Vacuum Nozzle Brush Roll Cleaning for Hair Entanglement Removal
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Solution Overview
Problem
Existing vacuum cleaner nozzles with rotatable brush rolls face challenges in efficiently removing entangled fibrous materials like threads and hairs due to the high force required to dislodge them, which can impair the brush roll's rotation and cleaning efficiency.
Innovation Solution
A vacuum cleaner nozzle design featuring a rotatable member with a cleaning arrangement that includes radially projecting members with resilient sheet members, allowing for effective entanglement removal through a pivoting mechanism and resilient contact during rotation, reducing the impact on rotational speed while maintaining normal cleaning operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cleaning member presses against the rotatable member to remove entangled articles, then the cleaning effectiveness is improved, but the power required to rotate the brush roll increases significantly
Solution Approach 1:
The cleaning member is designed to be movable between a resting position and a cleaning position, allowing it to dynamically adjust its contact with the rotatable member. This dynamic positioning enables cleaning action only when needed, reducing continuous power consumption while maintaining cleaning effectiveness when entanglements occur
Solution Approach 2:
The resilient sheet member changes its contact pressure parameter based on rotation speed - providing sufficient friction for cleaning at normal speeds, but reducing contact force when rotation slows down to prevent excessive power consumption and brush roll stopping
2Reliability
If a significant force is applied to thread off entangled threads by a cleaning member, then the entanglement removal is improved, but the rotational speed of the brush roll decreases
Solution Approach 1:
The cleaning member's movable design allows it to engage with the rotatable member only when entanglements are detected, rather than maintaining constant contact. This dynamic engagement removes entanglements effectively while minimizing continuous impact on rotational speed
Solution Approach 2:
The resilient sheet member adjusts its friction parameter based on rotation speed, providing high friction for effective entanglement removal at normal speeds, but automatically reducing friction when speed drops to maintain rotational momentum
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 enables efficient removal of entangled articles with reduced power requirements, ensuring effective cleaning without significantly slowing down the brush roll's rotation, thus improving the overall cleaning performance and user experience.
Implementation Method 1
The cleaning member includes a resilient sheet member capable of providing a resilient contact with at least one segment of the at least one support surface in the at least one cleaning position during rotation of the rotatable member
Data Source
AI summary
A vacuum cleaner nozzle having a rotatable member for picking up particles from a surface, and a cleaning arrangement for removing articles entangled to the rotatable member. The rotatable member rotates around a longitudinal axis. The cleaning arrangement has at least one support surface provided on a radially projecting member, and at least one cleaning member movable between a resting position in which the cleaning member is arranged at a distance from the support surface and a cleaning position in the vicinity of the rotatable member. In the cleaning position, the cleaning member cooperates with the support surface to remove entangled articles from the rotatable member during rotation of the rotatable member. The cleaning member includes a resilient sheet member capable of providing resilient contact with at least one segment of the at least one support surface in the cleaning position during rotation of the rotatable member.