Engine cooling fan having improved airflow characteristics
US6827547B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2003 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/544
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A stator and diffuser assembly is introduced between an engine cooling fan and engine. The stator acts increase the static efficiency per unit airflow of the axial fan by reducing the rotational component of air traveling through the fan and by directing the airflow in an axial direction towards the engine. The diffuser acts to increase the static efficiency per unit airflow of the axial fan used by decelerating the airflow, thereby providing more airflow to the engine at a given fan rotational speed. The stator and diffuser assembly thus decreases the amount of horsepower necessary to drive the fan at a given rotational speed and reduces noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.