Air cleaner

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Solution Overview

Problem

Conventional air cleaners face challenges in dust collection efficiency due to low flying body speed and movement, large dust collector size affecting propulsion, and difficulty in controlling the flying body, especially when the dust collector is attached in a way that influences airflow.

Innovation Solution

The air cleaner uses a propeller to float the flying body, with a dust collector that electrostatically attracts dust from a wider range, featuring cylindrical attraction units that increase the contact area and function as a ducted fan to improve propulsion and dust collection efficiency, even at low speeds, and can be downsized without increasing size when set to high-voltage specifications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the dust collector is made large to collect dust effectively, then the dust collection efficiency is improved, but the propulsion of the flying body is significantly influenced and control becomes difficult

Engineering Contradiction:

Improvedust collection efficiencyVSAvoidcontrol of flying body

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The propeller is positioned inside the dust collector, with the dust collector serving as a housing or cover for the propeller. This nested arrangement allows the dust collector to function as both a dust collection device and a structural component of the propulsion system, eliminating the need for separate large structures and improving control stability.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The dust collector is designed to serve multiple functions: it acts as a dust collection chamber, a cover for the propeller, and potentially a ducted fan structure. This multi-functionality reduces the overall size requirements and improves the integration between dust collection and propulsion systems.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Use of energy by moving object

If the flying body moves slowly or does not move around well, then energy consumption is reduced, but the dust collection rate decreases

Engineering Contradiction:

Improveenergy consumptionVSAvoiddust collection rate

Core Design Contradiction:

Use of energy by moving objectVSProductivity

Solution Approach 1:

The dust collector is designed to function as a ducted fan, using the propeller to create controlled air flow through the dust collector. This pneumatic system actively draws dust-laden air into the collection chamber and maintains internal circulation, enabling effective dust collection even when the flying body remains stationary or moves slowly.

Inventive Principle:

Principle #29Pneumatics and hydraulics

Solution Approach 2:

The ducted fan design creates continuous air flow through the dust collector, ensuring that dust collection operates continuously and efficiently regardless of the flying body's movement. The internal air circulation maintains constant dust attraction and collection processes.

Inventive Principle:

Principle #20Continuity of useful action

3Reliability

If the intake opening and exhaust opening are spaced far apart for high voltage insulation, then the dust collector can be electrically charged effectively, but the dust collector becomes large in size

Engineering Contradiction:

Improveelectrical charging effectivenessVSAvoiddust collector size

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The dust collector employs high voltage electrical charging to create strong electrostatic fields for dust attraction. By adjusting electrical parameters (voltage, charge distribution) rather than relying solely on physical dimensions, the system achieves effective dust collection with a more compact structure.

Inventive Principle:

Principle #35Parameter changes

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

This design enhances dust collection rate, prevents dust dropout, and provides sterilization and allergen deactivation effects, improving dust collection efficiency and propulsion while maintaining a compact dust collector size.

Implementation Method 1

a flying body 2 to be propelled by a propeller 21

Methodology Applied

Scientific EffectPropulsion:

Implementation Method 2

dust in the air is suctioned into a dust collector 4-1 from an intake opening 4A and electrostatically attracted by the dust collector

Methodology Applied

Scientific EffectElectrostatic attraction: Electrostatics

Implementation Method 3

air in a wider surrounding range is forcibly suctioned into the dust collector by an intake force and an exhaust force of the propeller

Methodology Applied

Scientific EffectAir flow:

Data Source

PatentEP3348327B1Air cleaner

Publication Date: 2020.09.02 CREATIVE TECHNOLOGY CORP

Figure 1~2
Figure 3~4
Figure 5

AI summary

Provided is an air cleaner that can take air in a wider range into a dust collector and can have attached a small dust collector without dropout of dust from the dust collector. An air cleaner 1-1 is provided with a flying body 2 and dust collectors 4-1 - 4-4. The flying body 2 is a drone and has a main body unit 20 and propellers 21 - 24 attached to the tips of frames 25 - 28. Each of the dust collectors 4-1 (4-2 - 4-4) is constituted of a cylindrical adsorption unit 40A - 40C assembled to the propeller 21 (22 - 24), and a power supply unit 31 and a booster unit 33 within the main body unit 20. Each adsorption unit 40A (40B, 40C) is formed from a dielectric 41 and an electrode 42 within the dielectric 41. The electrodes 42, 42, 42 of the adsorption units 40A, 40B, 40C are connected to the booster unit 33 via respective wiring 33a, 33b, 33c, and the power supply unit 31 is connected to the booster unit 33.