Heat exchanger and method of producing the same
US6263570A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1997 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Mar 27, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49393
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat exchanger for vehicles comprises firstly a heat-exchanger assembly consisting of flat liquid-conveying tubes and surface-enlarging means, secondly an inlet tank, and thirdly an outlet tank. The inlet tank and the outlet tank have a connection plate with a number of connection holes for the tubes. At each hole, the plate has a projecting connecting sleeve element. Each tube has at its ends a widened main portion which is accommodated on said connecting sleeve element. A rounded transitional area is formed between the connection plate and each connecting sleeve element, and the main portion is inserted in the conecting sleeve element and is applied with its outside against the inside of the connecting sleeve element. Each tube has at its ends an end portion which is widened in relation to the main portion, merges with the main portion and is applied against the transitional area. In a method of producing such a heat exchanger, the widened end area of the tubes are inserted in the connecting sleeve elements and are widened further in such a manner that each tube end is applied against the transitional area between the plate and the respective connecting sleeve element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.