Crankshaft, air cylinder, rotary compressor and refrigeration equipment

The utility model provides a crankshaft, cylinder, rotary compressor and refrigeration equipment, the crankshaft is applied to the rotary compressor, the crankshaft comprises a main shaft section, an eccentric shaft section and an auxiliary shaft section which are connected in sequence, and the side wall of at least one of the main shaft section, the eccentric shaft section and the auxiliary shaft section is provided with a texture. According to the technical scheme, the abrasion condition of the crankshaft can be improved, the performance and reliability of the rotary compressor are improved, the friction loss of the compressor is reduced, and the refrigeration efficiency is improved. 本实用新型提出一种曲轴、气缸、旋转式压缩机以及制冷设备，所述曲轴应用于旋转式压缩机中，所述曲轴包括依次连接的主轴段、偏心轴段以及副轴段，所述主轴段、所述偏心轴段以及所述副轴段的至少其中之一的侧壁设有织构。本申请的技术方案，可以改善曲轴磨损情况，提升旋转式压缩机性能和可靠性，并降低压缩机的摩擦损失，提高制冷效率。