| 摘要 |
PROBLEM TO BE SOLVED: To provide a plate type heat exchanger which can suppress impurities contained in a fluid from being caught in a peripheral edge of a flow passage hole for defining a fluid inflow passage.SOLUTION: A first space for distributing a first fluid and a second space for distributing a second fluid are alternately formed across heat transfer plates. Flow passage holes are formed by sealing peripheries of opposite openings of the adjacent heat transfer plates. A first inflow passage and a first outflow passage communicating to the first space are formed by respectively connecting the flow passage holes at two parts. A second inflow passage and a second outflow passage communicating to the second space are formed by connecting the flow passage holes at other two parts, respectively. A plurality of flow passage holes for defining the first inflow passage are formed so that a base region of overlapping with the adjacent flow passage holes to each other is included, and a peripheral edge on a first space side is arranged differently from the peripheral edge part on the first space side of the adjacent flow passage hole. |
