发明名称 |
AIR-CONDITIONING APPARATUS |
摘要 |
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. |
申请公布号 |
US2012096881(A1) |
申请公布日期 |
2012.04.26 |
申请号 |
US201013379439 |
申请日期 |
2010.04.20 |
申请人 |
SAKANOBE KAZUNORI;HATAKEYAMA KAZUNORI;MATSUSHITA SHINYA;KUSUBE SHINSAKU;MAKINO TSUTOMU;MITSUBISHI ELECTRIC CORPORATION |
发明人 |
SAKANOBE KAZUNORI;HATAKEYAMA KAZUNORI;MATSUSHITA SHINYA;KUSUBE SHINSAKU;MAKINO TSUTOMU |
分类号 |
F25B49/02 |
主分类号 |
F25B49/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|