High efficiency furnace/air handler blower housing with a side wall having an exponentially increasing expansion angle
US8550066B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 2009 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Aug 7, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H9/0073
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air distribution blower housing for an air handler such as a residential furnace is designed with a volute-shaped outer wall that has an exponentially increasing expansion angle in the direction of air flow through the blower housing for at least a portion of the volute-shaped outer wall length. This results in the blower housing having an enlarged air outlet opening that slows down and spreads out the air flow from the blower housing over a greater area of the furnace heat exchanger. The blower housing thereby enables less air pressure drop through the heat exchanger, which increases the efficiency of the blower motor operation. The design of the blower housing also efficiently turns the velocity head of the air flow through the housing to usable static air pressure at the housing air outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.