Patent ID: 8123490
Filing Date: 2012-02-28
Classification: F04B

Abstract:
1. An apparatus for controlling an electric compressor which drives the compressor constituting an air conditioner by using a motor, characterized in that processing performed by the apparatus comprises: processing for avoiding motor overload caused by a pressure difference of a refrigerant between the inlet side and the outlet side of the compressor by keeping the number of revolutions of the motor not higher than a preset first number of revolutions when the actuation of the motor is started; and processing for increasing the number of revolutions of the motor to a second number of revolutions not lower than the first number of revolutions, wherein, in the processing for avoiding motor overload caused by the pressure difference of the refrigerant, a rate of rise S said apparatus further performs processing for monitoring whether a current supplied to drive said motor exceeds a preset threshold value, immediately after the actuation of said motor is started, the number of revolutions of said motor is increased at a rate of rise S