Model for Carried Out Liquid Fraction from Accumulator of Compressor Used in Room Air-Conditioners

Liao Jiansheng; Yan Ziteng; Zhan Feilong; Ding Guoliang; Zheng Liyu

doi:10.12465/issn.0253-4339.20241021001

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Model for Carried Out Liquid Fraction from Accumulator of Compressor Used in Room Air-Conditioners

更新时间：2026-03-30

- Model for Carried Out Liquid Fraction from Accumulator of Compressor Used in Room Air-Conditioners
- Journal of Refrigeration Vol. 47, Issue 2, Pages: 123-131(2026)
- 作者机构：
  
  1.上海交通大学制冷与低温工程研究所上海 200240
  2. 广东美芝制冷设备有限公司佛山 528300
- 作者简介：
- 基金信息：
  
  the National Key Research and Development Program of China(2023YFC3806404)
- DOI：10.12465/issn.0253-4339.20241021001
  CLC： TB61⁺1;TB652;TB657.2
- CSTR：XXXXX.XX.XXX.20241021001
- Received：21 October 2024，
  
  Revised：2024-11-18，
  
  Accepted：09 December 2024，
  
  Published：16 April 2026
- 稿件说明：
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廖健生,燕子腾,詹飞龙等.家用空调压缩机储液器出口带液量预测模型[J].制冷学报,2026,47(02):123-131.

Liao Jiansheng,Yan Ziteng,Zhan Feilong,et al.Model for Carried Out Liquid Fraction from Accumulator of Compressor Used in Room Air-Conditioners[J].Journal of Refrigeration,2026,47(02):123-131.
廖健生,燕子腾,詹飞龙等.家用空调压缩机储液器出口带液量预测模型[J].制冷学报,2026,47(02):123-131. DOI： 10.12465/issn.0253-4339.20241021001. CSTR： XXXXX.XX.XXX.20241021001.

Liao Jiansheng,Yan Ziteng,Zhan Feilong,et al.Model for Carried Out Liquid Fraction from Accumulator of Compressor Used in Room Air-Conditioners[J].Journal of Refrigeration,2026,47(02):123-131. DOI： 10.12465/issn.0253-4339.20241021001. CSTR： XXXXX.XX.XXX.20241021001.

摘要

为了避免家用空调器中储液器出口带液量过高或过低会引起压缩机“液击”或缺油的问题，需要将储液器出口的带液量控制在合理范围，这就需要有准确预测储液器出口带液量的方法。研究目的是提出储液器出口带液量的预测模型，并对模型进行实验验证。通过将储液器内制冷剂-润滑油混合物的流动过程划分为气液相区状态变化子过程、气液相间传质子过程、进口管喷射流动子过程和出口管汇合流动子过程4个子过程，并对这4个子过程分别建立数学模型，来构建储液器出口带液量预测模型；再通过开发基于向后差分法的模型求解算法，来求解该出口带液量预测模型。搭建了储液器出口带液量实验台，利用实验数据对模型精度进行了验证，结果表明出口带液量百分比的模型计算值与实验值的差值在3%以内，平均偏差为0.7%。利用提出的储液器数学模型可对储液器的回油孔结构参数进行优化设计，从而为降低压缩机“液击”或缺油的风险提供理论指导。

Abstract

To prevent issues such as liquid hammer or oil starvation resulting from excessive or insufficient liquid carried from the accumulator in air conditioner compressors， controlling the liquid mass within reasonable limits is essential. This requires an accurate prediction method for evaluating the liquid carryover. The purpose of this study is to develop a model to predict the mass of liquid carried from an accumulator and to validate this model experimentally. The flow process of the refrigerant-oil mixture is divided into four subprocesses： vapor-liquid phase change， vapor-liquid interphase mass transfer， inlet tube injection flow， and outlet tube convergence flow. Four submodels are established to describe these subprocesses， and an algorithm based on the backward difference method is developed to solve them. An experimental apparatus is set up to measure the liquid carryover from the accumulator. The experimental results show that the deviation between the model predictions and experimental values is within ±3%， with an average deviation of 0.7%. The proposed accumulator model can be used to design the structural parameters of the oil return hole， avoiding liquid hammer and oil starvation in compressors.

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references

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