冰箱夜间静音模式及控制技术研究

Research on silent mode and control technology of refrigerator at night

风冷冰箱蒸发器化霜通常是通过加热丝加热,使蒸发器上的冰融化为水排出至蒸发皿进行蒸发,化霜后为了使冰箱间室快速回温,压缩机、风机通常以最高转速运行,压缩机、风机高转速运行声音相比正常运行时的声音大很多,这种声音在用户休息的晚上,很容易被用户感知,直接影响用户睡眠。因此,需要调整压缩机、风机高转速出现的时间,避开用户休息时间段。首先智能识别用户休息时间段,然后进入静音模式,通过主控板的控制逻辑,调整压缩机、风机的转速以及高频运转出现的时间,最终达成冰箱夜间静音的目的。

Defrosting of air-cooled refrigerator evaporator is heated by heating wire to melt the ice on the evaporator into water, which is discharged to the evaporating dish for evaporation. After defrosting, in order to make the refrigerator room warm quickly, the compressor and fan usually run at the highest speed. The sound of compressor and fan running at high speed is much louder than that of normal operation. This kind of sound is easy to be perceived by the user at night when the user is resting, which directly affects the user’s sleep. Therefore, it is necessary to adjust the time of high speed of compressor and fan to avoid the rest period of users. First of all, the user’s rest period is intelligently identified, and then the silence mode is entered. Through the control logic of the main control board, the rotation speed of the compressor and fan and the time of high frequency operation are adjusted, so as to achieve the purpose of refrigerator night silence.