| 摘要 |
PURPOSE:To realize excellent ventialtion of a small scale communication shed and the like by means of simple equipment by a structure wherein a heat insulating plate is arranged parallel to a door surface with an interval serving as a blow-by passage, the upper part of which is connected in fluidic way with a hooded opening communicating to the inside of a room. CONSTITUTION:When the convection of air as indicated with the arrow A occurs within the room, the hot air flows out of the opening 9 and the outside air C1 flows into the room from an intake port 6 at the lower part of the door as indicated with the arrows C2 and C3. On the other hand, when the heat insulating plate 2 is heated by direct insolation, the air within the blow-by passage 5 is also heated and as a result ascends upward as indicated with the arrows D1 and D2. The resultant ascending air flow E pushes up the air within the blow-up passage 10 of a hood 3 toward the direction as indicated with the arrow H. Because of the pushing-up effect just mentioned above, the air in the room is sucked in the hood as indicated with the arrow G and exhausted to the outside of the room as indicated with the arrow I. In this case as for the air in the room, only the hot air in the neighbourhood of a ceiling is taken into the hood 3 by the interrupting action of a partition plate 11. In such a manner as mentioned above, a small scale room ventilation is accomplished by means of simple equipment. |
