旁通预混结构对铸铝加热体即热热水器的性能影响研究  

Research on the performance influence of bypass premixed structure on cast aluminum heating element electric instantaneous water heater

作　　者：刘志强 张伟 矫佳利[1,2] 张宇菲 王广岭 常永超 LIU Zhiqiang;ZHANG Wei;JIAO Jiali;ZHANG Yufei;WANG Guangling;CHANG Yongchao(Qingdao Economic and Technological Development Zone Haier water heater Co.,Ltd.,Qingdao 266101;National Engineering Research Center of Digital Home Networking,Qingdao 266100)

机构地区：[1]青岛经济技术开发区海尔热水器有限公司,山东青岛266101 [2]数字家庭网络国家工程研究中心,山东青岛266000

出　　处：《家电科技》2025年第1期14-19,共6页Journal of Appliance Science & Technology

摘　　要：针对目前即热式铸铝加热体停水温升高,出水稳定性差的问题,通过建立CFD模型研究了2 mm、3 mm及4 mm旁通管径与1弯管结构及3弯管结构下的加热体加热速度、停水温升、旁通管内流量,加热体温度场等不同性能参数。研究结果表明,加热体增加旁通预混装置可以有效降低加热体停水温升,提升用户洗浴体验,但增加旁通预混结构会提升加热体表面温度、增加加热体加热速度。另外,研究发现减小旁通管径比更改旁通弯管结构对管内流量变化的影响更为明显。In response to the current problem of high closed water temperature and poor user experience in instantaneous heating aluminum casting heating elements,a CFD model was established to study different performance parameters such as heating speed,closed water temperature rise,flow rate inside the bypass tube,and heating temperature field of the heating element under 2 mm,3 mm,and 4 mm bypass tube diameters and 1 and 3 bend tube structures.The results of the study show that adding a bypass premix device to the heating element can effectively reduce the temperature rise of the heating element and improve the user's bathing experience.However,adding a bypass premix device will increase the surface temperature of the heating element and increase the heating speed of the heating element.In addition,it was found that reducing the diameter of the bypass pipe has a more significant impact on the flow rate changes inside the pipe than changing the structure of the bypass bend.

关 键 词：即热式电热水器 铸铝加热体 旁通预混结构 加热体性能 

分 类 号：TM925[电气工程—电力电子与电力传动] TB6[一般工业技术—制冷工程]