Natural defrosting method for air-cooled refrigerator

An air-cooled refrigerator, naturalized technology, applied in the field of energy-saving defrosting of air-cooled refrigerators, can solve the problem of high energy consumption, and achieve the effects of reducing defrosting energy consumption, reducing energy consumption, and high-efficiency defrosting control

Inactive Publication Date: 2015-08-26
HENAN XINFEI ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the current defrosting devices all use electric heating tubes, generally with a power of 100W-280W, so the frequency and time of defrosting are factors that affect energy consumption, making the performance of existing air-cooled refrigerators when defrosting high power consumption

Method used

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Embodiment Construction

[0017] Air-cooled refrigerator natural defrosting method of the present invention is carried out according to the following steps:

[0018] The first step is that after the accumulative running time of the compressor reaches TDFTACC hours, the electric control device of the refrigerator controls the refrigerator to enter the second step, which is the defrosting preparation step;

[0019] Among them, TDFTACC is the accumulative running time of one cycle of the compressor preset before the refrigerator leaves the factory (the user cannot adjust it), and its value range is 4.5≤TDFTACC≤15 hours;

[0020] The second step is the defrosting preparation step;

[0021] If the refrigerating damper is open at this time, the damper will continue to open until the refrigerating room temperature difference is lower than the cooling direction and reaches the THROFF zone; the THROFF zone is the preset refrigerating damper closing temperature zone before the refrigerator leaves the factory, an...

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Abstract

The invention discloses a natural defrosting method for an air-cooled refrigerator. The natural defrosting method comprises the following steps: after the cumulative running time of a compressor reaches TDFTACC h, an electrical control device of a refrigerator controls the refrigerator to enter the second step (defrosting preparation step); preparing for defrosting; performing defrosting in the way that a refrigeration air door and a refrigerating blower are simultaneously switched on and switched off after working for t min, and then electrical heating is started for defrosting. According to the natural defrosting method for the air-cooled refrigerator, the conventional defrosting technique is adopted to realize fine adjustment of the defrosting process; within the energy-saving defrosting time, circulation of passing airflow is utilized, air in a refrigerating chamber can be utilized to defrost an evaporator, and meanwhile, the cold quantity of a frost layer at the evaporator is utilized to reduce the temperature of the refrigerating chamber, so that the energy-saving purpose is achieved; compared with the prior art, frequent defrosting is not needed, the energy consumption of electrical heating is reduced and the condensed frost can be radically defrosted.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an energy-saving defrosting method for an air-cooled refrigerator. Background technique [0002] Air-cooled refrigerators use the fan and air duct system inside the air-cooled refrigerator to blow cold air from the air outlet to the inside of the box to freeze and refrigerate food. As the air circulates, hot air and water vapor are sucked into the return air duct, and when passing through the evaporator, they freeze on the surface of the evaporator to form a frost layer, so that the frost inside the box can be removed. [0003] However, the frost layer condensed on the evaporator will affect the cooling performance and even block the air circulation. On the contrary, it will cause the temperature of the box to rise, affect the cooling effect, and increase energy consumption. Therefore, it is necessary to defrost the evaporator. [0004] The existing defrosting technology i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D29/00F25D21/08
CPCF25D21/08F25D21/002F25D21/06
Inventor 王鸿海李开元何晖
Owner HENAN XINFEI ELECTRICAL EQUIP
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