Exhaust-air purifying unit
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United States of America Patent
Stats
-
Apr 28, 1992
Grant Date -
N/A
app pub date -
Oct 2, 1990
filing date -
Oct 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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