应用于精密空调加湿罐电磁除垢装置关键技术的研究

发布时间：2018-03-30 02:26

本文选题：空调加湿罐　切入点：电磁除垢　出处：《安徽工业大学》2016年硕士论文

【摘要】：精密空调是针对现代电子设备机房设计的专用空调,它的工作精度和可靠度都要比普通的空调高的多。空调加湿罐是精密空调的重要组成部分,由于其工作原理和工作环境导致加湿罐的内部极易行成厚厚的水垢,严重的影响加湿效果和精密空调的使用寿命。化学除垢方法无法安全有效的去除水垢,本文引用物理除垢方法中的电磁除垢法。针对传统的电磁除垢装置具有功率小,电磁转换效率差以及输出频率范围小的缺点,设计了基于串联谐振原理的大功率绕线式电磁除垢装置。本文首先对电磁转换电路进行设计,通过全桥逆变电路产生高频双极性脉冲馈入RLC电路。通过理论推导和仿真,证明了在谐振电感上可以形成高频交变的电磁场用于电磁除垢。再对空调加湿罐的材料特性进行分析,并利用有限元分析法分析不同材料对电磁场的分布特性影响,确定了应用于精密空调加湿罐的绕线式电磁除垢装置理论基础。其次对大功率直流稳压电源进行设计,作为串联谐振的双极性脉冲源的直流馈入,并对电路中的元器件参数进行分析。为了获得高频的双极性脉冲,对电力开关管进行比较并分析电力MOSFET在高频状态下的开关特性,设计相应的高频驱动放大模块。通过实验验证了驱动放大模块确实能够实时有效的驱动MOSFET并且具有很好的高频特性,其最大工作频率可以达到1MHz。再次根据串联谐振电路发生谐振时的电路参数特性,基于MC9S12XS128单片机应用模块设计扫频程序,通过对反馈回的电流参数进行比较可以迅速准确的检测出电路谐振频率,使绕线式电磁除垢装置电磁转换效率达到最大。最后利用设计出的工程样机进行多组对照实验,确定绕线式电磁除垢装置针对PVC材料的精密空调加湿罐确实具有良好的阻垢、除垢效果。同时确定针对空调加湿罐除垢的最优应用频率以及最佳工作时间。
[Abstract]:Precision air conditioning is a special air conditioning system designed for modern electronic equipment rooms. Its working precision and reliability are much higher than those of ordinary air conditioners. Air conditioning humidifiers are an important part of precision air conditioning. Because of its working principle and working environment, the humidifying tank is easy to form a thick scale inside, which seriously affects the humidification effect and the service life of the precision air conditioner. The chemical scale removal method can not remove the scale safely and effectively. In this paper, the electromagnetic scaling method is used in the physical scale removal method. The traditional electromagnetic scale removal device has the disadvantages of low power, low electromagnetic conversion efficiency and small output frequency range. A high power winding electromagnetic scale removing device based on series resonance principle is designed. Firstly, the electromagnetic conversion circuit is designed. The high frequency bipolar pulse fed into the RLC circuit is generated by the full-bridge inverter circuit, and the theoretical derivation and simulation are carried out. It is proved that a high frequency alternating electromagnetic field can be formed on the resonant inductor for electromagnetic scale removal. The material characteristics of the air conditioning humidifying tank are analyzed, and the influence of different materials on the distribution of electromagnetic field is analyzed by using finite element analysis. The theoretical basis of the winding electromagnetic scale removing device used in the precision air conditioning humidifying tank is determined. Secondly, the high power DC stabilized voltage supply is designed as the DC feed in the series resonant bipolar pulse source. In order to obtain the high frequency bipolar pulse, the power switch is compared and the switching characteristics of the power MOSFET in the high frequency state are analyzed. Design the corresponding high frequency drive amplifier module. The experiment results show that the driver amplifier module can drive MOSFET in real time and has good high frequency characteristic. The maximum operating frequency can reach 1 MHz. Thirdly, according to the characteristics of the circuit parameters when the series resonant circuit occurs, the frequency sweeping program is designed based on the MC9S12XS128 single chip microcomputer application module. By comparing the feedback current parameters, the resonant frequency of the circuit can be detected quickly and accurately, and the electromagnetic conversion efficiency of the winding electromagnetic scale removal device can be maximized. It is determined that the precision air conditioning humidifying tank with winding electromagnetic descaling device for PVC material does have good scale inhibition and scale removal effect, and the optimum application frequency and working time are also determined for the air conditioning humidifying tank.
【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TB657.2

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