家电科技 ›› 2021, Vol. 0 ›› Issue (zk): 2-4.doi: 10.19784/j.cnki.issn1672-0172.2021.99.001

• 第一部分 优秀论文 •    下一篇

基于冷凝热的除霜技术在多联机中的实验研究

代传民1,2, 劳春峰1,2, 魏伟1,2, 马长鸣1,2, 滕兆龙1,2, 孙萍1,2   

  1. 1.青岛海尔智能技术研发有限公司 山东青岛 266013;
    2.数字化家电国家重点实验室 山东青岛 266013
  • 出版日期:2021-11-25 发布日期:2021-12-22
  • 作者简介:代传民,男,学位:硕士。研究方向:空调冷热超前相关技术研究。E-mail:daichuanmin@haier.com。

Experimental study of multi-split air conditioner on technology of condensation heat defrosting

DAI Chuanmin1,2, LAO Chunfeng1,2, WEI Wei1,2, MA Changming1,2, TENG Zhaolong1,2, SUN Ping1,2   

  1. 1. Qingdao Haier Smart Technology R&D Co., Ltd. Qingdao 266103;
    2. State Key Laboratory of Digital Household Appliances Qingdao 266103
  • Online:2021-11-25 Published:2021-12-22

摘要: 冬季制热场景下,空气源产品存在因室外换热器除霜而导致室内定期停止制热现象,引起室内温度降低,用户体验差,因此提高除霜运行时室内用户的舒适体性验,成为空气源热泵面临的重要课题。通过对家用多联机系统进行重新设计:将室外换热器划分为两个部分,通过控制制冷剂的饱和温度,利用制冷剂冷凝热,实现对室外换热器进行有效的交替除霜。实验证明:1.在除霜饱和温度Td为2℃~8℃时可用最少的制冷剂流量实现有效除霜;2.在室外2℃条件下,冷凝热除霜运行中的平均制热能力为额定能力的75%。

关键词: 除霜, 连续制热, 冷凝热, 制冷剂压力, 换热器

Abstract: In the winter heating scenario, air source products often stop heating due to the defrosting of outdoor heat exchanger, which leads to the decrease of indoor temperature and poor user experience. Therefore, improving the comfort of indoor users during defrosting operation has become an important subject for air source heat pump. Outdoor heat exchanger is divided into two parts. By controlling the saturation temperature of the refrigerant and using the latent heat of the refrigerant, the effective alternate defrosting technology of heat exchanger is developed. The experimental results show that: 1. Effective defrosting is achieved with the lowest refrigerant flow at a defrost saturation temperature from 2℃ to 8℃. 2. Under the outdoor condition of 2℃, the average heating capacity of latent heat defrosting is 75% of the rated capacity.

Key words: Defrost, Continuous heating, Condensation heat, Refrigerant pressure, Heat exchanger

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