Door for home appliance, home appliance, and method for manufacturing the same
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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 and leakage issues, particularly when the foaming space and path are reduced, leading to incomplete filling and potential leakage of the foaming agent.
Innovation Solution
The door design incorporates a frame assembly with foaming injection holes on multiple sides, such as the upper, lower, left, and right surfaces, allowing for improved thermal insulator injection and distribution, with the panel assembly and frame assembly forming a predetermined space for efficient foaming, and the door is assembled vertically to facilitate better agent flow and prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the foaming space and path are reduced in the door design, then the door structure becomes more compact and efficient, but the foaming resistance increases and the thermal insulator may not fill completely
Solution Approach 1:
The patent divides the single foaming injection hole into multiple foaming injection holes positioned at different locations (front surface, rear surface, and side surfaces) of the frame assembly. This segmentation allows the thermal insulator to be injected from multiple directions simultaneously, reducing the effective foaming path length from each injection point and ensuring complete filling of the foaming space without increasing overall foaming resistance.
2Productivity
If the foaming path is shortened to improve manufacturing efficiency, then the foaming process becomes faster, but the thermal insulator may leak through the injection hole
Solution Approach 1:
By segmenting the injection system into multiple injection holes distributed across different surfaces of the frame assembly, the patent achieves a balance between foaming speed and leakage prevention. Each injection hole has a shorter individual foaming path that prevents leakage, while the combined effect of multiple holes maintains high productivity through parallel foaming action.
Solution Approach 2:
The patent applies different injection strategies to different locations of the frame assembly. Injection holes are strategically positioned at the front surface, rear surface, and side surfaces based on the local foaming requirements and accessibility, allowing optimized foaming control at each location while preventing leakage through localized path management.
3Manufacturing precision
If multiple foaming injection holes are provided on different surfaces of the frame assembly, then the thermal insulator distribution is improved and filling is complete, but the device complexity increases
Solution Approach 1:
The patent segments the injection function across multiple surfaces of the frame assembly rather than concentrating all injection holes in one location. This spatial segmentation improves thermal insulator distribution by ensuring uniform filling from all directions, while the modular arrangement of injection holes on standard surfaces keeps the manufacturing complexity manageable.
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 approach reduces foaming resistance, ensures complete filling of the thermal insulator, and prevents leakage, enhancing the overall insulation performance and manufacturing efficiency of the refrigerator doors.
Implementation Method 1
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
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.