Heat exchanger with cut tubes

US6739386B2 · kind B2 · utility

Assignee

• Modine Manufacturing Company · US

Inventors

• Bernhard Lamich · Eßlingen, DE
• Viktor Brost · Neckartenzlingen, DE

Key dates

• Filing date: Jan 23, 2002
• Grant date: May 25, 2004
• Expiry date: May 15, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49373
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A heat exchanger including a core having a plurality of flat tubes with fins between adjacent tubes, the tubes each having flat side walls connected by front and rear walls defining a flow path, all of the walls extending longitudinally between opposite tube ends with the tube side walls defining a first height. First tube end portions in the tube ends of a plurality of the plurality of flat tubes include flat side walls flared apart to define a second height greater than the first height. Second tube end portions in the tube ends of the plurality of the plurality of flat tubes include a longitudinally extending cut through the front and rear walls with the flat side walls flared apart to define a third height greater than the second height. The side walls of adjacent tubes are secured together at the tube ends, and headers connect to the tube front and rear walls at the first and second tube end portions whereby the headers communicate with the tube flow paths.