Semiconductor converter

Abstract

Abstract PURPOSE:To restrain the rise in temperature of the central stages of piled cooling bodies and obtain a semiconductor converter of excellent cooling performance by making the projecting length of the heat-shielding plates in the central stages longer than that of those in both end stages. CONSTITUTION:Because the projecting length of heat-shielding plates 26 and 27, on the semiconductor-mounting side, is made longer than that of the others, air streams C and D passing through cooling bodies 15 and 16 include larger amounts of cold air, and also the effect of the rise in temperature resulting from the radiation by respective lower stages is avoided. Moreover, owing to a baffle plate 35, it is made difficult for the cold air flowing in from a ventilating hole 37 to flow through the cubicle central portion. By said constitution, the cooling temperature in each stage of the piled cooling bodies is uniformed, so that excellent cooling performance can be obtained.

Inventors

• 👤 Taichiro Yabuno
• 👤 Hajime Arai
• 👤 Shozo Takeda
• 👤 Shigeo Shinohara

Bibliographic Details