Air cleaner

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Solution Overview

Problem

Existing air cleaners face challenges in efficiently directing clean air to highly polluted local areas within indoor spaces due to difficulties in connecting and controlling air quality detection devices with wind direction controllers, while interference from jamming factors reduces accuracy and air cleaning efficiency.

Innovation Solution

An air cleaner system with a controller that receives air quality information from sensors and uses Ultra Wide Band (UWB) communication to control the wind direction of air discharge through a rotatable discharge guider and tiltable circulator, optimizing the controller's position to minimize interference and enhance air cleaning efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the air cleaner controls wind direction while detecting air quality simultaneously, then air cleaning efficiency is improved, but the difficulty in connecting and controlling air quality detection devices with wind direction controllers increases

Engineering Contradiction:
Improveair cleaning efficiencyVSAvoidcontrol system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent combines the air quality detection device and wind direction controller into a single integrated controller unit. The controller receives air quality information from sensors and directly controls the wind direction control unit, eliminating the need for separate control systems and reducing connection complexity while maintaining simultaneous detection and control capabilities

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The controller is designed to perform multiple functions: detecting air quality through integrated sensors, processing air quality information, and controlling wind direction through the wind direction control unit. This multi-functional design simplifies the overall system architecture by consolidating control operations into a single universal controller

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

2Measurement precision

If sensors are placed to detect air quality in indoor spaces, then air quality detection capability is improved, but jamming factors reduce measurement accuracy

Engineering Contradiction:
Improveair quality detection accuracyVSAvoidsensor jamming interference
Core Design Contradiction:
Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a positioning module as an intermediary that provides spatial information about the air cleaner's location. This positioning information is used to calculate the direction of polluted areas and determine optimal sensor placement and wind direction control strategies, enabling the system to compensate for jamming factors through spatial awareness and directional control

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system uses positioning information to identify specific polluted local areas within the indoor space and directs clean air selectively to those areas. By focusing air quality detection and control on specific local regions rather than treating the entire space uniformly, the system improves measurement relevance and reduces the impact of general environmental jamming factors

Inventive Principle:
Principle #3Local quality

3Measurement precision

If the controller is positioned to minimize interference, then air quality signal reception is improved, but the device occupies more internal space

Engineering Contradiction:
Improvesignal reception qualityVSAvoidcontroller space occupation
Core Design Contradiction:
Measurement precisionVSVolume of moving object

Solution Approach 1:

The controller is nested within the blower unit housing, utilizing the existing internal space of the air cleaner. The positioning module and sensors are integrated into the controller assembly, which is then installed within the blower unit's housing structure. This nested arrangement minimizes additional space occupation while providing the controller with an optimal position for signal reception away from jamming factors

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP3945257A1Air cleaner
Publication Date: 2022.02.02 LG ELECTRONICS INC
  • EP3945257A1 patent drawingFigure 1
  • EP3945257A1 patent drawingFigure 2
  • EP3945257A1 patent drawingFigure 3

AI summary

The present disclosure relates to an air cleaner. The air cleaner according to the present disclosure includes: blower units having blower unit fans disposed therein, and air inlets formed therein; filters serving to filter out foreign substances contained in air suctioned through the air inlets into the blower units; a wind direction control unit configured to control a flow direction of air discharged outside of the blower units by the blower unit fans; and a controller configured to control the wind direction control unit so that the flow direction of the air discharged outside through the wind direction control unit is controlled by the wind direction control unit after receiving information on air quality outside of the blower unit. Accordingly, by controlling the wind direction of air, discharged from the circulator or the discharge guider, based on indoor air quality signals, clean air may be supplied intensively to a highly polluted area, thereby improving air cleaning efficiency.