Defrosting control method for inverter refrigerator

A technology of frequency conversion refrigerator and control method, which is applied in the direction of defrosting, household refrigeration equipment, lighting and heating equipment, etc., and can solve the problems of defrosting and not taking into account the particularity of frequency conversion refrigerators, etc.

Active Publication Date: 2012-10-24
CHANGHONG MEILING CO LTD
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  • Abstract
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Problems solved by technology

This method of defrosting control is based on empirical speculation that letting the refrigerator defrost "on schedule" instead of "on demand" defrost according to the established pattern may result in unnecessary defrosting when the refrigeration performance of the refrigerator is still good
Another new type of defrosting control method, as disclosed in Chinese patent application CN102297565A, uses the difference between the evaporation temperature and the freezing chamber temperature to monitor the heat transfer performance to achieve "on-demand" defrosting, but this method does not take into account frequency conversion The particularity of the refrigerator, the difference in the frequency conversion speed directly affects the change of the temperature difference

Method used

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  • Defrosting control method for inverter refrigerator
  • Defrosting control method for inverter refrigerator
  • Defrosting control method for inverter refrigerator

Examples

Experimental program
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Embodiment

[0023] Example: see figure 1 curve diagram,

[0024] The available speeds of frequency conversion refrigerators include S1, S2, S3, S4, S5...Sn, given different speeds and different ambient temperatures, the corresponding limit temperature difference △T of the evaporator temperature sensor and the temperature sensor in the compartment; the frequency conversion refrigerator operates at Under the state of rotating speed Si, the relationship between the limit temperature difference △T and the ambient temperature Th is as follows:

[0025] ΔT = Ai ( Th a ) ΔT = Bi * Th + Ci ( ...

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Abstract

The invention discloses a defrosting control method for an inverter refrigerator. According to the rotation speed of the inverter refrigerator, an evaporator temperature sensor, an indoor temperature sensor and an environmental temperature sensor, refrigerator controller software is used for detection and judgment, defrosting starting time is accurately determined, the defrosting process is timely finished, and the purposes of effective defrosting, preservation and energy consumption reduction are achieved.

Description

Technical field: [0001] The invention relates to a defrosting control method for a frequency conversion refrigerator. Background technique: [0002] During the actual operation of the refrigerator, the water vapor in the air encounters the low-temperature surface of the evaporator, and frost will appear. The formation of frost has a great influence on the heat transfer performance of the evaporator and the pressure drop on the air side. If defrosting is not done in time, the refrigeration performance of the refrigerator will continue to decline. [0003] The existing defrosting control method for frost-free refrigerators generally adopts the "time-temperature method", that is, given a preset defrosting interval time, after comprehensive factors such as door opening and closing, ambient temperature, humidity, and continuous running time of the compressor, Constantly revise the defrosting interval time, and enter the defrosting program when the accumulative running time of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D29/00F25D21/08
Inventor 白连社魏邦福李子胜杨帆马长州
Owner CHANGHONG MEILING CO LTD
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