摘要
设计了一种新型的智能恒温出水混水阀,推导建立了该恒温阀出口温水的流量模型及温度模型,并利用Fluent软件完成了对恒温阀内部冷热水混合情况进行了流场仿真分析,通过对仿真结果与模型计算结果的对比分析,证明了所推导建立的恒温阀数学模型的正确性。利用恒温阀试验样机开展了试验研究,来验证恒温阀的温度控制效果,试验结果表明,即使在恒温阀入口热水温度不断变化的条件下,通过控制器的智能自适应调节,也能维持恒温阀出口温水温度及流量的恒定,且实现温水恒温输出的响应时间约为7 s左右。
A new type of intelligent thermostatic mixing valve is designed and the flux model and temperature model of the valve is established. And the inner mixing flow field of hot water and cool water of the valve is simulated by using the Fluent software. By comparing the simulation results and those obtained directly from the mathematical model,the correctness of the mathematical model of thermostatic valve is proved. Finally, a prototype of thermostatic valve is tested to verify the effects of temperature control and flow control. The experimental results show that the valve can accurately maintain the temperature of outlet warm water and the flow rate of the thermostatic valve by self-adjusting with the intelligent controller,even though the temperature of inlet hot water varies continuously,and the response time of constant warm water outlet is about 7 seconds.
出处
《机械科学与技术》
CSCD
北大核心
2014年第12期1893-1896,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(50905083
51265034
61263045)
江西省科技支撑计划项目(20112BB550017)
江西省自然科学基金项目(20132BAB201040)资助
关键词
恒温阀
数学模型
Fluent仿真
试验
computational fluid dynamics
computer simulation
computer software
controllers
design
experiments
flow control
flow fields
flow rate
mathematical models
regression analysis
response time（computer systems）
stepping motors
temperature control
temperature distribution
thermostatic valve
valves（mechanical）
velocity distribution
