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Food processing method and device

A food processing and food technology, applied in the direction of food electrical processing, milking equipment, dairy products, etc., to achieve the effect of low voltage, low profile, and reduced electron energy flow state

Pending Publication Date: 2021-11-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, the main idea adopted in the existing public literature is to control the pressure gradient from the food surface to the electron source. Although the pressure gradient in the processing area and the acceleration area is reduced to a certain extent, the above bottleneck problem cannot be solved fundamentally.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A food processing method, comprising the steps of:

[0070] In the first step, about 5×10 -3 The low pressure environment of Pa, the manufacturing average field strength is about 2×10 6 V / m free electron accelerating electric field, the manufacturing average field strength is about 8×10 5 The free electron collision process of V / m modulates the electric field, and in the electric field modulation during the free electron collision process, the normal pressure condition of the food is maintained. Under the above conditions, the cathode material obtains the Joule heat of the external circuit as the cathode of the field emission excitation circuit. Under the action of the electric field, the electrons escape from the surface of the cathode material and enter the low-pressure environment to become free electrons, adjusting the field of the free electron acceleration electric field Strong, according to calculations, the energy obtained by the acceleration of free electrons...

Embodiment 2

[0076] A free electronic food purification device, including the following components: low-energy electron source 01, deployment control component 02, electric field regulation function structure 03, food carrying component 04, wherein,

[0077] The low-energy electron source 01 includes a free electron emission structure 011, a multi-level field emission electron window 012, a vacuum packaging structure 013,

[0078] There is a gap of 1 mm between the free electron emission structure 011 and the multi-level field emission electron window 012, which is maintained by a perforated quartz round platform. The vacuum packaging structure 013 is assembled from a dielectric material cavity and a flange plate, with a diameter of about 32 mm, the gap between the free electron emission source 011 and the field emission electron window 012 is achieved and maintained by a mechanical pump and a molecular pump to form a 1×10 -3 The low pressure environment of Pa,

[0079] The free electron ...

Embodiment 3

[0091] A free electronic food purification device, including the following components: low-energy electron source 01, deployment control component 02, electric field regulation function structure 03, food carrying component 04, wherein,

[0092] The low-energy electron source 01 includes a free electron emission structure 011, a multi-level field emission electron window 012, a vacuum packaging structure 013,

[0093] There is a gap of about 10 mm between the free electron emission structure 011 and the multi-level field emission electron window 012, which is maintained by a perforated quartz round platform. The vacuum packaging structure 013 is formed by welding a ceramic cavity with a Kovar alloy and a metal packaging plate, with a diameter of About 32 mm, the gap formation between the free electron emission source 011 and the field emission electron window 012 is achieved and maintained by the getter below 1×10 -3 Pa low pressure environment,

[0094] The free electron emi...

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Abstract

The invention discloses a food processing method and device. The method includes emitting free electrons; generating a free electron accelerating electric field to accelerate the emitted free electrons; generating a free electron collision process modulation electric field, controlling part of free electrons to interact with gas molecules in the modulation electric field to generate a collision ionization process, and generating collision ionization free electrons; and controlling the free electrons and the collision ionization free electrons to jointly act on the food surface. The energy requirement when free electrons penetrate through a high-vacuum area and a normal-pressure atmosphere interface where food is located is lowered through the field emission process, effective penetration of low-energy free electrons can be achieved through the graded and regional structural design, and furthermore, an accelerating electric field of the peripheral area of the food is constructed and the air pressure is adjusted. According to the invention, the problem that high-energy electrons destroy nutrient substances in an electron beam food processing technology is solved, the problems of more byproducts and complex application conditions are solved, and meanwhile, food purification and preservation controllability are realized.

Description

technical field [0001] The invention belongs to the fields of food disinfection technology, vacuum electron technology, gas electron technology, plasma technology, electron beam technology and the like, and specifically relates to a food processing method and device. Background technique [0002] In vacuum electron technology and gas electron technology, free electrons are important functional particles, while electron beam technology is a widely used practical technology. In the field of food disinfection, electron beam technology has been extensively studied and applied to some extent. Its core technical elements include two parts: electron source, electron beam energy-beam spot control system. For liquid food and most solid food containing water, high vacuum environment (10 -4 The vacuum level above Pa) cannot or is extremely difficult to maintain, and the generation of free electrons and the regulation of dynamic characteristics require a high vacuum environment. In or...

Claims

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Application Information

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IPC IPC(8): A23L5/20A23C7/04A23L5/30H05H1/46
CPCA23L5/20A23L5/30A23C7/04H05H1/46A23V2002/00A23V2300/12
Inventor 侯中宇丁衡高房茂波
Owner SHANGHAI JIAO TONG UNIV
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