Air path system of refrigerator and refrigerator

Abstract

The invention discloses an air path system of a refrigerator. The air path system comprises an evaporator cavity. An evaporator and a fan assembly are arranged in the evaporator cavity from bottom to top. The upper portion of the evaporator cavity is connected with a refrigeration air inlet flue and a freezing air inlet flue. The lower portion of the evaporator cavity is connected with a refrigeration return air flue and a freezing return air flue. The ends, close to the evaporator cavity, of the refrigeration air inlet flue and the freezing air inlet flue are inlet ends. The inlet end of the refrigeration air inlet flue and the inlet end of the freezing air inlet flue intersect, and an air inlet door is arranged at the intersection of the inlet ends of the refrigeration air inlet flue and the freezing air inlet flue. The air inlet door can be rotatably switched to close the refrigeration air inlet flue or close the freezing air inlet flue. The end, close to the evaporator cavity, of the freezing return air flue is an outlet end. A return air door is arranged at the outlet end of the freezing return air flue. The air path system of the refrigerator has the advantages that the air inlet door can be rotated to conduct switching so as to close the refrigeration air inlet flue or close the freezing air inlet flue, so that the refrigerating efficiency is improved, and cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of refrigeration appliances, in particular to an air duct system of a refrigerator and the refrigerator. Background technique [0002] Generally, single-evaporator air-cooled refrigerators control the opening and closing of the refrigerating damper to make freezing and refrigerating reach the corresponding temperature. Since the freezing is also passively refrigerating during refrigerating and cooling, the evaporator temperature is low and the cooling efficiency is low. [0003] Usually, the way to improve efficiency is to change the single cycle into a multi-cycle refrigeration system, add refrigeration evaporators, refrigeration fans and other components, greatly increase the evaporation temperature during refrigeration and refrigeration, and reduce power consumption. However, due to the increase of fans and evaporators And other parts, the cost that needs to be added is higher. Contents of the invention...

AI Technical Summary

Problems solved by technology

[0002] Generally, the air-cooled refrigerator with single evaporator controls the switch of the refrigerating air door to make the freezing and refrigerating reach the corresponding temperature. Since the freezing is also passively refrigerating during refrigerating and cooling, the evaporator temperature is low and the cooling efficiency is low.

[0003] Usually, the way to improve efficiency is to change the single cycle into a multi-cycle refrigeration system, add refrigeration evaporators, refrigeration fans and other components, greatly increase the evaporation temperature during refrigeration and refrigeration, and reduce power consumption. However, due to the increase of fans and evaporators And other parts, the cost to be added is higher

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