| 摘要 |
PURPOSE:To prevent condensate from scattering in horizontal directions even at a high wind velocity and avoid the need of increasing sizes of a heat exchanger by installing a filter and a heat exchanger horizontally with regard to a vertical draft passage right under an outdoor air or circulating air inlet and providing a drain pan under the heat exchanger. CONSTITUTION:A draft passage 5 is constituted of a passage from an outdoor air inlet 2 and a circulating air inlet 3 to an air supplying opening 41. In the interior of vertical part of the draft passage a primary filter 6, a main filter 7 and a heat exchanger 8 are installed in this order from the outdoor air inlet 2 or the circulating air inlet 3, and a drain pan 9 is disposed right under the heat exchanger 8. The heat exchanger 8 is horizontally installed in such a manner that the exterior periphery of the heat exchanger 8 is in contact with four side walls constituting the draft passage 5 so as to close the vertical draft passage. Water condensed on fins of the heat exchanger 8 is forced to fall downward at a higher velocity by air flow passing between the fins when gravitationally moving downward along fin faces, and is received by the drain pan 9 disposed right under the heat exchanger 8 and discharged. |
