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    • 3. 发明申请
    • LINEAR COMPRESSOR
    • 线性压缩机
    • WO2011062427A3
    • 2011-11-03
    • PCT/KR2010008159
    • 2010-11-18
    • LG ELECTRONICS INCHU JIN SEOKPARK SHIN HYUNKIM YONG TAEKIM YOUNG GEULLEE HOON BONGKANG KYE LYONG
    • HU JIN SEOKPARK SHIN HYUNKIM YONG TAEKIM YOUNG GEULLEE HOON BONGKANG KYE LYONG
    • F04B17/04F04B35/04
    • F04B35/045F04B49/065F04B2203/0402
    • The present invention relates to a linear compressor, and more specifically, to a linear compressor capable of providing greater power by varying a frequency during the high load condition. The linear compressor of the present invention comprises: a fixed member which includes a compression space inside; a movable member which linearly reciprocates inside the fixed member, and compresses refrigerant sucked into the compression space; at least one spring which is configured to elastically support the movable member in a moving direction of the movable member; a mechanical unit which includes a motor that is configured to connect with the movable member and allows the movable member to linearly reciprocate in an axial direction; a rectification unit which receives AC power, and outputs the AC power as a DC voltage; an inverter unit which is applied with the DC voltage, converts the DC voltage into an AC voltage according to a control signal, and provides the AC voltage to the motor; a voltage sensor which senses the DC voltage outputted by the rectification unit; a current sensor which senses a current flowing between the motor and the inverter unit; and an electric control unit including a controller, which controls a necessary voltage of the motor from the current of the current sensor, and applies the control signal to the inverter unit by generating the control signal for controlling so that a frequency of the AC voltage converted by the inverter unit may be changed, if the necessary voltage is larger than the DC voltage of the voltage sensor.
    • 本发明涉及一种线性压缩机,更具体地说,涉及能够通过在高负载状态下改变频率来提供更大功率的线性压缩机。 本发明的线性压缩机包括:内部具有压缩空间的固定部件; 可动构件,其在所述固定构件的内部直线运动,并且压缩吸入所述压缩空间的制冷剂; 至少一个弹簧,其构造成在所述可动构件的移动方向上弹性地支撑所述可动构件; 机械单元,其包括被构造成与所述可动构件连接并允许所述可动构件沿轴向线性往复运动的马达; 整流单元,其接收交流电力,并输出交流电力作为直流电压; 施加了直流电压的逆变器单元根据控制信号将直流电压转换为交流电压,并向电动机提供交流电压; 感测由整流单元输出的直流电压的电压传感器; 感测在电动机和逆变器单元之间流动的电流的电流传感器; 以及电气控制单元,其包括控制器,其从电流传感器的电流控制电动机的必要电压,并且通过产生用于控制的控制信号将控制信号施加到逆变器单元,使得AC电压转换的频率 如果必要的电压大于电压传感器的直流电压,则可以改变逆变器单元。