Dryer Air Passage Clog Detection With Remote Lint Alerts

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Solution Overview

Problem

Conventional dryers lack an effective method to monitor and communicate the clogging degree of air passages, leading to increased drying time, power consumption, and potential contamination of laundry due to unchecked lint accumulation.

Innovation Solution

A clogging detecting system that includes a dryer with a remote controlling device, allowing users to assess the clogging degree of air passages and specific parts like lint filters and exhaust ducts through power line or radio frequency communication, providing real-time feedback and warnings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the dryer operates without a clogging detection system, then the device complexity is reduced, but the drying time increases and productivity decreases due to unchecked lint accumulation

Engineering Contradiction:
Improveclogging detection systemVSAvoiddrying time
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent implements a feedback mechanism where a sensor detects lint accumulation in the exhaust passage and sends signals to a controller. The controller then notifies the user through visual or audible alerts, enabling timely maintenance. This feedback loop prevents severe clogging that would extend drying time, thus maintaining productivity without requiring continuous manual inspection.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The dryer performs self-monitoring of its own operational status through integrated sensors and controllers that automatically detect clogging conditions. This eliminates the need for users to manually check the exhaust passage, allowing the system to serve itself in detecting problems before they significantly impact drying time and productivity.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If the filter is cleaned frequently to prevent clogging, then the air passage remains clear and drying efficiency is maintained, but the ease of operation decreases due to inconvenient and complicated filter cleaning

Engineering Contradiction:
Improvefilter cleaningVSAvoidair passage clearance
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The sensor provides continuous monitoring of lint accumulation levels and sends feedback to the controller. The controller notifies users only when cleaning is actually needed, eliminating unnecessary frequent cleanings. This feedback-based approach maintains air passage clearance reliability while improving ease of operation by reducing the frequency and complexity of user intervention.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary detection of lint accumulation before it reaches critical levels. By notifying users in advance, the system allows for planned, simple cleaning operations rather than urgent, complicated interventions. This preliminary action maintains reliability by preventing severe clogging while improving ease of operation through timely, straightforward maintenance.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If the exhaust hole is designed to pass through the outer wall, then the air passage structure is simplified, but the measurement precision of clogging degree cannot be achieved without additional detection systems

Engineering Contradiction:
Improveexhaust hole structureVSAvoidclogging degree
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent introduces a sensor as an intermediary element that indirectly measures clogging degree by detecting lint accumulation in the exhaust passage. This intermediary measurement approach enables precise clogging detection without altering the simple exhaust hole structure, thus maintaining structural simplicity while achieving the required measurement precision for effective monitoring.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Device complexity

If no clogging information is provided to the user, then the device complexity is minimized, but the loss of information occurs as users cannot check the current clogging degree or clogged parts

Engineering Contradiction:
Improveinformation provision systemVSAvoidclogging information
Core Design Contradiction:
Device complexityVSLoss of information

Solution Approach 1:

The controller receives detection signals from the sensor and provides feedback to the user through visual displays or audible notifications. This feedback mechanism communicates clogging degree and location information to users without requiring complex communication hardware, thus minimizing device complexity while preventing information loss about the exhaust passage condition.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS8387272B2Clogging detecting system for dryer
Publication Date: 2013.03.05 LG ELECTRONICS INC
  • US8387272B2 patent drawing
  • US8387272B2 patent drawing
  • US8387272B2 patent drawing

AI summary

The present invention discloses a clogging detecting system for a dryer which can display a clogging degree or state of an air passage to the user through a remote controlling device. The clogging detecting system for the dryer includes the dryer for judging the clogging degree of the air passage, and sending the clogging degree to a remote controlling device, and the remote controlling device for receiving the clogging degree from the dryer, and displaying the clogging degree through a display unit.