Improved cooling fan structure that can change fluid flow direction and improve performance
Patent Information
- Application Number
- TW115203399
- Authority / Receiving Office
- TW · TW
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-04-17
- Publication Date
- 2026-08-11
- Estimated Expiration
- 2036-04-16
Smart Images
Figure TWG2TB001906299_001 
Figure TWG2TB001906299_002 
Figure TWG2TB001906299_003
Abstract
Claims
1. An improved structure for a cooling fan that can change the direction of fluid flow and improve efficiency, comprising: a hub, wherein a drive shaft is provided at the center of the hub; a fan blade assembly, including a plurality of fan blades arranged around the periphery of the hub, the fan blades having an upper surface and a lower surface; and a guide band ring assembly, including a plurality of guide band walls with thickness, the guide band walls being connected between two adjacent fan blades, and one side of the guide band wall being connected to the upper surface of one of the blades, and the other side of the guide band wall being connected to the lower surface of another blade.
2. The improved cooling fan structure that can change the flow direction and improve efficiency as described in claim 1, wherein the two adjacent fan blades form a blade assembly unit, and a guide arc wall is further connected to each side of the blade assembly unit.
3. The improved cooling fan structure that can change the flow direction and improve performance as described in claim 1, wherein the upper and lower surfaces of each blade are respectively connected to a different flow-guiding arc wall.
4. The improved cooling fan structure that can change the fluid flow direction and improve efficiency as described in claim 1, wherein the adjacent guide arc wall is respectively set at the same or different distances from the center of the drive shaft of the hub.
5. The improved cooling fan structure that can change the fluid flow direction and improve performance as described in claim 3, wherein the two adjacent fan blades have different blade shapes.
6. The improved cooling fan structure that can change the fluid flow direction and improve efficiency as described in claim 3, wherein the guide arc wall has a first wall arc end located on the upper surface of the fan blade and a second wall arc end located on the lower surface of the fan blade, the distance from the first wall arc end to the center of the drive shaft of the hub is less than the distance from the second wall arc end to the center of the drive shaft of the hub, so that the guide arc wall is arranged in an inward ring.
7. The improved cooling fan structure that can change the flow direction and improve efficiency as described in claim 3, wherein the guide arc wall has a first wall arc end located on the upper surface of the fan blade and a second wall arc end located on the lower surface of the fan blade, the distance from the first wall arc end to the center of the drive shaft of the hub is greater than the distance from the second wall arc end to the center of the drive shaft of the hub, so that the guide arc wall is arranged in an outward ring.
8. An improved structure for a cooling fan that can change the direction of fluid flow and improve efficiency, comprising: a hub, wherein a drive shaft is provided at the center of the hub; a fan blade assembly, including a plurality of fan blades arranged around the periphery of the hub; and a guide band ring assembly, including a plurality of guide band walls with thickness, the guide band walls being connected to the outer ring side of the end of the fan blades, and the plurality of guide band walls being integrally connected in a ring.