Refrigerator control method and control system using linear compressor

Abstract

The present invention discloses a refrigerator control method and control system using a linear compressor. The control method includes: monitoring the ambient temperature T of the refrigerator; comparing the ambient temperature T with a preset ambient temperature threshold T0; if T is greater than T0, then by controlling the refrigeration and / or heating components in the refrigerator, the refrigerator will operate under the first working condition; if T is less than or equal to T0, then by controlling the refrigeration and / or heating components in the refrigerator A heating assembly, so that the refrigerator operates under the second working condition; wherein, when the linear compressor operates within a predetermined time, the cooling capacity of the linear compressor under the second working condition is controlled to be greater than that under the first working condition The cooling capacity of the linear compressor to bring the compartments of the refrigerator to the target temperature. The invention controls the operating conditions of the linear compressor through the refrigeration and / or heating components in the refrigerator to increase the stroke of the piston in the linear compressor, and avoids the refrigerator not working normally due to the protection of the linear compressor by the frequency conversion board.

Description

technical field [0001] The invention relates to the technical field of refrigerators and linear compressors, in particular to a control method and a control system for a refrigerator using a linear compressor. Background technique [0002] The compressor is a driven fluid machine that lifts low-pressure gas into high-pressure gas, and is the heart of the refrigeration system. It inhales low-temperature and low-pressure refrigerant gas from the suction pipe, drives the piston to compress it through the operation of the motor, and discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle, thereby realizing compression → condensation (heat release ) → Expansion → Evaporation (endothermic) refrigeration cycle. [0003] Linear compressors are widely used in small refrigeration capacity fields such as refrigerators. They have the advantages of simple structure, less friction loss, low noise, and can easily adjus...

AI Technical Summary

Problems solved by technology

[0005] When the refrigerator works at a low temperature, the heat load of the refrigerator is low, and the cooling capacity required by the compartment will be relatively low. At this time, the linear compressor will run at a low output power, resulting in a small stroke of the piston of the linear compressor. Hidden danger of hitting the exhaust valve plate

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