Impeller and housing assembly with reduced noise and improved airflow
US6579060B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2000 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Nov 2, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/4233
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An impeller and housing assembly with reduced noise and improved airflow includes a volute, a shaft, a housing, a central axis, and an inlet port located along the central axis. An outlet port is located on a second axis spaced from the central axis. An exhaust passage extends from the outlet port. The impeller is mounted on the shaft for rotation. The impeller includes a hub, and at least one blade extending from the hub. The blade has a distal surface spaced from the shaft. The impeller housing has a first plane which is approximately perpendicular to the central axis. The first plane contacts the blade distal surface. A second plane is parallel to and spaced apart from the first plane. The second plane contacts a wall of the outlet port at a location closest to the first plane. A spacing wall is positioned between the volute and the outlet port and spaces each blade from the outlet port, thus reducing noise and increasing airflow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.