PURPOSE: To enhance the heat conduction efficiency and to reduce the wind pressure loss by providing a fin base plate parallel to the air flow direction between neighboring inclined members so that an inclined member and a fin base plate are alternatingly arranged relative to the air flow direction.
CONSTITUTION: A fin base plate 10 has multiple heat conductive pipe insertion holes 10a. An inclined member 11 located between heat conductive pipe insertion holes 10a in the fin base plate 10 is formed in such a manner that a number of incisions are made in the direction of the length of the fin base plate 10 and such are raised up and down relative to the fin base plate 10 so that its cross section may take a form of a louver having an angle relative to the air flow into the heat exchanger. When stacked under such a condition that a planar strip-like fin base plate 12 is disposed parallel to the air flow between neighboring inclined members 11, the inclined member 11 forms a waved flow passage in cooperation with an inclined member 11 of the other stacked fin base plate 10. As the air flow passing such a flow passage changes the direction, the overall boundary layer becomes thin due to the effect of repeated approach sections, and as a result the heat conduction efficiency is enhanced.
YAMAZAKI KISUKE
MARUYAMA KAZUHIRO
AKIYAMA YUUICHI
SAKUMA KIYOSHI
OKADA TETSUJI
| JPS57114281U | 1982-07-15 | |||
| JPS56144988U | 1981-10-31 | |||
| JPS55105194A | 1980-08-12 | |||
| JPS57183482U | 1982-11-20 |