Refrigerator control method and control system adopting linear compressor

Abstract

The invention discloses a refrigerator control method and a refrigerator control system adopting a linear compressor. The control method comprises the following steps: monitoring an environment temperature T of a refrigerator; comparing the environment temperature T with a preset environment temperature threshold value T0; if T is greater than T0, controlling a proportion that a refrigerating fluid flows to a freezing refrigerating loop is a preset first refrigerating fluid proportion; and if T is smaller than or equal to T0, controlling the proportion that the refrigerating fluid flows to the freezing refrigerating loop is a preset first refrigerating fluid proportion, wherein the second refrigerating fluid proportion is smaller than the refrigerating fluid proportion, so that when the linear compressor operates within predetermined time, increasing stroke of a piston in the linear compressor. According to the refrigerator control method, the stroke of the piston in the linear compressor is increased by reducing the proportion that the refrigerating fluid flows to the freezing refrigerating loop, so that the problem that a refrigerator cannot normally work due to the fact that the linear compressor is protected by a variable-frequency plate is avoided.

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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