Multi-chamber flat pipe for use in heat exchanger utilized as e.g. exhaust gas cooler in internal-combustion engine of motor vehicle, has metal strip whose edge section and/or inner section lies against contact area of one of broad walls

摘要

The pipe (10) has two chambers (1, 2) for flow admission of a fluid, where the pipe is manufactured by bending and/or folding and/or seaming method with which a closed profile is formed. The profile has two broad walls (3, 4) connected to each other by narrow walls (5, 6). The broad walls are connected with a bar (7) to form an inner side of the profile and to separate the chambers, where the bar has two forming sections (11.1, 11.2) made of metal strip of the broad wall. An edge section of the strip and/or an inner section of the strip lies against a contact area of one of the broad walls. An independent claim is also included for a heat exchanger comprising a block.