Hand Vacuum Cyclone Layout for Lower Backpressure Suction
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Solution Overview
Problem
Conventional hand vacuum cleaners often face inefficiencies due to complex air flow paths and backpressure issues, which can lead to reduced suction power and increased maintenance needs, particularly in cyclonic cleaning stages where dirt collection and air filtration are compromised.
Innovation Solution
A hand vacuum cleaner design featuring a uniflow cyclone with a front cyclone air inlet and rear air outlet, where the cyclone axis extends rearwardly, and a dirt collection chamber external to the cyclone, optimizing air flow directionality and reducing backpressure by minimizing bends in the air flow path, and incorporating lateral stability members for enhanced structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cyclonic cleaning stages are used with complex air flow paths, then dirt collection and air filtration are achieved, but backpressure increases and suction power decreases
Solution Approach 1:
The cyclone is divided into distinct functional zones: a separation chamber for dirt-air separation, a filtration chamber for air filtering, and a collection chamber for dirt storage. This segmentation allows each zone to perform its specific function efficiently, reducing overall air flow resistance while maintaining effective cleaning and filtration
Solution Approach 2:
The patent transitions from conventional two-dimensional planar air flow paths to a three-dimensional vertical arrangement where air flows upward through the cyclone axis. This vertical dimensionality change eliminates the need for complex horizontal bends and redirects, reducing backpressure while maintaining effective separation and filtration
2Reliability
If cyclone inlet is positioned at the bottom, then dirt collection is effective, but dirt blocks the inlet and requires maintenance
Solution Approach 1:
Instead of positioning the cyclone inlet at the bottom as in conventional designs, the patent inverts the arrangement by positioning the inlet at the top and directing air flow downward along the cyclone wall. This inversion prevents dirt accumulation at the inlet, eliminating blocking issues and reducing maintenance requirements
Solution Approach 2:
The patent extracts the dirt collection function from the inlet area by providing a separate collection chamber at the bottom of the cyclone. This separation allows the inlet to remain clear for continuous air flow while dirt is collected in the dedicated chamber, preventing blocking at the inlet
3Productivity
If multiple bends are included in air flow path, then compact design is achieved, but backpressure increases and suction power decreases
Solution Approach 1:
The patent utilizes the vertical dimension by arranging components along the cyclone axis rather than requiring horizontal space. Air flows upward through the separation chamber, filtration chamber, and collection chamber in a vertical sequence, eliminating the need for multiple horizontal bends while achieving compact overall size
Solution Approach 2:
The patent merges the separation chamber, filtration chamber, and collection chamber into a single integrated cyclone structure with a common vertical air flow path. This merging eliminates the need for separate housings and connecting ducts with bends, reducing backpressure while maintaining compact dimensions
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 design enhances suction power by simplifying air flow, reduces maintenance needs by preventing dirt from blocking the cyclone inlet, and improves structural stability during use, resulting in a more efficient and user-friendly hand vacuum cleaner.
Implementation Method 1
a cyclone unit comprising a cyclone having a cyclone axis of rotation
Implementation Method 2
cyclone unit comprising a cyclone having a cyclone axis of rotation, a front end having a cyclone air inlet and a longitudinally spaced apart rear end having a cyclone air outlet
Data Source
AI summary
A hand vacuum cleaner comprises a body which houses a suction motor. A handle is provided on a sidewall of the body and extends outwardly therefrom. The handle axis intersects the suction motor. An air treatment member comprises a chamber, which has an openable door and which forms a front face of the hand vacuum cleaner. The air treatment member having an inner hollow member that occupies all of the central portion of the chamber between the front end of the chamber and a rear end of the chamber. The air treatment member has an openable door lock comprising a door release actuator wherein the door is moveable to an open position in which the chamber is opened when the door release actuator is actuated.