Heat exchanger and processing method therefor

A heat exchanger, comprising:

• a first tube and a second tube spaced apart from each other;
• a plurality of heat exchange tubes spaced apart from each other, wherein the plurality of heat exchange tubes are arranged in parallel along a length direction of the first tube, each heat exchange tube is respectively connected with the first tube and the second tube to communicate the first tube with the second tube, and, for at least one of the plurality of heat exchange tubes, a peripheral profile of a cross section of the at least one of the plurality of heat exchange tubes is generally flat, the at least one of the plurality of heat exchange tubes comprises a first side surface and a second side surface arranged in parallel in a thickness direction of the at least one of the plurality of heat exchange tubes, the at least one of the plurality of heat exchange tubes further comprises a third side surface and a fourth side surface arranged in parallel in a width direction of the at least one of the plurality of heat exchange tubes, a maximum distance between the first side surface and the second side surface of the at least one of the plurality of heat exchange tubes is smaller than a maximum distance between the third side surface and the fourth side surface of the- at least one of the plurality of heat exchange tubes, the peripheral profile of the cross section of the at least one of the plurality of heat exchange tubes comprises projections of the first side surface, of the second side surface, of the third side surface and of the fourth side surface in the cross section of the at least one of the plurality of heat exchange tubes;
• the first side surface of the at least one of the plurality of heat exchange tubes intersects with the third side surface of the at least one of the plurality of heat exchange tubes at a first edge, the second side surface of the at least one of the plurality of heat exchange tubes intersects with the fourth side surface of the at least one of the plurality of heat exchange tubes at a second edge, the second side surface of the at least one of the plurality of heat exchange tubes intersects with the third side surface of the at least one of the plurality of heat exchange tubes at a third edge, the first side surface of the at least one of the plurality of heat exchange tubes intersects with the fourth side surface of the at least one of the plurality of heat exchange tubes at a fourth edge, the at least one of the plurality of heat exchange tubes comprises a first section, a second section and a bent section;
• one end of the bent section of the at least one of the plurality of heat exchange tubes is connected with one end of the first section of the at least one of the plurality of heat exchange tubes, an other end of the bent section of the at least one of the plurality of heat exchange tubes is connected with one end of the second section of the at least one of the plurality of heat exchange tubes, the another end of the first section of the at least one of the plurality of heat exchange tubes is connected with the first tube, another end of the second section of the at least one of the plurality of heat exchange tubes is connected with the second tube, and the at least one of the plurality of heat exchange tubes communicates the first tube with the second tube,
• in a first plane parallel to the first edge and the third edge located in the first section, one end of a projection line of the second edge located in the bent section is connected with a projection line of the second edge located in the first section, a distance between another end of the projection line of the second edge located in the bent section and a projection line of the first edge located in the first section is denoted as L, and L of the at least one of the plurality of heat exchange tubes satisfies a formula:
• 1.1×Tw≤L≤3×Tw, wherein Tw is a width of the at least one of the plurality of heat exchange tubes;
• a minimum included angle between a projection line of the first edge located in the bent section in the first plane and the projection line of the first edge located in the first section in the first plane is denoted as β, the angle β is greater than 0 degrees, and the included angles β of the plurality of heat exchange tubes are the same, and satisfy a formula:
• L2+Tw·cos β≤L1<L2+2Tw;
• one end of a projection line of the first edge located in the bent section in the first plane is connected to the projection line of the first edge located in the first section in the first plane, and a connecting line between another end of the projection line of the first edge located in the bent section in the first plane and another end of the projection line of the second edge located in the bent section in the first plane and the projection line of the first edge located in the first section in the first plane define an included angle denoted as α therebetween, and the included angle α is greater than 10 degrees and less than 60 degrees;
• and
• the bent section forms a slope.