Water pipe and water chamber connecting structure of copper radiator

The invention provides a water pipe and water chamber connecting structure of a copper radiator. The water pipe and water chamber connecting structure comprises a water pipe and a water chamber. The water pipe is welded to the side face of the water chamber through brazing welding. A groove-shaped reinforcing groove is downwards formed in the upper face of the part, with the water pipe, of the water chamber, and the water pipe penetrates out of the side face of the reinforcing groove. Area contact is formed between the inner surface of the reinforcing groove and the two side faces and the upper surface of the water chamber, and the periphery of the reinforcing groove and the contact faces of the water chamber form a whole through welding. The inner surface of the reinforcing groove is plated with a tin layer, and then the inner surface of the reinforcing groove and the two side faces and the upper surface of the water chamber are welded into a whole through tin soldering. Due to the fact that area contact is