Sound-proofed Waste Container Air Gap Lining
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Solution Overview
Problem
Waste collection containers placed on public highways, especially those for glass collection, often cause noise pollution due to their design, and existing solutions require large, expensive soundproofing materials to achieve satisfactory soundproofing.
Innovation Solution
Incorporating an air gap between the outer side walls and a flexible lining with ribs, which utilizes the 'mass-spring-mass' acoustic principle to dampen noise without the need for extensive sound-absorbing materials, allowing for effective soundproofing while maintaining a large storage volume and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If large panels of soundproofing material are used to achieve satisfactory soundproofing, then acoustic performance is improved, but cost and material quantity increase
Solution Approach 1:
The patent introduces an air gap as an intermediary layer between the external side walls and the internal lining. This air gap acts as a acoustic mediator that dampens noise transmission without requiring large quantities of soundproofing material. The air layer works in conjunction with the mass-spring-mass principle, where the air serves as the 'spring' element between the two mass layers (side walls and lining), achieving effective soundproofing with minimal material usage.
Solution Approach 2:
The patent changes the physical parameter of the container structure by introducing a spatial dimension (air gap thickness) rather than relying solely on material thickness. By optimizing the distance between the side wall and lining, the system achieves soundproofing effectiveness that is directly linked to the air gap thickness parameter, allowing satisfactory acoustic performance without excessive soundproofing material.
2Object-affected harmful factors
If the distance between side wall and lining is increased to optimize soundproofing, then acoustic performance is improved, but storage volume is reduced
Solution Approach 1:
The patent employs a flexible lining that can adapt to the container's internal geometry. This flexible shell approach allows the lining to conform to the available space while maintaining the necessary air gap distance for soundproofing. The flexibility enables the system to achieve optimal acoustic performance without significantly compromising storage volume, as the lining can adjust to maximize space utilization.
Solution Approach 2:
The patent introduces dynamic adaptability through the flexible lining that can change its configuration based on waste volume. When waste is introduced, the lining can press against the side wall, dynamically adjusting the air gap thickness. This dynamic behavior ensures that soundproofing is maintained in areas where the air gap exists, while minimizing space loss in areas where waste fills the container.
3Object-affected harmful factors
If a rigid lining is used to maintain air gap distance, then soundproofing is improved, but manufacturing complexity and positioning difficulty increase
Solution Approach 1:
The patent uses a flexible lining material that eliminates the need for complex rigid support structures to maintain the air gap. The flexibility of the lining allows it to be easily positioned and conform to the container's internal shape without requiring precise alignment or complex attachment mechanisms, significantly simplifying manufacturing while maintaining soundproofing effectiveness.
Solution Approach 2:
The flexible lining serves itself by automatically conforming to the container's geometry and maintaining appropriate spacing from the side walls through its own flexibility. This self-adjusting property eliminates the need for external bracing elements or complex positioning systems, making the manufacturing process simpler and more cost-effective while achieving the desired air gap for soundproofing.
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
The solution provides effective soundproofing without the use of large quantities of soundproofing material, making the container both affordable and efficient in noise reduction, while maintaining a substantial storage capacity.
Implementation Method 1
it is the air located between the lining and the side wall that makes it possible to realize the known acoustic principle of 'mass-spring-mass', according to which the air is used as a damping spring trapped between two insulating walls
Implementation Method 2
panels made of foam, rubber, or fibrous material attached to the walls, particularly the side walls of the tank. These panels absorb and/or dampen noise due to the material from which they are made
Data Source
Figure 1
Figure 2~3
AI summary
The subject of the invention is a waste collection container (10) comprising a waste storage bin (12) having at least one external lateral wall (16), the container also comprising a lining (42) fitted inside the bin to extend along the external lateral wall(s), and spacing means (46) for maintaining a predetermined distance between the lateral wall(s) and the lining.