Blowing apparatus, suction panel therefor and straightening guide therefor
US5620370A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1994 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Jun 30, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/663
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blowing apparatus includes a suction passage having a suction chamber enclosed by rigid body surfaces, suction ports opening toward the suction chamber for sucking air from outside, and a fan suction port serving as a suction port for a blower, the suction ports, the suction chamber, and the fan suction port being arranged in nonlinear form. In such blowing apparatus, a doughnut-like straightening guide is arranged on an opening edge on the suction chamber side of the fan suction port. The straightening guide has a projection toward the suction chamber, an appropriate thickness in the radial direction, and a guide passage matching the fan suction port in the middle thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.