The invention discloses a micro-channel
evaporator and a control method thereof. The micro-channel
evaporator comprises three liquid collecting pipes, flat pipes, fins, an
electromagnet, a power supply and a
throttle plate, wherein the throttling plate is added in the middle of the third liquid collecting
pipe, throttling holes are formed in the throttling plate, the throttling plate is made of amagnetic material, the third liquid collecting
pipe is provided with a protruding channel, and the
electromagnet is arranged in the protruding channel. According to the
evaporator, when the micro-channel evaporator works under a frosting working condition, the power supply is powered on, and the throttling plate can
throttle a
refrigerant flowing from a front-row
heat exchanger, so that the temperature of a rear-row
heat exchanger of the micro-channel evaporator is lower, the frosting capacity of the rear-row
heat exchanger is higher, frosting performs towards the rear-row heat exchanger, uniform frosting of the micro-channel evaporator is achieved, and the performance of the micro-channel evaporator under the frosting working condition is improved; and when the micro-channel heat exchangeevaporator works under a non-frosting working condition, the power supply is
cut off, and the throttling plate does not play a throttling role at the moment, so that the resistance of the micro-channel evaporator is reduced, and the improvement of the energy efficiency of the micro-channel evaporator is facilitated.