公开(公告)号：US3833986A

公开(公告)日：1974-09-10

申请号：US36637273

申请日：1973-06-04

Applicant: SUNDSTRAND HEAT TRANSFER INC

Inventor： DE CICCO M

IPC: F28F9/26 ,  B21D53/08 ,  B23K1/00 ,  B23K1/20 ,  B21D53/00 ,  B21K29/00 ,  B23P15/26

CPC classification number: B23K1/0012 ,  B21D53/085 ,  B23K1/20 ,  B23K2201/14 ,  B23K2203/10 ,  Y10T29/49373 ,  Y10T29/4938

Abstract: A method of making fluid-tight telescopic joints in serpentine aluminum tubing for heat exchangers with a plurality of relatively long U-shaped aluminum tubing sections for supporting aluminum fins stacked in spaced relation thereon and a plurality of short U-shaped aluminum tubing sections each having opposite ends adapted to telescopically fit in the ends of the long sections of tubing to connect adjacent ends of the long sections, including the steps of providing an aperture in at least one of the long tubing sections for venting the tubing during soldering, assembling the short tubing sections with the ends thereof telescopically positioned in the ends of the long tubing sections and spaced therefrom to permit the flow of solder into the telescopic joints, dipping the assembly in the fluid solder to immerse the short tubing sections and the lower ends of the upper tubing sections to a depth just below the upper ends of the lower tubing sections to flow solder into the telescopic joints while venting the tubing through the aperture in the long tubing section, introducing ultrasonic vibrations into the solder while the assembly is dipped, and closing the aperture in the long tubing section by brazing.

Abstract translation: 一种制造用于热交换器的蛇形铝管中的流体密封伸缩接头的方法，其具有多个相对较长的U形铝管部分，用于支撑以间隔关系堆叠的铝翅片和多个短的U形铝管部分，每个短的U形铝管部分 相对的端部适于可伸缩地装配在管道的长部分的端部以连接长部分的相邻端部，包括在至少一个长管段中提供孔的步骤，用于在焊接期间排出管道，组装短路 管段，其端部可伸缩地定位在长管段的端部并与其间隔开，以允许焊料流入伸缩接头，将组件浸入流体焊料中以将短管段和上端的下端浸入 管道部分到达下部管道部分的上端正下方的深度，以将焊料流入伸缩臂 在通过长管道部分的孔口排出管道的同时，在组件浸入时将超声波振动引入焊料，并通过钎焊封闭长管段中的孔。