Fan housing
US5452987A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1993 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Oct 29, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The fan housing for a multistage fan has a first housing part for receiving the electric motor, a second housing part mounted coaxially on the first housing part, and a housing cover mounted on the opposing side of the second housing part. So that fan noise is minimize during fan operation, for improved protection from external effects and to avoid tension originating from thermal expansion in the blower housing the housing cover for the second housing part has a peripheral cover edge portion and is pot-shaped or cap-shaped; the housing cover completely overlaps the second housing part; an overlapping peripheral portion of this housing cover has a radial spacing from the second housing part so as to form an air cushion between the second housing part and the housing cover and the cover edge portion of the housing cover is supported on the first housing part so as to enclose the second housing part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.