Plate-type heat exchanger and a method for manufacturing same

A plate type heat exchanger, comprising:

• first and second plates stacked on each other in a vertical direction to form a space portion to allow a fluid to flow;
• and
• an adhesive layer interposed between the first and second plates and formed by an adhesive agent, wherein the first plate and the second plate each includes:
• a plate body having a port opening to allow the fluid to flow in or flow out;
• and
• a flange portion configured to define an edge portion of the plate body and having a shape bent at least two times, wherein the plate body includes a plurality of uneven portions in which a plurality of protrusion portions and a plurality recessed portions are alternately arranged, wherein the adhesive layer includes:
• first and third adhesive portions interposed between the flange portion of the first and second plates configured to extend in a horizontal direction;
• and
• a second adhesive portion configured to extend in the vertical direction toward the third adhesive portion from the first adhesive portion, wherein the adhesive agent is provided on an entire surface of the first plate including an entire surface of the plurality protrusion portions of the first plate and an entire surface of the plurality recessed portions of the first plate, wherein the plurality protrusion portions of the first plate and the plurality recessed portions of the second plate are adhered by the adhesive agent to form a flow passage, wherein the flange portion is bent from the plate body fourth times and extends therefrom, wherein the flange portion includes:
• a first wall bent from the plate body and extending in the vertical direction;
• a second wall bent from the first wall;
• a third wall bent from the second wall, and configured to extend parallel to the direction in which the first wall extends;
• and
• a fourth wall bent from the third wall, configured to extend parallel to a direction in which the second wall extends, and configured to be supported by the second wall of the other of the first plate or the second plate, and wherein the direction in which the second and fourth wall extend is toward the outside of the plate body.