Cleaning system for a washer
US6257254A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1997 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Nov 14, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K1/031
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A high pressure pump (14) supplies cleaning fluid from a reservoir (12) to spray nozzles (20) inside a washing chamber (10). The spray nozzles (20) spray the cleaning fluid over a load to be cleaned. Used cleaning fluid is collected in a sump (30). A sump pump (32) drains the sump. The combination of the high pressure pump and sump pump provides more efficient cleaning of the load and eliminates the requirement for a deep sump beneath the washer. A vertical traveler (22), having a pair of counterbalanced spray arms (24), raises and lowers the spray nozzles counter cyclically; a detergent injection system (50) accurately meters a correct amount of detergent is added to the cleaning fluid; and a filtration device (34) filters suspended material from the used cleaning fluid and uses a portion of the cleaning fluid to clean itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.