Air cooling refrigerator, air channel assembly thereof, and control method thereof

Abstract

The invention discloses an air cooling refrigerator, an air channel assembly thereof, and a control method thereof, and relates to the technical field of refrigerators. The air channel assembly comprises an air channel front cover plate, an air channel rear cover and a fan unit. A blocking mechanism is installed on one surface of the air channel rear cover. The blocking mechanism comprises an airblocking door and a driving motor. The air blocking door is installed on one surface of the air channel rear cover in a sliding manner. The driving motor is fixed to one surface of the air blocking door. Guide racks are fixedly installed on two opposite sides of the air blocking door respectively. Driving gears engaged with the guide racks are arranged in two opposite ends of the air blocking doorrespectively. A driving gear is fixedly installed on an output shaft of the driving motor. According to the air cooling refrigerator, the air channel assembly thereof, and the control method thereof,the size of an air inlet is changed by arranging the air blocking mechanism, the quantity of heat entering the box body through heat convection is decreased, temperature rise during defrosting of a freezing chamber is lowered, the fresh-keeping effect of the refrigerator is improved, and the air cooling refrigerator, the air channel assembly thereof, and the control method thereof have high market promotion value.

Description

technical field [0001] The invention belongs to the technical field of refrigerators, and in particular relates to an air-cooled refrigerator, an air duct assembly and a control method thereof. Background technique [0002] Air-cooled refrigerators use fan forced convection to exchange heat between the hot air in the compartment and the evaporator, and condense the moisture in the cabinet on the evaporator. Therefore, after a long period of refrigeration, the air-cooled refrigerator needs to be defrosted to ensure cooling efficiency. It judges according to the running time, temperature sensor, etc., and uses the defrosting heater to heat the evaporator, and exits defrosting after reaching a certain temperature. [0003] The defrosting heater of existing air-cooled refrigerators is generally installed at the bottom of the evaporator. When heating, there are two main ways for heat to be transferred from the evaporator chamber to the freezer: (1) heat conduction, which is trans...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an air-cooled refrigerator and its air duct assembly and control method. By setting a blocking mechanism to change the size of the fan air inlet, the heat can be reduced into the inside of the box through thermal convection, thereby reducing the freezing temperature of the freezer. The temperature rise during frost improves the freshness preservation effect of the refrigerator, and solves the problem that the temperature of the freezer chamber of the existing freezer rises too high and is unfavorable to the storage of food in the freezer chamber

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