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:
Mar. 25, 2003
Filed:
Mar. 19, 2001
Applicant:
Inventors:
Oliver Freitag, Kirchheim, DE;
Alois Tischler, Aidenbach, DE;
Assignee:
Ballard Power Systems AG, Kirchheim/Teck-Nabern, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28D 7/16 ; F28F 3/00 ;
U.S. Cl.
CPC ...
F28D 7/16 ; F28F 3/00 ;
Abstract
An evaporator stack, in particular for a double evaporator, includes foils for converting a liquid medium into a gaseous medium. The foil stack has at least one foil through which a medium flows and at least one additional foil. The foil stack has an inlet region for the liquid medium and a discharge region for the gaseous medium. The discharge region is designed such that a pressure gradient in the medium over the at least approximately entire width of the discharge region is smaller than a pressure gradient in the medium over the at least approximately entire length of the media foil through which flow occurs.