Hydro-thermal dual injected vacuum system
US6449799B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 24, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Apr 24, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4088
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum system is described in which a hollow vacuum housing is provided with an intake plenum leading from an open bottom housing end of the housing to a vacuum line connector. A vacuum pump is attached to the vacuum line to produce suction through the intake plenum. A hot air housing is situated within the hollow vacuum housing and includes a hot air discharge plenum. The hot air discharge plenum is defined by a wall within the intake plenum, leading from an open bottom end that is substantially circumscribed by the intake plenum. A hot air blower on the hot air housing moves hot air downwardly. The hot air moves against the surface being cleaned or dried and is subsequently drawn back upwardly through the intake plenum. At least one and preferably two compressed injection air discharge lines are positioned within the hot air housing. Each line includes compressed injection air discharge openings oriented to direct air downwardly and angularly toward the intake plenum, carrying the hot air in the same direction. A fluid discharge line is positioned within the intake plenum adjacent the bottom end and includes fluid discharge openings oriented to direct pumped fluid downwardly an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.