Patent ID: 11971223
Assignee: XI'AN JIAOTONG UNIVERSITY
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 3:
4. The modular square-circular composite channel printed circuit heat exchanger according to claim 3, wherein the plurality of square fin channels comprise straight square fin channels and bent square fin channels bent downwards at two ends of the heat exchanger core section, the plurality of circular mini-channels comprise straight circular mini-channels and bent circular mini-channels bent downwards at two ends of the heat exchanger core section, the straight square fin channels and the straight circular mini-channels are alternately arranged up and down in the heat exchanger core section to form a first core heat exchange group, the bent square fin channels and the bent circular mini-channels are alternately arranged up and down in the heat exchanger core section to form a second core heat exchange group, the first core heat exchange group and the second core heat exchange group are alternately arranged back and forth in the core heat exchange section to form a cross heat exchange group, a periphery of two rows of square fin channels that are of the cross heat exchange group and that are close to a front wall and a rear wall of the core heat exchange section is provided with three circular mini-channels for exchanging heat with the square fin channels, and the other square fin channels of the cross heat exchange group are respectively provided with circular mini-channels at upper, lower, left and right sides for exchanging heat with the square fin channels, wherein a circle center connecting line of upper and lower circular mini-channels and a circle center connecting line of left and right circular mini-channels are vertically intersected to form a cross shape.