Heat exchanger, and method for processing heat exchanger

A method for processing a heat exchanger, comprising:

• preparing a plurality of heat exchange tube semi-finished products, each of the plurality of heat exchange tube semi-finished products comprising a first wall and a second wall arranged in a thickness direction of the each of the plurality of heat exchange tube semi-finished products, the each of the plurality of heat exchange tube semi-finished products having a first gap, wherein the first gap is configured to be filled with a solder to form a first seam, and the first gap is arranged on a surface of the second wall outside of the each of the plurality of heat exchange tube semi-finished products and penetrates into the second wall along in the thickness direction;
• arranging N heat exchange tube semi-finished products spaced apart in a first direction, wherein the N>4, the thickness direction of the plurality of heat exchange tube semi-finished products is parallel or angled to the first direction, and in the first direction, the plurality of heat exchange tube semi-finished products are sequentially defined as a first tube, a second tube, . . . , a N−1th tube, and a Nth tube;
• placing the second wall of the first tube towards the second tube, and the second wall of the first tube being closer to the second tube in the first direction compared to the first wall of the first tube, so that, in the first direction, a distance between the second wall of the first tube and the first wall of the second tube is less than a distance between the first wall of the first tube and the first wall of the second tube;
• and
• placing the second wall of the Nth tube towards the N−1th tube, and the second wall of the Nth tube being closer to the N−1th tube in the first direction compared to the first wall of the Nth tube, so that, in the first direction, a distance between the second wall of the Nth tube and the first wall of the N−1th tube is less than a distance between the first wall of the Nth tube and the first wall of the N−1th tube.