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:
May. 12, 1992
Filed:
Jul. 01, 1991
Prasad S Kadle, Getzville, NY (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An evaporator for an automotive air conditioner having a plurality of U-flow tubes therein arranged side by side so that spaces are provided for air centers secured between the sidewalls of the tubes. Each tube is formed from a pair of identical plates that have a centralized divider rib that separates the tubes into separate side flow passages joined by a lower interconnecting crossover passage. The tubes have a plurality of flow ribs indented and joined in a predetermined pattern therein to form discrete fluid flow sections within each tube. The ribs are interconnected in such a manner that the sections effectively direct and tailor the flow of the heat exchanger fluid to a lower and intermediate section of the tube at the turning of the flow from one section to another to reduce, or substantially eliminate, dry out areas in each tube, thereby increasing heat exchanger tube and evaporator efficiency.