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Overcooling freezing method, refrigerator and refrigerator control method

A freezing method and supercooling technology, applied in coolers, household refrigerators, cooling fluid circulation devices, etc., can solve the problems of high cost, high meat juice loss rate, and reduced practicability of refrigerators

Active Publication Date: 2020-01-10
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the refrigerator, frozen food is generally stored at -18°C or below. Frozen food such as pork and beef have the problem of thawing too long. If users are eager to cook, they usually use direct heating to thaw. Although it can be thawed in a short time in this way, the loss rate of meat juice is very high, and the nutritional value of food is greatly lost.
At present, there are refrigerators with instant freezing technology on the market, which create a supercooled state of food and freeze them rapidly, but the control is often complicated and expensive, which reduces the practicability of the refrigerator

Method used

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  • Overcooling freezing method, refrigerator and refrigerator control method
  • Overcooling freezing method, refrigerator and refrigerator control method
  • Overcooling freezing method, refrigerator and refrigerator control method

Examples

Experimental program
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Embodiment 1

[0044] This embodiment provides a refrigerator such as figure 1 , which are successively provided with a refrigerator compartment 1, a quick freezer compartment 2, and a freezer compartment 3 from top to bottom, wherein the quick freezer compartment 2 is used to supercool and freeze stored items. Using the sequential design of the temperature of the three compartments to decrease step by step, on the one hand, it is not easy to transfer odors, and on the other hand, it also saves energy.

[0045] In order to achieve better freezing quality of the quick freezing chamber 2, a first direct-cooling evaporator 21 is provided at the top, and a second direct-cooling evaporator 22 is provided at the bottom. In the different processes of supercooling and freezing, direct cooling evaporators in different positions are used to cool down the stored items in the quick freezing chamber.

[0046] The refrigerator compartment 1 is equipped with a fan 11 for air cooling, and the freezer compa...

Embodiment 2

[0052] Taking the above-mentioned refrigerator and the food stored therein as examples, an embodiment of a supercooling freezing method and a refrigerator and a refrigerator control method is provided, including the following stages and supercooling and freezing operations:

[0053] In the pre-cooling stage, the refrigeration system is started, and the first evaporator is used to cool down the fast freezing chamber, so that the temperature of the fast freezing chamber is lowered. After time t1, the temperature of the stored items is reduced to the third temperature T3 below the freezing point T1, but the stored items are not Freezing: This step can make the food that needs to be overcooled and frozen quickly enter the low temperature zone required for the supercooling process from the normal temperature state, and the food does not freeze. This cooling measure can not only ensure that the food can enter the supercooling process in the subsequent results, but also improve the ef...

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Abstract

The invention provides an overcooling freezing method, a refrigerator and a refrigerator control method. Direct-cooling-type evaporators are adopted, and the direct-cooling-type evaporators at different positions are controlled to work in different overcooling freezing processes. A top evaporator is used for reducing temperature, so that the temperature reducing conditions of food in a freezing room are as close as possible to natural convection, the situation that the temperature reducing rate is too high due to the fact that the food is in contact thermal conductance with a refrigerated evaporator or the food is too close to the refrigerated evaporator, and keeping the stability of the food overcooling state is facilitated. A bottom evaporator or both the top evaporator and the bottom evaporator are used for reducing temperature at a fast freezing stage of the food to ensure the food to be quickly frozen, ice crystals are smaller and more rounded, the frozen food can be cut with a knife and cooked immediately, the waste of time and loss of food nutritional value caused by the thawing process are avoided.

Description

technical field [0001] The invention relates to the technical field of freezing and fresh keeping, in particular to a supercooling and freezing method, a refrigerator and a refrigerator control method. Background technique [0002] In the refrigerator, frozen food is generally stored at -18°C or below. Frozen food such as pork and beef have the problem of thawing too long. If users are eager to cook, they usually use direct heating to thaw. Although this can be thawed in a short period of time, the juice loss rate of the meat is very high, and the nutritional value of the food is greatly lost. At present, there are refrigerators with instant freezing technology on the market, which create a supercooled state of food and freeze rapidly, but the control is often complicated and the cost is expensive, resulting in a reduction in the practicability of the refrigerator. Contents of the invention [0003] In view of this, the present invention provides a radiation heat exchange...

Claims

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Application Information

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IPC IPC(8): F25D29/00F25D11/02F25D19/00
CPCF25D11/022F25D19/00F25D29/00F25D2600/02
Inventor 杨虹齐方成韩鹏刘畅
Owner GREE ELECTRIC APPLIANCES INC
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