Vacuum Cleaner Compression Part Design for Reduced Emptying Frequency

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Solution Overview

Problem

Existing vacuum cleaners face issues with dust bin clogging, inefficient dust compression, and difficulty in cleaning and maintaining the dust separation system, leading to frequent emptying and potential contamination of components.

Innovation Solution

A cleaner design with a dust bin that can be separated from the motor housing, featuring a compression part for dust compaction, a manipulation part for easy cleaning, and a transmission part for smooth operation, ensuring a sufficient interval between the dust bin and cyclone to prevent foreign substance entrapment, and allowing water washability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If the dust bin is separated from the motor housing, then ease of cleaning and maintenance is improved, but sealing force between components deteriorates

Engineering Contradiction:
Improveease of cleaningVSAvoidsealing force
Core Design Contradiction:
Ease of repairVSReliability

Solution Approach 1:

The dust bin is designed as a separable component from the motor housing, allowing users to easily detach and clean the dust bin without disassembling the entire vacuum cleaner. This segmentation improves accessibility for cleaning while maintaining reliable sealing through dedicated sealing structures at the interface between the dust bin and motor housing.

Inventive Principle:
Principle #1Segmentation

2Loss of time

If the compression part is added to compress dust, then dust bin emptying frequency is reduced, but device complexity increases

Engineering Contradiction:
Improveemptying frequencyVSAvoidstructure complexity
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The compression part incorporates a movable compression plate that can be dynamically positioned to compress dust in the dust bin. This dynamic mechanism allows the system to adapt to varying dust volumes and provides effective compression without requiring a completely new dust bin design, thereby reducing emptying frequency while controlling overall device complexity.

Inventive Principle:
Principle #15Dynamics

3Reliability

If the interval between dust bin and cyclone is increased, then foreign substance entrapment is prevented, but device volume increases

Engineering Contradiction:
Improvepreventing entrapmentVSAvoiddevice volume
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The design increases the interval between the dust bin and cyclone by utilizing vertical spacing rather than horizontal expansion. This dimensional approach prevents foreign substance entrapment while minimizing the overall device volume by efficiently arranging components in the vertical direction.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

4Ease of operation

If the manipulation part is positioned outside motor housing, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
ImproveaccessibilityVSAvoidtransmission structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

A transmission part serves as an intermediary mechanism that connects the manipulation part positioned outside the motor housing to the compression part inside the dust bin. This intermediary transmission structure allows users to easily operate the compression function from an accessible external position while maintaining a relatively simple overall device architecture through efficient mechanical coupling.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 design facilitates efficient dust compaction, easy maintenance, and improved airflow while preventing contamination, enhancing user convenience and reducing the frequency of emptying the dust bin.

Implementation Method 1

a cyclone part positioned in the dust bin and configured to separate the dust sucked through the suction part

Methodology Applied
Scientific EffectCyclone separation: Cyclone Separation

Implementation Method 2

The separation device includes a centrifugal separator having one or more cyclones

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 3

a compression part configured to compress the dust in the dust bin

Methodology Applied
Scientific EffectMechanical compression: Compression

Data Source

PatentEP4154781B1Vacuum cleaner
Publication Date: 2025.09.17 LG ELECTRONICS INC
  • EP4154781B1 patent drawingFigure 1
  • EP4154781B1 patent drawingFigure 2
  • EP4154781B1 patent drawingFigure 3

AI summary

One aspect of the present disclosure provides a cleaner including: a dust bin configured to store dust sucked through a suction part; a motor housing disposed above the dust bin and coupled to the dust bin; a handle part coupled to the motor housing; a motor positioned in the motor housing; a cyclone part positioned in the dust bin and configured to separate the dust sucked through the suction part; a filter part positioned in the dust bin and configured to filter air during a process in which air from which the dust is separated in the cyclone part passes through the filter part; and a compression part configured to compress the dust in the dust bin, in which the compression part includes: an operating part disposed in the motor housing and configured to move in an upward/downward direction in a space between an outer portion of the filter part and an inner circumferential surface of the dust bin in the dust bin; a manipulation part disposed outside the motor housing and configured to be manipulated to move the operating part in the upward/downward direction; and a transmission part disposed in the motor housing and configured to connect the operating part and the manipulation part.