Refrigerator and control method thereof
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional refrigerators lack a convenient method to check the contents inside without opening the door, leading to unnecessary cooling air leakage and inconvenience in accessing frequently used items.
Innovation Solution
A refrigerator with a panel assembly featuring a half-glass structure and a knock detection system that allows users to selectively see through the inside while the door is closed, using a lighting unit activated by user operation, and includes a detection device to confirm user presence, ensuring efficient insulation and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the refrigerator door is made transparent to allow visibility of interior contents, then user convenience is improved, but insulation performance deteriorates
Solution Approach 1:
The door is divided into multiple panels, with at least one panel being transparent and others being opaque. This segmentation allows the transparent panel to provide visibility while opaque panels maintain insulation, resolving the contradiction between visibility and energy efficiency.
Solution Approach 2:
Different parts of the door have different optical properties - some panels are transparent while others are opaque. This local differentiation allows specific areas to serve visibility functions while other areas maintain insulation performance.
2Loss of information
If the entire refrigerator door is opened to check contents, then user can see and access food, but cooling air leakage increases
Solution Approach 1:
The visibility function is extracted from the door opening action. Users can view contents through transparent panels without opening the door, separating the information-gathering function from the door-opening action and thereby preventing cooling air leakage.
Solution Approach 2:
The transparent panels allow users to preliminarily check contents before opening the door. This preliminary visualization action enables users to determine whether door opening is necessary, reducing unnecessary openings and associated energy loss.
3Ease of operation
If auxiliary doors are added to access frequently used items, then convenience is improved, but device complexity increases
Solution Approach 1:
The transparent panels serve multiple functions: they allow visibility of contents, maintain insulation performance, and eliminate the need for separate auxiliary doors. This multi-functionality provides convenience while avoiding the complexity of additional door mechanisms.
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
Enhances user convenience by allowing interior visibility without opening the door, reducing cooling air leakage, and maintaining insulation performance, while preventing dew condensation and facilitating easy installation and maintenance.
Implementation Method 1
a lighting unit provided inside the refrigerator, and turned on or off by a signal of the knock detection device while the door is closed, such that the panel assembly selectively becomes transparent
Implementation Method 2
a knock detection device disposed to be in close contact with a rear surface of the panel assembly, and configured to detect a user's knocking operation on the panel assembly
Implementation Method 3
a panel assembly provided at the opening, and having a half glass structure which allows to selectively see through an inside of the refrigerator
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Refrigerator comprising a refrigerator door which is selectively made transparent by a user's knocking operation, such that the user sees through an inside of the refrigerator while the refrigerator door is closed.