Dryer Filter Assembly with Rotating Blade Lint Compression

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Solution Overview

Problem

Existing clothes dryers require frequent filter cleaning to prevent lint accumulation, which impedes air flow and reduces heat exchange efficiency, causing inconvenience and potential exposure to arsenic acid during the cleaning process.

Innovation Solution

A filter assembly with a primary and secondary filter system, where the primary filter is detachably inserted into the secondary filter, and a rotating blade mechanism compresses collected lint as the primary filter is drawn out, allowing for easy cleaning without separating the filter from the dryer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a filter is installed to collect lint, then lint accumulation is prevented from sticking to the heat exchange apparatus, but air flow becomes impeded and heat exchange efficiency deteriorates as lint accumulates in the filter

Engineering Contradiction:
Improveheat exchange efficiencyVSAvoidfilter cleaning frequency
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The filter assembly is divided into a primary filter and a secondary filter that can be separately removed and cleaned. This segmentation allows users to access and clean the filters more easily without disassembling the entire dryer, reducing the burden of frequent cleaning while maintaining heat exchange efficiency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filter assembly is designed with a structure that allows preliminary cleaning action by simply removing the secondary filter from the primary filter. This preliminary design enables users to clean the filters immediately after use without additional complex steps, addressing the need for frequent cleaning in a convenient manner.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If the filter is cleaned regularly to remove lint, then dryer performance is maintained, but user convenience is reduced due to the need to separate and manually clean the filter

Engineering Contradiction:
Improvedryer performanceVSAvoidcleaning convenience
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The filter assembly is segmented into removable primary and secondary filter components that can be easily separated and cleaned independently. This segmentation maintains dryer performance by ensuring thorough cleaning while improving user convenience by eliminating the need to disassemble the entire dryer for filter maintenance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filter assembly is designed to be self-service friendly, allowing users to easily remove, clean, and reassemble the filter components without requiring technical expertise or special tools. The simple separation and reattachment mechanism enables regular maintenance to be performed quickly and conveniently by the user.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If manual cleaning of the filter is performed, then lint is removed, but exposure to arsenic acid and water-based cleaning requirements create additional inconvenience

Engineering Contradiction:
Improvelint removalVSAvoidarsenic acid exposure
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The secondary filter is designed to be easily extracted from the primary filter, allowing users to remove and clean the secondary filter separately. This extraction design minimizes exposure to harmful substances by enabling users to handle only the outer secondary filter during cleaning, reducing contact with lint and potential arsenic acid residues that may be trapped in the primary filter.

Inventive Principle:
Principle #2Taking out (Extraction)

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

Reduces the frequency of filter cleaning and maintains dryer performance by compressing lint within the filter assembly, minimizing disruptions to continuous drying operations and avoiding the need for manual lint removal and water-based cleaning.

Implementation Method 1

at least one blade being rotatably coupled to the secondary filter and configured to compresses first foreign substances collected in the primary filter based on the primary filter moving in a first direction in which the primary filter is drawn out from the secondary filter

Methodology Applied
Scientific EffectMechanical compression: Compression

Data Source

PatentEP3810844B1Filter assembly and dryer for the same
Publication Date: 2023.05.10 SAMSUNG ELECTRONICS CO LTD
  • EP3810844B1 patent drawingFigure 1
  • EP3810844B1 patent drawingFigure 2
  • EP3810844B1 patent drawingFigure 3~5A

AI summary

A filter assembly includes a primary filter; a secondary filter into which the primary filter is detachably inserted; a case detachably coupled to the primary filter and comprising a plurality of air inlet holes; and at least one blade being rotatably coupled to the secondary filter and configured to compresses first foreign substances collected in the primary filter based on the primary filter moving in a first direction in which the primary filter is drawn out from the secondary filter.