| 摘要 |
PURPOSE:To prevent an insulation fault due to dew water by installing a blower unit in the upper part of the inside of a casing of an air-conditioning ventilation fan and by installing a heat exchange element in the lower part thereof. CONSTITUTION:By the rotation of a motor 10, indoor air A is taken in from an indoor- side intake port 2 of a louver 4 by a vane 8 for ventilation and introduced into a heat exchanger element 13 from an exhaust air passage 15, and after it passes through an exhaust air passage of this heat exchanger element 13, it is exhausted outdoors from an outdoor-side discharge port 6 of a casing 7. Meanwhile, outdoor air B is taken in from an outdoor-side intake port 5 of the casing 7 and introduced into an air supply passage of the heat exchanger element 13 from an air supply passage 16, and after passing through the air supply passage of the heat exchanger element 13, it is supplied indoors from an indoor-side discharge port 3 of the louver 4. Dew water produced on a heat exchanger plate 12 on the exhaust air passage side of the heat exchanger element 13 due to a temperature difference between the indoor air A and the outdoor air B on the occasion is made to flow to the lower part of the exhaust-side passage under its own weight and by the indoor air A and discharged outdoors from a draining hole 14. Thereby an insulation fault due to dewing is prevented. |
