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公开(公告)号:US20030172666A1
公开(公告)日:2003-09-18
申请号:US10386672
申请日:2003-03-13
IPC分类号: F25B007/00 , F25B041/00 , F25B049/00
CPC分类号: F25B1/10 , F04C18/356 , F04C23/001 , F04C28/02 , F04C28/26 , F04C2210/261 , F25B9/008 , F25B47/022 , F25B2309/061 , F25B2341/066 , F25B2400/0401 , F25B2500/29 , F25B2600/2501
摘要: In a multistage rotary compressor using a refrigerant such as carbon dioxide (CO2) and the like which becomes high in a discharge pressure, operating efficiency thereof can be enhanced by appropriately setting the ratio between displacement of the respective rotary compression elements and the areas of discharge ports thereof. In the multistage rotary compressor comprising an electric element in a hermetic shell case, and first and second rotary compression elements which are driven by the electric element, wherein a refrigerant which is compressed and discharged by the first rotary compression element is drawn into and compressed by the second rotary compression element and discharged thereby, wherein the ratio of S2/S1 is set to be smaller than ratio of V2/V1, where S1 is an area of a discharge port of the first rotary compression element, S2 is an area of a discharge port of the second rotary compression element, V1 is displacement of the first rotary compression element, and V2 is displacement of the second rotary compression element.
摘要翻译: 在使用排出压力高的二氧化碳(CO 2)等制冷剂的多级旋转式压缩机中,通过适当设定各旋转压缩元件的排量与排出面积之比可以提高其运行效率 的港口。 在包括密闭壳体中的电气元件的多级旋转压缩机以及由电气元件驱动的第一和第二旋转压缩元件,其中由第一旋转压缩元件压缩和排出的制冷剂被吸入并被 所述第二旋转压缩元件被排出,其中S2 / S1的比率被设定为小于V2 / V1的比,其中S1是第一旋转压缩元件的排出口的面积,S2是 第二旋转压缩元件的排出口V1是第一旋转压缩元件的位移,V2是第二旋转压缩元件的位移。