Air Purifier Filter Access Layout for Booster-Oriented Installation

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Solution Overview

Problem

Existing air purifiers require users to change filters by altering the overall layout, making it inconvenient, and have exposed electrical wires that are not easily accessible for replacement or maintenance.

Innovation Solution

The air purifier design includes a booster that can be oriented to face the user's direction, allowing filter access without rearranging the device, and an electrical wire hole positioned opposite the booster outlet for easy access, along with separate inlet covers for easy filter replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the booster is disposed to face a wall surface or corner, then the air purifier can be installed in tight spaces, but the filter replacement becomes inconvenient requiring layout changes

Engineering Contradiction:
Improveinstallation spaceVSAvoidfilter replacement convenience
Core Design Contradiction:
Area of stationary objectVSEase of operation

Solution Approach 1:

The air purifier is divided into separable modules: the booster can be detached from the main body, and the filter assembly is separated into an independent removable unit. This segmentation allows the filter to be accessed and replaced without moving the entire device or changing the layout, resolving the contradiction between compact installation and easy maintenance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The booster is designed with rotatable and detachable features, allowing it to be dynamically reconfigured. The filter assembly can be independently removed and reinserted without affecting the booster's position, enabling easy filter replacement while maintaining the device's compact installation orientation.

Inventive Principle:
Principle #15Dynamics

2Ease of repair

If the electrical wire hole is positioned for easy access, then wire maintenance is convenient, but the wire may be exposed away from the wall outlet

Engineering Contradiction:
Improvewire maintenance accessibilityVSAvoidwire routing convenience
Core Design Contradiction:
Ease of repairVSEase of operation

Solution Approach 1:

The electrical wire hole is positioned in the base of the air purifier, utilizing the vertical dimension and rear positioning to route wires from the wall outlet directly into the device. This rear-base positioning allows the wire to be easily accessible for maintenance while simultaneously enabling convenient routing to wall outlets, resolving the contradiction between maintenance accessibility and installation convenience.

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

3Device complexity

If the inlet cover is integrated with the main body, then the structure is simpler, but the filter cannot be easily accessed for replacement

Engineering Contradiction:
Improvestructure simplicityVSAvoidfilter access convenience
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The inlet cover is designed as a separate removable component that can be detached from the main body to access the filter. This segmentation maintains relative structural simplicity while enabling easy filter access, resolving the contradiction between structure simplicity and maintenance convenience.

Inventive Principle:
Principle #1Segmentation

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

Facilitates convenient filter replacement and allows for the electrical wire to be positioned near the wall, enhancing user convenience and accessibility during maintenance.

Implementation Method 1

a fan disposed in the body and making the air flow from the inlet to the outlet

Methodology Applied
Scientific EffectAir flow:

Implementation Method 2

a booster disposed on the body and configured to discharge air toward one side in a circumferential direction through a booster outlet

Methodology Applied
Scientific EffectAir flow direction switching:

Data Source

PatentEP4664027A1Air purifier
Publication Date: 2025.12.17 LG ELECTRONICS INC
  • EP4664027A1 patent drawingFigure 1
  • EP4664027A1 patent drawingFigure 2
  • EP4664027A1 patent drawingFigure 3

AI summary

The present disclosure relates to an air purifier. The air purifier of the present disclosure includes: a body having an inlet formed on an circumference surface thereof and an outlet formed on an upper surface thereof, and a booster disposed at an upper side of the body, and discharging air in one direction on the circumference surface through a booster outlet. The body includes a fan disposed inside the body and making air flow from the inlet to the outlet, a fan housing having a space in which the fan is disposed, a filter disposed at a lower side of the fan housing, and filtering air introduced through the inlet, and a filter frame extended to a lower side from the fan housing, and supporting a space in which the filter is disposed. The filter frame is disposed to withdraw the filter in a direction faced by the booster outlet.