Cooling air blowing device of refrigerator

Abstract

A cooling air blowing apparatus of a refrigerator includes: a driving motor fixed at a motor mound formed at a rear side of a freezing chamber; a blowing fan mounted at a rotational shaft of the driving motor and blowing cooling air in a suction direction along the axis direction and blowing cooling air in a suction direction along a radial direction, while being rotated as the driving motor is driven; and a shroud positioned in a circumferential direction of the blowing fan. The blowing fan for blowing cooling air into the cooling chamber and the freezing chamber includes a turbo blade for blowing cooling air in a radial direction of the direction in which cooling air is blown in addition to the axial flow blade for blowing cooling air in an axial direction of the direction in which cooling air is blown, to supply cooling air into the freezing chamber and the cooling air chamber. Thus, in the complicated and long cooling air passage structure, cooling air can be circulated smoothly and quickly.

Description

technical field [0001] The present invention relates to a cooling air blowing device for a refrigerator, and more particularly, to a cooling air blowing device for a refrigerator, which can improve refrigerator efficiency and reduce noise by increasing air flow. Background technique [0002] A refrigerator usually includes a freezer for storing frozen foods and a cold room for storing frozen foods. There is also a refrigeration system in the refrigerator, which can provide cooling air to the freezer and the cold room. [0003] The capacity of the refrigerator is becoming larger and larger. In order to keep the food fresh for a long time, it is necessary to keep the temperature inside the refrigerator uniform. For this reason, the method that adopts is to emit cooling air from several grill holes of the refrigerator, but the passage of cooling air often must be long and complicated like this, could lead the cooling air to each direction of the refrigerator. [0004] figure ...

AI Technical Summary

Problems solved by technology

[0022] However, if the diameter of the axial flow fan is increased, the size of the refrigerator will also increase, and the noise will also be generated accordingly.

At the same time, if the speed is increased, the quality of the refrigerator will also decrease due to the increased noise.

[0023] Especially in long-term running refrigerators, when the heat exchanger is frosted, the noise will be loud, and at the same time the air volume will be reduced, resulting in poor freshness of the food stored in the refrigerator

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