Cyclone Dust Collector with Straight-Path Flow to Reduce Pressure Loss

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Solution Overview

Problem

Cyclone dust collecting apparatuses in hand-held vacuum cleaners suffer from pressure loss and reduced dust separating efficiency due to changes in air flow direction and the use of separate duct members, which limits the effectiveness of dust collection and prevents the use of high-power suction motors.

Innovation Solution

A cyclone dust collecting apparatus with a pre-motor filter unit and a dust collecting bin featuring a spiral flow path-guide member and an anti-back flow rib, where the air flow path remains consistent, and the cyclone inlet is directly connected to the cleaner inlet port without a separate duct, reducing pressure loss and improving dust collection efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the air flow direction is reversed or sharply curved in the cyclone dust collecting apparatus, then the dust separation function is achieved, but pressure loss increases and dust separating efficiency deteriorates

Engineering Contradiction:

Improvedust separating efficiencyVSAvoidpressure loss

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The cyclone dust collecting apparatus is divided into distinct functional sections: a dust collecting bin for separation, a handle section for user operation, and a base section for motor housing. This segmentation allows each section to be optimized independently, with the dust collecting bin designed to minimize flow path changes while maintaining separation efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent inverts the conventional design by placing the cyclone inlet at the lower end of the dust collecting bin and the air outlet at the upper end, creating a downward-to-upward flow path. This inversion eliminates the need for sharp direction changes and 180-degree reversals, reducing pressure loss while maintaining effective dust separation through centrifugal force.

Inventive Principle:

Principle #13The other way round (Inversion)

2Ease of operation

If a separate duct member is used to connect the inlet port and cyclone inlet, then the hand-held cleaner structure is complete, but the flow path becomes long and air flow loss increases

Engineering Contradiction:

Improvehand-held cleaner structureVSAvoidair flow loss

Core Design Contradiction:

Ease of operationVSLoss of energy

Solution Approach 1:

The patent merges the dust collecting bin directly with the handle section, eliminating the need for separate duct members to connect the inlet port and cyclone inlet. The air inlet port is integrated into the handle section, and the cyclone inlet is positioned at the lower end of the dust collecting bin, creating a short and direct flow path that reduces air flow loss while maintaining structural completeness.

Inventive Principle:

Principle #5Merging (Combining)

3Power

If a high power suction motor is used in the hand-held cleaner, then suction performance is improved, but the device becomes too heavy and cannot be used as hand-held

Engineering Contradiction:

Improvesuction motor powerVSAvoidcleaner weight

Core Design Contradiction:

PowerVSWeight of moving object

Solution Approach 1:

The patent applies local quality by concentrating the high-power suction motor in the base section rather than distributing weight throughout the hand-held portion. The motor is housed in the stationary base, allowing it to provide high suction power without adding to the weight of the movable hand-held cleaner. The dust collecting bin is designed to minimize air flow resistance, maximizing the efficiency of the motor's power output.

Inventive Principle:

Principle #3Local quality

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 solution reduces pressure loss and enhances dust collecting efficiency by maintaining a consistent air flow path and eliminating the need for separate ducts, allowing for improved suction performance and effective dust separation in hand-held vacuum cleaners.

Implementation Method 1

a cyclone dust collecting apparatus, which collects a dirt or dust from an air, and separates the dust or dirt therefrom by using a centrifugal force generated by the whirling of air

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

a pre-motor filter unit having a filter grill and a filter member

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS11484164B2Cyclone dust collecting apparatus and handheld cleaner having the same

Publication Date: 2022.11.01 SAMSUNG ELECTRONICS CO LTD

AI summary

The hand-held cleaner includes a body, and a cyclone dust collecting apparatus detachably mounted in the body. The cyclone dust collecting apparatus includes a pre-motor filter unit having a filter grill and a filter member, a dust collecting bin having one end to which the pre-motor filter unit is coupled and the other end opposite to the one end in which an cyclone inlet is formed, and a cyclone bin disposed in the dust collecting bin and having a spiral flow path-guide member integrally formed therein. A moving path of air drawn into the cyclone inlet is maintained in the same direction until the air is discharged through the pre-motor filter unit via the cyclone bin.