Refrigerator Defrosting Control Synchronized with Ice Maker Cycles

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Solution Overview

Problem

Current refrigerator defrosting methods either disrupt ice making cycles, extending them and increasing energy consumption, or delay defrosting, risking frost jams and reducing reliability.

Innovation Solution

A method that detects the cumulative compressor running time and the ice maker's state to control defrosting only after the ice making cycle is completed, avoiding defrosting during active ice making and ensuring timely defrosting to prevent frost jams.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If defrosting is performed when the compressor meets specific running time conditions without distinguishing the ice maker's working state, then the defrosting operation can be executed timely, but the temperature of the ice making chamber rises sharply, extending the ice making cycle and decreasing ice making capacity

Engineering Contradiction:
Improvedefrosting execution reliabilityVSAvoidice making capacity
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The control system dynamically adjusts the defrosting execution timing based on the real-time working state of the ice maker. When the ice maker is detected to be in the working state, the defrosting operation is postponed until after the current ice making cycle completes, thereby avoiding temperature rise during ice making and maintaining ice making capacity while ensuring defrosting is performed when conditions are met

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control system continuously monitors the working state of the ice maker and uses this feedback information to determine the appropriate timing for defrosting operation. The system adjusts defrosting execution based on feedback from the ice maker's operational status, ensuring that defrosting does not interfere with active ice making cycles

Inventive Principle:
Principle #23Feedback

2Productivity

If defrosting operation is delayed when the ice maker is in the working state, then the ice making cycle is maintained, but the compressor downtime is delayed and the risk of frost jam increases

Engineering Contradiction:
Improveice making cycle continuityVSAvoidfrost jam risk
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The control system performs preliminary assessment of the compressor's cumulative running time and compares it with the predefined time threshold before the ice maker's current cycle ends. This preliminary action ensures that defrosting can be executed promptly after the ice making cycle completes, preventing frost jam while maintaining ice making continuity

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The defrosting timing is dynamically adjusted based on the ice maker's working state. When the ice maker is working, defrosting is postponed; when the ice maker completes its cycle and the compressor has accumulated sufficient running time, defrosting is executed immediately, thereby balancing ice making continuity with frost prevention

Inventive Principle:
Principle #15Dynamics

3Duration of action of moving object

If defrosting is performed during the ice making cycle, then the compressor can maintain continuous operation, but the ice making efficiency and capacity decrease due to temperature rise

Engineering Contradiction:
Improvecompressor continuous operation timeVSAvoidice making efficiency
Core Design Contradiction:
Duration of action of moving objectVSProductivity

Solution Approach 1:

The control system dynamically coordinates the defrosting operation with the ice making cycle by monitoring the ice maker's working state. Defrosting is scheduled to occur after the ice making cycle completes, ensuring that the compressor can maintain continuous operation while avoiding temperature rise during ice making, thereby preserving ice making efficiency

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12135160B2Refrigerator and control method, device and system thereof
Publication Date: 2024.11.05 HEFEI MIDEA REFRIGERATOR CO LTD
  • US12135160B2 patent drawing
  • US12135160B2 patent drawing
  • US12135160B2 patent drawing

AI summary

A refrigerator and a control method, device and system thereof are included. The method includes detecting and confirming that the cumulative running time of a compressor is no less than a running time threshold, and an ice maker is currently in a working state, and controlling the ice maker to perform a defrosting operation after a current ice making period is ended, the running time threshold being a time difference between the defrosting period of the refrigerator and the ice making period of the ice maker.