Air-cooled variable-frequency multi-door refrigerator capable of working with low noise at night and control method thereof

Abstract

The invention relates to an air-cooled variable-frequency multi-door refrigerator capable of working with low noise work at night and a control method thereof. The refrigerator comprises a photosensitive input unit, a refrigerator door switch, an MCU (Multipoint Control Unit), a variable-frequency compressor driving unit, a variable-frequency compressor, a variable-speed fan driving unit, a variable-speed fan, a VALVE electromagnetic valve driving unit and a VALVE electromagnetic valve, wherein the MCU is provided with an analog-digital conversion part, a comparison part, a judgment part, a switching part and a timing part. A photosensitive sensor arranged on a display board can be used for sensing the environmental brightness of the refrigerator; differentiated intelligent control is carried out comprehensively through processing by MCU so as to determine a current environment is day or night; when the current environment is night, the variable-frequency compressor is operated at low speed; and when the current environment is day, the variable-frequency compressor is operated at high speed. On the premise of ensuring the performance of the refrigerator, the noise of the refrigerator is reduced to the maximum by the differentiated intelligent control so that a customer feels comfortable when using the refrigerator.

Description

technical field [0001] The invention relates to a household appliance, in particular to an air-cooled variable-frequency multi-door refrigerator working in the middle of the night with low noise and a control method thereof. Background technique [0002] Refrigerators, as household appliances, have become essential supplies for urban residents. However, due to the large population in my country and the small per capita housing area, the noise generated by refrigerators often affects people's rest and sleep. The noise of the refrigerator is mainly generated by the noise of the compressor. [0003] In order to reduce the noise of the refrigerator, especially when it is used at night, there are currently low-noise refrigerators that use photosensitive resistors to judge the day and night, so that the compressor runs at a low speed when the refrigerator is working at night, thereby reducing the noise of the refrigerator in the middle of the night. The noise caused by the high-s...

AI Technical Summary

Problems solved by technology

Although this method has improved the noise at night, the existing method for judging day and night is not accurate enough, and it can no longer satisfy the situation that many people have nightlife and need to use refrigerators at night.

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