Multiblade radial fan and method for making same
US5741118A · kind A · utility
37Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1995 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Dec 27, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/283
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Noise is minimized in the design of multiblade radial fans, wherein the specifications of the impeller of a multiblade radial fan are determined so as to satisfy the correlation expressed by the formula .nu..gtoreq.-0.857Z.sub.1 +1.009 (in the preceding formula, .nu.=r.sub.0 /r.sub.1, Z.sub.1 =(r.sub.1 -r.sub.0)/r.sub.1 -nt/(2.pi.), where r.sub.0 is the inside radius of the impeller, r.sub.1 is the outside radius of the impeller, n is the number of radially-directed blades, and t is the thickness of the radially-directed blades).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.