| 摘要 |
A plate type heat exchanger 100 is a plate type heat exchanger in which a first flow path 11 through which a first fluid circulates and a second flow path 12 through which a second fluid circulates are alternatively formed between a plurality of heat transfer plates 7, and an inner fin 6 is disposed at least in the first flow path 11. Further, in the plate type heat exchanger 100, recessed grooves 8, 9 having a dimension smaller than that between fin sections of the inner fin 6 are formed along a flow direction of the first fluid in an area of the inner fin 6 that faces the heat transfer plate 7 and on the heat transfer plate 7. |
