Refrigerator having panel assembly
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Solution Overview
Problem
Existing refrigerators do not allow users to check the contents inside the refrigerator without opening the door, leading to unnecessary cooling air leakage and inconvenience when the desired food is not found.
Innovation Solution
A sub-door with a transparent or opaque glass material is integrated into the main door, allowing users to view the contents of the refrigerator compartment without opening the main door, and the glass material can be selectively changed between transparent and opaque states based on user operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the refrigerator door is made transparent to allow viewing of contents, then users can check food without opening the door, but the insulating performance of the refrigerator deteriorates
Solution Approach 1:
The glass panel is made switchable between transparent and opaque states. When the user needs to check food contents, the glass becomes transparent. When not in use, it returns to opaque state to maintain insulation. This dynamic state change allows the system to adapt to different operational requirements, resolving the contradiction between viewing convenience and energy efficiency.
Solution Approach 2:
The optical properties of the glass panel are changed by controlling its transparency parameter. The glass can transition from an opaque state (providing good insulation) to a transparent state (allowing viewing). This parameter change enables the system to optimize both insulation performance and user convenience at different times, addressing the technical contradiction.
2Ease of operation
If the glass panel is always transparent to allow viewing, then users can easily check contents, but the external appearance of the refrigerator deteriorates when not in use
Solution Approach 1:
The glass panel dynamically changes its transparency based on user needs. When the user activates the switch, the glass becomes transparent for viewing. When deactivated, it returns to an opaque state that provides a clean, uniform external appearance. This dynamic behavior resolves the contradiction between viewing convenience and aesthetic appearance.
3Loss of information
If the main door is opened to check food contents, then users can see what is stored, but cooling air leaks unnecessarily
Solution Approach 1:
The switchable glass panel acts as an intermediary between the user and the food contents. Instead of opening the door to see what is stored, users can activate the glass to become transparent, allowing visual inspection without physical door opening. This intermediary solution provides information access while maintaining the sealed environment, preventing cooling air leakage.
Solution Approach 2:
The mechanical action of opening the door is replaced by an optical mechanism - the switchable glass panel. Users obtain visual information through optical transparency control rather than mechanical door opening. This substitution eliminates the harmful effect of cooling air leakage while maintaining the useful function of content visibility.
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
Enables users to check the contents of the refrigerator without opening the main door, minimizing cooling air leakage and maintaining the refrigerator's external appearance, while also providing user convenience and energy efficiency.
Implementation Method 1
a sub-door with a transparent or opaque glass material is integrated into the main door, allowing users to view the contents of the refrigerator compartment without opening the main door, and the glass material can be selectively changed between transparent and opaque states based on user operation
Data Source
AI summary
Provided are a refrigerator and a control method thereof. The refrigerator is characterized by enabling at least a part of a refrigerator door to be selectively transparent by a user's operation, such that the user sees through an inside of the refrigerator while the refrigerator door is closed.