Refrigerator and control method thereof
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Solution Overview
Problem
Conventional refrigerators require opening the main door to check the contents, leading to unnecessary cooling air leakage and inconvenience in accessing frequently used items without compromising insulation.
Innovation Solution
A refrigerator design featuring a sub-door with a detection device, lighting unit, and panel assembly that allows selective viewing of the interior without opening the main door, using a half-mirror front panel with adjustable light transmittance and insulation panels to minimize air leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the main door is opened to check the contents, then the user can see what food is stored, but cooling air leaks and energy is lost
Solution Approach 1:
A transparent panel assembly is introduced as an intermediary between the user and the refrigerator interior. This panel allows visual inspection of stored food without requiring the main door to be opened, thereby preventing cooling air leakage while maintaining visibility of contents.
Solution Approach 2:
The door structure is segmented into multiple functional parts: a main door, a sub-door with the transparent panel assembly, and insulation panels. This segmentation allows the transparent viewing function to be integrated without compromising the overall insulation performance of the door.
2Loss of information
If a transparent panel is added to the door, then viewing of interior contents is enabled, but insulation performance deteriorates
Solution Approach 1:
The door assembly uses composite materials including transparent tempered glass for the panel, vacuum deposition layers for selective light transmission, and insulation panels with air gaps. These composite structures provide both transparency for viewing and thermal insulation to maintain energy efficiency.
Solution Approach 2:
The transparent panel is positioned in a separate dimension from the main insulation structure. The panel assembly includes multiple layers with air gaps, creating dimensional separation between the transparent viewing surface and the insulation core, allowing both functions to coexist without compromising either.
3Loss of information
If the panel assembly is made fully transparent, then viewing is maximized, but insulation and privacy are compromised
Solution Approach 1:
The panel assembly has non-uniform optical properties across its structure. The vacuum deposition layer and multi-layer glass construction create regions with different light transmission characteristics, allowing selective transparency that maintains insulation performance while enabling viewing functionality.
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 interior contents without opening the main door, reducing cooling air loss and enhancing convenience by maintaining insulation while allowing transparent viewing when needed.
Implementation Method 1
the front panel may include a glass layer made of transparent glass, a vacuum deposition layer provided on a rear surface of the glass layer by vacuum deposition of a titanium compound
Implementation Method 2
the panel assembly is configured to, based on the lighting unit being turned on, transmit light from the inside of the refrigerator to thereby allow viewing of the inside of the refrigerator through the panel assembly
Implementation Method 3
a lighting unit configured to, based on the door being closed, turn on and off according to a signal from the detection device and to illuminate an inside of the refrigerator
Implementation Method 4
a plurality of insulation panels spaced apart from the front panel and made of a transparent tempered glass
Data Source
AI summary
A refrigerator includes a cabinet defining a storage space, a door connected to the cabinet and configured to open and close the storage space, the door defining an opening that is in communication with the storage space, a detection device provided in the door and configured to detect a user's operation, a lighting unit configured to, based on the door being closed, turn on and off according to a signal from the detection device and to illuminate an inside of the refrigerator, and a panel assembly provided to the door and covering the opening, the panel assembly being configured to allow selective viewing of the inside of the refrigerator through the panel assembly. The panel assembly is configured to, based on the lighting unit being turned on, transmit light from the inside of the refrigerator to thereby allow viewing of the inside of the refrigerator through the panel assembly.