| 摘要 |
PURPOSE:To obtain a heat exchanger having high heat exchanging efficiency by a method wherein opposite ends of the opening of first and second pipe groups are opposed, respective openings are partitioned so that respective openings does not communicate and openings are provided on the side surface parallel to the first and second pipe groups. CONSTITUTION:The primary airflow outflow opening 3c of an aluminum pipe 3 and the secondary airflow outflow opening 5c of the aluminum pipe 5 are fixed alternately to a fixing plate 6 at the intermediate position of the main body 1 of a heat exchanger so that primary airflow A is not mixed with secondary airflow B. A primary airflow discharging port 7 and secondary airflow discharging port 8 are provided near the end surfaces 2, 4 of the side surface of the main body 1 of the heat exchanger while ports except the primary airflow discharging port 7 and the secondary airflow discharging port 8 are closed. Accordingly, the airflow paths of the primary airflow A and the secondary airflow B are made of aluminum and are provided with the same configuration, therefore, the flow amount of the primary airflow A and the secondary airflow B are controlled easily and the decrease or heat exchanging efficiency due to the unbalance of the flow amount of the primary airflow A and the secondary airflow B may be restricted.
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