Blower assembly including exhaust restriction device
US6929448B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2003 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Jun 1, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D27/003
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blower assembly that includes an exhaust restrictor to aid in operating the blower assembly over a range of operating conditions. The blower assembly includes a blower housing having a housing exhaust opening that receives a flow of exhaust gases created by a rotating impeller. An exhaust transition section extends between the housing exhaust opening to an expanded diameter exhaust outlet sized to receive a flue pipe. The blower housing includes an exhaust restrictor positioned in the exhaust transition section between the housing exhaust opening and the exhaust outlet. The exhaust restrictor is integrally formed with a portion of the blower housing and includes a curved back wall to aid in the transition between the housing exhaust opening and the exhaust outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.