Refrigeration appliance and method for three-compartment cooling
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Solution Overview
Problem
Refrigeration appliances with multiple compartments experience inconsistent and unpredictable temperature cycling, leading to deterioration in performance and food quality due to erratic temperature changes.
Innovation Solution
A refrigeration appliance with a controller that operates a cooling system to provide cooled air sequentially to compartments, prioritizing temperature stabilization through hysteresis control, ensuring each compartment reaches its target temperature before moving to the next, and allowing individual compartment priority for immediate cooling needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the cooling system operates continuously to maintain temperature in all compartments, then temperature stability is improved, but energy consumption increases
Solution Approach 1:
The cooling system is segmented into separate cooling cycles for the fresh food compartment and freezer compartment. The controller independently manages each compartment's cooling cycle, allowing the system to deactivate cooling in one compartment when its temperature target is achieved while continuing cooling in other compartments that still require temperature maintenance.
Solution Approach 2:
The cooling system operates in periodic cycles rather than continuously. Each compartment undergoes periodic cooling cycles controlled by the controller, which activates cooling only when temperature thresholds are exceeded and deactivates it when targets are achieved, creating an on-demand periodic operation pattern that reduces overall energy consumption.
2Stability of the object's composition
If the cooling system serves all compartments simultaneously, then temperature distribution is improved, but temperature cycling consistency deteriorates
Solution Approach 1:
The cooling system is divided into separate cooling cycles for different compartments. The controller manages each compartment's cooling independently through separate cycles, which prevents the erratic temperature cycling that occurs when all compartments are served simultaneously by a single cooling cycle.
Solution Approach 2:
The system dynamically adjusts the cooling cycle operation based on real-time temperature conditions in each compartment. The controller monitors temperature thresholds and dynamically activates or deactivates cooling cycles for specific compartments, allowing flexible adaptation to varying thermal conditions while maintaining consistent temperature cycling in each compartment.
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
Achieves stable and predictable temperature cycling, enhancing appliance performance and food quality by maintaining consistent compartment temperatures.
Implementation Method 1
A cooling system is configured to provided cooled air to a target temperature relative to each compartment
Data Source
AI summary
A refrigeration appliance, a controller, and a method for operating a three-compartment refrigeration appliance are provided. Operations include operating a cooling system to provide cooled air to a first compartment then operating the cooling system to provide cooled air to a second compartment. After operating the cooling system to provide cooled air to the second compartment, the operations include operating the cooling system to provide cooled air to the third compartment prior to deactivating the cooling system following operating the cooling system to provide cooled air to the second compartment.