Exhaust-air purifying unit
US5108469A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Oct 2, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/74
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust-air purifying unit includes a housing, a first fan which is disposed in the housing and which draws exhaust air through the housing, and a heat exchanger which is disposed in the housing and which cools the exhaust air via heat transfer with a stream of cooling air which is drawn through the heat exchanger without contacting the exhaust air. A mechanical filter is disposed in the housing downstream of the heat exchanger, and a washing device is disposed in the housing upstream of the heat exchanger. The washing device sprays a washing liquid into the exhaust air as it enters the heat exchanger to remove harmful substances from the exhaust air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.