Quick-freezing plate for refrigerator, refrigerator and control method for refrigerator

Abstract

The invention relates to a quick-freezing tray for a refrigerator, the refrigerator and a control method of the refrigerator. Specifically, the quick-freezing tray comprises a tray assembly, an air duct opening and closing device and an article position detection device. The tray assembly defines a plurality of cold air ducts, and each cold air duct is positioned under the upper tray and configured for allowing entered cold air to pass through, so that the cold air transfers cold capacity to an article stored in the upper tray through the upper tray; the air duct opening and closing device isprovided with a plurality of air door blocking pieces, and each air door blocking piece is configured to be controlled to be opened and closed so as to turn on and turn off the corresponding cold airduct; and the article position detection device is configured to detect the position of the article in the upper tray so that one or more air door blocking pieces corresponding to one or more cold airducts below the article position can be opened, and therefore the one or more cold air ducts below the article position communicate to allow the cold air to pass through. According to the quick-freezing tray for the refrigerator, the refrigerator and the control method of the refrigerator, by determining the position of the article, the cold capacity is capable of flowing from the vicinity of thearticle as much as possible, the high-speed cooling efficiency is improved, the waste of the cold capacity is avoided, and energy is saved.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to a quick-freezing tray for a refrigerator, a refrigerator and a control method for the refrigerator. Background technique [0002] As we all know, whether the food is refrigerated, frozen or thawed, if the speed can be accelerated, it can greatly reduce the damage of food surface cells and the loss of nutrients, and keep the food fresh. At present, in direct cooling refrigerators, when food is refrigerated or frozen in the refrigerator, the cooling energy is mainly transferred by the natural flow of air. The food preservation time is short, and the loss of water and nutrients is serious. In an air-cooled refrigerator, cold air is usually used to quickly freeze the items in the quick-freezing tray. However, direct cooling with cold air can easily take away a large amount of moisture on the surface or inside of the item, resulting in loss of moisture and nutrients, and a dec...

AI Technical Summary

Problems solved by technology

However, the disadvantage of the existing quick-freezing plate solution is that it cannot be made too large. If it is too large, the cost of a whole block of aluminum is too high, and the other is too heavy, so it is inconvenient to handle; the existing metal plate solution is mostly made of stainless steel stamping. It is placed at the bottom of the drawer. The disadvantage is that when the large surface of the metal plate exchanges heat with the cold air, the plastic drawer is separated, resulting in a decrease in the heat exchange rate.

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