| 摘要 |
PURPOSE:To improve the air-curtain effect of conditioned air and to prevent intrusion of outer air reliably, by sucking the conditioned air and the outer air by means of an auxiliary fan arranged on the floor of a vehicle when the door is opened during air-conditioning operation. CONSTITUTION:A cooling unit 4 incorporating a fan 3, an evaporator, etc. is arranged in a cover 1 disposed in the ceiling section of a vehicle such as a bus 2. Cooling ducts 5, 6 are arranged in the ceiling section along the advancing direction. In such arrangement, a suction port 11 and a discharge port 12 having punching metals are formed at the opposite sides of a vertical sideboard 9a of a step 9. An auxiliary, fan 15 comprising a motor 13 and a fan 14 is arranged in the step 9. Consequently, when a door 10 is opened, conditioned air and outer air are sucked by the auxiliary fan 15 so as to improve the air- curtain effect. |
