The polytropic efficiency of inverter scroll compressor is put forward,and the laws of the impact on revolution to polytropic compression head,loss through leaking,friction loss and loss through flowing are acquired.

According to the inherent characteristic of inverter scroll compressor,its test and data gathering/analysis system is developed.

Investigation and improvement of the wrong start- up for rotary compressor in product line;

This paper introduces the working principle of a new type of rotary compressor whose rotor rotates around its own rotation axis following the working method of parallel move.

Since the accumulator is one of the most important component with the largest sound radiation surface area in rotary compressor,its noise contribution may be substantial.

Analysis and comparison of mechanism of the two embeddedVane type rotary compressors;

Indentifying and suppression of low frequency noise from the rotary compressor

This paper introduces the structure and principle of embedded-vane type rotary compressor,deduces the calculation formulae for the kinematic parameter of the main components such as the cylinder,the rotor,the plunger,the blade and the end-plates and then analyses how these parameters affect the behaviors of the friction and wearing of the compressor.