Cleaning apparatus with combing unit for removing debris from cleaning roller
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Solution Overview
Problem
Vacuum cleaners face challenges with debris entanglement on cleaning rollers, particularly hair, leading to reduced suction efficiency and potential motor damage, and existing structures for debris removal are often ineffective or interfere with the operation of the surface cleaning head.
Innovation Solution
A cleaning apparatus with a combing unit featuring spaced protrusions or teeth extending into the cleaning roller, angled to align with the direction of rotation, designed to intercept and remove debris with minimal impact on operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a leading roller is used to direct debris into the suction conduit opening, then debris capture efficiency is improved, but debris becomes entangled around the roller reducing suction efficiency
Solution Approach 1:
The combing unit is positioned to engage the leading roller before debris can become significantly entangled, performing preliminary debris removal. The protrusions are arranged to continuously comb the roller surface as it rotates, preventing debris buildup that would otherwise block the suction conduit opening and reduce suction efficiency.
2Object-generated harmful factors
If projections are used to engage the roller for debris removal, then debris removal capability is improved, but the structure interferes with surface cleaning head operation
Solution Approach 1:
The combing unit features protrusions with specific local characteristics - spaced apart with gaps between them, allowing the roller to rotate freely while still effectively removing debris. The protrusions are positioned to engage only the necessary portions of the roller, minimizing interference with the overall operation of the surface cleaning head while maintaining effective debris removal capability.
Data Source
AI summary
A cleaning apparatus includes a combing unit including a series of spaced protrusions or teeth extending into a cleaning roller for preventing build up and removing debris (such as hair, string, and the like). The protrusions extend along a substantial portion of the cleaning roller and extend partially into the cleaning roller to intercept the debris as it passes around the roller. The protrusions have angled leading edges that are not aligned with a rotation center of the cleaning roller and are directed into or against a direction of rotation of the cleaning roller. The combing unit and protrusions have a shape and configuration designed to facilitate debris removal from the cleaning roller with minimal impact on the operation of the cleaning apparatus. The cleaning apparatus may include a surface cleaning head of an upright vacuum cleaner or sweeper or a robotic vacuum cleaner.