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三十八:我国中小型活塞式制冷压缩机系列有哪几种型式?它的基本参数是什么?我国中小型活塞式制冷压缩机分为开启式、半封闭式与全封闭式三种型式的系列。开启式压缩机的特点是曲轴的传动端伸出曲轴箱外,通过联轴器或皮带轮和电动机相联接,因此曲轴伸出端处必须装有轴封,以免制冷剂向外泄漏。我国开启式活塞式制冷压缩机系列的基本参数见表1。为了克服开启式压缩机轴封的密封面磨损后会造成泄漏的弊病,结构上作了改进,
Thirty-eight: What type of small and medium-sized piston-compressor refrigeration series? What is its basic parameters? China’s small and medium-sized piston-type refrigerant compressor is divided into open, semi-closed and fully enclosed three types series. Open compressor features crankshaft drive end of the crankcase extends through the coupling or pulley and the motor connected to the crankshaft extension end must be equipped with a shaft seal to prevent refrigerant leakage to the outside. China’s open-piston refrigeration compressor series of basic parameters in Table 1. In order to overcome the disadvantage of leakage after the sealing surface of the open-type compressor shaft seal is worn, the structure is improved,