Tube for a heat exchanger

A folded tube for a heat exchanger is disclosed. The tube includes first and second ends for connection to first and second headers of the heat exchanger. An outer wall of the tube provides at least two channels for carrying a heat exchange fluid between the first and second headers. At least one seam is formed in the outer wall extending the length of the tube, the seam including a pair of opposed flanges extending into the tube to form the two channels, the outer wall joined together along the seam. The tube further includes a first end region and a second end region, and an intermediate region. The tube flattened along its length to form at least two flattened lobes, each lobe including one of the channels, and the lobes in the intermediate region being flatter than the lobes in at least one of the end regions. 本发明涉及热交换器用管，其包括：第集管及第二集管，连接于热交换器的第集管及第二集管；外侧壁，包围提供至少两个通道的内部体积，通道用于在第集管及第二集管之间沿管的长度搬运热交换流体；至少个接缝部，沿着管的长度延伸，位于外侧壁上，接缝部包括对相向的凸缘，凸缘向内部体积的内部延伸，将内部体积划分为两个通道，外侧壁沿着接缝部的长度结合。管具有第端部区域、第二端部区域和中间区域，管以使凸缘将内部体积划分