The main characteristics of the screw compressor have the following three points: 1 high performance. This type of compressor has a plurality of compression chambers. The compression process has less fluid leakage and high compression efficiency. The general parameter COP (performance factor: ratio of cooling effect to compressor input power) indicating the performance of the compressor, the experiment confirmed that the potential is relatively high. The spiral blade manufacturing technology is improved, and the dimensional accuracy is high, so that the COP of the product is worth improving. 2 low vibration and low noise. The rotation has a very small variation in the torque and there is no suction valve. Therefore, the compressor can be continuously compressed and discharged, and the vibration of the noise compressor can be greatly reduced as compared with the existing compressor. The experimentally measured noise is lower than that of the rotary compressor. Since the vibration does not depend on the rotational speed, the rotational vibration from high speed to low speed is small and the potential is high. 3 miniaturization. This type of compressor is only 50% smaller than the reciprocating compressor. The elastic material used in the compression component of the screw compressor has its unique characteristics, which can achieve further low vibration, low noise and miniaturization. Products with this type of compressor should have the same mute effect as non-compressed products. The development of technology for propelling elastic materials with spiral blades makes this product the mainstream of future compressors, which not only expands its application range, but also contributes to the development of new machine products. This can be said to be an excellent structural form that is beneficial to improving product reliability and productivity. However, as the winding diameter of the winding is thickened, the curvature of the outlet of the winder outlet is also increased, which is advantageous for positioning the winding. Therefore, it is better to further increase the angle of the core.