Breakdown protection device for sterilization of high-voltage pulse electric filed

Abstract

The invention discloses a breakdown protection device for sterilization of a high-voltage pulse electric filed. A power management circuit is connected with a precision reference voltage circuit, a Hall current sensor circuit, a high-speed voltage comparator circuit, a buzzer driving circuit and a high-voltage pulse capacitor discharge circuit respectively and is used for supplying power, and the high-speed voltage comparator circuit is connected with the precision reference voltage circuit, the Hall current sensor circuit, the buzzer driving circuit and the high-voltage pulse capacitor discharge circuit respectively. By the breakdown protection device, the current size in a main loop of a pulse generator can be monitored in real time, the circuit is timely cut off, the device is prevented from being damaged by large current, and the breakdown protection device has the characteristics of high voltage resistance and high interference resistant capability, and can rapidly respond.

Description

technical field [0001] The invention relates to a breakdown protection device, in particular to a breakdown protection device for high-voltage pulse electric field sterilization. Background technique [0002] As a new type of non-thermal processing technology, high-voltage pulsed electric field (PEF) technology has become a research hotspot in the food processing industry in recent years due to its advantages of low temperature rise, high efficiency, and ability to maintain food flavor, especially for milk, juice, and rice wine. And other liquid food sterilization. The basic principle of high-voltage pulse electric field sterilization is to generate instantaneous high-voltage pulses between two electrodes, which act on the liquid food to be processed in the processing chamber. Kill microorganisms such as bacteria. [0003] At present, high-voltage pulsed electric field technology is widely used in the sterilization of liquid food, such as fruit juice, egg wine, etc. In th...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-voltage pulse electric field generator breakdown protection device for sterilization of liquid food. When the instantaneous current of the circuit breaks down in the processing chamber is too large, the protection device quickly responds and sends an overcurrent signal to the system controller. Make the equipment shut down in time to solve the problem of equipment damage due to excessive instantaneous current in the circuit during breakdown

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