PROBLEM TO BE SOLVED: To provide a control drive unit of an electric compressor which can suppress the generation of a so-called undershoot at the transition of cooling.SOLUTION: A control drive unit of an electric compressor comprises: an electric compressor which contains a variable speed motor, and compresses an air-conditioning refrigerant; temperature detection means which detects a temperature of an evaporator; and an inverter which controls the number of revolutions of the electric compressor. The number of revolutions of the variable speed motor is controlled so that the number of revolutions of the electric compressor follows a control target value according to an air-conditioning operation state by a refrigeration cycle, and a lower limit value is arranged at a rotation number change rate being a ratio at which the number of revolutions is changed in a prescribed time at the following according to a difference between a target evaporator temperature being a target temperature of air passing through the evaporator, and an actual evaporator temperature being an actual temperature of the air passing through the evaporator.
【課題】冷房の過渡期において、いわゆるアンダーシュートの発生を抑制できる電動圧縮機の制御駆動装置を提供する。【解決手段】可変速モータを内蔵し空調用の冷媒を圧縮する電動圧縮機と、エバポレータの温度を検出する温度検出手段と、電動圧縮機の回転数を制御するインバータとを備え、冷凍サイクルによる空調運転状態に応じて、電動圧縮機の回転数を制御目標値に追従させるように可変速モータの回転数を制御するようにし、追従させる時の所定時間に回転数が変化する割合である回転数変化率を、エバポレータを通過した空気の目標温度である目標エバポレータ温度とエバポレータを通過した空気の実際の温度である実エバポレータ温度の差に応じ回転数変化率の下限値を設けた。【選択図】図2
CONTROL DRIVE UNIT OF ELECTRIC COMPRESSOR
電動圧縮機の制御駆動装置
02.11.2015
Patent
Elektronische Ressource
Japanisch
IPC: | F24F Klimatisierung , AIR-CONDITIONING / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS |
Europäisches Patentamt | 2019
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