数据中心冷却系统制冷剂泵滚滑转子型线理论及性能研究

Rolling rotor profile theory and performance of refrigerant pump of cooling system for data center

为了解决数据中心冷却系统制冷剂泵中转子的磨损问题,设计一种新型滚滑转子型线,利用滚柱与内转子和外转子进行啮合,形成一种滚动形式的内啮合转子泵,研究滚滑转子型线的构建,推导制冷剂泵排量公式;分析滚柱半径、包角和偏心距的变化对滚滑转子几何结构、制冷剂泵排量、滚滑转子承受应力的影响。结果表明,随着滚柱半径的增大,制冷剂泵的排量略微减小,滚滑转子受到的最大应力先减小后增大;随着包角的增大,滚滑转子受到的最大应力逐渐增大;随着偏心距的增大,制冷剂泵的排量逐渐增大,但滚滑转子受到的最大应力逐渐增大。

In order to solve the wear problem of the rotor in refrigerant pump of cooling system in data center,a new rolling rotor profile is designed,and a rolling internal rotor pump is formed by engaging the roller with the inner rotor and the outer rotor.The construction of the rolling rotor profile is studied,and the displacement formula of the refrigerant pump is derived.The influence of roller radius,wrap angle and eccentricity on the geometrical structure of the rolling rotor,the displacement of the refrigerant pump and the stress of the rolling rotor are analyzed.The results show that with the increase of the roller radius,the displacement of the refrigerant pump decreases slightly and the maximum stress on the rolling rotor decreases first and then increases.With the increase of the wrap angle,the maximum stress on the rolling rotor increases gradu-ally.With the increase of eccentricity,the displacement of the refrigerant pump increases gradually,while the maximum stress on the rolling rotor increases gradually.