Dryer Vent with Gravity Door and Chute Design to Prevent Bird Nesting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bird and animal deterrent vent devices for building air outlets are complex, expensive, and prone to malfunction, leading to airflow restrictions, debris accumulation, and potential fire hazards, while also failing to effectively prevent nesting and being durable and easy to install.
Innovation Solution
A vent apparatus with a simple metal construction featuring a mount, housing, and door design that includes an angled chute and overlapping flanges to discourage bird access, made from relatively inexpensive materials with a robust and efficient assembly process, ensuring effective airflow and preventing nesting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a rotating paddlewheel or fan blade is used to block bird entry, then bird deterrence is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent replaces the expensive, complex rotating paddlewheel with a simple, inexpensive fixed screen or mesh that serves the same bird deterrence function. This simple barrier is cost-effective and eliminates the need for moving parts, motors, or complex mechanical assemblies while still preventing bird entry effectively.
Solution Approach 2:
The patent extracts the essential function of bird deterrence from the complex rotating mechanism and implements it through a simple static screen or mesh. By removing the rotating components entirely, the design achieves bird protection without the associated complexity, cost, and maintenance issues.
2Object-affected harmful factors
If a rotating paddlewheel is used to frighten birds away, then bird deterrence is improved, but reliability decreases due to hanging up or stopping
Solution Approach 1:
The patent replaces the unreliable rotating mechanism with a simple, robust static screen or mesh that has no moving parts. This eliminates the risk of hanging up, stopping, or mechanical failure while maintaining effective bird deterrence through the physical barrier.
Solution Approach 2:
By removing the rotating components entirely and using a fixed screen, the patent eliminates the reliability issues associated with moving parts. The static design ensures consistent performance without mechanical failure, while still achieving the bird deterrence function.
3Strength
If complexly shaped parts with overlapping flanges are used, then structural integrity is improved, but manufacturing cost and assembly complexity increase
Solution Approach 1:
The patent replaces complex injection-molded plastic parts with simple, flat sheets of metal or rigid material. These simple components are cut, bent, or assembled into the required shape, eliminating the need for expensive injection molding tools and complex multi-part assemblies while maintaining sufficient structural integrity.
Solution Approach 2:
The patent divides the vent cover into simple, flat components that can be easily manufactured and assembled. Rather than using complex monolithic parts, the design uses segmented flat sheets that are simple to produce and assemble, reducing manufacturing cost and complexity.
4Strength
If complexly shaped parts are used, then structural integrity is improved, but assembly time and quality control effort increase
Solution Approach 1:
The patent uses simple flat sheets instead of complex shaped parts, which dramatically reduces assembly time. The flat components can be quickly cut, bent, and assembled without requiring complex alignment, tolerance control, or specialized assembly procedures.
Solution Approach 2:
By using segmented flat components rather than complex monolithic parts, the patent simplifies the assembly process. The flat sheets can be easily positioned and secured with minimal alignment requirements, reducing assembly time and quality control efforts.
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 a cost-effective, durable, and efficient vent system that prevents bird and animal entry, reduces nesting risks, and ensures reliable airflow while being easy to install and maintain, addressing the limitations of existing devices.
Implementation Method 1
a door pivoted to the mount for movement by gravity to a closed position but being movable to an open position when air flows out from the air outflow passageway
Implementation Method 2
a door pivoted to the mount for movement by gravity to a closed position
Data Source
AI summary
A vent apparatus comprises a mount with air flow opening for mounting to a wall, a housing covering the mount, and a door pivoted to fall by gravity to a closed position but being movable to an open position when air flows from the air outflow passageway. The housing forms a downwardly and outwardly open chute extending well below a bottom of the mount and door, thus discouraging birds from approaching the air flow opening. The door and mount include bottom flanges that overlap when the door is in the closed position, further discouraging bird entry. The mount, housing and door are all metal with stiffening bends that are relatively simple construction, making assembly tow cost and providing a reliable function. The housing does not include large horizontal surfaces, thus discouraging birds and animals from building a nest in or on the housing.