Preservation device

Abstract

The invention discloses a preservation device. The preservation device comprises a box, a temperature detection device for detecting the temperature of the box, a refrigerating system for lowering thetemperature in the box, an electrostatic field device for emitting an electrostatic field to a food material placing position and a controller for starting the electrostatic field device and adjusting the refrigerating amount of the refrigerating system to lower the temperature in the box to a preset temperature range step by step when the box is closed. According to the preservation device, theelectrostatic field can be emitted to the food material placing position through the electrostatic field device, transformation of water molecules to a gathered state from a dispersed state can be restrained, and thus the freezing point of food can be lowered. The controller adjusts the refrigerating amount of the refrigerating system, the temperature in the box is lowered to the preset temperature range step by step, the temperature in the box is maintained higher than the freezing point of the food and lower than 0 DEG C and is small in fluctuation, microbial metabolism can be restrained ata higher degree compared with common cold storage under the unfreezing condition, the self-respiratory metabolism rate of the food can be reduced, the nutritional ingredients of the food can be reserved, the edible quality of the food can be improved, and the storage life of the food can be prolonged.

Description

technical field [0001] The invention relates to the field of food preservation, in particular to a preservation device. Background technique [0002] There are various ways to keep food fresh, such as adding preservatives to lower the freezing point, so as to keep fresh, but the preservatives used in this fresh-keeping method will affect the color, aroma and flavor of the food itself, and the remaining preservatives after storage It may also be detrimental to human health. There is also a combination of electrostatic field fresh-keeping method and high-oxygen modified packaging for fresh-keeping storage of chilled meat, but this kind of fresh-keeping method needs to use air-modified film and also needs to be filled with oxygen in the actual operation process. Package to ensure good airtightness, which has very high technical requirements for operators and is not easy to achieve. Contents of the invention [0003] The present invention proposes a fresh-keeping device in o...

AI Technical Summary

Problems solved by technology

[0002] There are various ways to keep food fresh, such as adding preservatives to lower the freezing point, so as to keep fresh, but the preservatives used in this fresh-keeping method will affect the color, aroma and flavor of the food itself, and the remaining preservatives after storage It may also be detrimental to human health

There is also a combination of electrostatic field fresh-keeping method and high-oxygen modified packaging for fresh-keeping storage of chilled meat, but this kind of fresh-keeping method needs to use air-modified film and also needs to be filled with oxygen in the actual operation process. package to ensure good airtightness, which requires very high technical requirements for operators and is not easy to achieve

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