Air supply device for refrigerating and freezing device and refrigerating and freezing device

Abstract

The invention provides an air supply device for a refrigerating and freezing device and the refrigerating and freezing device. The air supply device comprises a peripheral wall, a plurality of ventilation openings are formed in the peripheral wall, and the air supply device further comprises a shielding part, a transmission device and a reset device; the shielding part is rotatably arranged in the peripheral wall around the axis of the peripheral wall, and the shielding part comprises a shielding plate or a plurality of shielding plates which synchronously rotate; the shielding plate is movably arranged in the radial direction of the peripheral wall, the transmission device is configured to enable the shielding plate to move towards the peripheral wall at least in the process that the shielding plate rotates from one rotating position to the rotating position where one or more ventilation openings are shielded, and the shielding plate abuts against the peripheral wall when the shielding plate is at the rotating position where one or more ventilation openings are shielded. And the transmission device and the reset device are arranged, so that each baffle plate and the peripheral wall are arranged at an interval in the rotating process, and the rotating resistance is small. When the ventilation opening is shielded, effective shielding is carried out, air leakage is reduced and prevented, and the air supply efficiency is improved. And the intelligence degree is high.

Description

technical field [0001] The invention relates to the technical field of household appliance refrigeration and storage, in particular to an air supply device and a refrigeration and freezing device used for a refrigeration and freezing device. Background technique [0002] With the continuous development of society and the continuous improvement of people's living standards, people's life rhythm is getting faster and faster, so they are more and more willing to buy a lot of food and put them in the refrigerator. All kinds of refrigerators have become indispensable household appliances in people's daily life. one. The existing freezer storage compartment of the refrigerator has two or more layers of storage drawers, and the entire freezer compartment is connected without being separated. When the user places / takes food in a certain layer or multi-layer drawers, the compartment sensor detects temperature fluctuations, and the main control board of the refrigerator controls the ...

AI Technical Summary

Problems solved by technology

Existing refrigerators cannot supply air on demand, and there is a problem of energy waste: when placing / retrieving food in a certain layer of drawers, the entire room will be supplied with air, and it cannot be realized that only the air is supplied to the area that needs to be cooled, and there is a waste of energy; When placing / retrieving food in the drawers, some drawers have dropped to the set temperature, while the freezer compartment is still in the mode of air supply to the entire compartment, resulting in energy waste

Existing refrigerators have long cooling time and poor freshness preservation effect: after the fan specification and air duct structure are determined, the air supply to the entire room at the same time is compared with the independent air supply scheme, and the air volume and wind speed of the air outlets in the same area are compared with independent air supply. The plan should be small, and the temperature of the compartment or food will be cooled slightly slower. For example, the time for meat to pass through the ice crystal belt will be longer, the juice will be lost more, and the freshness preservation effect will be slightly worse.

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