A control system for an air-cooled refrigerator

Abstract

A control system of an air-cooled refrigerator comprises a normal operation procedure. The normal operation procedure comprises the following steps that A1, the air-cooled refrigerator is powered on and started; A2, a sensor on an evaporator is started and detects the temperature on the evaporator, and a sensor on a refrigeration chamber is started and detects the temperature in the refrigerationchamber; A3, the temperature value of the evaporator is monitored by the system; A4, when the temperature value of the refrigeration chamber is larger than or equal to a preset startup temperature value, refrigerating is started, and when the temperature value of the refrigeration chamber is smaller than the preset startup temperature value, the system reads the temperature value of the refrigeration chamber again; and A5, after refrigerating is carried out for a period of time, the system reads the temperature value of the refrigeration chamber again, refrigerating is stopped when the temperature value of the refrigeration chamber is smaller than or equal to the preset startup temperature value, and the system cyclically works according to the process of the step A4 when the temperature value of the refrigeration chamber is larger than the preset startup temperature value. The control system has the beneficial effects that electrical connection is simplified; control is reasonable; performance is reliable; cost is low; temperature control is accurate; and a perfect self-checking function is achieved.

Description

technical field [0001] The invention relates to a refrigerator, in particular to a control system for an air-cooled refrigerator. Background technique [0002] At present, the mainstream air-cooled refrigerators on the market generally install temperature sensors in the refrigerator compartment and freezer compartment to detect the temperature, and perform different combined logic controls on the sensors and loads at different stages of the refrigeration process. This control method not only increases the cost , and increases the complexity of program design; at the same time, due to the large number of signals from sensors and loads, it increases the difficulty of self-inspection of circuit boards and finished products, and it is prone to take a long time for self-inspection, or even fail to detect failures. It can be seen that Accurate temperature control and system complexity are often a pair of contradictions that coexist. Therefore, it is necessary to make further impr...

AI Technical Summary

Problems solved by technology

[0002] At present, the mainstream air-cooled refrigerators on the market generally install temperature sensors in the refrigerator compartment and freezer compartment to detect the temperature, and perform different combined logic controls on the sensors and loads at different stages of the refrigeration process. This control method not only increases the cost , and increases the complexity of program design; at the same time, due to the large number of signals from sensors and loads, it increases the difficulty of self-inspection of circuit boards and finished products, and it is prone to take a long time for self-inspection, or even fail to detect failures. It can be seen that Accurate temperature control and system complexity are often a pair of contradictions that coexist

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