Cyclonic Vacuum Layout With External Screen for Easy Maintenance
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Solution Overview
Problem
Existing vacuum cleaners with cyclonic filtration systems require frequent cleaning or replacement of internal screens or filters to maintain efficiency, which can be inconvenient and reduce usage time due to clogging issues, especially with hair and larger matter.
Innovation Solution
A surface cleaning apparatus design featuring a cyclone with an external filtration chamber and screen, allowing for easy access and cleaning without opening the cyclone chamber, and a large external screen that can be up to 20-50 times the cyclone air outlet's cross-sectional area, reducing the need for internal cleaning and extending usage time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an internal screen or filter is placed inside the cyclone chamber to prevent hair and larger matter from traveling downstream, then the cyclone's ability to separate particulate matter is improved, but the screen or filter becomes clogged and requires frequent cleaning or replacement
Solution Approach 1:
The screen is extracted from the internal cyclone chamber environment and relocated to an external filtration chamber. This allows the screen to be accessed and cleaned independently without opening the cyclone chamber, thereby maintaining cyclone separation efficiency while reducing maintenance inconvenience. The screen remains functional in preventing hair and larger matter from traveling downstream but is now externally accessible.
Solution Approach 2:
An external filtration chamber is introduced as an intermediary structure between the cyclone chamber and the downstream components. This chamber houses the screen and can be opened independently via a separate access door, serving as a mediator that protects the cyclone chamber from direct maintenance access while still performing the filtration function.
2Ease of repair
If the cyclone chamber is made openable for cleaning, then the cyclone can be emptied and maintained, but the cyclone's sealing and structural integrity may be compromised
Solution Approach 1:
The vacuum cleaner system is segmented into separate accessible chambers: the cyclone chamber and the filtration chamber. Each chamber has its own access mechanism - the cyclone chamber remains sealed for structural integrity while the filtration chamber has a separate access door for screen maintenance. This segmentation allows independent access to each component without compromising the other's sealing or structural properties.
3Object-affected harmful factors
If a shroud, screen or filter is placed in covering relationship to the cyclone air outlet, then hair and larger matter are inhibited from traveling downstream, but the shroud, screen or filter may become clogged and require cleaning
Solution Approach 1:
The screen is extracted from the internal cyclone chamber and placed in an external filtration chamber. This allows the screen to be cleaned by simply opening the filtration chamber access door without the time-consuming process of disassembling or accessing the cyclone chamber. The screen continues to inhibit hair and larger matter from traveling downstream while maintenance time is significantly reduced.
Solution Approach 2:
The screen is positioned in the filtration chamber upstream of the cyclone air outlet, performing preliminary filtration of hair and larger matter before they can clog the cyclone chamber or downstream components. This preliminary action protects the cyclone system while the external screen can be quickly maintained.
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 external filtration system enhances cleaning efficiency by preventing clogging and allowing for prolonged use without screen maintenance, while maintaining the cyclone's size and efficiency by eliminating the need for internal cleaning or filter replacement.
Implementation Method 1
a filtration apparatus having a cyclone downstream from the dirty air inlet, the cyclone having a cyclone air outlet
Implementation Method 2
The use of a cyclone, or multiple cyclones connected in parallel or series, is known to be advantageous in the separation of particulate matter from a fluid stream
Data Source
AI summary
A surface cleaning apparatus, which in one embodiment is a hand held vacuum cleaner, comprises a cyclone and a suction motor wherein the cyclone air outlet and the suction motor inlet are positioned towards the same end of the surface cleaning apparatus whereby air exiting the cyclone travels laterally and then axially to the suction motor inlet. A surface cleaning apparatus comprises a cyclone and a suction motor wherein the suction motor is positioned rearward of the cyclone and the cyclone air outlet is positioned at a lower end of the cyclone whereby air exiting the cyclone travels laterally and then axially towards the suction motor inlet.