| 摘要 |
PURPOSE: A high efficiency ventilation device is provided to generate the separate airflow with the suction force according to the pressure drop phenomenon generated in the continuous process of the air, and to have the effect of increasing the ventilation efficiency by doubling the ventilation function by doubling the amount of the whole air flowing through the ring aerial sepulture value for the unit time. CONSTITUTION: The high efficiency ventilation device includes: a driving motor(100); a impeller(110); a inner fan case; and a outer fan case(200). The impeller is combined in the motor shaft(101) of the drive motor. A plurality of motor fixing stands(120) are installed in the inner side fan case so that the drive motor be supported in the central part installation. The cylindrical center midway(150), in which one side suction part(130) and the other side exhausting part(140) of the inner side fan case have constant cross sections, is formed. The outer fan case is supported with a plurality of support stands(170) to protect the outside fringe part of the inner side fan case and forms bypass passage(180) by the space of the regular interval. The outer fan case is formed into the incline(210) of the corn type in which the outlet side more and more becomes narrow. The outer fan case is extended longer than the end of discharge unit end part of the inner side fan case and forms pressure drop part(190) in the meeting part with the center midway.
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