化工学报 ›› 2025, Vol. 76 ›› Issue (S1): 152-159.DOI: 10.11949/0438-1157.20241155

• 流体力学与传递现象 • 上一篇    

空调用套管式分流器结构设计及分流效果验证

燕子腾(), 詹飞龙, 丁国良()   

  1. 上海交通大学制冷与低温工程研究所,上海 200240
  • 收稿日期:2024-10-18 修回日期:2024-10-29 出版日期:2025-06-25 发布日期:2025-06-26
  • 通讯作者: 丁国良
  • 作者简介:燕子腾(1997—),男,博士研究生,ZitengYan@sjtu.edu.cn
  • 基金资助:
    国家重点研发计划项目(2023YFC3806404);宁波市科技计划项目(2022H002)

Structural design and effect verification of casing-type distributor used in air-conditioners

Ziteng YAN(), Feilong ZHAN, Guoliang DING()   

  1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2024-10-18 Revised:2024-10-29 Online:2025-06-25 Published:2025-06-26
  • Contact: Guoliang DING

摘要:

为了提高系统运行能效,制冷空调系统中采用分流器实现多路翅片管换热器内两相制冷剂的均匀分流。目前空调系统中采用的文丘里式分流器具有复杂的流道结构且需要多根毛细管作为配件,使得其成本均较高。提出一种新型套管式分流器,通过离散泡状流实现各流路干度的均匀分流,通过均压掺混和循环流动实现各流路流量的均匀分流。提出设计公式与模型对套管式分流器的关键结构参数进行设计,并通过实验验证了套管式分流器的分流效果。与传统文丘里式分流器相比,套管式分流器分流不均匀度降低18%,生产成本降低30%。

关键词: 流动, 气液两相流, 分流器, 翅片管换热器, 优化设计, 实验验证

Abstract:

In order to improve the energy efficiency of the system operation, air-conditioning systems use a distributor to achieve a uniform distribution of the two-phase refrigerant in the multi-channel fin-and-tube heat exchanger. The venturi-type distributor used in air-conditioning systems has a complex flow channel structure and requires multiple capillary tubes as fittings, which makes its cost high. In this paper, a new type of casing-type distributor is proposed to achieve uniform distribution of quality in each flow path by dispersed bubble flow, and to achieve uniform distribution of flow rate in each flow path by equal-pressure mixing and circulating. The design formula and model for the key structural parameters of the casing-type distributor are proposed and the distribution effect of the casing-type distributor is verified by experiments. Compared with the traditional venturi-type distributor, the unevenness of the casing-type distributor is reduced by 18%, and the production cost of the casing-type distributor is reduced by 30%.

Key words: flow, gas-liquid two-phase flow, distributor, fin-and-tube heat exchanger, optimal design, experimental validation

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