Staged access door for a home appliance
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Solution Overview
Problem
Conventional refrigerators lack versatile and marketable access door configurations that allow for viewing contents without opening the door, providing accessible storage, and varying configurations to enhance user experience.
Innovation Solution
A staged access door system comprising a first section hinged to the cabinet with inward-facing vertical rails and a second section with an insulated glass panel, featuring a cavity for storage and moveable shelves, allowing limited access to compartment contents without fully opening the door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional single access door is used, then the structure is simple, but the door cannot provide viewing capability, storage functionality, or configurable variations
Solution Approach 1:
The door is divided into multiple sections: a first door section with viewing window and shelf, and a second door section that can be opened independently. This segmentation allows each section to perform specific functions (viewing, storage, access) without requiring the entire door to be opened, thereby increasing versatility while maintaining manageable structural complexity
Solution Approach 2:
The second door section is nested within or attached to the first door section, creating a multi-layered door structure. The cavity between the sections provides additional storage space, and the nested configuration allows the smaller second section to be accessed independently while being part of the overall door assembly
2Ease of operation
If the door is opened to access compartment contents, then full access is achieved, but energy loss and exposure to ambient air occur
Solution Approach 1:
The second door section allows users to perform partial access actions by opening only the smaller second section for items located in the cavity or near the opening, rather than opening the entire door. This partial action reduces the volume of cold air exposed to ambient conditions, minimizing energy loss while still providing access to frequently used items
Solution Approach 2:
The first door section acts as an intermediary between the user and the main compartment contents. It provides a viewing window to see contents without opening, and a shelf for storing frequently accessed items, serving as a buffer that reduces the need to open the main door, thereby reducing energy loss
3Ease of operation
If viewing capability is added to the door, then user convenience is improved, but the door structure becomes more complex
Solution Approach 1:
The viewing window is merged with the first door section structure, and the shelf is integrated into the same section. This combining of viewing and storage functions within a single door section provides multiple conveniences without requiring separate components, thereby improving ease of operation while limiting the increase in structural complexity
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 experience by providing adjustable storage, secure access to compartment contents, and improved marketability through customizable door configurations that allow viewing and storage without fully opening the door.
Implementation Method 1
an insulated glass panel closing the second opening
Implementation Method 2
a first section having a first lateral edge portion and a second lateral edge portion, being hingeably affixed to the cabinet along the first lateral edge portion
Data Source
AI summary
A refrigerator includes a cabinet housing a refrigerator compartment with a front opening and a door providing access to the refrigerator compartment. The door includes: a first section having a first lateral edge portion and a second lateral edge portion hingeably affixed to the cabinet's first lateral edge portion, a first opening extending generally a substantial area of the first section, inwardly facing vertical rails on each vertical side of the opening, and at least one pocket shelf moveably affixed between the vertical rails; and a second section hingeably affixed to the second lateral edge portion, with a second opening extending generally a substantial area of the second section, an insulated glass panel closing the second opening, a cavity defined between the first section and the second section, a peripheral wall surrounding the cavity, and at least one pocket shelf moveably affixed within the cavity on the peripheral wall.