Vacuum Cleaner Dust Bin Emptying With Damper-Controlled Plume Reduction
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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 separation module with a rotatably coupled door and dampers that slow the door's opening speed, along with an auxiliary suction nozzle and air diverter valve, is used to reduce dust plumes during emptying by ingesting airborne fine dust and diverting air flow, thereby minimizing dust re-entrainment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the door is opened quickly to empty debris, then the emptying process is faster, but dust plumes are released and fine dust is re-entrained in the working airstream
Solution Approach 1:
The damper is pre-configured on the door mechanism to automatically control the opening speed. When the door is opened to empty debris, the damper gradually increases the opening speed from slow to fast, allowing dust to settle before rapid emptying occurs, thus preventing dust plume release while maintaining efficient emptying
Solution Approach 2:
The door mechanism incorporates a damper that dynamically adjusts the opening speed during the emptying process. The damper transitions the door from a stationary closed position to an open position at a controlled rate, optimizing the balance between emptying efficiency and dust containment
2Ease of operation
If a release mechanism is provided for opening the dirt door, then ease of operation is improved, but dust plumes may be released during opening
Solution Approach 1:
The release mechanism is integrated with the damper system, so that when the user activates the release mechanism to open the dirt door, the damper automatically controls the opening speed to prevent dust plume release, combining ease of operation with dust containment
Solution Approach 2:
The damper acts as an intermediary between the release mechanism and the door, mediating the opening action to control the speed and prevent dust release while maintaining the simplicity of the release mechanism for easy operation
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 dust plumes during emptying, preventing dust from being redeposited on users or surfaces and improving the overall cleaning experience by ensuring more efficient dirt collection and separation.
Implementation Method 1
at least one damper operably coupled with the door and configured to reduce a speed of the door moving to the opened position as compared to an undamped door
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.