| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plate type heat exchanger which can restrain a ring gasket which demarcates a primary side inflow channel for circulating high temperature fluid from being deteriorated by heat, and maintain a sealing state between heat transfer plates over a long period of time. <P>SOLUTION: A primary-side main channel and a secondary-side main channel are alternately formed with each of a plurality of laminated heat transfer plates as a border. First openings of the respective heat transfer plate are made continuous, and the primary-side inflow channel and a primary-side outflow channel which make the high temperature fluid flow in and out to/from the primary-side main channel are formed. Second openings of the respective heat transfer plates are made continuous, and a secondary-side inflow channel and a secondary-side outflow channel which make low temperature fluid flow in and out to/from the secondary-side main channel are formed. A gasket for forming the secondary-side main channel, which is interposed between one side faces of adjoining heat transfer plates in a state of being arranged to surround the two second openings, is arranged while surrounding the outer circumference of the ring gasket interposed between the one side faces in a state of being arranged around the first openings. <P>COPYRIGHT: (C)2012,JPO&INPIT |
