Flat tube for aluminium heat exchanger
A heat exchanger and flat tube technology, applied in the field of aluminum flat tubes, can solve problems such as corrosion of contact parts, and achieve the effect of high reliability
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[0032] Embodiments of the present invention are described as follows with reference to the accompanying drawings:
[0033] figure 1 A cross-sectional view of a flat tube according to a first embodiment of the invention is shown, given the state before welding. figure 2 A cross-sectional view of the main part of the flat tube is shown, giving the state after welding.
[0034] The first embodiment presents a flat tube formed by bending in its width direction an aluminum strip material made of brazing filler metal 3 coated with an aluminum alloy on its outer surface and It consists of an aluminum core material 1 coated with a sacrificial anode material 2 made of aluminum alloy on its inner surface.
[0035]The strip-shaped material is bent in the width direction so that the first flat surface 4 and the second flat surface 5 face each other in parallel, while the first flat surface 4 and the second flat surface are connected in the width direction by a pair of bent portions 6 ...
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