Patent ID: 9429352
Filing Date: 2016-08-30
CPC Classification: F24F,F25D

Claim Text:
1. An air conditioner comprising: a compressor; a heat exchanger performing heat exchange between a refrigerant and air through movement of the air; a frost formation detector provided in the heat exchanger for detecting a frost formation degree in the heat exchanger and to output a detection signal based on the frost formation degree; and a controller configured to compute a frost formation level due to freezing in the heat exchanger according to the detection signal inputted from the frost formation detector, and to perform a defrosting operation according to the frost formation level, wherein the frost formation detector comprises a plurality of switches, wherein the switches are arranged in a body provided at the heat exchanger; wherein each switch comprises: wherein each of the layers of electrodes comprises two outer electrodes spaced apart from a central electrode, wherein one terminal of each of the electrodes is fixed to the body, and another terminal of each electrode is inserted into the heat exchanger, so that the outer electrodes are configured to turn the switches on by bending towards and making contact with the central electrode due to the freezing in the heat exchanger.