Ventilation Adapter Structure for Multi-Diameter Pipe Sealing
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Solution Overview
Problem
Existing ventilation devices struggle with installing pipes of different diameters due to adapter designs that are specific to a single diameter, leading to air leaks and increased noise and resistance.
Innovation Solution
The ventilation device features concentric pipe coupling parts with protruding circular rings and an air guide structure, allowing for easy installation of pipes with varying diameters while ensuring a smooth air path and effective sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the adapter is designed with a fixed pipe coupling part diameter, then the manufacturing precision is improved, but the adaptability deteriorates
Solution Approach 1:
The pipe coupling part is divided into multiple sections with different diameters along its length, allowing the adapter to accommodate pipes of various diameters. Each section can interface with pipes of corresponding diameter, transforming a single-diameter design into a multi-diameter solution while maintaining manufacturing precision through standardized segmented construction.
Solution Approach 2:
The adapter is designed with universal compatibility across multiple pipe diameters by incorporating a pipe coupling part that can interface with different pipe sizes. This multi-functional design allows a single adapter model to serve multiple installation scenarios, eliminating the need for multiple adapter variants while maintaining precise manufacturing standards.
2Ease of operation
If the pipe coupling part is provided with positioning structures (protruding ring and protrusions), then the ease of operation is improved, but the sealing reliability deteriorates
Solution Approach 1:
The positioning function is segmented from the sealing function. Positioning protrusions provide mechanical alignment and insertion guidance, while a separate sealing structure (such as a sealing ring or gasket) ensures air-tight connection. This separation allows each function to be optimized independently without compromising the other.
Solution Approach 2:
A sealing element acts as an intermediary between the pipe coupling part and the pipe. This intermediary component ensures reliable sealing while allowing the positioning structures to perform their mechanical alignment function. The sealing intermediary compensates for any gaps or irregularities, maintaining sealing reliability despite the presence of positioning features.
3Ease of operation
If the adapter has gaps for engagement structures, then the ease of operation is improved, but the object-generated harmful factors worsen due to air leakage and noise
Solution Approach 1:
The engagement structure is segmented into discrete positioning points rather than continuous gaps. This allows localized engagement for easy installation while minimizing the total area of potential leakage paths. The segmented approach maintains mechanical engagement functionality while reducing the cumulative harmful effects of gaps.
Solution Approach 2:
Sealing elements are positioned at the engagement gaps to act as intermediaries that prevent air leakage and noise transmission. These sealing intermediaries allow the engagement structure to maintain its mechanical function for easy installation while blocking the harmful effects that would otherwise occur through the gaps.
Data Source
AI summary
A ventilation device comprises: a body, a fan disposed In the body, and an adapter connected with an air outlet of the body. Two or more pipe coupling parts are disposed in sequence from a side of an air Inlet of the adapter to a side of an air outlet of the adapter, and each pipe coupling part is provided with a protruding circular ring with a diameter larger than that of the respective pipe coupling part at a root thereof. An air guide structure Is disposed in the adapter, a pipe is fitted over the pipe coupling part and Is abutted against the protruding circular ring located at the root to be fixed, and the air guide structure Is engaged to an inside of the protruding circular ring of the adapter.