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公开(公告)号：US4261180A
公开(公告)日：1981-04-14
申请号：US974494
申请日：1978-12-29
CPC分类号： F25B41/062
摘要： About 1 to about 25% by weight of a liquid refrigerant is mixed into a refrigerant gas to be introduced into a screw compressor by suction on the basis of the refrigerant gas in a refrigerator comprising a screw compressor, a condenser, and an expansion valve and an evaporator connected to one another in series. A cooling effect as well as a sealing effect can be satisfactorily attained thereby.
摘要翻译： 约1至约25重量％的液体制冷剂被混合到制冷剂气体中，以通过在包括螺杆式压缩机，冷凝器和膨胀阀的制冷机中的制冷剂气体的吸入而被引入螺杆式压缩机，以及 蒸发器彼此串联连接。 可以令人满意地获得冷却效果以及密封效果。
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公开(公告)号：US4234296A
公开(公告)日：1980-11-18
申请号：US46025
申请日：1979-06-06
CPC分类号： F04C28/125
摘要： A screw compressor including a male rotor and a female rotor forming a pair, a rotor casing enclosing the pair of rotors and cooperating therewith to define a working chamber for compressing gas, a suction port and a discharge port formed in a suction cover and a discharge cover respectively provided to the rotor casing, a slide valve mounted at one part of the rotor casing for axial movement to return gas from the working chamber to the suction side of the compressor, a radial discharge port formed in the slide valve, and an axial discharge port formed in the discharge cover and smaller in size than the radial discharge port. The slide valve is formed therein with at least one gas flow passageway for communicating the working chamber with the discharge port only when the compressor operates in a controlled capacity mode.
摘要翻译： 一种螺杆式压缩机，其特征在于，包括：阳转子和形成一对的阴转子;转子壳体，其包围所述一对转子并与其配合配置以限定用于压缩气体的工作室，形成在吸入盖中的吸入口和排出口; 分别设置在转子壳体上的滑盖，安装在转子壳体的一部分的用于轴向移动以将气体从工作室返回到压缩机的吸入侧的滑阀，形成在滑阀中的径向排出口，以及轴向 排出口形成在排出盖中，并且尺寸小于径向排出口。 滑阀在其中形成有至少一个气流通道，用于仅当压缩机以受控容量模式运行时才将工作室与排出口连通。
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