| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a plate heat exchanger capable of suppressing pressure loss in a first communication passage and suppressing irregular distribution of a first fluid from the first communication passage to a plurality of first channels.SOLUTION: According to the present invention, a main body 3 including a plurality of heat transfer plates 2 comprises a reference block BLincluding a plurality of first channels Ra at positions halfway in a stack direction; and at least one channel block BLto BLincluding at least one first channel 30 and provided on either side of the reference block BL. A channel of a first fluid A is formed to extend from one communication passage 32 to the other communication passage 33 by connecting the first channels 30 constituting blocks BLn and BLadjacent to each other in a flow direction of the first fluid A so as to form a folding channel. The number of the first channels 30 at an end position of the channel of the first fluid A is smaller than the number of the first channels 30 constituting the reference block BL.</p> |
