Refrigerator and control method and control device thereof
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Solution Overview
Problem
During the defrosting process of a refrigerator with an ice-making function, the ice-making compartment experiences a prolonged high-temperature state, leading to ice cube melting and adherence issues, which affect the ice-making process and long-term storage quality.
Innovation Solution
A control method that prioritizes the flow of refrigerant into the ice-making circuit after defrosting, by detecting and confirming the first control period and the ice-making evaporator's refrigeration request, ensuring the refrigerant flows into the ice-making circuit preferentially to minimize temperature rise and prevent ice cube melting and adherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the refrigerant is controlled to flow into a non-ice making circuit first after defrosting, then the defrosting process can be completed, but the ice making compartment remains in a high-temperature state for a longer duration causing ice cubes to melt and adhere together
Solution Approach 1:
The control method switches the refrigerant flow to the ice making circuit preferentially during the first control period after defrosting, before the compartment fully cools down. This preliminary cooling action prevents ice cube melting and adhesion by establishing the proper temperature condition early in the post-defrost period.
Solution Approach 2:
The system dynamically adjusts the refrigerant flow path based on the operational phase. During the first control period after defrosting, the control valve directs refrigerant to the ice making circuit; in subsequent periods, it switches to the non-ice making circuit. This dynamic switching optimizes temperature control at different stages of the operational cycle.
2Temperature
If the refrigerant flows into the ice making circuit preferentially after defrosting, then the ice making compartment temperature is reduced quickly, but the control system complexity increases
Solution Approach 1:
The control method divides the post-defrost period into distinct control periods with different refrigerant flow strategies. The first control period prioritizes ice making circuit cooling, while subsequent periods prioritize non-ice making circuit cooling. This periodic control approach simplifies the decision logic compared to continuous complex regulation.
Solution Approach 2:
The control system pre-determines the refrigerant flow path based on the operational phase. By establishing a clear sequence (ice making circuit first during the first control period, then non-ice making circuit), the system avoids complex real-time calculations and simplifies the control logic while achieving effective temperature management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces the time the ice-making compartment is in a high-temperature state, preventing ice cube melting and adherence, thereby ensuring long-term and high-quality ice storage.
Implementation Method 1
the refrigerant is controlled to flow into an ice making circuit after refrigerating the freezing compartment or the refrigerating compartment
Implementation Method 2
a refrigerant is generally controlled to flow through a refrigerating circuit or a freezing circuit to refrigerate a freezing compartment or a refrigerating compartment
Data Source
AI summary
Disclosed by the present application are a refrigerator, and a method and a device for controlling the refrigerator. The method includes detecting and confirming that a refrigerator is in a first control cycle after defrosting; detecting and confirming that an ice making evaporator requests cooling, and controlling a control valve to be in communication with an ice making circuit. The method controls the refrigerant to preferentially enter the ice making circuit after the refrigerator defrosts, thereby effectively reducing the time that an ice making compartment is in a high-temperature state due to defrosting, and decreasing the risk that ice cubes might be adhered to each other due to ice cubes melting and then re-freezing. As a result, the long-term high-quality storage of ice cubes is achieved.