Dual-Module Air Cleaner Layout to Prevent Airflow Recirculation

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Solution Overview

Problem

Conventional air cleaners have limited capacity and reliability, with reduced suction capacity due to structural resistance and limited air flow direction, leading to incomplete air purification in indoor spaces, and increased noise when trying to improve fan performance.

Innovation Solution

The air cleaner design includes dual blowing devices with cylindrical cases and 360-degree suction ports, a dividing plate to direct airflow outward, and a centrifugal fan with an air guide to enhance airflow directionality and prevent re-introduction of discharged air, increasing suction and blowing capacity while reducing noise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If fan blowing amount is increased to improve air purification performance, then air purification capacity is improved, but noise increases and reliability decreases

Engineering Contradiction:
Improveair purification capacityVSAvoidproduct reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent employs a cylindrical case shape instead of a rectangular parallelepiped, which eliminates corner resistance and enables 360-degree air suction ports around the entire circumference. This curved geometry optimizes airflow patterns, allowing effective air purification with reduced fan power requirements, thus maintaining reliability while improving productivity.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The invention introduces multi-directional air discharge (upward, lateral, and forward directions) instead of single upward discharge. This three-dimensional airflow distribution expands the purification coverage throughout the indoor space without requiring increased fan blowing amount, resolving the contradiction between purification capacity and noise/reliability.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If single direction air discharge is used to simplify device structure, then device complexity is reduced, but air purification coverage is limited

Engineering Contradiction:
Improveair purification coverageVSAvoidairflow control structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The air discharge function is segmented into multiple independent discharge ports positioned at different locations and orientations (upper discharge port for upward flow, lateral discharge ports for horizontal flow, and forward discharge ports). This segmentation enables comprehensive spatial coverage without requiring complex movable or adjustable mechanisms, maintaining structural simplicity while expanding purification coverage.

Inventive Principle:
Principle #1Segmentation

3Productivity

If rectangular parallelepiped case shape is used for ease of manufacture, then manufacturing simplicity is improved, but suction capacity is reduced due to structural resistance

Engineering Contradiction:
Improveair suction capacityVSAvoidcase manufacturing
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The patent adopts a cylindrical case configuration that eliminates the corner resistance inherent in rectangular designs. The curved surface allows uniform 360-degree air suction ports around the entire circumference, maximizing suction capacity. While cylindrical manufacturing may be slightly more complex than rectangular, the design simplifies internal airflow paths and eliminates the need for corner flow management.

Inventive Principle:
Principle #14Spheroidality (Curvature)

4Productivity

If limited direction air suction ports are used to simplify structure, then device complexity is reduced, but suction capacity is limited

Engineering Contradiction:
Improveair suction capacityVSAvoidsuction port configuration
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The cylindrical case structure serves multiple functions simultaneously: it provides the structural housing, enables 360-degree air intake through circumferential suction ports, and optimizes airflow patterns. This universal design achieves maximum suction capacity without adding separate complex suction port mechanisms, maintaining structural simplicity while maximizing productivity.

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 design improves air purification efficiency by increasing suction capacity, directing airflow in multiple directions, and preventing air re-introduction, resulting in effective air cleaning across larger indoor spaces with reduced noise and improved user convenience.

Implementation Method 1

a centrifugal fan with an air guide to enhance airflow directionality

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

a filter capable of filtering dust and bacteria

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS10639576B2Air cleaner
Publication Date: 2020.05.05 LG ELECTRONICS INC
  • US10639576B2 patent drawing
  • US10639576B2 patent drawing
  • US10639576B2 patent drawing

AI summary

An air cleaner is provided that may include a first air cleaning module including a first fan that generates air flow toward a first discharge outlet from a first suction inlet; a second air cleaning module including a second fan that generates air flow toward a second discharge outlet from a second suction inlet; and a divider provided between the first air cleaning module and the second air cleaning module, the divider being configured to block air discharged through the first discharge outlet from being suctioned into the second suction inlet.