| 摘要 |
PURPOSE: A natural ventilation system is provided to mechanically increase the wind velocity passing through the end of a ventilation opening by installation of the ventilation system at the end of the ventilation opening in order to improve ventilation performance. CONSTITUTION: A natural ventilation system(60) comprises a bottom plate(10), a middle plate(20), a top plate(30), a bottom guide collar(40), and a top guide collar(50). The bottom plate is installed in the end of a ventilation opening(1) and connected to an outlet of the ventilation opening through a connection hole(11). Discharged air from the ventilation opening is moved to outside by the bottom plate. The middle plate comprises a hole(21). The top plate leads the air to the inside of the ventilation system. The bottom guide collar is perpendicularly installed between the bottom and middle plates to support the middle plate. The top guide collar is perpendicularly installed between the middle and top plates to support the top plate.
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