| 摘要 |
The present invention relates to a dual-type natural ventilation apparatus with improved ventilatory volume. More specifically, the present invention significantly improves ventilatory volume without opening up the windows, which can keep the air pleasant while preventing condensation from forming. The existing natural apparatus has a small amount of ventilatory volume and a small problem of condensation forming during the winter. To solve the problems of the present invention, the present invention has a dual opening/closing flap which interlocks a pair of dual vents formed on top and bottom of the body frame respectively to significantly improve the ventilatory volume. Also, the dual opening/closing flap rotates independently and opens/closes only one of the dual vents to control the ventilatory volume. Moreover, the present invention prevents the formation of condensation when the condensation formation gasket integrated on a lower part of the body frame sticks to an upper part of the glass to completely block the air. |
