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    • 4. 发明授权
    • Air-conditioning apparatus
    • 空调机
    • US08944777B2
    • 2015-02-03
    • US13379439
    • 2010-04-20
    • Kazunori SakanobeKazunori HatakeyamaShinya MatsushitaShinsaku KusubeTsutomu Makino
    • Kazunori SakanobeKazunori HatakeyamaShinya MatsushitaShinsaku KusubeTsutomu Makino
    • F25B49/02
    • F25B49/025F25B49/005F25B2500/13F25B2500/26F25B2600/021Y02B30/741
    • The air-conditioning apparatus includes a coolant circuit configured by sequentially connecting a compressor, an indoor heat exchanger, an expansion valve, and an outdoor heat exchanger; a motor that operates a compressor mechanism disposed inside the compressor; an inverter for driving the motor; and a control unit that controls the inverter. The control unit includes a liquefaction detecting unit that detects coolant liquefaction in the compressor; includes a first PWM signal generating unit that generates an inverter control signal for driving the motor; includes a second PWM signal generating unit that generates an inverter control signal for making the motor perform a preheating operation; and includes a switching unit that performs switching in such a way that the first PWM signal generating unit or the second PWM signal generating unit outputs the corresponding inverter control signal to the inverter.
    • 所述空气调节装置具备将压缩机,室内热交换器,膨胀阀,室外热交换器依次连接而构成的冷却回路; 操作设置在压缩机内部的压缩机构的电动机; 用于驱动马达的逆变器; 以及控制逆变器的控制单元。 控制单元包括液化检测单元,其检测压缩机中的冷却剂液化; 包括:第一PWM信号生成单元,其生成用于驱动电动机的逆变器控制信号; 包括:第二PWM信号生成单元,其生成用于使所述电动机进行预热运转的逆变器控制信号; 并且包括切换单元,其以使得第一PWM信号生成单元或第二PWM信号生成单元向逆变器输出相应的逆变器控制信号的方式进行切换。