| 摘要 |
PURPOSE:To prevent the intrusion of dust from the atmosphere and enable internal air to be purified in air cleaning by providing an air cleaning means downstream of an external air damper and arranging in parallel an internal air circulating damper to send circulating internal air. CONSTITUTION:When external air introducing system ventilation is carried out in parking, an actuator (not shown) stops suction of air so that an internal air 16a closes an air intake port 26 in a compartment. On the other hand, an external air damper 16b opens an external air introducing connecting port 25 by a force of a spring 24b. Thus, the external air is introduced from an intake port 5 into an electric dust collector 15 by the rotation of a fan 2 to be jetted 4 into the compartment after dust is removed. Also, when an internal air circulating system air cleaner is run in travelling, the internal air damper 16a is opened by the suction of the actuator (not shown) and the external air damper 16b is closed to stop the introduction of the external air, circulate the internal air and remove 15 dust. Thus, the intrusion of dust in the external air can be prevented to purify the internal air. |
