Draft inducer blower
US7278823B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2004 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Dec 16, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/626
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A draft inducer blower for high efficiency furnaces, including a blower housing which facilitates maximum air flow efficiency through the blower housing while having an overall radial dimension which conforms to the industry standard arrangement of mounting holes on the walls of the furnaces. The blower housing generally includes a housing body and housing cover, the housing body including a plurality of mounting lugs spaced around the housing body through which bolts may be inserted to secure the blower housing to the mounting holes in the wall of a furnace. The housing cover and housing body each define portions of a volute which extends around the outer periphery of the blower housing from the cutoff region to the exhaust transition of the blower housing. The volute includes a cross-sectional area which substantially continuously increases in the axial direction of the blower housing from the cutoff region to the exhaust transition. In this manner, the blower housing has a radial dimension which conforms to the industry standard mounting hole arrangements for furnaces, yet includes a volute having an increasing cross-sectional area around the blower housing to provide a diffuser…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.