Surface cleaning apparatus with debris ejector
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surface cleaning apparatuses, such as vacuum cleaners, face challenges in efficiently disposing of accumulated debris from collection assemblies, often requiring manual removal or shaking due to debris becoming stuck, especially when relying solely on gravity for disposal through a bottom dirt outlet.
Innovation Solution
A debris ejector mechanism is introduced, comprising a reciprocally movable ejector plate and a push rod, which applies force to eject debris from the collection assembly, ensuring effective removal without manual intervention by utilizing a telescoping push rod to actuate the ejector plate and clear debris from the exhaust grill.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If debris disposal relies solely on gravity through a bottom dirt outlet, then the device complexity is reduced, but debris removal efficiency deteriorates as debris becomes stuck and requires manual removal
Solution Approach 1:
The debris ejector is automatically actuated by the existing suction source operation, eliminating the need for manual user intervention. The ejector plate moves reciprocally on its own to clear debris from the exhaust grill, making the system self-servicing rather than requiring external manual action.
Solution Approach 2:
The debris ejection function is merged with the existing suction source and collection assembly structure. The ejector plate utilizes the same housing space and is actuated by the same power source that drives the suction, combining multiple functions into a unified system rather than adding separate independent mechanisms.
2Ease of operation
If a reciprocally movable debris ejector is added to the collection assembly, then debris removal efficiency is improved, but the device complexity increases
Solution Approach 1:
The ejector plate serves multiple functions: it clears debris from the exhaust grill during its downward stroke and simultaneously pushes debris toward the dirt outlet during its upward stroke. This multi-functionality is achieved within a single simple component that utilizes the reciprocating motion already present in the system.
Solution Approach 2:
The ejector plate is designed as a thin, flexible component that can move reciprocally within the housing. Its simple plate structure with an opening for the exhaust grill allows it to flex and move easily without requiring complex mechanical linkages, reducing the overall structural complexity.
3Productivity
If the ejector plate passes in close proximity to the exhaust grill, then debris removal effectiveness is improved, but the risk of debris accumulation in the gap increases
Solution Approach 1:
The ejector plate performs periodic reciprocating motion, alternating between downward and upward strokes. During the downward stroke, it clears debris from the exhaust grill surface. During the upward stroke, it creates a scraping action that prevents debris from becoming lodged in the gap between the plate and grill, using the periodic motion to continuously clear potential accumulation points.
Data Source
AI summary
A surface cleaning apparatus includes a separating and collection assembly defining a collection chamber which receives debris and has a debris outlet, and a debris ejector reciprocally moveable within the collection chamber for vertical displacement relative to an exhaust grill. A push rod can be used to displace the debris ejector relative to the exhaust grill.