Heat exchanger

Abstract

Abstract PURPOSE:To increase the quantity of air flowing into the louvered area so as to fully make use of the heat dissipation function of the louver and improve the fin rigidity by forming saw-toothed projections in the flat area of a fin between the louvered area and the flat tube. CONSTITUTION:A heat exchange takes place between a fin 4 and air flowing on its surface. A louver 8 formed in the fin 4 improves the thermal conductivity with air, and enhances the heat exchanging efficiency with air by increasing the drafting resistance. Further, by forming forming saw-toothed projections in the flat area 9 between the louver 8 and a flat tube 3, the thermal conductivity of the flat area 9 is increased, improving the overall thermal conductivity of the fin 4. Not only the heat exchanging efficiency is improved, but also the flow resistance of cooling air flowing along the flat area 9 can be made larger and the saw-toothed projections 10 directs the cooling air to the louver 8. As a result, the quantity of air flowing in the louvered area 9 where the heat dissipation performance is high can be made larger so as to improve the heat exchanging efficiency. Further, the saw-toothed area 10 increases the mechanical strength of the flat area.

Inventors

• 👤 Shigenobu Fukumi
• 👤 重信 福見
• 👤 Ken Yamamoto
• 👤 憲 山本
• 👤 Shigeo Ito
• 👤 茂雄 伊藤

Bibliographic Details