To provide a laminated heat exchanger that has high pressure-tight strength and is compact with satisfactory heat transfer performance.
A plate 1 is folded into a wave shape to form channels 3 and 5 on both surfaces. The projected part at the upper stage and the recessed part at the lower stage are butted, and the recessed part at the upper stage and the projected part at the lower stage are butted for lamination. The channels 3 and 5 are formed adjacent to the direction along the plate 1, and the channels 3 and 5 are also formed on the multistage in the direction of lamination. Fluids A and B flow alternately in the channels 3 and 5 adjacent to the direction and along the plate 1, and the same kind of fluid A or B flows in the channels 3 and 5, in the direction in which the plates 1 are laminated.
UCHIDA MARI
AOYAMA MITSUGI
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