Heat exchanger and method of manufacturing a heat exchanging member of a heat exchanger

摘要

A heat exchanger is provided for alternating flow of supply air and exhaust air in opposite directions between a plurality of stacked heat exchanging members (9). The heat exchanging members (9) are composed of a first paper member (10a) having a moisture permeability and corrugated in the width direction and having flat portions (10b, 10c) at the longitudinally opposite ends flattened under pressure. A pair of second paper members (11, 12) are joined to the flat portions (10b, 10c) and extend flatly in the longitudinal direction to define a header portion (11a, 12a). The number of the parts can be decreased and the assembly can be made easier, whereby a heat exchanger with an improved productivity can be provided. A method for manufacturing a heat exchanger is also disclosed.