Impeller for a fan and a method for making same
US6077043A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1996 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Dec 19, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/386
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An impeller for a fan, with improved performance characteristics, has a central hub with a plurality of wings extending radially outwardly therefrom. The impeller also has a plurality of blades, such that each blade is attached in an extending manner from a corresponding one of the wings. When in combination with a fan having a motor, the motor imparts rotation to the impeller in a forward direction. Each blade is angled backwardly, at a selected angle, relative to its corresponding wing and the forward, rotational direction of the impeller. In an alternate embodiment, each wing of the hub has a first portion extending radially outward from the hub and a second, outer portion angled backwardly relative to the first portion of the wing and the forward direction of the impeller. A method of manufacture is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.