Drum Blade Airflow Holes for Low-Noise Anti-Tangle Cleaners

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Solution Overview

Problem

Conventional cleaners with drum blades face issues such as fibrous dust tangling, reduced cleaning efficiency, noise due to contact with the floor, and increased power consumption, as the air current generated by the suction blower opposes the drum blade rotation and increases friction.

Innovation Solution

A cleaner design featuring a drum blade with blade air current holes and a viscoelastic material, extending outward from the drum body, which reduces contact area and includes a connecting member for rotation, allowing efficient rubbish and air suction while minimizing noise and power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a drum brush is provided at the inlet to scatter rubbish, then cleaning efficiency is improved, but fibrous dust gets tangled on the drum brush surface causing inconvenience and reduced cleaning efficiency

Engineering Contradiction:

Improvecleaning efficiencyVSAvoidfibrous dust tangling

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent extracts the problematic drum brush component and replaces it with a drum blade structure. The drum blade maintains the scattering function while eliminating the tangling issue by using a smooth blade surface instead of bristles, thus removing the harmful effect of fibrous dust accumulation.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the physical parameter of the drum surface from bristled (drum brush) to smooth (drum blade). This parameter change transforms the surface properties to prevent fibrous dust adhesion while maintaining the mechanical scattering action needed for cleaning efficiency.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the drum blade contact area with the floor surface is increased to improve scattering, then rubbish scattering is enhanced, but noise increases and power consumption increases due to increased friction

Engineering Contradiction:

Improverubbish scattering efficiencyVSAvoidnoise and power consumption

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by making the drum blade contact area selectively engaged with the floor surface. The blade is designed to contact the surface only at specific locations and angles necessary for effective scattering, rather than maintaining continuous broad contact, thus reducing overall friction and associated noise and power consumption.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The drum blade is designed to dynamically adjust its contact characteristics with the floor surface during rotation. The blade angle and contact point vary during the rotational cycle, allowing effective scattering during contact phases while minimizing friction during non-contact phases, thereby reducing noise and power consumption.

Inventive Principle:

Principle #15Dynamics

3Productivity

If air current holes are added to the drum blade to improve air and rubbish flow, then cleaning performance is improved, but device complexity increases

Engineering Contradiction:

Improvecleaning performanceVSAvoiddrum blade structure complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The drum blade is designed to perform multiple functions simultaneously: it acts as both a mechanical scattering element and an air guiding structure. The air current holes integrated into the blade serve dual purposes of managing air flow and maintaining structural integrity, thereby improving cleaning performance without proportionally increasing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the air flow management function directly into the drum blade structure by incorporating air current holes within the blade itself. This integration combines the scattering function and air guidance function into a single component, avoiding the need for separate air management mechanisms and thus limiting the increase in device complexity.

Inventive Principle:

Principle #5Merging (Combining)

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 enhances cleaning efficiency by facilitating the movement of rubbish and air through the cleaner, reduces noise by minimizing contact area between the drum blade and the floor, and decreases power consumption by reducing friction and contact resistance.

Implementation Method 1

a drum blade arranged in an outer circumferential direction of the drum body and formed with a blade air current hole through which air suctioned in through the inlet passes

Methodology Applied

Scientific EffectAir current flow through holes:

Implementation Method 2

The drum blade may include a viscoelastic material

Methodology Applied

Scientific EffectViscoelasticity: Viscoelasticity

Data Source

PatentUS11185206B2Drum for cleaner and cleaner having the same

Publication Date: 2021.11.30 SAMSUNG ELECTRONICS CO LTD

AI summary

A cleaner includes a case which includes an inlet for suctioning in rubbish on a surface to be cleaned, a driver which is provided inside the case and includes a motor which generates power, a drum body which is provided in the inlet and configured to receive the power from the driver and rotate, and a drum blade arranged in an outer circumferential direction of the drum body and formed with a blade air current hole through which air suctioned in through the inlet passes.