Three-cycle air-cooled refrigerator and its defrosting method

Abstract

The invention discloses a three-circulation air-cooled refrigerator. Various parameters such as a refrigerating fan running target time parameter LCFSJ are stored in an electric control device. The defrosting method includes a freezing chamber defrosting method, a cold chamber defrosting method and a variable temperature chamber defrosting method. The method for defrosting the freezer includes entering a defrosting preparation step, defrosting preparation step, entering defrosting step, defrosting step and exiting defrosting step. The three-cycle air-cooled refrigerator and its defrosting method of the present invention take into account various specific working conditions during the operation of the refrigerator, so that the defrosting control and the actual working conditions of the refrigerator can be finely matched, which not only ensures the defrosting effect, It also avoids defrosting when defrosting is not needed, avoids frequent defrosting, and avoids excessively turning on the defrosting electric heater, thereby saving energy and preventing the phenomenon that defrosting cannot be exited.

Description

technical field

[0001] The invention relates to an air-cooled refrigerator and a defrosting method for the air-cooled refrigerator. Background technique

[0002] The air-cooled refrigerator is called a frost-free refrigerator. The fan and air duct system inside the air-cooled refrigerator are used to blow cold air from the air outlet to the inside of the box to freeze and refrigerate food. As the air circulates, the hot air and water vapor are sucked into the return air duct. When the hot air passes through the evaporator, the water vapor freezes on the surface of the evaporator to form a frost layer, so that the frost inside the box can be removed. However, the frost layer condensed on the evaporator will affect the cooling performance, and even block the circulation of the air. On the contrary, it will cause the temperature of the box to rise, affect the cooling effect, and increase energy consumption. Whether it is a single-cycle, double-cycle or three-cycle refrigeratio...

Examples

Embodiment Construction

[0067] The three-cycle air-cooled refrigerator of the present invention includes a box body with a refrigerating room, a variable temperature constant and a freezing room, and an electric control device and a refrigeration system are arranged in the box body. Connected compressor, condenser, expansion valve and evaporator. The evaporators include freezer evaporators, refrigerator evaporators and variable room evaporators. The freezer evaporator is equipped with a freezing evaporation temperature sensor, and the refrigerator There is a refrigeration evaporation temperature sensor, and a variable temperature evaporation temperature sensor is installed at the evaporator of the variable temperature chamber; a refrigerator door switch is installed at the refrigerator door, a freezer door switch is installed at the freezer door, and a variable temperature door switch is installed at the variable temperature chamber door The refrigerating room is correspondingly equipped with a refrig...

technical field

[0001] The invention relates to an air-cooled refrigerator and a defrosting method for the air-cooled refrigerator. Background technique

[0002] The air-cooled refrigerator is called a frost-free refrigerator. The fan and air duct system inside the air-cooled refrigerator are used to blow cold air from the air outlet to the inside of the box to freeze and refrigerate food. As the air circulates, the hot air and water vapor are sucked into the return air duct. When the hot air passes through the evaporator, the water vapor freezes on the surface of the evaporator to form a frost layer, so that the frost inside the box can be removed. However, the frost layer condensed on the evaporator will affect the cooling performance, and even block the circulation of the air. On the contrary, it will cause the temperature of the box to rise, affect the cooling effect, and increase energy consumption. Whether it is a single-cycle, double-cycle or three-cycle refrigeratio...

Examples

Embodiment Construction

[0067] The three-cycle air-cooled refrigerator of the present invention includes a box body with a refrigerating room, a variable temperature constant and a freezing room, and an electric control device and a refrigeration system are arranged in the box body. Connected compressor, condenser, expansion valve and evaporator. The evaporators include freezer evaporators, refrigerator evaporators and variable room evaporators. The freezer evaporator is equipped with a freezing evaporation temperature sensor, and the refrigerator There is a refrigeration evaporation temperature sensor, and a variable temperature evaporation temperature sensor is installed at the evaporator of the variable temperature chamber; a refrigerator door switch is installed at the refrigerator door, a freezer door switch is installed at the freezer door, and a variable temperature door switch is installed at the variable temperature chamber door The refrigerating room is correspondingly equipped with a refrig...