Cross flow type cooling fan device
US4859888A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 1987 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | May 13, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cross flow type cooling fan device installed in the internal part of electric appliances which need cooling such as audio-amplifiers, microcomputers, word processors, copying machine, etc. The cross flow type cooling fan device is characterized in that an impeller (107) with air blowing slits formed around a hollow area in the center of a cylindrical body is rotatably supported by supporting frames (109, 110) at the ends thereof through supporting shafts (111, 112), a field magnet (121) is mounted either on a rotary side formed by the impeller (107) or the supporting shafts (111, 112) or on a stationary side formed by the supporting frames (109, 110), and an armature winding (124) is mounted confronting the aforesaid magnet for the motor, so that a rotary driving section of the impeller is constructed resulting in a cooling fan device of considerably reduced size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.