| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning device that can accurately detect clogging of a filter without increasing the number of components.SOLUTION: In a vehicular air conditioning device 10, torque T calculated from a motor current of a fan motor 33 and a set determination value are compared with each other by using an air conditioner ECU 13, so as to determine replacement timing of a filter 31. The motor current of the fan motor 33 is correlated with the load torque T of the fan 32. The motor current is internal control information of the fan motor 33, and is used for motor control even in the existing fan motor 33. Therefore, without providing a new sensor, etc. in the fan motor 33, determination control is performed by using the internal control information which the fan motor 33 originally has.SELECTED DRAWING: Figure 5 |
