Dynamic condensate evacuator for high efficiency gas furnaces
US5620302A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Aug 31, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This invention features a condensate drain that drains condensate from an impeller housing as well as an impeller housing having such a drain. This condensate drain is configured so as to allow the condensate from the exhaust to be continuously drained from the housing while the impeller is or is not operating. Preferably, the impeller housing includes a housing shell having an aperture in fluid communication with the housing interior. A top portion of the aperture extends above an interior surface of the housing shell to minimize the venturi effect of air flowing by the aperture responsive to rotation of the impeller. The interior surface of the housing further includes a dished region proximate the aperture, where the bottom of the dished region is arranged to correspond with a bottom edge of the aperture. The cross-sectional area of the aperture portion below the housing shell interior surface has a cross-sectional area that is in the range of from about 10% to about 50% the cross-sectional area of the aperture and more preferably is about 50% of the aperture cross-sectional area. The impeller also includes a hollow member, where the hollow member and housing are formed as an in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.