Knockout and compressor

The utility model provides a knockout and compressor. This knockout includes top liquid section (1), down partial liquid section (2) and connect in top liquid section (1) under with contraction section (3) between partial liquid section (2), and the internal diameter of top liquid section (1) and time partial liquid section (2) all is greater than the internal diameter of contraction section (3).According to the utility model discloses a knockout can reduce the noise that the pipeline refrigerant transmitted, improves user experience. 本实用新型提供种分液器和压缩机。该分液器包括上部分液段(1)、下部分液段(2)以及连接在上部分液段(1)和下部分液段(2)之间的收缩段(3)，上部分液段(1)和下部分液段(2)的内径均大于收缩段(3)的内径。根据本实用新型的分液器，能够减小管路冷媒传递的噪音，提高用户体验。