Supercooling freezing method and freezing device
A freezing method and technology of a freezing device, which are applied in cooling fluid circulation devices, household refrigeration devices, coolers, etc., can solve problems such as poor freezing quality and shorten freezing time, and achieve the effect of ensuring freezing quality and improving freezing quality.
Active Publication Date: 2020-08-11
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, resulting in loss of juice, food quality decline. 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. Th...
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The invention discloses a supercooling freezing method and a freezing device. The supercooling freezing method includes the following steps that in the pre-cooling stage, a to-be-frozen object is cooled to the first freezing point approaching temperature T2; in the supercooling stage, the to-be-frozen object is cooled to the second freezing point temperature T4; in the quick-freezing cooling stage, the to-be-frozen object is cooled to the freezing temperature T6 lower than the second freezing point temperature T4; and different energy fields are applied to a freezing chamber where the to-be-frozen object is located in at least two adjacent cooling stages, a transition stage is set between the two adjacent cooling stages applying the different energy fields, and no energy fields are appliedin the transition stage. According to the supercooling freezing method and the freezing device, the different energy fields are applied to the to-be-frozen object in the different cooling stages, sothat the freezing time of the object can be shortened, and the freezing quality can be improved obviously.
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