| 摘要 |
PURPOSE: A device for warning of a replacement cycle of a filter for an air conditioner for a vehicle is provided to sense drop of air-passing pressure caused by foreign materials accumulated on the surface of the filer by installing a pressure sensor to the inside of the filter, and to maintain the air of the room of the vehicle in a delightful state by exactly warning of the replacement cycle of the filter without improper use of the filter. CONSTITUTION: An air conditioner for a vehicle has a duct(1) connected to the room of the vehicle; an evaporator coil; a heater coil; and a blower(3) for forcibly sucking in external air; and an air filter(4) installed in front of evaporator coil. The width of the filter is divided into multitude. Pressure sensors(5) are disposed to the inside of the filter. Each pressure sensor is installed to each divided position of the filter. When measurement values of the pressure sensors drop under a predetermined value, the drop is transmitted to a warning unit of the room of the vehicle.
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