Patent ID: 11927404
Assignee: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO., LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 12:
13. A processing method for a heat exchange tube, comprising:
preparing a plate-shaped piece; and
bending a left end section of the plate-shaped piece multiple times to form a left through groove section having a plurality of through grooves, with openings of two adjacent through grooves of the left through groove section facing in opposite directions, and bending a right end section of the plate-shaped piece multiple times to form a right through groove section having a plurality of through grooves, with openings of two adjacent through grooves of the right through groove section facing in opposite directions, such that a middle plate-shaped section is disposed between the left through groove section and the right through groove section, a left plate section is disposed on a left side of the left through groove section, and a right plate section is disposed on a right side of the right through groove section;
folding the left plate section toward the middle plate-shaped section, such that the left through groove section overlaps the left plate section, and a part of the left plate section blocks two or more through groove openings of the left through groove section, and folding the right plate section toward the middle plate-shaped section, such that the right through groove section overlaps the right plate section, and a part of the right plate section blocks two or more through groove openings of the right through groove section;
refolding the left through groove section and the left plate section that overlap with each other toward the middle plate section, such that the left through groove section overlaps the middle plate section, a part of the middle plate section blocks remaining through groove openings of the left through groove section, and a part of the left plate section that does not overlap the left through groove section forms a left extension portion; and
refolding the right through groove section and the right plate section that overlap with each other toward the middle plate section, such that the right through groove section overlaps the middle plate section, a part of the middle plate section blocks remaining through groove openings of the right through groove section, and a part of the right plate section that does not overlap the right through groove section forms a right extension portion, wherein, after the folding, a right end of the left through groove section is adjacent to a left end of the right through groove section.