Printed circuit-type heat exchanger having integral structure

A printed circuit heat exchanger comprising:

• a stack of channel plates including
• a plurality of first channel plates and a plurality of second channel plates, the first and second channel plates having a rectangular planar structure, the rectangular planar structure having two pairs of sides along a first direction and a second direction, the first direction and the second direction being perpendicular to each other,
• wherein the first channel plates and the second channel plates are alternately stacked on one another, such that fluids A and B are heat-exchanged between the first and second channel plates,
• the first channel plate having a fluid path in first pattern for fluid A extending in two divided branches on one surface thereof,
• wherein inflow and outflow parts for fluid A are formed on first and second opposite end sides, in the first direction, of the fluid path for fluid A, the inflow and outflow parts for fluid A being formed within the rectangular planar structure of the first channel plate,
• wherein the fluid path in the first pattern for fluid A extends from the inflow part for fluid A to the outflow part for fluid A by bending in a first serpentine shape between the inflow part and the outflow part for fluid A, such that multiple portions of the fluid path in the first pattern for fluid A extends in the first direction and other multiple portions of the fluid path in the first pattern for fluid A extends in the second direction,
• the second channel plate having a fluid path in a second pattern, wherein the first pattern is different from the second pattern for fluid B intersecting with the fluid path for fluid A on one surface thereof,
• wherein inflow and outflow parts for fluid B are integrally formed on third and fourth opposite end sides, in the second direction, of the fluid path for fluid B, the second direction being perpendicular to the first direction,
• wherein the fluid path in the second pattern for fluid B extends from the inflow part for fluid B to the outflow part for fluid B by bending in a second serpentine shape between the inflow part and the outflow part for fluid B, such that at least one portion of the fluid path in the second pattern for fluid B extends in the first direction and at least one other portion of the fluid path in the second pattern for fluid B extends in the second direction,
• wherein the first channel plate has communicating structures corresponding to the inflow and outflow parts for fluid B on opposite sides thereof;
• an upper plate section attached to an upper surface of the stack to close the upper surface of the stack;
• a lower plate section attached to an undersurface of the stack to close the undersurface of the stack;
• the stack of channel plates having an integrated conventional inflow header formed thereon;
• the upper plate section providing a top cover of the integrated conventional inflow header and the lower plate section providing a bottom cover of the integrated conventional inflow header and
• wherein the fluid path for fluid A has a planar structure in which the fluid path divides into two divided branches in a symmetrical form from the inflow part for fluid A,
• wherein the first channel plate comprises at least three pairs of inflow and outflow parts for fluid A, which include a first, second, and third pairs, and at least three fluid paths for fluid A corresponding to the at least three pairs of inflow and outflow parts for fluid A, the at least three fluid paths for fluid A including a first, second, and third fluid paths for fluid A corresponding to the first, second, and third pairs of inflow and outflow parts for fluid A, respectively,
• wherein each of the first, second, and third fluid paths for fluid A exclusively and only communicates between corresponding one pair of the first, second, and third pairs of inflow and outflow parts for fluid A, such that
• the first fluid path for fluid A communicates exclusively and only between the first pair of inflow and outflow parts for fluid A,
• the second fluid path for fluid A communicates exclusively and only between the second pair of inflow and outflow parts for fluid A, and
• the third fluid path for fluid A communicates exclusively and only between the third pair of inflow and outflow parts for fluid A,
• wherein the second fluid path for fluid A is positioned between the first fluid path for fluid A and the third fluid path for fluid A, and the first fluid path for fluid A and the third fluid path for fluid A are serpentinely bent in a symmetric manner to each other relative to the second fluid path for fluid A.