Defrosting control method for frost-free refrigerator

A control method and defrosting technology, which is applied in defrosting, household refrigeration equipment, household appliances, etc., and can solve the problems of defrosting time control and other problems

Inactive Publication Date: 2009-03-11
ELECTROLUX CHINA HOME APPLIANCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Defrosting control method for frost-free refrigerator
  • Defrosting control method for frost-free refrigerator

Examples

Experimental program
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Embodiment Construction

[0027] The objects in this example are frost-free refrigerators such as figure 1 , the figure includes refrigerating room 1, intermediate room 2, freezing room 3, refrigerating room sensor 4, DTT5, evaporator 6, heater 7, compressor 8.

[0028] In this implementation, the defrosting control process is as follows: figure 2 . During the control process, two modules are used to judge whether the refrigerator needs defrosting. Module 1 calculates in real time the accumulative running time of the compressor and the accumulative door opening time of the refrigerator in this defrosting cycle, and judges whether the defrosting condition is met through formula calculation. Module 2 judges whether defrosting is required by detecting the temperature of the sensor in the refrigerator. If it is detected that the temperature of the refrigerating room cannot be controlled normally and continues to rise, and the influence of other factors is excluded, and the abnormality is only caused by ...

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Abstract

The invention relates to a defrosting control method, in particular to a defrosting control method used for frost-free refrigerators. The technical proposal adopted by the invention is that: in the control process, whether the refrigerator needs to be defrosted is judged by two modules; a module 1 judges whether defrosting condition is reached by real-time calculating accumulated running time t1 of a compressor and accumulated opening time t2 of a refrigerating chamber in the defrosting period and by the calculation according to a formula (t1 plus 144 multiplied by t2 is more than or equal to 108000), the time unit is second, and when t1 is more than a certain value or meets the formula, the refrigerator enters the defrosting procedure; a module 2 judges whether defrosting is needed by detecting the temperature of a sensor of the refrigerating chamber, if that the temperature of the refrigerating chamber can not be controlled normally is detected, the temperature is increased continuously and the influence of other factors is excluded, the refrigerator enters defrosting. The defrosting control method provided by the invention can carry out defrosting operation to the refrigerator, has thorough defrosting and saves energy.

Description

technical field [0001] The invention relates to a defrosting control method, in particular to a defrosting control method for a frost-free refrigerator. Background technique [0002] The parameters used to control defrosting in existing frost-free refrigerators generally include cumulative power-on time, cumulative compressor running time and cumulative door opening time, defrosting sensor temperature, cabinet temperature and compressor operating rate, etc. Some are timing defrosting, that is, defrosting is fixed after the compressor is running for a period of time or powered on for a period of time; some are comprehensively controlling the defrosting according to the two parameters of the accumulated compressor running time and the accumulated door opening time; Whether the temperature inside the body is normal or not and the power-on rate of the compressor are used to control the defrosting cycle and defrosting time, etc. These control methods cannot fully reflect the seve...

Claims

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Application Information

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IPC IPC(8): F25D21/02F25D29/00
Inventor 钟金华
Owner ELECTROLUX CHINA HOME APPLIANCE
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