| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a plate type heat exchanger capable of increasing rigidity around an opening of a heat transfer plate forming at least one of an inflow passage and an outflow passage while securing smooth flow of fluid.SOLUTION: A heat transfer plate includes a supporting part pushing out the periphery of an opening forming at least one of a first inflow passage, a second inflow passage, a first outflow passage and a second outflow passage, and forming a protruding surface on one surface side of a heat transfer part and forming a recessed surface on any other surface side, and forming an opened part penetrating the heat transfer part in the boundary with the periphery part, and at least one of the supporting parts are provided along an edge defining the opening, and a space continuous with a first space or a second space is formed between the periphery part of the opening of the heat transfer plate and the periphery part of the opening of the adjacent heat transfer plate, and the supporting part of the heat transfer plate is brazed between the supporting parts of the adjacent heat transfer plates, or on the recessed surface of the supporting part and in a position with no supporting parts in the space, or on the recessed surface of the supporting part.</p> |
