摘要:
A plurality of tubes (3) for flowing a heat transfer tedium, a plurality of fins (4), and tanks (1) connected to the tubes (3) is provisionally assembled. Each of the tubes (3) comprises a pair of formed plates (3a, 3b) coupled to each other. Each of the formed plates (3a, 3b) has a peripheral portion (20) and a plurality of protrusions (14) formed on an inside thereof and having through-holes in top ends thereof. The outer surface of the provisional assembly is coated with a noncorrosive flux (40) in an amount rate of 3 g/m.sup.2 or more on the base of the total area of the outer surfaces and inner surfaces of the tanks, fins and tubes. Then, the provisional assembly is subjected to a brazing treatment. The noncorrosive flux (40) is melted and flows to penetrate into the inside of the tubes (3) through the through-holes (45, 18a) to bond the paired formed plates to each other.
摘要翻译:临时组装多个用于流动传热固体的管(3),多个翅片(4)和连接到管(3)的罐(1)。 每个管(3)包括彼此连接的一对成形板(3a,3b)。 每个成形板(3a,3b)具有周边部(20)和形成在其内侧的多个突起(14),并且在其顶端具有通孔。 在临时组件的外表面上以不锈钢焊剂(40)的形式,以罐体,翅片和管的外表面和内表面的总面积为基础涂覆3g / m 2以上的量。 然后,对临时组件进行钎焊处理。 非腐蚀性通量(40)熔化并通过通孔(45,18a)流入管(3)的内部,以将成对的成形板彼此粘合。