Patent ID: 11971224
Assignee: ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO., LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 7:
8. The plate-fin heat exchanger according to claim 5, wherein the protrusions, the third corner hole portion and the fourth corner hole portion of the first plate are in contact with and fixed to the second plate surface of the adjacent second plate by welding,
a protruding structure corresponding to the second recess of the second plate is in contact with and fixed to the first plate surface of the adjacent first plate by welding,
a protruding structure corresponding to the first recess of the second plate is in contact with and fixed to the first recess of the adjacent first plate by welding,
the first recess of the first plate is deeper than the second recess of the first plate, and the first recess of the second plate is deeper than the second recess of the second plate.