Heating efficiency and noise reduction enclosure
US5105798A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1991 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Aug 6, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23L17/005
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The present improvement is forced air furnaces comprises structure having redisposition of the vestibule panel of a forced air furnace from a location between the flue collector box and the circulating air flow to a location between the inducer motor and the induced draft fan housing. Advantages over prior art structures obtained by such forced air furnace structure having the novel disposition and location of the vestibule panel of the present invention is that the induced draft housing and the flue collector box are then located within the heated and enclosed circulating air flow chamber. One primary advantage of this structure is a significant decrease in noise emitted by the induced draft fan housing, and thus reduction of noise from the forced air furnace as a whole. Moreover, loss of heat from the induced draft housing and the flue collector box are prevented, while more beneficially disposing the inducer motor within the cooler environment of the vestibule area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.