Ventilation Fan Inclined Frame Nested Packaging
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Solution Overview
Problem
Conventional ventilation fans require excessive packing materials and installation costs due to large component volumes and the need for additional mounting brackets or hangers, and are limited by the requirement for uniform joist spacing.
Innovation Solution
A ventilation fan design with a rectangular frame having inclined side surfaces, allowing for reduced packaging volume and easier installation by accommodating varying joist spacings without the need for additional mounting hardware, featuring a larger opening at the bottom surface and smaller top surface, and utilizing elastic material for screw fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional ventilation fans use rectangular frames with parallel side surfaces, then the frame structure is simple and easy to manufacture, but the packaging volume is large requiring more packing materials
Solution Approach 1:
The frame is designed with inclined side surfaces allowing nested packaging where one frame can be placed inside another or adjacent frames, reducing the overall packaging volume. The inclination angle of 5-15 degrees enables the frames to interlock and fit together tightly, eliminating wasted space in the packaging.
2Reliability
If conventional ventilation fans use brackets or hangers for mounting, then the frame can be securely mounted to joists, but the cost for mounting hardware and installation time increase
Solution Approach 1:
The mounting function is merged directly into the frame structure itself. The inclined side surfaces of the frame can be directly inserted into corresponding slots or channels in the joists, eliminating the need for separate brackets or hangers. This integration maintains mounting security while reducing hardware requirements and installation complexity.
3Ease of operation
If conventional ventilation fans require uniform joist spacing to match frame width, then the mounting method is simple, but the adaptability to different building structures is limited
Solution Approach 1:
The frame incorporates adjustable mounting components that can adapt to different joist spacings. The inclined side surfaces can be positioned at different angles or depths within the joist slots, allowing the same frame design to accommodate various building structures with different joist spacing requirements while maintaining simple mounting procedures.
4Ease of manufacture
If conventional ventilation fans use standard rectangular frames, then the manufacturing is straightforward, but the packaging requires excessive materials and space
Solution Approach 1:
The inclined side surfaces enable nested packaging arrangements where multiple frames can be stacked or interlocked efficiently. This design allows frames to fit within each other or alongside each other with minimal gaps, dramatically reducing packaging material consumption and shipping space requirements while maintaining standard manufacturing processes.
Data Source
AI summary
A ventilator includes an opening formed on a bottom surface, a rectangular frame provided with a flange, a volute provided with a fan motor inside, and a connector connected to an air outlet of the volute. Four side surfaces of the frame excluding the top surface and the bottom surface tilt towards the outer lower side in a direction from the top surface to the bottom surface, and the opening area of the bottom surface is larger than that of the top surface. The ventilator saves packaging and installation costs, and further facilitates installation between the roof and the ceiling.