Refrigerator Front Strip Shell for Transverse Rigidity
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Solution Overview
Problem
Household refrigeration appliances lack sufficient transverse rigidity, especially when handled with clamps, due to the limited stiffness provided by the front carrier module, which restricts handling and installation, particularly in warehouse settings where lateral pressure is applied.
Innovation Solution
A refrigeration device design featuring a user interface on a front strip with a reinforced shell that includes a recessed circuit module, latching means, and a web extending over the entire width for stabilization, along with a tongue and groove connection for easy assembly and stiffening, allowing for improved handling and installation without compromising the user interface's dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a front carrier module is used to house the user interface, then the user interface can be integrated into the appliance, but the transverse rigidity of the body is insufficient for safe handling with clamps
Solution Approach 1:
The shell is divided into multiple functional zones including a first shell portion with the opening for the user interface, a second shell portion extending rearward, and a web connecting them. This segmentation allows each portion to be optimized for its specific function while collectively providing the required structural strength.
Solution Approach 2:
The shell extends in the depth direction of the appliance beyond what would be required for the user interface alone. This additional depth creates a structurally advantageous form that significantly increases transverse rigidity, allowing the body to withstand handling forces while still accommodating the user interface requirements.
2Strength
If the shell extends beyond the user interface dimensions to provide rigidity, then transverse stabilization is improved, but the available installation space for circuit components is limited
Solution Approach 1:
Circuit components are nested within the shell structure itself. The shell encloses a cavity that accommodates circuit modules, power supplies, and other electronic components, integrating the housing and component mounting functions into a single structural element.
Solution Approach 2:
The shell serves multiple functions simultaneously: it provides the structural framework for the appliance body, houses the user interface through its opening, accommodates circuit components within its cavity, and contributes to transverse stabilization through its extended depth and web connection. This multi-functionality eliminates the need for separate component housings.
3Ease of manufacture
If circuit components are accommodated in the shell, then routing of connections through the appliance housing is simplified, but the shell structure becomes more complex
Solution Approach 1:
The shell integrates multiple functions that would traditionally be separate: the user interface housing, the circuit component enclosure, and the structural reinforcement element are merged into a single integrated structure. This reduces the total number of parts and simplifies assembly while managing complexity through functional integration.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
In a refrigeration device with a body (37) and a door (35) attached to the body (37), a user interface is formed on a front strip (19) closing off a ceiling of the body. An upwardly open shell for receiving at least one circuit assembly (2, 3) functionally connected to the user interface is arranged in the body behind the front strip (19).