Refrigerator Door Frame Assembly Without Temporary Foaming Fixtures
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Solution Overview
Problem
The existing refrigerator manufacturing method requires a temporary assembly step to prevent separation of door panels and isolation plates during foaming, leading to increased manufacturing time and decreased efficiency due to the onerous process of temporarily assembling and disassembling these components.
Innovation Solution
A refrigerator design featuring a first frame on the front and side surfaces, second frames connected to the top and bottom, and a third frame on the rear, where the foaming body is filled between these frames to secure them together without the need for temporary assembly, using a method that includes bending plates to form these frames and affixing them to prevent separation during the foaming process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a temporary assembly step is added to fix isolation plates to door panels using temporary fixing means, then the bond between door panel and isolation plate is maintained during foaming, but the manufacturing process becomes onerous and inefficient with increased time and complexity
Solution Approach 1:
The isolation plates are pre-fixed to the door panel at the upper and lower ends using temporary fixing means before the foaming process. This preliminary action ensures that the plates remain in position during foaming, preventing separation while maintaining manufacturing simplicity by avoiding complex assembly procedures
Solution Approach 2:
Temporary fixing means act as an intermediary between the door panel and isolation plates during the manufacturing process. These temporary fixtures provide the necessary holding force during foaming, after which they are removed, leaving the permanent bond established by the foaming body
2Productivity
If the door panel and isolation plate are firmly bonded without temporary assembly, then the manufacturing process is simplified and efficiency is improved, but the components may separate during foaming due to injection pressure
Solution Approach 1:
The isolation plates are pre-fixed to the door panel at the upper and lower ends using temporary fixing means before the foaming process. This preliminary action ensures that the plates remain in position during foaming, preventing separation while maintaining manufacturing simplicity by avoiding complex assembly procedures
Solution Approach 2:
The temporary fixing means provide beforehand cushioning against the separating force generated by foaming injection pressure. By pre-establishing these temporary connections, the system is cushioned against the harmful effect of pressure-induced separation, ensuring reliable bonding without requiring overly complex permanent fixtures
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
This design eliminates the need for temporary assembly, enhancing manufacturing efficiency by maintaining the bond between frames and preventing separation during transportation and installation, thus reducing overall manufacturing time and improving the efficiency of the refrigerator production process.
Implementation Method 1
filling a foaming body into a space between the first frame and the second frames
Data Source
AI summary
A refrigerator is disclosed including a refrigerator compartment configured to store food, and a door configured to selectively open and close the refrigerator compartment. The door includes a first frame disposed on a front surface and side surfaces of the door, and second frames connected to a top and a bottom of the first frame, where the first frame and/or the second frames including fixing portions configured to fix the first frame to the second frames. A manufacturing method for efficiently manufacturing a refrigerator is also disclosed.