The refrigerator compressor running ways

     Refrigeration mainly by compressor refrigerator, but started compressor by what way? First of all, the refrigerator compressor with single-phase motor, due to the different startup mode can be divided into impedance phase splitting operated operated (RSIR), capacitance (CSIR), capacitance startup capacitor operation type (CSR).

(1) the principle of impedance phase splitting operated

    Compressor motor stator winding inductance coil, because running winding and start winding wire diameter and number of turns are not identical, so there are different impedance. When two winding is connected to the ac circuits, they run the winding current hysteresis voltage of 90 ° can produce two different impedance values, although arrived two winding is on the aspect of 50 hz alternating current (ac), and will produce different phase difference in the two winding current and voltage, resistance split phase effect, starting torque. When the motor speed reaches 70% ~ 80% of rated speed, the startup winding under the control of the starter relay disconnect start winding circuit, only by running winding drive motor running.

(2) the principle of capacitance operated

    Compressor motor operated circuit of capacitance and impedance phase splitting operated circuit are similar, the difference is in the startup winding in series a 220 v, 45 ~ 100 u F capacitor, make the phase splitting phase circuit increases, also increase start torque, starting current is reduced, characteristics of startup are greatly improved.

(3) the capacitor start, the working principle of capacitance type operation

    Capacitor start, the compressor motor starting circuit of capacitor operation type, and capacitance operated circuit is the difference between: beside the start relay and start capacitor in parallel with a small capacity of the capacitor, when the end of the process, start capacitor after cut off from the circuit, startup and running windings in parallel, thus start winding can bear part of the motor load, which greatly improved the efficiency of the motor.