Rotary vane compressor, Wing-vane compressor, Compression mechanism, Non-contact vane, Friction loss
Low global warming refrigerants such as HFO (hydro fluoro olefin) -1234yf are attracted as an alternative working fluid in air-conditioning and cooling systems to address global warming. However, it used to require larger compressor size due to the lower fluid density compared with conventional refrigerants such as R410A. Thus, a new wing-vane compressor which has no contraction between the vane and the cylinder is developed to prevent increase in the size without performance degradation. The wing-vane compressor has higher compression efficiency compared to the conventional vane compressor as it has no friction loss of the tip of the vane and it can significantly reduce the mechanical loss for the conventional vane compressor. Since the structure of the wing-vane compressor is different from the conventional vane compressor, the load characteristic on the rotor and vanes are completely different from the conventional vane compressor. Therefore, the compression characteristics and the load characteristics are investigated by creating a dynamic model of the wing-vane compressor and a prototype of the wing vane compressor was operated using R134a refrigerant.. The results are as follows: (1) Characteristics of torque and load are equivalent to those of a conventional vane compressor. (2) Lubrication of the newly added partial arc guide bearings is important to ensure the reliability.