Refrigerator Door Frame Foaming Layout for Complete Insulation Filling
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Solution Overview
Problem
The existing doors for refrigerators face challenges in achieving optimal foaming performance of thermal insulators due to increased foaming resistance, leading to incomplete filling and potential leakage of the insulator during the manufacturing process, especially when the foaming injection holes are located centrally on the rear surface, which results in reduced insulation efficiency.
Innovation Solution
The door design incorporates foaming injection holes on the upper, lower, left, and right sides of the frame assembly, allowing for vertical injection of the thermal insulator, which reduces foaming resistance and ensures complete filling by utilizing gravity to guide the insulator effectively into the foaming path, thereby improving insulation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the foaming injection hole is arranged at the center of the rear surface of the door, then the foaming process is simplified, but the foaming resistance increases and the thermal insulator cannot be fully injected
Solution Approach 1:
The single central foaming injection hole is segmented into multiple foaming injection holes arranged at specific positions (upper, lower, left, and right sides of the frame assembly). This segmentation allows the thermal insulator to be injected from multiple directions simultaneously, reducing the foaming path length and foaming resistance, thereby ensuring complete filling of the thermal insulator throughout the door structure.
2Area of stationary object
If the foaming path is made long to cover the entire door area, then complete insulation coverage is achieved, but the foaming resistance increases and leakage occurs
Solution Approach 1:
The foaming injection holes are positioned on multiple sides (upper, lower, left, right) of the frame assembly rather than along a single linear path. This multi-dimensional arrangement creates multiple concurrent foaming paths that radiate outward from different locations, effectively covering the entire door area while keeping each individual path short, thereby reducing foaming resistance and preventing leakage.
3Volume of stationary object
If the door size is increased to provide larger insulation space, then insulation performance is improved, but the foaming path becomes longer and more difficult to fill completely
Solution Approach 1:
For larger door sizes, the foaming injection system is segmented into multiple holes positioned at strategic locations including the upper, lower, left, and right sides of the frame assembly. This segmentation divides the large insulation space into multiple smaller zones, each accessible from a nearby injection hole, thereby maintaining short foaming paths and ensuring complete filling even in large-volume doors.
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 enhances the foaming performance by minimizing foaming resistance, preventing leakage, and ensuring effective filling of the thermal insulator, resulting in improved insulation efficiency and reduced air loss.
Implementation Method 1
allowing for vertical injection of the thermal insulator, which reduces foaming resistance and ensures complete filling by utilizing gravity to guide the insulator effectively into the foaming path
Data Source
AI summary
A door for a home appliance, a home appliance, and a method for manufacturing the same, are disclosed. The door for a home appliance comprises a panel assembly; and a frame assembly defining a predetermined space having an opening connected with an edge of the panel assembly, and making a foaming space for receiving a thermal insulator by means of the predetermined space of the frame assembly and the edge of the panel assembly, wherein a foaming injection hole through which the thermal insulator is injected is provided on at least one of ends of an upper surface, a lower surface, a left side and a right side of the frame assembly.