Electrical household appliance cabin wall assembling structure with increased contact surface
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Solution Overview
Problem
Existing electrical household appliance cabin wall structures face challenges in achieving optimal structural integrity between side panels and structural side members, with trapped air within insulation materials hindering effective polyurethane application and adhesion.
Innovation Solution
Incorporating insulating material communication ports, or side member openings, in structural side members to increase polyurethane contact surface area, enhance adhesion, and facilitate air discharge during polyurethane and vacuum application, thereby ensuring improved structural integrity and reduced air entrapment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If side panels are assembled to form cabinet surfaces without communication ports in side members, then the structure is simpler to manufacture, but air becomes trapped within the insulation material reducing adhesion and structural integrity
Solution Approach 1:
The side members are designed with communication ports (openings) that create controlled porous pathways through the insulation material. These ports allow air to escape during the insulation application process, preventing air entrapment and ensuring proper adhesion between the insulation material and the cabinet structure, thereby improving structural integrity without requiring complex additional components
Solution Approach 2:
The side members are segmented with multiple communication ports distributed across their surfaces. This segmentation allows different regions of the insulation material to be properly bonded to the cabinet structure, creating multiple adhesion points that collectively enhance the overall structural integrity of the cabinet assembly
2Reliability
If polyurethane insulation material is applied without air discharge pathways, then the application process is faster, but trapped air reduces adhesion and thermal insulation effectiveness
Solution Approach 1:
The communication ports in the side members serve as intermediary channels that facilitate the discharge of air trapped within the insulation material. These ports act as mediators between the insulation material and the external environment, allowing air to escape while the polyurethane cures, ensuring proper adhesion without requiring complex vacuum equipment or extended application times
Solution Approach 2:
The communication ports create a porous pathway system that allows air to escape during the insulation application process. This porous structure enables the polyurethane to properly bond to the cabinet surfaces by removing air pockets that would otherwise prevent adhesion, while maintaining a relatively simple and fast application process
3Area of stationary object
If side members are solid without openings, then manufacturing and assembly are simpler, but polyurethane contact surface is reduced and air discharge is hindered
Solution Approach 1:
The side members incorporate communication ports that create a porous structure, increasing the effective contact surface area between the polyurethane insulation material and the side members. These ports allow the polyurethane to bond to internal surfaces that would otherwise be inaccessible, significantly increasing the adhesion area while requiring only simple modifications to the side member manufacturing process
Solution Approach 2:
The communication ports introduce additional dimensional complexity to the side members by creating three-dimensional pathways and internal surfaces. This dimensional change increases the total surface area available for polyurethane adhesion without requiring the side members to be larger or more complex in their external dimensions
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 enhances structural integrity between side panels and side members, ensuring robust assembly and efficient insulation material distribution, while reducing air entrapment and improving adhesion, leading to improved thermal insulation and structural support.
Implementation Method 1
polyurethane thermal insulation material injected into the inner volume inflates and exerts pressure against all the surfaces which surround polyurethane insulation material from inside
Implementation Method 2
amount of air entrapped within the insulation material is decreased as air discharge is enhanced during polyurethane and vacuum application
Data Source
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AI summary
The present invention relates to an electrical household appliance cabin wall assembling structure with increased contact surface. The present invention more particularly relates to an electrical household appliance comprising a cabinet with a plurality of face walls including a top sheet and a rear sheet defining an interior space of said cabinet.