液体食品连续通电加热装置

摘要

为实现液体食品的通电加热,结合整流逆变技术设计了液体食品连续通电加热装置,系统由可控脉冲电源、加热室、液泵和流量控制4部分组成.可控脉冲电源输出双极性高频方波脉冲电压,频率、电压和占空比可调,输出功率可达50 kW.实验证明,该装置加热速度快、控制简单方便、极板污染很少,能够满足液体食品的加工要求.%In order to achieve ohmic heating for liquid food, by using rectifier and inverter technology, continuous ohmic heating device was designed. The equipment was consisted of controllable pulsed power supply, ohmic heating chamber, pump and flow controller. Controllable pulsed power supply can output bipolar-rectangle waveform pulse voltage with high frequency. The frequency, amplitude and duty ratio were adjustable. The output capacity could reach to 50 kW. The result showed that the device could be controlled speedily and easily. It could meet the requirement of liquid food process and without pollution.