针对涡旋压缩机压缩腔室间存在压差问题，本文提出了一种动涡旋盘齿头沉槽压力平衡结构。首先，推导齿头沉槽型线控制方程，基于动静涡盘啮合运动关系确定沉槽几何边界；而后，基于微元法建立涡旋齿厚强度解析数学模型，研究动态气体激励力下齿头沉槽构型的承载特性；进而，开展齿头沉槽型线参数优化设计，得到最佳排气口结构参数，实现压缩腔室间压差控制。结果表明，涡旋齿头构型与排气孔是压缩腔室压力不平衡现象的主要诱因；获取了沉槽深度、沉槽宽度、排气孔径参数的最优组合，在保证涡旋齿头强度的情况下，实现了压缩腔室压力不平衡控制；研究结果可为涡旋压缩机压缩腔室间压力不平衡控制提供理论依据。

To address the pressure differential issue between compression chambers in scroll compressors, this paper proposes a tooth head recess pressure balancing configuration for the orbiting scroll. First, the type profile control equation for the tooth head recess is derived, and the recess’s geometric boundaries are determined based on the meshing motion relationship between the orbiting and fixed scrolls. Subsequently, an analytical mathematical model for scroll tooth thickness strength is established using the infinitesimal element method to investigate the load-bearing characteristics of the tooth head recess configuration under dynamic pressure excitation. Furthermore, parametric optimization design of the tooth head recess profile is conducted to obtain optimal exhaust port structural parameters, achieving pressure differential control between compression chambers. Results indicate that the scroll tooth head configuration and exhaust holes are the primary contributing factors to pressure imbalance phenomena in compression chambers; the optimal combination of recess depth, recess width, and exhaust hole diameter parameters is obtained, realizing pressure imbalance control in compression chambers while ensuring scroll tooth head strength; the findings provide theoretical basis for controlling pressure imbalance between compression chambers in scroll compressors.