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 15:
16. A processing method for a heat exchange tube, comprising:
preparing a plate-shaped piece; and
folding a first plate section of the plate-shaped piece into a tube body having a cavity enclosed by two opposite bottom walls and two opposite side walls, wherein a second plate section of the plate-shaped piece forms an extension portion on at least one side of the tube body, and the extension portion joins one bottom wall of the tube body,
wherein when the first plate section of the plate-shaped piece is folded into the tube body, a part of the first plate section is bent to form an inner baffle separating the cavity into a plurality of flow channels,
wherein a partial plate section on a left side of the plate-shaped piece is bent multiple times to form a left through groove section with a plurality of through grooves, the through groove of the left through groove section has an opening on one side in a thickness direction of the tube body, openings of two adjacent through grooves of the left through groove section face in opposite directions, and a left plate-shaped section of a specified length is disposed on a left side of the left through groove section;
wherein a partial plate section on a right side of the plate-shaped piece is bent multiple times to form a right through groove section with a plurality of through grooves, the through groove of the right through groove section has an opening on one side in the thickness direction of the tube body, openings of two adjacent through grooves of the right through groove section face in opposite directions, and a right plate-shaped section of a specified length is disposed on a right side of the right through groove section,
wherein a middle plate-shaped section of a preset length is disposed between the left through groove section and the right through groove section,
wherein the left plate-shaped section and the right plate-shaped section are folded toward each other, such that a part of the left plate-shaped section covers the through grooves of the left through groove section and overlaps the middle plate-shaped section, and a part of the right plate-shaped section covers the through grooves of the right through groove section and overlaps the middle plate-shaped section,
wherein a left part of the middle plate-shaped section is bent downward, such that the left plate-shaped section and the left through groove section that overlap with each other are bent together downward, and after the bending, a part of the left plate-shaped section is located above the middle plate-shaped section, and a right part of the middle plate-shaped section is bent downward, such that the right plate-shaped section and the right through groove section that overlap with each other are bent together downward, and after the bending, a part of the right plate-shaped section is located above the middle plate-shaped section, and
wherein the left plate-shaped section and the left through groove section that overlap with each other are then bent inward to overlap a left part of an unbent middle plate-shaped section, the right plate-shaped section and the right through groove section that overlap with each other are then bent inward to overlap a right part of the unbent middle plate-shaped section, and after the bending, a right end of the left through groove section is adjacent to a left end of the right through groove section.