制冷压缩机绪论1.ppt

制冷压缩机 主讲 张晓青 刘扬娟 第一章 绪论 制冷系统和热泵系统的异同 热泵系统 分类 制冷压缩机的发展概况 往复式压缩机Reciprocating Compressor 排气过程 动画片 往复式压缩机工作过程 压缩过程 过压缩（动压） 排气过程 膨胀过程 动画片 特点和趋势 滚动转子式压缩机 滚动转子式压缩机的工作过程 特点与发展趋势 摆转式压缩机 螺杆式压缩机 双螺杆式压缩机的工作过程 HITACHI Screw Compressor 日立 特点： 单螺杆压缩机 单螺杆式压缩机的工作过程 工作过程 容量调节100% 容量调节70 容量调节0% 动画片 涡旋式压缩机 Scroll Compressor  卧式涡旋压缩机日立公司 立式 涡旋式压缩机的工作过程 工作过程 滑片式压缩机 Sliding Vane Compressor 全封闭式 全封闭式压缩机的剖视图 半封闭式 半封闭式压缩机的剖视图 开启式 开启式压缩机的剖视图 CFCs 和HCFCs的替代 2. 危害性指标 3. 替代时间表 3. 替代工质 4.工质替代对制冷压缩机的影响 53-31 与吸气口相通 53-32 53-33 Unique state of the art design: Compact, simple and robust construction Lack of valves or critical reciprocating components increases resistance to liquid slugging and ensures maximum reliability Very low bearing load, well-balanced axial and radial forces by symmetrical compression with a single rotor and 2 idle turning gate rotors Durable polymer gate rotors eliminate friction and significantly reduce wear and energy losses No oil pump necessary – compressor screw is cooled and sealed of compressor by liquid refrigerant injection, resulting in a constant working temperature throughout an extended working life and allowing reduced rotor clearance for accurate and efficient compression Very low vibration levels, resulting in less wear and low operating sound level (silencer incorporated within compressor)  特点： DAIKIN 53-34 图5－7 全封闭涡旋压缩机 1-吸气管 2-排气口 3-静涡旋盘 4-动涡旋盘 5-背压腔 6-电动机 7-曲轴 8-十字联接环 53-35 吸气 排气 HITACHI horizontal scroll compressor for refrigeration application ，1988，as the worlds first.? Using R-22 refrigerant the compressor has an extended cooling range from -45°C to +5°C.? 用于冷藏、冷冻柜 53-36 ?????????????? The HITACHI Scroll Compressor is used in low temperature applications, such as in the cryogenics industry. 53-37 Daikin R-407C refrigerant hermetic scroll compressors for Smaller Daikin chillers 53-38 ?????????????????????????????????????????????? 53-39 Important features include: Compact Size： Compact, simp