Heat exchanger

US5329997A · kind A · utility

Assignee

• Behr GmbH & Co. · DE

Inventors

• Juergen Bayer · Eßlingen, DE
• Dieter Engelhardt · Stuttgart, DE
• Prasanta Halder · Ditzingen, DE

Key dates

• Filing date: Apr 16, 1993
• Grant date: Jul 19, 1994
• Expiry date: Apr 16, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S165/905
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A heat exchanger (1) with at least one heat-exchange tube (11) which is held at the end in an end piece (3) such that the joint is liquid- and gas-tight. The end piece (3) has an opening for each tube to which it is connected, allowing the heat-exchange fluid to pass through from the tube (11) into a conduit box and in the opposite direction, a sleeve-like connection socket (8) being located in the region of each opening. The connection socket (8) comprises a cylindrical slot (9) coaxial to the opening and open at the heat-exchange tube end, forming an inner (14) and outer (15) annular wall. The end of the heat-exchange tube (11) is pushed into the slot. A section of the outer annular wall (15) adjacent to the heat-exchange block is longer than the corresponding section of the inner annular wall (14).