Reinforced Refrigerator Inner Door for Full Door-Guard Access
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Solution Overview
Problem
Conventional refrigerators with subsidiary doors can only access some of the door guards at the rear surface of the main door without opening the main door, limiting access to all door guards.
Innovation Solution
A refrigerator design featuring an inner door with an opening and an outer door, where reinforcing members connect the side frames to prevent distortion and allow access to all door guards by opening only the subsidiary door, enhancing access and minimizing cool air leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a subsidiary door is added to enable access to door guards without opening the main door, then access convenience is improved, but the subsidiary door has size limitations that prevent access to all door guards
Solution Approach 1:
The door system is divided into multiple independent components: a main door and a subsidiary door. The subsidiary door is positioned at the lower portion of the main door, allowing selective access to door guards located in the lower region without opening the entire main door. This segmentation enables differentiated access patterns based on user needs.
Solution Approach 2:
The subsidiary door is positioned at a different spatial location (lower portion) of the main door structure, creating a vertical dimension of access. This allows users to access lower door guards through the smaller subsidiary door opening while the main door remains closed, effectively utilizing vertical space distribution to resolve the access limitation.
2Stability of the object's composition
If the inner door structure is made more complex to accommodate multiple door guards and reinforcing members, then structural stability is improved, but manufacturing complexity increases
Solution Approach 1:
Reinforcing members are introduced as intermediary structural elements between the inner panel and the door guards. These reinforcing members provide structural support and stability to the inner door assembly, distributing mechanical loads and preventing deformation of the inner panel while accommodating multiple door guards at different positions.
Solution Approach 2:
The inner door assembly utilizes a composite structure combining the inner panel, outer panel, insulation layer, and reinforcing members. This composite construction provides enhanced structural stability and rigidity compared to a simple single-layer door structure, while the modular nature of the composite components facilitates manufacturing and assembly.
Data Source
AI summary
A refrigerator including a storage compartment, an inner door having an opening in a size corresponding to the storage compartment, a plurality of door guards provided at the opening, and an outer door to open/close the opening, the refrigerator further including a plurality of reinforcing members to prevent the inner door having the opening from being distorted.