| 摘要 |
PURPOSE:To prevent formation of dead water area in the wake flow side of a refrigerant flow path and increase the performance of the heat exchanger by splitting or the like of fins by a method wherein the flat plate type refrigerant flow paths, constituted by laminating a plurality of flat plate members, are arranged in parallel to the direction of air stream and a plurality of fin members, parallel to the direction of air stream, is attached to the outer walls of the refrigerant flow paths. CONSTITUTION:The flat plate type refrigerant flow path 5 is constituted of a flow path member 12, a header member 14, communicating a plurality of slits 11 mutually and provided with headers 13 to which the inlet pipe 7 and the outlet pipe 8 of refrigerant are attached, and outer wall members 15, which are laminated and integrated. A plurality of L-shaped fin members 6 are attached to the outer walls of the refrigerant flow path 5 so as to be in parallel to the direction of air stream 9 substantially while the pitch P of the fin members 6 is designed so as to be larger at the upstream side of the airflow under considering the frosting phenomenon. Air flows smoothly between the fin members 6 along the refrigerant flow path 5 and exchanges the heat thereof with the heat of the refrigerant, flowing in the refrigerant flow path 5, without being adversely affected by the dead water area of the refrigerant flow path and, therefore, the fins may be utilized effectively and the heat transfer performance of the heat exchanger may be increased.
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