Heat conducting pipe

Abstract

Abstract PURPOSE:To improve the condensation efficiency and evaporation efficiency by forming fins in spiral while keeping the formation rate of (sectional height of fin/pitch of fin) >=1/2, and cutting out the fins and providing a number of fine convexes and concaves on the inner surface of the pipe. CONSTITUTION:The fins are provided spirally on the inner surface of the heat conductor pipe 1. In this instance, (sectional height of fin/pitch of fin) >=1/2 is maintained. In order to obtain a high speed flowdown of a condensate, a plurality of imaginary spiral lines which run in parallel to the pipe axis or in the reverse direction at an angle less than 10 deg. are crossed, so that the resultant intersecting point forms a cutout 4. In addition, for improving the evaporation efficiency, the inner surface of the pipe 1 is provided with a fine convex-concavo pattern.

Inventors

• 👤 Takayoshi Asaumi
• 👤 浅海　隆義
• 👤 Kazusuke Sanada
• 👤 真田　和扶
• 👤 Tomiharu Matsushita
• 👤 富春 松下
• 👤 Tatsuo Yamazaki
• 👤 山崎　龍雄
• 👤 Akio Isozaki
• 👤 磯崎　昭夫

Bibliographic Details