Heat exchanger and method for processing heat exchanger

A heat exchanger processing method comprising:

• preparing a heat exchanger to be processed, wherein the heat exchanger to be processed comprises a first header, a second header, and a plurality of heat exchange tubes, the plurality of the heat exchange tubes are spaced apart along a length direction of the first header, the heat exchange tube communicates the first header with the second header, the heat exchange tube comprises a first face and a second face arranged in parallel in the length direction of the first header, the heat exchange tube comprises a first section, a section to be bent and a second section, a first end of the first section is connected to a first end of the section to be bent, a second end of the first section is in communication with the first header, a first end of the second section is connected to a second end of the section to be bent, and a second end of the second section is in communication with the second header;
• translating a part of the section to be bent of the heat exchange tube by a preset distance relative to the first section and the second section of the heat exchange tube along the length direction of the first header, so that the translated part of the section to be bent deviates from the first section of the heat exchange tube in the length direction of the first header;
• moving the first header towards the second header, and moving the second header towards the first header;
• and
• bending the section to be bent of the heat exchange tube in the length direction while reducing an included angle between the first section and the second section of the heat exchange tube to a predetermined angle, after translating the part of the section to be bent by the preset distance,
• wherein a mandrel is placed on the section to be bent and abuts against the part of the section to be bent, when the section to be bent of the heat exchange tube is bent.

A method for processing a heat exchanger, comprising:

• translating a section of a heat exchange tube by a preset distance relative to a first end and a second end of the heat exchange tube along a thickness direction of the heat exchange tube, so that the translated section of the heat exchange tube protrudes from the first end and the second end of the heat exchange tube in the thickness direction of the heat exchange tube;
• arranging and spacing apart a plurality of the heat exchange tubes along the thickness direction of the heat exchange tube, wherein directions, in which the sections of the plurality of the heat exchange tubes protrude from their first ends and their second ends in the thickness direction of the heat exchange tube, are identical;
• fixedly connecting first ends of the plurality of the heat exchange tubes with a first header and fixedly connecting second ends of the plurality of the heat exchange tubes with a second header, wherein the protruding sections of the plurality of the heat exchange tubes are aligned in a length direction of the first header;
• and
• bending the section to be bent of the heat exchange tube in the length direction while reducing an included angle between the first section and the second section of the heat exchange tube to a predetermined angle,
• wherein:
• the heat exchange tube comprises a first face and a second face arranged in parallel in the length direction of the first header;
• and
• before bending the section to be bent, the protruding section is twisted relative to the first section and second section of the heat exchange tube along the length direction of the first header, so that an included angle between a first face of the protruding section and a first face of the first section is greater than 0 degrees and less than or equal to 90 degrees.