Aluminum heat exchanger

Abstract

Abstract PURPOSE:To reduce the weight of a heat exchanger, i.e., to reduce the thickness of the material constituting the heat exchanger, by using Al-Mn-Mg-Cu alloy having a high strength as the material for the tubes of a heat exchanger, and using Al-Mn alloy having a higher hardness than pure aluminum and not causing scattering at the time of vacuum soldering as the cladding material for the heat exchanger tubes on the side of cooling water. CONSTITUTION:A heat exchanger of this invention is manufactured by constituting the core by attaching corrugated fins 4 and side plates 7 to heat exchanger tubes 1, fixing core plates 3 to the opposite sides of the tubes 1, and finally attaching an upper and a lower tanks 2, 9 to the core plates 3. Here, an aluminum alloy containing 0.2-1.5% of Mn, 0.2-1.0% of Cu, 0.2-1.0% of Mg, 0.6% or less Si, 0.7% or less Fe and inevitable impurities is used as the material for the core 1b of the tubes 1, and the tube 1 is constituted by cladding a pseudo anode material 1a made of an aluminum alloy containing 0.2-1.5% of Mn, 0.6% or less Si, 0.7% or less Fe and inevitable impurities over the inner surface of the core 1b and cladding a soldering material over the outer surface of the core 1b.

Inventors

• 👤 Kenji Nekura
• 👤 根倉　健二
• 👤 Mitsuo Hashiura
• 👤 橋浦　光夫

Bibliographic Details