The magnetic clutch of the car air conditioner is controlled by the air conditioning switch, thermostat, air conditioning amplifier, pressure switch, etc., and turns on or off the power transmission between the engine and the compressor when needed. In addition, when the compressor is overloaded, it can also play a certain protective role.
Among them, the solenoid coil is fixed on the shell of the compressor, the drive disk is connected to the main shaft of the compressor, and the pulley is installed on the compressor head cover through the bearing, which can rotate freely.
When the air conditioning switch is turned on, the current passes through the electromagnetic coil of the electromagnetic clutch, and the electromagnetic coil generates electromagnetic suction, so that the drive disc of the compressor is combined with the pulley, and the torque of the engine is transmitted to the compressor spindle, so that the compressor spindle rotates. When the air conditioner switch is disconnected, the suction of the solenoid coil disappears, the drive disc and pulley are disengaged under the action of the spring plate, and the compressor stops working.
