某温差电致冷系统散热器的改进设计

Improving Design on the Radiator of X Thermoelectric Frigorific System

为解决某温差电致冷系统散热器存在的,轴流风机只有在断电的情况下其保护器才发出故障报警信号的问题,介绍罩极式单相异步电动机的结构特点和转速测量的常用方法。然后通过一些试验数据,讨论采用相位角测量和提取轴流风机工作电流、供电电压来确定其转速的方法。最后结合100FZY2-S型轴流风机的具体情况,给出新型断风保护器的电路原理和工作过程。

In this paper, for solving the problem which the protector sends a fault-alarm signal no other than the cooling fan power off, the characteristics of shaded pole motor and generic methods about rotating speed measurement are introduced. For fixing on rotating speed of the cooling fan, implement method that depends on measuring phase angle, or current and voltage are discussed. Combined with the type of 100FZY2-S cooling fan, the principle of new protector is presented.