Transparent Refrigerator Door Display for Cool Air Loss Reduction
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Solution Overview
Problem
Conventional refrigerators require opening the door to confirm the storage of food, leading to unnecessary leakage of cool air and increased door opening times, especially when the stored position is unknown.
Innovation Solution
A refrigerator with a selectively transparent door that allows users to see inside without opening, featuring a transparent display assembly with a touch sensor and display, which can output a screen and is designed to prevent damage and maintain insulation, with electronic components connected to a control unit through a compact wire arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the door is made opaque to maintain insulation, then thermal insulation is improved, but the ability to see inside the refrigerator without opening the door deteriorates
Solution Approach 1:
The door panel incorporates a transparent display assembly that can dynamically switch between transparent and opaque states. When the user needs to view stored food, the display becomes transparent; when viewing is not needed, it returns to opaque state to maintain insulation. This dynamic state change allows the door to adapt to different usage scenarios, resolving the contradiction between visibility and thermal insulation.
Solution Approach 2:
The optical parameter (transparency) of the door panel is changed on demand through the transparent display assembly. By controlling the transparency parameter of the display assembly, the system allows users to view inside the refrigerator without physically opening the door, thereby preventing cool air leakage while providing visual access to stored food items.
2Loss of information
If a transparent display assembly is added to the door to allow viewing, then visibility of stored food is improved, but the device complexity increases
Solution Approach 1:
The transparent display assembly serves multiple functions: it displays information (such as storage contents, expiration dates), provides a user interface for controlling refrigerator functions, and acts as the door panel itself when transparent. By integrating these multiple functions into a single component, the overall device complexity is managed more effectively than if separate components were used for each function.
Solution Approach 2:
The transparent display assembly acts as an intermediary between the user and the refrigerator interior. Instead of requiring direct visual access by opening the door, the display assembly mediates this interaction by providing visual information about stored food while the door remains closed, thereby simplifying the user interaction model.
3Adaptability or versatility
If electronic components are placed inside the door for the transparent display, then the display function is integrated, but the insulation performance deteriorates
Solution Approach 1:
The door structure is segmented into distinct functional zones: an insulation layer for thermal performance, a frame structure for mechanical support, and a transparent display assembly for user interaction. The electronic components are confined to specific areas (primarily within the frame and behind the display assembly) rather than being distributed throughout the insulation layer, allowing the insulation material to maintain its effectiveness while still enabling display functionality.
Data Source
AI summary
A refrigerator includes a cabinet, a door, an outer plate defining a plate opening, a door liner defining a liner opening, a frame disposed along a circumference of the plate opening, a transparent display assembly seated on the frame and configured to cover at least a portion of the plate opening and the liner opening, a decoration cap defining a top surface of the door, an insulation material filled in at least a portion of the door along a circumference of the transparent display assembly, a PCB configured to control operation of the transparent display assembly, and a barrier that contacts the outer plate and that defines a first space configured to receive the insulation material and a second space configured to accommodate the PCB.