Vacuum Dust Collector Emptying With Auxiliary Suction Plume Control
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Solution Overview
Problem
Vacuum cleaners often fail to completely remove dirt from the airstream, and the process of emptying the dirt collector can lead to re-entrainment of dirt and the release of fine dust plumes due to swirling air currents.
Innovation Solution
A vacuum cleaner design incorporating a separation module with an auxiliary suction nozzle and air diverter valve, along with rotational dampers on the door hinge, to ingest airborne dust and reduce plume formation during emptying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dirt collector is emptied by opening the dirt door, then the accumulated dirt can be removed, but fine dust plumes are released due to swirling air currents
Solution Approach 1:
The auxiliary suction nozzle is positioned to create negative pressure at the dirt door opening before and during the emptying process. This preliminary anti-action counteracts the positive pressure that would otherwise cause dust plumes to escape, allowing dirt to be emptied cleanly without releasing fine dust into the environment.
Solution Approach 2:
The auxiliary suction nozzle acts as an intermediary element between the dirt collector interior and the external environment. It provides a controlled pathway for air and dust to be extracted, mediating the emptying process to prevent uncontrolled dust release while still allowing effective dirt removal.
2Ease of operation
If the dirt collector is designed with a removable door for emptying, then dirt can be easily removed, but separated dirt may be re-entrained in the working airstream due to swirling air currents
Solution Approach 1:
The auxiliary suction nozzle creates negative pressure in the dirt collector before the door is opened, counteracting the swirling air currents that would cause re-entrainment. This preliminary anti-action ensures that when dirt is removed, it is drawn through the controlled suction path rather than being swept back into the working airstream.
3Manufacturing precision
If the vacuum cleaner uses high-speed rotational motion for dirt separation, then dirt separation efficiency is improved, but fine dust may become airborne during emptying
Solution Approach 1:
The auxiliary suction nozzle serves as an intermediary control mechanism that manages the transition from high-speed separation to safe emptying. It provides a controlled extraction path that captures fine dust particles, preventing them from becoming airborne during the emptying process while preserving the effectiveness of the high-speed rotational separation.
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
Effectively captures fine dust and reduces dust plume formation during emptying, enhancing the cleaning process by minimizing dust deposition on users and surfaces.
Implementation Method 1
an auxiliary suction nozzle located adjacent at least a portion of a lower end of the separation module housing and adapted for ingesting debris
Implementation Method 2
others use high-speed rotational motion of the air/dirt to separate the dirt by centrifugal force
Data Source
AI summary
A dirt collection and separation module can include a suction air flow around the perimeter of a tank to ingest fine dust that becomes airborne during the emptying process. Additionally, a trash can suction nozzle around a rim, a hand vacuum docking station, and an auxiliary suction nozzle that can fluidly couple the hand vacuum.