Refrigerator Airflow Switching for Different Compartment Temperatures
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Solution Overview
Problem
In refrigerators with a single cooler, the environment of one storage compartment can negatively influence another compartment with a different temperature range due to the flow of cold air, leading to humidity issues in compartments with higher temperature settings.
Innovation Solution
A refrigerator design featuring separate cold air passages for each compartment with a switching unit to control airflow, a cooling fan, and a processor to manage compressor operation and airflow distribution, ensuring that cold air is directed appropriately to maintain optimal temperature and humidity levels in both compartments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single cooler is used to cool both the first storage compartment and the second storage compartment, then the device complexity is reduced, but the environment of the first storage compartment influences the second storage compartment due to cold air flow
Solution Approach 1:
The cold air passage is divided into multiple independent passages (first cold air passage and second cold air passage) that are spatially separated. The switching unit segments the airflow path, directing cold air to either the first storage compartment or the second storage compartment based on operational needs, preventing cross-contamination of environmental conditions between compartments.
Solution Approach 2:
The switching unit acts as an intermediary device that controls and regulates the flow of cold air from the single cooler to different storage compartments. It mediates between the single cooler source and multiple destination compartments, ensuring that cold air is directed only to the intended compartment and preventing unwanted environmental influence.
2Object-affected harmful factors
If separate cold air passages are provided for each storage compartment, then the environmental influence between compartments is prevented, but the device complexity increases
Solution Approach 1:
Multiple cold air passages are merged into a single integrated duct structure that branches to serve different storage compartments. The switching unit is integrated within this unified duct system, allowing multiple functions (separate airflow paths, switching control, and structural support) to be combined in a single design, thereby reducing overall complexity despite providing separate passages.
Solution Approach 2:
The single cooler and integrated duct structure serve multiple functions: they can cool different storage compartments independently, maintain different temperature conditions, and adapt to various operational requirements through the switching unit. This multi-functionality reduces the need for completely separate cooling systems for each compartment.
3Productivity
If cold air is blown into the second storage compartment during cooling operation, then the cooling effect is improved, but the humidity in the second storage compartment decreases due to influence from the first storage compartment
Solution Approach 1:
The airflow path is segmented into separate channels for different storage compartments. When cooling the second storage compartment, the switching unit directs cold air exclusively through the second cold air passage, preventing cold air from the first storage compartment from mixing in and causing humidity loss.
Solution Approach 2:
The switching unit serves as an intermediary that controls the airflow direction, ensuring that cold air reaches the second storage compartment without being contaminated by cold air from the first storage compartment, thereby maintaining proper humidity levels while achieving effective cooling.
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 design effectively prevents the influence of one compartment's environment on another, maintaining desired humidity levels in the refrigerating compartment while optimizing energy use and reducing material costs through shared side walls and optimized duct structures.
Implementation Method 1
a compressor for compressing and circulating a refrigerant
Implementation Method 2
a cooler provided to generate cold air through circulation of the refrigerant by the compressor
Data Source
AI summary
A first storage compartment's influence on a second storage compartment, when the first storage compartment and the second storage compartment have different temperature ranges and are cooled by a single cooler, is reduced. A refrigerator includes a compressor for compressing and circulating a refrigerant, a cooler provided to generate cold air through circulation of the refrigerant, a first storage compartment having an temperature maintained within a first range, a second storage compartment having an temperature maintained within a second range different from the first range, a first air passage for guiding cold air generated in the cooler to the first storage compartment, a second air passage for guiding cold air generated in the cooler to the second storage compartment, and a switching unit for guiding the cold air generated in the cooler to selectively flow into any one of the first air passage and the second air passage.