Vacuum Cleaner Dust Storage with Compression and Guide Screw
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Solution Overview
Problem
Conventional dust collecting apparatuses for vacuum cleaners face issues with dust blockage at the inlet, requiring additional power sources and complex motor control to operate dust compression and brushing devices simultaneously, leading to inefficiencies and design challenges.
Innovation Solution
A dust collecting apparatus with a compression device that rotates clockwise and counterclockwise using a single power source, featuring a gear unit and screw with guide vanes to collect dust from the inlet, allowing simultaneous operation of dust compression and brushing without additional power sources, enhancing dust collection performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a multi-cyclone structure is used to collect dust, then dust collection performance is improved, but dust blocks the inlet of the dust storage unit
Solution Approach 1:
The patent extracts the blocked dust from the inlet area by providing a separate dust collecting unit positioned below the inlet. This unit captures dust that would otherwise block the inlet, separating the dust collection function from the air intake function and eliminating the blockage problem while maintaining high dust collection performance.
2Ease of operation
If additional power sources are provided to rotate the inlet for dust discharge, then dust discharge capability is improved, but power loss increases and design space is reduced
Solution Approach 1:
The patent implements self-service by using the suction force generated during normal vacuum operation to automatically discharge dust from the dust collecting unit. The suction force creates a negative pressure that draws dust out through the discharge outlet, eliminating the need for additional motors or power sources while maintaining effective dust discharge capability.
3Device complexity
If a single motor is used to drive both compression plate and dust brushing device, then device complexity is reduced, but simultaneous operation of both devices becomes difficult
Solution Approach 1:
The patent extracts the dust discharge function from the motor-driven system by utilizing the suction force for automatic dust discharge. This separates the compression function (driven by motor) from the discharge function (driven by suction force), allowing the compression plate to operate continuously without being constrained by motor rotation direction, thereby enabling simultaneous operation with reduced complexity.
4Productivity
If the inlet is rotated to drop blocked dust, then dust collection performance is improved, but another power source is required increasing device complexity
Solution Approach 1:
The dust collecting unit operates self-service by utilizing the suction force generated during normal vacuum operation to automatically discharge dust. This eliminates the need for additional motors or power sources while maintaining effective dust discharge capability, resolving the contradiction between improved dust collection performance and reduced device complexity.
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 apparatus enables efficient dust collection and discharge by using a single power source for both dust compression and brushing, improving dust collection performance and reducing the complexity of motor control, while preventing dust scattering and unintended discharge.
Implementation Method 1
a first cyclone installed in a first case, and configured to separate dust from air introduced together with foreign materials and to discharge the dust to a first dust storage unit
Implementation Method 2
a second cyclone mounted above the first cyclone, and configured to separate fine dust from the air having dust separated therefrom by the first cyclone, and to discharge the fine dust to a second dust storage unit
Data Source
AI summary
The present invention provides a dust collecting apparatus for a vacuum cleaner, comprising: a first cyclone installed in a first case and configured to separate dust from air introduced thereinto together with foreign substances and to discharge the separated dust to a first dust storage unit; a second cyclone mounted above the first cyclone and configured to separate fine dust from the air from which the dust is separated by the first cyclone and to discharge the separated fine dust to a second dust storage unit; a compression device configured such that at least a part thereof performs normal rotation in one direction and reverse rotation in the direction opposite to that of the normal rotation along the outer peripheral surface of a second case having the second dust storage unit therein to compress the dust stored in the first dust storage unit; a screw rotatably installed above the compression device and having a guide vane spirally extending along the outer periphery thereof to guide the collection of dust into the first dust storage unit; a driving unit that transmits a driving force to the compression device to selectively enable the normal rotation and the reverse rotation of the compression device; and a gear unit installed between the compression device and the screw to enable the screw to perform normal rotation while the compression device performs the normal rotation and the reverse rotation.