The utility model relates to a piston refrigeration compressor, comprising a piston body (1), a piston cavity (2) and pin hole (3), which is characterized in that the piston cavity (2) of the long side surface is a concave circular arc surface. By using the piston refrigeration compressor of this structure, due to the long side of the inner cavity of the piston surface is a concave circular arc surface, so when the piston is running, long side connecting rod and the piston cavity surface reduces the contact area, and effectively reduce the friction and collision between each other, so that the noise reduction process of compressor.
【技术实现步骤摘要】
【技术保护点】
一种制冷压缩机用活塞,它包括活塞体(1)、活塞内腔(2)和销孔(3),其特征在于:所述的活塞内腔(2)的长边面(2.1)为内凹圆弧面。
【技术特征摘要】
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