Removable Air Diffuser Cap for Vacuum Cleaner Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vacuum cleaners generate high-speed airflows that produce disturbing noise levels, and existing noise reduction methods, such as mufflers, can be inconvenient and limit access for servicing when switching between vacuum and blower modes.
Innovation Solution
A vacuum cleaner design featuring a cap assembly with sound-influencing material, such as reticulated foam, that is removably positioned within a flow path to direct airflow from a blower port to an exhaust port, reducing noise and allowing easy access for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a muffler is installed at the blower port to reduce noise during vacuum mode, then noise levels are reduced, but the muffler projects outward and becomes an inconvenient obstacle during vacuum mode operation
Solution Approach 1:
The device is divided into separate functional components: a cap assembly that can be attached to or removed from the blower port. The sound-influencing material is contained within the removable cap, separating the noise reduction function from the blower port itself, allowing the port to remain clear during operation.
Solution Approach 2:
The cap assembly transitions from a static, permanently attached muffler to a dynamic, removable component. It can be installed when noise reduction is needed (vacuum mode) and removed when the blower port needs to be used (blower mode), adapting to different operational requirements.
2Object-affected harmful factors
If sound-absorbent material is placed inside a duct leading to the exhaust port, then noise is reduced without projecting outward, but access to the material for cleaning or replacement is limited or prevented
Solution Approach 1:
The sound-influencing material is segmented from the main housing and placed within a separate, removable cap assembly. This allows the material to be accessed by simply detaching the cap, enabling easy cleaning or replacement without disassembling the housing or ductwork.
Solution Approach 2:
The cap assembly serves as an intermediary component that provides access to the sound-influencing material. It acts as a removable container that can be detached to allow maintenance of the material while keeping the material positioned within the airflow path during operation.
3Device complexity
If the blower port is used as the exhaust port for vacuum mode, then the same port serves both functions, but the muffler must be removed for blower mode operation creating inconvenience
Solution Approach 1:
The cap assembly provides a dynamic solution that allows the single blower port to serve multiple functions. When attached, it enables vacuum mode with noise reduction; when removed, it enables blower mode with full port access, eliminating the need for separate exhaust and blower ports.
Solution Approach 2:
The blower port is designed with multi-functionality, serving as both the exhaust port for vacuum mode (when cap is attached) and the output port for blower mode (when cap is removed). The cap assembly itself becomes a universal component that enables both operational modes through its presence or absence.
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 effectively reduces noise levels during vacuum mode operation while maintaining convenience for servicing by redirecting airflow through sound-influencing material, minimizing noise and accessibility issues when switching between modes.
Implementation Method 1
a sound-influencing material removably held to the cap head and disposed within the flow path to reduce noise effected by the airflow
Implementation Method 2
sound-influencing material, such as reticulated foam, that is removably positioned within a flow path to direct airflow
Data Source
AI summary
Disclosed herein is a vacuum cleaner having a housing defining first and second ports. The vacuum cleaner also includes a cap assembly. The cap assembly includes a cap head to close the first port such that airflow is directed via a flow path to the second port, a sound-influencing material, the sound-influencing material removably held to the cap head and disposed within the flow path to reduce noise effected by the airflow. The flow path is configured to cause the airflow to pass through the sound-influencing material and the flow path to the second port. The sound-influencing material is removable to allow cleaning of the sound-influencing material. The sound-influencing material may include a reticulated foam roll disposed in the frame to diffuse the discharge airflow.