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:
Oct. 01, 2002
Filed:
May. 17, 2001
Applicant:
Inventors:
Karine Brand, Bryan, TX (US);
Andreas Beutler, Weissenhorn, DE;
Manfred Knab, Dornstadt, DE;
Gerhard Schuez, Voehringen, DE;
Andreas Schwitalla, Illerrieden, DE;
Assignee:
Wieland-Werke AG, Ulm, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F 1/318 ;
U.S. Cl.
CPC ...
F28F 1/318 ;
Abstract
The invention relates to a heat-transfer tube, in particular an evaporator tube, with fins circumferentially extending on the shellside, which fins are shaped to essentially closed-off channels. The channels are open to the outside through pores with at least two variable sizes. In order to improve the evaporation characteristics, the invention provides advantageous regions for the ratio of the pore sizes and the ratio of the number of pores.