Inclined Air Cleaner Outlet Grille for Longer Discharge Reach

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Solution Overview

Problem

Conventional air cleaners with outlets at the top face challenges in space utilization and performance due to the upward discharge of filtered air, which often results in reduced distance coverage and increased interference, leading to decreased efficiency and convenience.

Innovation Solution

The air cleaner design incorporates an inclined outlet grille and a guide wall to direct discharged air away from the inlet, utilizing a second body with a flat surface to enhance space utilization and prevent air reintroduction, while the blower fan and motor ensure efficient air flow management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the outlet is provided at the top of the air cleaner, then filtered air can be discharged upward to improve indoor air quality, but the discharged air collides with objects on the top surface and cannot reach a long distance, reducing air cleaner performance

Engineering Contradiction:
Improveair cleaning performanceVSAvoiddischarged air coverage distance
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The outlet grille is inverted from a horizontal top surface to an inclined surface extending downward from the top. This inversion allows discharged air to flow along the inclined surface in a downward and outward direction, avoiding collision with objects on the top surface and extending the coverage distance of discharged air while maintaining air cleaning performance

Inventive Principle:
Principle #13The other way round (Inversion)

2Volume of stationary object

If a member having a storage space is provided at the air cleaner to increase space utilization, then the top space can be utilized, but the discharged air collides with the member and cannot reach a long distance, decreasing air cleaner performance

Engineering Contradiction:
Improvespace utilizationVSAvoidair cleaner performance
Core Design Contradiction:
Volume of stationary objectVSProductivity

Solution Approach 1:

The inclined outlet grille serves multiple functions: it acts as the air discharge outlet and simultaneously creates a downward airflow path that prevents collision with storage members. The guide wall further guides air flow to ensure both space utilization and maintained air discharge performance are achieved

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

3Productivity

If the outlet is provided on the top surface of the body, then air can be discharged upward, but the top surface cannot be utilized and the narrow flat surface makes it difficult to place items

Engineering Contradiction:
Improveair discharge capabilityVSAvoidtop surface utilization
Core Design Contradiction:
ProductivityVSVolume of stationary object

Solution Approach 1:

The outlet grille is inverted from a horizontal top surface configuration to an inclined surface extending downward. This allows the top surface area to be expanded for placing items while the inclined surface provides the air discharge path, simultaneously improving both top surface utilization and air discharge capability

Inventive Principle:
Principle #13The other way round (Inversion)

4Volume of stationary object

If the body has a high height to provide a top surface, then space utilization can be improved, but the top surface area remains narrow and the outlet is covered, reducing air cleaner performance

Engineering Contradiction:
Improvespace utilizationVSAvoidair cleaner performance
Core Design Contradiction:
Volume of stationary objectVSProductivity

Solution Approach 1:

Instead of increasing height to create top surface area, the outlet grille is designed to extend in a downward and outward direction along an inclined surface. This dimensional change allows the top surface area to be expanded without increasing height, while the inclined surface configuration prevents outlet coverage and maintains air discharge performance

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

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 cleaner efficiency by preventing air loss, enhancing discharged air control, and increasing space utilization, allowing for better air distribution and user convenience.

Implementation Method 1

a blower fan disposed inside the first body

Methodology Applied
Scientific EffectFluid flow:

Implementation Method 2

the first body may include an outlet grille that is disposed on the outlet and has a plurality of vanes extending from an upper end of a circumferential wall of the first body toward a central portion of the first body

Methodology Applied
Scientific EffectFlow direction control:

Implementation Method 3

the second body may include a guide wall that is spaced upward from the outlet grille and extends laterally to face downward

Methodology Applied
Scientific EffectFlow guidance:

Data Source

PatentEP4306859A1Air cleaner
Publication Date: 2024.01.17 LG ELECTRONICS INC
  • EP4306859A1 patent drawingFigure 1
  • EP4306859A1 patent drawingFigure 2
  • EP4306859A1 patent drawingFigure 3

AI summary

An air cleaner includes: a first body having an inlet and an outlet that is open at top; a filter disposed inside the first body and facing the inlet; a blower fan disposed between the inlet and the outlet, inside the first body, to generate an air flow from the inlet to the outlet; a blower motor disposed inside the first body and configured to rotate the blower fan; and a second body spaced upward from the outlet and disposed over the first body, wherein the first body includes an outlet grille that is disposed on the outlet and has a plurality of vanes extending from an upper end of a circumferential wall of the first body toward a central portion of the first body, and the outlet grille is inclined upward toward the central portion of the first body from the circumferential wall of the first body.