Air Cleaner Flow Switching With Wireless Power Rotation

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Solution Overview

Problem

Conventional air cleaners have limited capacity and difficulty in purifying air across entire indoor spaces due to restricted rotation of flow switching devices caused by power connections, leading to inefficient air distribution.

Innovation Solution

The implementation of a wireless power transmission system between the air blowing device and the flow switching device allows for 360-degree rotation without twisting cables, simplifying the power connection process and ensuring stable power supply to the flow switching device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a wired power connection is used between the air blowing device and the flow switching device, then power can be supplied reliably, but the rotation of the flow switching device is limited due to cable twisting

Engineering Contradiction:
Improvepower supply reliabilityVSAvoidrotation range of flow switching device
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent replaces the mechanical wired power connection system with a wireless power transmission system. The wireless power transmitter is disposed in the air blowing device and wirelessly transmits power to the wireless power receiver in the flow switching device, eliminating the mechanical constraints of cables and enabling 360-degree rotation without twisting limitations.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If the flow switching device is restricted in rotation to prevent cable damage, then cable reliability is maintained, but purified air cannot be smoothly provided to all spaces

Engineering Contradiction:
Improvecable reliabilityVSAvoidair distribution coverage
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent eliminates the mechanical cable connection by implementing wireless power transmission. This allows the flow switching device to rotate freely 360 degrees to distribute purified air to various spaces, while the wireless power system maintains reliable power supply without the physical constraints of cables.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If wireless power transmission is implemented to enable 360-degree rotation, then air distribution coverage is improved, but power connection complexity increases

Engineering Contradiction:
Improverotation freedom of flow switching deviceVSAvoidpower transmission system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent integrates wireless power transmission functionality into the existing air blowing device and flow switching device. The wireless power transmitter utilizes the existing power supply and transmitting coil structure, while the flow switching device incorporates a wireless power receiver that works with its existing motor and flow control mechanisms, achieving multi-functionality without excessive complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 solution enables effective air distribution across larger areas by allowing the flow switching device to rotate freely, improving the air cleaner's ability to purify and discharge air to various spaces without the limitations of traditional wired connections.

Implementation Method 1

a main body including a power supply and a wireless power transmitter connected to the power supply, and a flow switching device movably provided on one side of the main body, wherein the flow switching device includes a wireless power receiver configured to receive power wirelessly from the wireless power transmitter

Methodology Applied
Scientific EffectWireless power transmission: Electromagnetic Induction

Data Source

PatentEP3943177B1Air cleaner
Publication Date: 2024.01.10 LG ELECTRONICS INC
  • EP3943177B1 patent drawingFigure 1
  • EP3943177B1 patent drawingFigure 2
  • EP3943177B1 patent drawingFigure 3

AI summary

An air cleaner according to an embodiment of the present disclosure includes: a main body including a main fan configured to generate air flow, a discharge part through which air passing through the main fan is discharged, a wireless power transmitter disposed on one side, and a power supply connected to the wireless power transmitter; and a flow switching device movably provided on the one side of the main body, wherein the flow switching device includes: a first guide tool configured to guide a first direction rotation of the flow switching device; a second guide tool configured to guide a second direction rotation of the flow switching device; and a wireless power receiver configured to supply power to the first guide tool and the second guide tool.