Refrigerator cooling capacity control method, device and refrigerator

Abstract

The embodiment of the invention provides a refrigerator refrigerating capacity control method and device and a refrigerator and belongs to the field of household appliances. The method comprises the following steps of determining the accumulated starting time TKN of a compressor of the refrigerator in the first N operating cycles and the total time TN of the first N operating cycles in the N+1 operating cycle of the compressor of the refrigerator; calculating an average starting rate N according to the accumulated starting time TKN of the compressor in the first N operating cycles and the total time TN in the first N operating cycles; and comparing the average starting rate n with a predetermined starting rate n1, and adjusting the operating stroke of a compressor piston according to comparison results to control the refrigerating capacity of the refrigerator. The refrigerator refrigerating capacity control method and device and the refrigerator are suitable for electronic refrigerators, mechanical refrigerators and computer refrigerators with program control, the application range is very wide, the refrigerator can always be in a relatively ideal operation state, the loss of starting and stopping the compressor can be effectively reduced, and the temperature fluctuation in the refrigerator can be reduced.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a method and device for controlling the cooling capacity of a refrigerator and a refrigerator. Background technique [0002] At present, due to the requirement of energy saving, many frequency conversion refrigerators have appeared on the market. The principle of frequency conversion refrigerators is to change the power supply frequency of the compressor through the frequency conversion board, thereby adjusting the speed of the compressor. After the speed of the compressor changes, its unit time Compression and the amount of discharged gaseous refrigerant changes, so that the flow rate of the refrigerant in the refrigerator refrigeration system changes, and the effect of changing the cooling capacity of the refrigerator is realized. When this kind of frequency conversion refrigerator operates at low frequency, the cooling capacity is small, and when it is operated at high freq...

AI Technical Summary

Problems solved by technology

These control programs for controlling frequency changes are suitable for electric-controlled refrigerators, and these frequency changes are designed in advance. If the frequency changes that are not within the design range occur during the actual use of the refrigerator, problems and loopholes are prone to occur in the program control, which is reliable. Poor performance, and it is impossible to achieve energy saving in the whole environment of the refrigerator

More importantly, these control programs cannot be implemented for simple electronic refrigerators or mechanical refrigerators.

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