电子膨胀阀掺气超空化降噪优化

doi:10.19784/j.cnki.issn1672-0172.2021.99.063

家电科技 ›› 2021, Vol. 0 ›› Issue (zk): 266-270.doi: 10.19784/j.cnki.issn1672-0172.2021.99.063

• 第三部分噪声与振动控制 • 上一篇下一篇

电子膨胀阀掺气超空化降噪优化

刘诗岩, 刘益才, 张玙, 武立康, 龚赞

中南大学能源科学与工程学院湖南长沙 410083

出版日期:2021-11-25 发布日期:2021-12-22
通讯作者: 刘益才,E-mail：lyccsu@csu.edu.cn。
作者简介:刘诗岩,硕士研究生。研究方向：能源动力。地址：中南大学能源院。E-mail：384493091@qq.com。
基金资助:
国家自然科学基金资助项目（51776226）

Optimization of air-entrained supercavitation and noise reduction of electronic expansion valve

LIU Shiyan, LIU Yicai, ZHANG Yu, WU Likang, GONG Zan

School of Energy Science and Engineering, Central South University Changsha 410083

Online:2021-11-25 Published:2021-12-22

摘要/Abstract

摘要： 空调、冰箱等电器被认为是室内环境的噪声的主要来源,特别是制冷剂的流动产生的噪声。运用掺气超空化理论,对传统电子膨胀阀进行结构优化,通过加装旁通管将蒸发器入口处的制冷引入到电子膨胀阀出口进行掺气,形成超空化现象,提高制冷剂局部压力,有效地抑制两相流中气泡的破裂,对比分析了优化改进后制冷剂的流动状态、局部压力、湍动能及气相体积分数。综合各方面因素发现,改进后制冷剂的流动噪声降低了3.16 dB。说明掺气引起的超空化能够有效地抑制制冷剂的流动噪声,在一定程度上对工程设计具有重要意义。

关键词: 电子膨胀阀, 掺气超空化, 降噪优化

Abstract: Electrical appliances such as air conditioners and refrigerators were considered to be the main source of noise in the indoor environment, especially noise generated by the flow of refrigerant. Use the aerated supercavitation theory to optimize the structure of the traditional electronic expansion valve. The refrigeration at the inlet of the evaporator was introduced to the outlet of the electronic expansion valve through the installation of a bypass pipe to form supercavitation, increase the local pressure of the refrigerant, and effectively suppress the bursting of bubbles in the two-phase flow. The optimization was compared and analyzed. Improved refrigerant flow state, partial pressure, turbulent kinetic energy and gas phase volume fraction. Based on various factors, it was found that the flow noise of the improved refrigerant was reduced by 3.16 dB. It showed that supercavitation caused by aeration could effectively suppress the flow noise of refrigerant, which was of great significance to engineering design to a certain extent.

Key words: Electronic expansion valve, Aerated supercavitation, Noise reduction optimization

中图分类号:

TB53

刘诗岩, 刘益才, 张玙, 武立康, 龚赞. 电子膨胀阀掺气超空化降噪优化[J]. 家电科技, 2021, 0(zk): 266-270.

LIU Shiyan, LIU Yicai, ZHANG Yu, WU Likang, GONG Zan. Optimization of air-entrained supercavitation and noise reduction of electronic expansion valve[J]. Journal of Appliance Science & Technology, 2021, 0(zk): 266-270.

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电子膨胀阀掺气超空化降噪优化

Optimization of air-entrained supercavitation and noise reduction of electronic expansion valve

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