Reinforced Resin Vacuum Case for Deformation-Resistant Refrigerator Drawers
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Solution Overview
Problem
Conventional refrigerators face challenges in preventing transformation of the vegetable storage case when depressurized, which complicates fabrication and increases costs due to the use of metallic materials, and forming a synthetic resin case that can transform under depressurization.
Innovation Solution
A refrigerator design featuring a case body made of synthetic resin with a transformation preventing member of higher strength, such as stainless steel, integrated into the flange portion to prevent case transformation during depressurization, along with a sealed state maintaining device for enhanced sealing and easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the case is formed of a metallic member to prevent transformation when depressurized, then the transformation resistance is improved, but the fabrication difficulty and cost increase
Solution Approach 1:
The case is formed as a composite structure combining a synthetic resin member (easy to fabricate) with a transformation preventing member (metallic or high-strength material) that resists deformation during depressurization. This composite approach allows the case to benefit from both the ease of synthetic resin fabrication and the transformation resistance of metallic materials.
Solution Approach 2:
The case is divided into functional segments: the main body made of synthetic resin for easy fabrication, and a separate transformation preventing member (such as a reinforcing rib or metallic insert) that provides structural support during depressurization. This segmentation allows each part to be optimized for its specific function.
2Ease of manufacture
If the case is formed of a synthetic resin member to simplify fabrication, then the fabrication ease is improved, but the case transformation occurs when depressurized
Solution Approach 1:
The case uses a composite structure where the synthetic resin member provides ease of fabrication while the integrated transformation preventing member (made of metallic or high-strength material) maintains shape stability during depressurization.
Solution Approach 2:
The transformation preventing member is strategically positioned at critical areas of the case where deformation is most likely to occur during depressurization, providing localized reinforcement only where needed rather than making the entire case structure complex.
3Stability of the object's composition
If a transformation preventing member is added to the case to prevent deformation, then the shape stability is improved, but the device complexity increases
Solution Approach 1:
The transformation preventing member is merged with the case structure itself, forming an integrated composite component rather than a separate attachment. This merging reduces the number of discrete parts and simplifies the overall device structure while maintaining shape stability.
Solution Approach 2:
The case is formed as a composite structure where the transformation preventing member and the main body are integrated into a single unified component, reducing assembly steps and structural complexity while providing the necessary deformation resistance.
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 solution effectively prevents case transformation during depressurization, simplifies fabrication processes, reduces costs, and maintains a sealed state for better food preservation, while facilitating assembly and operation.
Implementation Method 1
when the drawer is accommodated in the case, an inside of the drawer and the case may be depressurized to a pressure lower than an atmospheric pressure by a depressurizing device
Data Source
AI summary
Disclosed is a refrigerator, comprising: a refrigerator body having a cooling chamber; a case comprising a case body having therein an accommodation space of which one side is open, and a transformation preventing member formed of a material having a higher strength than that of the case body, the transformation preventing member provided at an open region of the case body and configured to prevent transformation of the case; a drawer accommodated in the case in a withdrawable manner; and a depressurizing device configured to depressurize inside of the drawer and the case to a pressure lower than an atmospheric pressure, when the drawer is accommodated in the case. Under such configuration, transformation of the case can be prevented, and the case can be easily fabricated.