Continuous flow magnetic induction electric field low-temperature sterilization device and method

Abstract

The invention discloses a continuous flow magnetic induction electric field low-temperature sterilization device and method, and belongs to the field of light industry. Sterilization treatment equipment in the continuous flow magnetic induction electric field low-temperature sterilization device comprises a magnetic core, a magnet exciting coil, a magnetic coupling tube, storage tubes and treatment chambers; the magnet exciting coil and the magnetic coupling tube are both wound on two sides of the magnetic core, and the magnet exciting coil is connected with a power supply; the sterilization treatment equipment is provided with two storage tubes and two treatment chambers, wherein the two storage tubes communicate through the magnetic coupling tube; and the two storage tubes correspondingly communicate with the two treatment chambers. The sterilization temperature of the device is within the range of 60-65 DEG C, and the sterilization temperature is low; the sterilization time is shorter than 1 min, and the sterilization time is short; a metal electrode is not needed, so that electrochemical pollution is avoided; moreover, as the sterilization temperature is low and the sterilization time is short, the taste of the food materials can be better preserved when the food materials are treated; and green, low-temperature and rapid sterilization of liquid foods, seasonings, traditional Chinese medicines and cosmetics can be realized.

Description

Technical field[0001]The invention relates to a continuous flow magnetic induction electric field low-temperature sterilization device and method, belonging to the field of light industry.Background technique[0002]At present, the traditional thermal sterilization technology in the industry is usually in the form of heat transfer. This method has low heat transfer efficiency and longer processing time, which will cause greater damage to some heat-sensitive nutrients in the material. However, in recent decades, various new types of internal heat sterilization technologies have emerged, such as ohmic heating and microwave heating.[0003]Ohmic heating is mainly used to apply a voltage across the material and use the reciprocating movement of ions in the material to heat. This method does not require the surface of the object to contact the heat source, but generates heat inside the material, so it can achieve the effect of rapid heating and heating The effect is relatively uniform; howev...

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Problems solved by technology

[0003] Ohmic heating mainly uses the reciprocating movement of ions in the material to heat by applying a voltage at both ends of the material. This method does not require the surface of the object to contact the heat source, but generates heat inside the material, so it can achieve rapid heating. The effect is also relatively uniform; however, since the electrode plate must be used, and the electrode plate is in direct contact with the material, during the heating process, the place close to the electrode plate is likely to cause an electrochemical reaction, resulting in corrosion of the electrode plate, thereby reducing the efficiency and quality of the treatment

Microwave heating technology uses electromagnetic waves for heating, but the heating rate of materials is slower than ohmic heating, and the heat distribution is uneven, so it is not widely used in the field of sterilization

[0004] Furthermore, the ultra-high temperature instantaneous sterilization time is short (usually 10s), but the temperature is high (135-150°C); while the traditional pasteurization temperature is relatively low (60-82°C) but the sterilization time is long (usually 30min); Ultra-high temperature instantaneous sterilization, traditional pasteurization or traditional heat treatment methods will affect the taste of food materials when processing food materials

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