Patent ID: 9499760
Filing Date: 2016-11-22
CPC Classification: C09K,C10M,C10N,F04C,F25B

Claim Text:
1. An air conditioning apparatus comprising: a compressor to compress a refrigerant; an outdoor heat exchanger to perform heat exchange between outdoor air and the refrigerant; an indoor heat exchanger to perform heat exchange between indoor air and the refrigerant; and an expansion valve to depressurize the refrigerant, wherein the refrigerant includes methylene fluoride, the weight percentage of the methylene fluoride being at least 40%; the compressor comprises a compression unit to compress the refrigerant, a motor unit to provide rotational power to the compression unit through a rotating shaft connected to the compression unit, and an oil accommodation portion to store oil to reduce friction between the rotating shaft and the compression unit and lower a temperature of the compressor, the oil containing a carbon nanoparticle; a compressor oil fraction is 35% to 45%, where the compressor oil fraction is a compressor oil volume divided by an effective volume of an interior of the compressor; and the effective volume represents a volume obtained by subtracting volumes of the motor unit and the compressor unit from an entire volume of the compressor.