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Defrosting control method of refrigerator

A control method and technology for refrigerators, applied in defrosting, refrigerators, refrigeration components, etc., can solve problems such as heat waste, and achieve the effects of reducing energy consumption, reducing load, and reducing impact

Active Publication Date: 2015-12-23
CHANGHONG MEILING CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] When the frost-free air-cooled refrigerators on the market defrost, most of them use the defrost heater to defrost. The temperature of the evaporator when the refrigerator enters the defrost is generally relatively low. And when the refrigerator just enters the defrosting, the temperature of the refrigerant without capillary throttling is about 50 degrees higher than that of the evaporator, and this part of the heat is wasted

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Embodiment Construction

[0024] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0025] see figure 1 , the present invention provides a refrigerator, the refrigeration system of which includes a frequency conversion compressor 1, an anti-condensation pipe 2, a condenser 3, a filter 4, a capillary tube 6, an evaporator 7 and a liquid storage A defrosting heater 9 is arranged on the evaporator 8 and the evaporator 7, and a defrosting branch is connected across the two ends of the capillary 6, and a solenoid valve 5 is arranged on the defrosting branch.

[0026] see figure 2 , the present invention also provides the defrosting control method of the refrigerator, comprising the following steps: ...

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Abstract

The invention discloses a defrosting control method of a refrigerator. The defrosting control method comprises the steps of switching the rotating speed of a variable-frequency compressor from a first rotating speed to a second rotating speed when the refrigerator satisfies a defrosting condition; after the variable-frequency compressor operates in the second rotating speed for a time period t1, starting an electromagnetic valve; after the electromagnetic valve is started for a time period t2, stopping the variable-frequency compressor; starting a defrosting heater, stopping the electromagnetic valve and restoring the rotating speed of the variable-frequency compressor from the second rotating speed to the original first rotating speed; and when a defrosting stopping condition is satisfied, stopping the defrosting heater, thereby finishing defrosting. Compared with the prior art, the defrosting control method is advantageous in that refrigerant heat which is not throttled by a capillary is used for performing defrosting on an evaporator before the defrosting heater is started, thereby preventing energy wastage; and furthermore because in-tube defrosting is used as the defrosting heating manner, a more obvious heating effect is realized, thereby reducing the load of the defrosting heater and reducing energy consumption in defrosting of the refrigerator.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a defrosting control method for a refrigerator. Background technique [0002] When the frost-free air-cooled refrigerators on the market defrost, most of them use the defrost heater to defrost. The temperature of the evaporator when the refrigerator enters the defrost is generally relatively low. The evaporator is heated and defrosted; and when the refrigerator just enters the defrost, the temperature of the refrigerant that has not been throttled by the capillary is about 50 degrees higher than that of the evaporator, and this part of the heat is wasted. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the prior art and provide a defrosting control method for a refrigerator. [0004] The present invention is achieved through the following technical solutions: [0005] A defrosting control method for a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D21/06F25D29/00F25B47/02
Inventor 尚殿波刘宏宇陈开松
Owner CHANGHONG MEILING CO LTD
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