Supercooling freezing method and freezing device
A freezing method and freezing device technology, which can be applied to cooling fluid circulation devices, household refrigeration devices, coolers, etc., and can solve problems such as poor freezing quality and shortened freezing time
Active Publication Date: 2021-04-27
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0005] In order to solve the defect of poor freezing quality in the prior art, the present invention proposes a supercooling freezing method and a freezing device. The supercooling freezing method applies different energy fields to the items to be frozen in different cooling stages, which can not only shorten the freezing time of the items, but also Can significantly improve the quality of freezing
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[0026] During the freezing process, if the water molecules inside and outside the cells are not frozen at the same time, the osmotic pressure between the inside and outside of the cells will increase the concentration of the intracellular fluid and decrease the ice crystal point, resulting in larger and larger ice crystals in the intercellular space, so that Break food cells, cause juice loss, and reduce food quality. Therefore, the traditional freezing technology usually cools down the items to be frozen slowly, so that the water molecules inside and outside the cells freeze at the same time, but this process often takes a long time and consumes a lot of cooling capacity.
[0027] The time for frozen food to pass through the maximum ice crystal formation zone (-1°C - -5°C) can often determine the frozen quality of the food. The shorter the time for passing through the maximum ice crystal formation zone, the more damage the growing ice crystals will do to food cells. The small...
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The invention discloses a supercooling and freezing method and a freezing device. The supercooling and freezing method comprises: a pre-cooling and cooling stage, cooling items to be frozen to a temperature close to the first freezing point T2; Freezing point temperature T4; rapid freezing and cooling stage, cooling the item to be frozen to a freezing temperature T6 lower than the second freezing point temperature T4; at least two adjacent cooling stages apply different energies to the freezer where the item to be frozen is located There is a transition stage between two adjacent cooling stages with different energy fields applied, and no energy field is applied in the transition stage. By applying different energy fields to the items to be frozen in different cooling stages, the present invention can not only shorten the freezing time of the items, but also significantly improve the freezing quality.
Description
technical field [0001] The invention relates to the technical field of freezing and preservation, in particular to a supercooling freezing method and a freezing device for improving freezing quality. Background technique [0002] With the continuous improvement of living standards, refrigeration devices such as refrigerators are widely used in daily life. In order to improve the freezing quality of fresh fruits and vegetables and other items, a wide variety of freezing preservation methods have appeared in the prior art, such as patent application number 201510897316.X And the refrigerating and freezing device announced in 201521009944.1, by first reducing the temperature of the item to be frozen to the freezing temperature, and then applying a uniform magnetic field to the freezing compartment, the item to be frozen enters a supercooled state, and after a period of treatment, the uniform magnetic field is turned off. Destroy the supercooled state of frozen food, quickly red...
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IPC IPC(8): F25D11/00F25D23/12F25D29/00
CPCF25D11/00F25D23/12F25D29/00F25D2400/30
Inventor 王屋梁毛佳甜何丽娜刘畅韩鹏
Owner GREE ELECTRIC APPLIANCES INC