Vacuum cleaner

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Solution Overview

Problem

Vacuum cleaners often face inefficiencies in filtration, particularly due to uneven debris distribution across pre-motor filters, leading to reduced performance over time and user inconvenience in maintaining filters.

Innovation Solution

A vacuum cleaner design featuring a pre-motor filter and a post-motor filter, both removably coupled to the main body, with the pre-motor filter capable of rotation to ensure consistent filtration efficiency and easy maintenance, and a cyclonic separator with a screen and dirt cup for debris separation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a pre-motor filter is used in vacuum cleaners, then filtration is provided, but uneven debris distribution causes reduced performance over time and maintenance inconvenience

Engineering Contradiction:

Improvefiltration performanceVSAvoidmaintenance convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The pre-motor filter is made rotatable about the motor axis, transforming it from a static to a dynamic component. This allows the filter to be rotated into different positions for easy access and cleaning without disassembling the vacuum cleaner, directly addressing the maintenance inconvenience caused by uneven debris distribution

Inventive Principle:

Principle #15Dynamics

2Reliability

If filters are placed inside the main body, then filtration is achieved, but filter accessibility for maintenance is reduced

Engineering Contradiction:

Improvefiltration efficiencyVSAvoidfilter accessibility

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

By making the pre-motor filter rotatable rather than fixed, the design allows users to rotate the filter into an accessible position for maintenance while keeping it installed within the main body during operation, thus maintaining both filtration efficiency and ease of repair

Inventive Principle:

Principle #15Dynamics

3Productivity

If a cyclonic separator is used, then debris separation is improved, but debris distribution across the filter becomes uneven

Engineering Contradiction:

Improvedebris separation efficiencyVSAvoidfiltration performance consistency

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The rotatable pre-motor filter allows users to rotate it to different positions to access areas with accumulated debris that results from uneven distribution by the cyclonic separator, maintaining consistent filtration performance over time

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The design enables users to easily rotate and clean the filter themselves without requiring disassembly or special tools, allowing them to maintain optimal filtration performance by regularly redistributing debris during routine maintenance

Inventive Principle:

Principle #25Self-service

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

Enhances filtration efficiency by allowing for easy filter rotation and maintenance, maintaining performance over time and improving user convenience by keeping filters accessible during dirt separator removal.

Implementation Method 1

The dirt separator can include a cyclonic separator

Methodology Applied

Scientific EffectCyclonic separation: Cyclone Separation

Implementation Method 2

a cyclonic separator with a screen and dirt cup for debris separation

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 3

a pre-motor filter in contacting engagement with the main body in a vertically orientated plane, and a post-motor filter in contacting engagement with the main body along the vertically orientated plane

Methodology Applied

Scientific EffectPhysical filtration: Filter (physical)

Data Source

PatentUS10278557B2Vacuum cleaner

Publication Date: 2019.05.07 TECHTRONIC IND CO LTD

AI summary

A vacuum cleaner that includes a suction source, a main body, a dirt separator removably coupled to the main body, a pre-motor filter in contacting engagement with the main body in a vertically orientated plane, and a post-motor filter in contacting engagement with the main body along the vertically orientated plane.