| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat exchanger used in a total enthalpy heat exchange type ventilation device, capable of improving mass-productivity, reducing manufacturing costs and preventing leakage of airflow. SOLUTION: In this heat exchanger 1a wherein an unit element 2a is formed by integrally molding spacial ribs 6a, 6aa for keeping a space between a heat transfer plate 4 and a heat transfer plate 4, and shielding ribs 7a, 7aa for shielding the leakage of airflow, with a resin, the plurality of unit elements 2 are stacked to form a ventilation flue 5 between the heat transfer plates 4, and the primary airflow and the secondary airflow are circulated to the ventilation flue 5 to exchange heat through the heat transfer plates 4, shielding rib injection ports 14a and spacial rib injection ports 15 are formed on positions connected to the spacial ribs 6a, 6aa and the shielding ribs 7a, 7aa as injection ports for injecting a molten resin. COPYRIGHT: (C)2008,JPO&INPIT
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