Alloys for a heat exchanger tube having an inner protective cladding and brazed disrupter

Inactive Publication Date: 2014-07-03
CONSTELLIUM NEUF BRISACH
View PDF5 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0024]The invention is aimed at optimizing the choice of materials or brazing sheets made from aluminum alloys designed for production of exchanger tubes with brazed turbulator to improve their resistance in a severe corrosive environment like that created by recirculat

Problems solved by technology

However, although such configurations can slightly improve the resistance of the tube to corrosion, they may be insufficient under particularly severe load conditions, which is the case fo

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alloys for a heat exchanger tube having an inner protective cladding and brazed disrupter
  • Alloys for a heat exchanger tube having an inner protective cladding and brazed disrupter
  • Alloys for a heat exchanger tube having an inner protective cladding and brazed disrupter

Examples

Experimental program
Comparison scheme
Effect test

Example

[0047]The invention consists of selecting the most appropriate aluminum alloys forming the brazing sheets used to make channels or tubes of a heat exchanger with a turbulator, more particularly adapted to exchanger tubes subjected to a severe corrosive environment particularly such as tubes through which exhaust gases from an automobile vehicle recirculate.

[0048]The turbulator placed inside the tube will be designed precisely to disturb internal fluid circulation and to increase heat exchange with the outside medium.

[0049]This turbulator typically consists of a sheet corrugated along its length similar to an exchanger fin or separator, at least within the scope of the invention, this embodiment being well known to those skilled in the art, as mentioned in the “State of the art” section.

[0050]Still for elements considered within the scope of the invention, both the tube and the disrupter are made by bending and assembly of brazing sheets, using usual methods known to those skilled in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Fractionaaaaaaaaaa
Fractionaaaaaaaaaa
Fractionaaaaaaaaaa
Login to view more

Abstract

The invention relates to an assembly of two brazing sheets the first one of which consists of a 3xxx alloy clad on one surface with a 1xxx alloy, the second one of which consists of an AA3xxx alloy clad on both surfaces thereof with a 4xxx alloy, which are assembled together by brazing so as to form a disrupted channel for the flow of exhaust gases, in particular for an engine vehicle.

Description

FIELD OF THE INVENTION[0001]The invention relates to the field of brazing sheets for heat exchanger tubes made from aluminum alloys, particularly those used for cooling or optimization of engine efficiency, and heating or air conditioning of the passenger compartment.[0002]This is particularly applicable to heat exchanger tubes subject to a severely corrosive environment such as charged air cooler tubes through which exhaust gas circulation takes place, and usually provided with a turbulator designed to improve heat exchange by increasing the exchange surface area and disturbing internal fluid circulation.STATE OF THE ART[0003]Aluminum alloys are used for the fabrication of most automobiles heat exchangers due to their low density which enables a weight saving, particularly compared with copper alloys, while giving good thermal conduction, ease of use and good resistance to corrosion.[0004]All aluminum alloys referred to in the following are designated using the designations defined...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F28F21/08
CPCF28D21/0003F02B29/045B32B15/016Y02T10/146F28F21/084F28F3/025F28D2020/0008F02M25/0734C22C21/00Y02T10/121F28D2021/0082F28F19/06F02M26/29Y02T10/12B32B15/01F28D1/04F28F13/12F28F21/08
Inventor PERRIN, ELODIEHENRY, SYLVAINGERBER, LIONEL
Owner CONSTELLIUM NEUF BRISACH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap