| 摘要 |
PURPOSE:To form the air-conditioning and ventilating fan, miniaturized, inexpensive and capable of obtaining large amount of airflow in case it is necessary, by a method wherein the fan is provided with a main body section, effecting heat exchange and ventilation having high effect of energy saving normally, and a fan unit, developing a great effect when large amount of airflow is necessary. CONSTITUTION:A heat exchanger 5 is constituted by laminating a heat transfer plate 6 and a distance plate 7 alternately so that the directions of neighboring airflows are intersecting orthogonally. Indoor air passes through a discharging air flow path A A' and is discharged to the outside of a room. On the other hand, outdoor air passes through a supplying air flow path B B' and enters into the heat exchanger 5 by air supplying blades 10 driven by a motor 4, thereafter, is supplied into the room. When the fan unit is operated, the indoor air passes through a passageway C C' and is discharged to the outside of the room. The main body section, effecting ventilation under carrying out heat exchange having high energy saving effect, is operated usually and in case the large amount of airflow is necessitated, the fan unit is operated and thereby obtaining good ventilating effect. |
