further comprising a wind outlet formed between the cover shell and the fixed base and the wind outlet arranged substantially parallel to an opening of the air inlet.

5. The centrifugal fan with axial-flow wind according to claim 1, wherein the fixed base includes a shaft sleeve vertically disposed thereon for installing the rotating core structure, and the centrifugal fan wheel is installed to the fixed base by the rotating core structure.

6. A centrifugal fan with axial-flow wind, comprising:

a centrifugal fan wheel, having a fan hub, a bottom plate and a plurality of centrifugal vanes arranged around the rotating core structure; and

a cover shell, covered onto the exterior of the centrifugal fan wheel, and an internal side of the cover shell has a circular wind guide surface, and the circular wind guide surface disposed around the rotating core structure and covered onto the centrifugal vanes, and the cover shell having an air inlet formed at the top of the cover shell;

wherein, each of the centrifugal vanes has a distal end extended beyond the bottom plate and bent towards a forward direction of the centrifugal fan wheel.

7. The centrifugal fan with axial-flow wind according to claim 6, further comprising a fixed base provided for installing the centrifugal fan wheel 1.

8. The centrifugal fan with axial-flow wind according to claim 7, wherein the fixed base includes a shaft sleeve vertically disposed thereon for installing the fan hub, and the centrifugal fan wheel is installed on the fixed base by the rotating core structure.

9. The centrifugal fan with axial-flow wind according to claim 7, wherein the cover shell is substantially like a conical shape or a cylindrical shape, and a wind outlet is formed between the bottom of the cover shell and the fixed base.

10. The centrifugal fan with axial-flow wind according to claim 9, wherein the wind outlet is substantially parallel to an opening of the air inlet.