Air conditioner controlling prheating power of compressor and mechanism providing preheating power for compressor

摘要

An air conditioner equipped with a compressor, an indoor heat exchanger and an outdoor heat exchanger includes: an inverter circuit that drives a motor of the compressor; an inverter-power detecting unit that detects power of the inverter circuit; a PWM-signal generating unit that inverter-current detecting unit generates PWM signals for controlling the inverter circuit; a voltage-command-value generating unit that outputs voltage command values to the PWM-signal generating unit; and an accumulation detecting unit that detects accumulation of a liquid refrigerant within the compressor and outputs a detection result to the voltage-command-value generating unit, wherein when accumulation of a liquid refrigerant within the compressor is detected, the voltage-command-value generating unit outputs the voltage command value so that power of the inverter circuit has a predetermined power value.

主权项

1. An air conditioner including a compressor, an indoor heat exchanger, and an outdoor heat exchanger, the compressor having a motor in which an inductance value is different depending on a position of a rotor, the air conditioner comprising:
an inverter circuit that drives the motor of the compressor; an inverter-power detecting unit that detects power of the inverter circuit; a PWM-signal generating unit that generates PWM signals for controlling the inverter circuit; a voltage-command-value generating unit that outputs voltage command values to the PWM-signal generating unit; and an accumulation detecting unit that detects accumulation of a liquid refrigerant within the compressor and outputs a detection result to the voltage-command-value generating unit, wherein when accumulation of a liquid refrigerant within the compressor is detected, the voltage-command-value generating unit outputs the voltage command values so that power of the inverter circuit has a predetermined power value.