One of the main parts of refrigeration compressors is the automatic valve system used to control the suction and discharge processes. Experimental studies of these processes in the compressor environment are complex because the small size of the compressor. Thus, experimental analysis in enlarged valve models is useful for improving the understanding of the flow characteristics. This work consists of an experimental investigation into the fluid–structure interaction problem due to the flow acting on the valve surfaces in enlarged reed type valves, aimed at evaluating the influence of the valve-seat gap on the dynamic behavior of the valve. The instantaneous position of the valve was measured by using an optical sensor for flows with Reynolds number based in the orifice inlet parameters varying from about 2000 to 19,000. It was found that even a small valve-seat gap significantly influences the dynamic behavior of the valve. An abrupt increase in the amplitude of the valve displacement occurs in a narrow range of Reynolds number due to flutter. For lower stiffness valves, this phenomenon occurs for Reynolds numbers varying from about 6000 to 8000. For higher stiffness valves, it occurs for Reynolds numbers varying from about 2000 to 3000. When the valve is assembled without a gap, the amplitude increases monotonically, without the appearance of flutter. The article also presents how these results are useful to validate computational codes typically employed to investigate fluid–structure interaction problems in reed type valves, especially because the valve-seat gap is required in most computational codes.

制冷压缩机的主要部件之一是用于控制吸入和排出过程的自动阀系统。由于压缩机尺寸小，因此在压缩机环境中进行这些过程的实验研究非常复杂。因此，在扩大的阀门模型中进行实验分析对于提高对流动特性的理解很有用。这项工作包括对由于流体作用于扩大的簧片型阀中的阀表面而引起的流固耦合问题的实验研究，旨在评估阀座间隙对阀动态性能的影响。通过使用光学传感器来测量阀的瞬时位置，该光学传感器具有基于孔口入口参数在大约2000到19,000之间变化的雷诺数的流量。发现即使很小的阀座间隙也会显着影响阀的动态性能。由于颤动，在雷诺数的狭窄范围内发生阀位移幅度的突然增加。对于较低刚度的阀，此现象发生在雷诺数从大约6000到8000之间变化的情况。对于较高刚度的阀，此现象发生在雷诺数在大约2000到3000之间变化的情况下。当阀没有间隙地组装时，振幅单调增加，而没有间隙。颤动的外观。本文还介绍了这些结果如何用于验证通常用于研究簧片型阀中的流固耦合问题的计算代码，尤其是因为大多数计算代码中都需要阀座间隙。