REFRIGERATOR FOR CONSTANTLY KEEPING PROJECTION FORCE OF ELECTRONIC SOLENOID REGARDLESS OF ROTATION CHANGE TOWARD DIRECT CURRENT BRUSHLESS MOTOR

摘要

PURPOSE: A refrigerator is provided to stabilize the projection force of an electronic solenoid in opening a door even though a DC(Direct Current) power circuit of a DC brushless motor of a compressor and a DC power circuit of the electronic solenoid are used in common. CONSTITUTION: A refrigerator is composed of a DC power circuit(28) for converting and outputting the input of an alternating current; an inverter main circuit(29) formed by coupling switching elements by a three-phase bridge to output a direct current output from the DC power circuit into a three-phase alternating current; a compressor driving DC brushless motor for receiving voltage from the inverter main circuit; a door opening unit(20) coupled to receive the output of the direct current from the DC power circuit; an operating switch(12) applying an electric current to the door opening unit; a control unit(30) for controlling the rotation of the DC brushless motor by applying a driving signal to the switching elements of the inverter main circuit and the driving of the door opening unit by applying the electric current for the predetermined time by an operation of the operating switch; and a voltage detecting unit for detecting voltage output from the DC power circuit to the inverter main circuit and outputting the voltage to the control unit. The control unit changes the predetermined time for applying the electric current to the door opening unit by the voltage detecting unit.