Extended length cutoff blower
US9546668B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 2013 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Jun 22, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/52
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blower assembly including a blower housing having a side wall with a first portion extending from the initial cutoff through an angle of at least 45° or more, the first portion having a radius which is substantially constant or which increases at a relatively small rate. The side wall additionally includes a second portion, extending from the end of the first portion to the outlet, which forms a continuous curve with the first portion and has an increasing radius which is increasing at a larger rate and has a rate of increase that is also increasing with housing angle. The shape of the side wall allows a reduction in the overall size of the blower housing for a given size of impeller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.