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发明授权
CN107429931B 空调机 有权 转让

空调机
摘要：
本发明提供能够低成本且高精度地检测空调机的室外机或室内机的壳体的共振的空调机。空调机的室外机(1)具备：螺旋桨风扇(2)，向热交换器送风；风扇电动机(3)，驱动螺旋桨风扇(2)；电流检测部(5)，检测风扇电动机(3)的电流值；相位检测部(6)，检测风扇电动机(3)的磁极位置；风扇旋转速度检测部(7)，检测风扇电动机(3)的旋转速度；脉动检测部(8)，基于检测到的风扇电动机(3)的电流值以及磁极位置检测电流值的脉动；以及共振判定部(9)，根据检测到的电流值的脉动以及风扇旋转速度，判定具有风扇电动机(3)的室外机或室内机的壳体的系统的共振。控制部(4)在共振判定部(9)判定为共振的情况下，执行使风扇旋转速度增加或者减少预定旋转速度的共振避免控制。
摘要（英）：

An air conditioner capable of detecting resonance of a casing of an outdoor or indoor unit of an air conditioner at a low cost with high accuracy is provided. An outdoor unit (1) of the air conditioner includes: a propeller fan (2) that blows air to a heat exchanger; a fan motor (3) that drives the propeller fan (2); a current detector (5) that detects a current value of the fan motor (3); a phase detector (6) that detects a magnetic pole position of the fan motor (3); a fan rotation speed detector (7) that detects a rotation speed of the fan motor (3); a pulsation detector (8) that detects pulsation of the current value on the basis of the detected current value and magnetic pole position of the fan motor (3); and a resonance determiner (9) that determines resonance of a system of a casing of the outdoor or indoor unit having the fan motor (3) based on the detected pulsation of the current value and fan rotation speed. If the resonance determiner (9) determines resonance, a controller (4) executes resonance avoidance control for increasing or decreasing the fan rotation speed by a predetermined rotation speed.

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