Control method for improving starting performance of air cooling refrigerator compressor

Abstract

The invention provides a control method for improving the starting performance of an air cooling refrigerator compressor. The control method comprises the following steps that S1, after the refrigerator is powered on, a fan is started when the temperature of a defrosting sensor is larger than a set value; S2, the compressor and the fan operate, the operating time T1, the temperature of the defrosting sensor and the environment temperature are collected; S3, if the rising speed of the defrosting sensor is slow or the rising speed of a chamber temperature sensor is slow, the compressor operatesnormally, the fan stops working until the rising speed of the defrosting sensor becomes fast or the rising speed of the chamber temperature sensor becomes fast; and S4, if the rising speed of the defrosting sensor is fast or the rising speed of the chamber temperature sensor is fast, the compressor operates normally, the fan works normally until the rising speed of the defrosting sensor becomes slow or the rising speed of the chamber temperature sensor becomes slow. According to the method, the winding temperature in the starting operation process of the compressor is reduced, so that the success rate of normal operation of the compressor is improved.

Description

technical field [0001] The invention relates to the field of refrigerators and refrigeration products, and provides a control method for improving the start-up performance of an air-cooled refrigerator compressor. Background technique [0002] In the corporate standards of most air-cooled refrigerator manufacturers, in order to avoid the problem that the compressor cannot be started due to voltage instability during the actual use of the refrigerator by the user, the air-cooled product is required to be tested during the start-up performance test. At 38°C (product climate type ST) or 43°C (product climate type T) ambient temperature, voltage 187V or 264V, the product stands still at 38°C (product climate type ST) or 43°C (product climate type T) ambient temperature Until the temperature in the box is consistent with the ambient temperature, the compressor can work normally after power on. [0003] The above start-up performance test can largely guarantee the normal use of t...

AI Technical Summary

Problems solved by technology

However, due to the forced transfer of the cooling capacity generated after the compressor is running, the temperature of the evaporator of the refrigerator will decrease slowly, the pressure of the system will increase, the operating power of the refrigerator will increase, and the winding temperature of the motor coil in the compressor will increase. When the winding temperature reaches a certain value, the compressor will be forced to stop for protection, so even if the same compressor as the direct cooling refrigerator is used, the success rate of normal operation after power-on on the air-cooled refrigerator will be significantly reduced

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