Fruit and vegetable preservation device based on nanosecond pulse low-voltage electric field

Abstract

The invention discloses a fruit and vegetable preservation device based on a nanosecond pulse low-voltage electric field. The fruit and vegetable preservation device comprises a treatment chamber anda nanosecond pulse electric field generating device, wherein the treatment chamber comprises a closed cavity, a box body with an open top and an upper cover arranged at the open top of the box body, the upper cover contains a copper sheet protecting path, the box body matches with the upper cover by virtue of a positioning assembly, and an electromagnetic device, the copper sheet protecting path and a work indicating lamp form a safety protection device together; and the nanosecond pulse electric field generating device comprises a nanosecond pulse power with adjustable parameters and a multichannel dual electrode sealed in an insulating barrier, and the multichannel dual electrode is connected with an electrode outgoing post. The electric field generating device forms a nanosecond pulse electric field in the box body, and fruits and vegetables are put in the nanosecond pulse electric field for performing electric field treatment, thereby achieving an enzyme inactivating effect by changing the inherent electric fields of the fruits and vegetables, inhibiting the respiratory action of the fruits and vegetables and achieving a good cold sterilization effect. The fruit and vegetable preservation device based on the nanosecond pulse low-voltage electric field has a convenient operation method, is pollution-free and suitable for preserving various perishable fruits and vegetables and has very high application value.

Description

technical field [0001] The invention belongs to the technical field of fruit and vegetable preservation, and in particular relates to a fruit and vegetable preservation device based on a nanosecond pulse low-voltage electric field. Background technique [0002] To prolong the fresh-keeping period of fruits and vegetables, find ways to kill microorganisms or inhibit their activity and inactivate enzymes. Microorganisms on the surface of fruits and vegetables can cause the decay of fruits and vegetables and affect the quality of fruits and vegetables. So far, there are still many problems unsolved in the traditional fresh-keeping methods of fruits and vegetables. Physical fresh-keeping methods such as modified atmosphere fresh-keeping and decompression fresh-keeping methods require a large investment and high fresh-keeping costs; chemical fresh-keeping methods will cause corresponding chemical poisons to remain in the fruit. , the current biological preservation method is uns...

AI Technical Summary

Problems solved by technology

[0004] Commonly used electric field fresh-keeping methods are DC high-voltage electric fields. For example, Chinese Patent Document No. CN201425398 discloses a household refrigerator with high-voltage electrostatic fresh-keeping technology, and Chinese Patent Document No. CN201210511487.0 discloses a high-voltage electrostatic fruit fresh-keeping device. The high-voltage electrostatic generator controller is connected with the conductive electrode plates to form a high-voltage electrostatic field between the plates. The DC high-voltage electrostatic field generated by it can keep fruits and vegetables fresh, but the disadvantage is that high voltage is required to achieve the required electric field strength for freshness preservation. , dangerous to the operator

Due to the influence of moisture in fruits and vegetables, under the action of DC voltage, the internal electric field of fruits and vegetables is very weak, which reduces the effect of the DC electric field

At the same time, fruits and vegetables are directly in contact with the electrode plate, which increases the possibility of pollution and wear of the electrode plate, shortens the service life, and due to the electrostatic effect of the exposed plate under direct current, small solid particles will be adsorbed on the positive electrode of the electrostatic field generator. Regularly clean the electrostatic field generator

[0005] Another example is the Chinese Patent Document No. CN20160003902.X, which discloses a fresh-keeping storage method for chilled meat and an electrostatic field fresh-keeping device for fresh-keeping. Although the electrodes are not in direct contact with the sample, they are also exposed, and there are also the above problems

At the same time, the device has a unipolar plate structure without a ground electrode, which makes the surrounding metal structure have a certain floating potential, which increases the risk. In addition, there is no retracting effect of the ground electrode, and it is assumed that infinity is used as the ground electrode, so that The electric field strength in the storage space is weakened, and the energy is scattered, which affects the preservation effect

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