近年来,汽车上的制冷和空调设备已有了较大的发展。一般的小车、面包车和重型汽车上都装有空调,机械制冷汽车广泛使用。目前汽车上的制冷方式全部是蒸汽压缩式,由于制冷的动力直接来源于发动机,压缩机一般做成开启式。但是,作为汽车制冷设备发展动向之一的制冷压缩机,正在向高运转性能和可靠性高、体积小、重量轻和低噪声方向迈进。 In recent years, the automobile refrigeration and air conditioning equipment has been a greater development. General cars, vans and heavy vehicles are equipped with air conditioners, mechanical refrigeration vehicles are widely used. Currently on the car all the refrigeration system is steam compression, the cooling power directly from the engine, the compressor is generally made open. However, as one of the development trends of the automobile refrigeration equipment, the refrigeration compressor is moving towards high running performance and high reliability, small size, light weight and low noise.