Clothes Dryer Filter Assembly With Auto Lint Removal

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Solution Overview

Problem

Conventional clothes treatment apparatuses face inefficiencies in drying due to accumulation of foreign substances like lint in heat exchangers and indoor air quality issues from unfiltered discharged air, necessitating effective filtration and substance removal systems.

Innovation Solution

A clothes treating apparatus incorporating a filter assembly and foreign substance compression unit that filters and compresses air-borne foreign substances, featuring a rotating brush for substance removal and a compression unit with a reciprocating plate for efficient compression and collection, along with a sensing mechanism for monitoring and automatic cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If air is discharged from the clothes treating apparatus without filtration, then the drying process is simple and quick, but foreign substances accumulate in heat exchangers and indoor air quality deteriorates

Engineering Contradiction:
Improvedrying efficiencyVSAvoidindoor air quality
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the filtration function from the discharge air stream by introducing a dedicated filter assembly that captures foreign substances before they are released into the environment. This separation allows the drying process to maintain efficiency while eliminating harmful emissions.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The filter assembly acts as an intermediary component between the discharge air and the external environment. It mediates by capturing lint and foreign substances through filtration media, allowing clean air to pass through while trapping harmful particles.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a filter assembly is added to remove foreign substances from discharged air, then indoor air quality is improved, but the device complexity increases

Engineering Contradiction:
Improveforeign substance dischargeVSAvoidapparatus structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges the filtration function with the existing discharge air pathway by integrating the filter assembly into the current apparatus structure. This combination approach adds filtration capability without requiring completely separate systems, thereby limiting the increase in overall device complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The filter assembly is designed to serve multiple functions: filtering foreign substances from discharge air, preventing lint accumulation in heat exchangers, and improving indoor air quality. This multi-functionality justifies the added component by providing multiple benefits from a single addition.

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

3Ease of manufacture

If the filter assembly is cleaned manually, then the manufacturing cost is low, but the loss of time and user convenience deteriorates

Engineering Contradiction:
Improveapparatus costVSAvoidcleaning time
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The patent implements a self-service cleaning mechanism where the apparatus automatically cleans its own filter assembly. A brush or cleaning element is integrated into the system to periodically remove accumulated lint from the filter media, eliminating the need for manual intervention and reducing user time investment.

Inventive Principle:
Principle #25Self-service

4Device complexity

If foreign substances are not removed from the discharge air, then the device complexity remains low, but the reliability of the heat exchanger deteriorates due to lint accumulation

Engineering Contradiction:
Improvefiltration systemVSAvoidheat exchanger performance
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent applies preliminary action by filtering foreign substances from the discharge air before they can accumulate in the heat exchanger. The filter assembly is positioned upstream in the air flow path, preventing lint and foreign particles from reaching and compromising the heat exchanger components.

Inventive Principle:
Principle #10Preliminary action

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

Enhances drying efficiency by preventing foreign substance accumulation in heat exchangers and improves indoor air quality by ensuring filtered air discharge, with automatic filter cleaning reducing user intervention and maintaining apparatus performance.

Implementation Method 1

The filter unit is positioned to filter substances from air discharged from the accommodating space through the duct unit

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 2

The substance removal unit may include a rotating brush

Methodology Applied
Scientific EffectMechanical removal: Brush

Implementation Method 3

The compression unit may include a plate configured to move in the collection unit along a horizontal axis and press substances collected in the collection unit against a side of the collection unit

Methodology Applied
Scientific EffectCompression: Compression

Data Source

PatentUS9096970B2Clothes treating apparatus
Publication Date: 2015.08.04 LG ELECTRONICS INC
  • US9096970B2 patent drawing
  • US9096970B2 patent drawing
  • US9096970B2 patent drawing

AI summary

An apparatus for treating clothes includes an accommodating space, an air supply unit, a duct unit, a filter unit, a substance removal unit and a collection unit that is separate from the filter unit and the substance removal unit. The accommodating space is configured to receive one or more clothing articles. The air supply unit is configured to supply air to the accommodating space. The duct unit is configured to guide discharge of air from the accommodating space. The filter unit is positioned to filter substances from air discharged from the accommodating space through the duct unit. The substance removal unit is configured to move substances remaining on a portion of the filter unit. The collection unit is configured to collect substances moved from the filter unit by the substance removal unit.