The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1992
Filed:
Oct. 02, 1990
Applicant:
Inventor:
Michael Christ, Stuttgart, DE;
Assignee:
Behr GmbH & Co., Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
55 90 ; 55 80 ; 55222 ; 55227 ; 552572 ; 552577 ; 55258 ; 55259 ;
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.