Transparent Refrigerator Door With Switchable Viewing Panel
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Solution Overview
Problem
Conventional refrigerators have opaque doors, making it difficult for users to see the contents of the storage chamber before opening, leading to cold air leakage and increased power consumption due to frequent door openings and closings.
Innovation Solution
A refrigerator with a partially transparent door featuring a variable transparency film and lighting system that automatically activates when a user approaches, allowing the inner space to be visible without opening the door, and an insulation panel to maintain energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the door is made opaque to maintain insulation and appearance, then energy efficiency is improved, but the user cannot see the storage chamber contents without opening the door
Solution Approach 1:
The door incorporates a variable transparency film that can dynamically change between opaque and transparent states based on user needs. When the user approaches or activates the system, the film transitions to transparent, allowing viewing without opening the door. When not in use, it returns to opaque state to maintain insulation efficiency.
Solution Approach 2:
The transparency parameter of the door is made changeable through the variable transparency film and evaporation treatment. By controlling the transparency parameter (from opaque to transparent), the system allows users to view contents when needed while maintaining energy efficiency during normal operation.
2Loss of information
If the door is made transparent to allow viewing, then the user can see storage chamber contents, but insulation performance deteriorates
Solution Approach 1:
The door uses a variable transparency film that transitions from opaque to transparent only when needed for viewing. This dynamic control ensures the door remains opaque most of the time, maintaining optimal insulation performance while enabling on-demand visibility.
Solution Approach 2:
The transparency activation occurs periodically or on-demand rather than continuously. The door switches to transparent state temporarily when a user approaches or activates it, then returns to opaque state, minimizing energy loss while providing necessary visibility.
3Loss of information
If frequent door opening occurs to check contents, then the user can identify food items, but cold air loss increases
Solution Approach 1:
The system provides preliminary viewing capability through the variable transparency film before the door is opened. Users can identify food items and make decisions about what to retrieve by viewing through the transparent door, reducing the need for frequent door openings and associated cold air loss.
Solution Approach 2:
The variable transparency film acts as an intermediary that allows visual access to the storage chamber contents without physical door opening. This intermediary mechanism enables information transfer (viewing contents) while maintaining the physical barrier that prevents cold air leakage.
4Loss of information
If a transparent door is used, then viewing is enabled, but exterior appearance and cleanliness are compromised
Solution Approach 1:
The door maintains an opaque exterior appearance during normal conditions, preserving the refrigerator's aesthetic design. When viewing is required, the variable transparency film transitions to transparent, temporarily revealing contents while maintaining the clean exterior look when not in use.
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
The transparent door design reduces cold air leakage and energy consumption by allowing users to view contents without opening the door, while maintaining a clean exterior appearance and efficient insulation.
Implementation Method 1
a variable transparency film attached to a back surface of the evaporation treatment unit provided in the front panel to get transparent when the power is supplied
Implementation Method 2
an evaporation treatment unit evaporated on an overall back surface of the front panel to transmit lights partially
Implementation Method 3
a proximity sensor provided in the second door to sense a user's approaching
Data Source
AI summary
There is disclosed a refrigerator; a lighting device provided in the storage chamber, a first door rotatably coupled to the case to open and close the storage chamber, an auxiliary storage chamber provided in the first door, a second door, a front panel formed of a transparent material, an evaporation treatment unit evaporated on an overall back surface of the front panel to transmit lights partially, a variable transparency film attached to a back surface of the evaporation treatment unit provided in the front panel to get transparent when the power is supplied, a frame unit with an opening having a corresponding size to an opening provided in the first door, an insulation panel distant from the front panel, a power supply unit for supplying an electric power to the variable transparency film and the lighting device, a proximity sensor provided in the second door to sense a user's approaching.