Cyclone Chamber Layout Without Vortex Finder Back Pressure
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Solution Overview
Problem
Conventional vacuum cleaners with smaller suction motors produce less suction, reducing cleaning efficiency due to back pressure from traditional vortex finders, which also increase weight and reduce battery life in battery-operated models.
Innovation Solution
The design eliminates or reduces the size of the vortex finder, using a screen in the cyclone chamber to prevent hair and larger particles from exiting, allowing for improved airflow and cleaning performance without the weight and power constraints of traditional vortex finders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a smaller suction motor is used to reduce weight, then the weight of the vacuum cleaner is reduced, but the suction and cleaning efficiency deteriorate
Solution Approach 1:
The vortex finder is removed from the cyclone chamber, eliminating the component that created back pressure and restricted airflow. This extraction allows the smaller motor to operate more efficiently by removing the flow restriction, thereby maintaining suction power while reducing overall system weight.
Solution Approach 2:
The design changes the airflow parameters by eliminating the vortex finder, which alters the pressure distribution and flow velocity within the cyclone chamber. This parameter change enables smaller motors to achieve adequate suction by optimizing the airflow path and reducing restrictive elements.
2Reliability
If a traditional vortex finder is used to prevent hair and larger particles from exiting, then particle separation is improved, but back pressure increases and airflow velocity decreases
Solution Approach 1:
The vortex finder is completely removed from the cyclone chamber, eliminating the source of back pressure. The screen alone is sufficient to prevent hair and larger particles from exiting while allowing free airflow through the cyclone chamber, thus maintaining high airflow velocity without compromising particle separation.
Solution Approach 2:
A screen is used instead of a solid vortex finder structure. The screen's porous nature allows airflow to pass through freely while still capturing hair and larger particles, thereby reducing back pressure and maintaining airflow velocity while achieving effective particle separation.
3Productivity
If the vortex finder is eliminated to reduce back pressure and improve airflow, then cleaning efficiency is improved, but the ability to prevent hair and larger particles from exiting may be compromised
Solution Approach 1:
The vortex finder is removed to eliminate back pressure and improve airflow velocity, directly enhancing cleaning efficiency. The screen is positioned to provide the necessary particle separation function, capturing hair and larger particles while allowing free airflow through the cyclone chamber.
Solution Approach 2:
The screen serves as the primary particle separation mechanism, using its porous structure to filter hair and larger particles from the airflow. This approach maintains effective particle separation while allowing unrestricted airflow through the cyclone chamber, thereby preserving cleaning efficiency.
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
This configuration enhances cleaning efficiency by maintaining airflow velocity and reducing back pressure, while also minimizing the weight and power requirements of the suction motor, particularly in battery-operated vacuum cleaners.
Implementation Method 1
Air is drawn into the vacuum cleaners through a dirty air inlet and conveyed to a cyclone inlet. The rotation of the air in the cyclone results in some of the particulate matter in the airflow stream being disentrained from the airflow stream.
Implementation Method 2
The rotation of the air in the cyclone results in some of the particulate matter in the airflow stream being disentrained from the airflow stream.
Implementation Method 3
a screen is provided around the opening of the vortex finder to prevent hair and larger dirt particles from exiting the vacuum cleaner
Data Source
AI summary
A surface cleaning apparatus has a dirt collection chamber that is external to a cyclone chamber. The dirt collection chamber has a sidewall having a first sidewall portion that extends outwardly away from the cyclone chamber sidewall and a second sidewall portion that extends from the first sidewall portion towards a distal end of the dirt collection chamber. The cyclone chamber has a dirt outlet that faces the cyclone chamber sidewall.