Flat tubes for heat exchanger

US6546999B1 · kind B1 · utility

Assignee

• Visteon Global Technologies, Inc. · US

Inventors

• Bernd Dienhart · Recklinghausen, DE
• Hans-Joachim Krauss · Stuttgart, DE
• Hagen Mittelstrass · Nagold, DE
• Karl-Heinz Staffa · Stuttgart, DE
• Christoph Walter · Stuttgart, DE
• Jochen Schumm · Eberdingen, DE

Key dates

• Filing date: Mar 10, 2000
• Grant date: Apr 15, 2003
• Expiry date: Mar 10, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28D2021/0085
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A flat tube for use in a heat exchanger includes a reversal bend section connected between parallel extending tube sections. The reversal bend section extends from a plane of the tube sections by a distance less than a width of the tube sections. The tube sections can be straight or serpentine. A plurality of the flat tubes can be stacked and connected to collector tubes to form a heat exchanger for use as an evaporator in a vehicle air conditioning system. Corrugated ribs are positioned between adjacent flat tubes for increased heat conduction.