Condenser Unit Locking Mechanism for Dryer Maintenance Access

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Solution Overview

Problem

Conventional drying machines with condenser units require frequent maintenance to clean accumulated lint, necessitating a user-friendly and secure locking mechanism for easy removal and reinstallation of the condenser unit.

Innovation Solution

A locking mechanism featuring rotatable locking arms with a lock member that interlocks with a lock slot on the condenser unit, guided by a locking guide with visual indication arrows for locking and unlocking directions, ensuring secure and accurate installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a locking mechanism is provided for the condenser unit, then the condenser unit can be securely locked in place during operation, but the structure becomes more complex and requires additional components

Engineering Contradiction:
Improvesecure lockingVSAvoidlocking mechanism structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking mechanism is divided into separate functional components: locking arms (3) that pivot independently, lock members (7) that engage with lock slots (11), and a locking guide (4) that directs movement. This segmentation allows each component to perform its specific function while keeping the overall structure manageable and maintainable.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The locking mechanism is designed to be self-latching through the interaction between the lock members (7) and lock slots (11). When the condenser unit (2) is pushed into the drying machine (1), the locking arms (3) automatically pivot and the lock members (7) automatically engage with the lock slots (11) through the guiding action of the locking guide (4), providing secure locking without requiring additional actuation mechanisms.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If the condenser unit is made slidably removable for maintenance, then cleaning access is improved, but the risk of improper installation and locking issues increases

Engineering Contradiction:
Improvemaintenance accessVSAvoidinstallation accuracy
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The locking guide (4) acts as an intermediary element that mediates between the condenser unit (2) and the locking arms (3). It provides a defined pathway that guides the lock members (7) during insertion, ensuring they correctly engage with the lock slots (11). This intermediary structure eliminates the need for users to precisely align components, as the locking guide (4) automatically directs proper engagement.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

Visual indication means are provided at the extremities of the locking guide (4) to indicate whether the condenser unit (2) is properly locked or unlocked. These visual indicators (such as arrows or colored markers) allow users to quickly verify correct installation without needing to understand the internal locking mechanism, thereby improving installation reliability while maintaining ease of operation.

Inventive Principle:
Principle #32Color changes

3Loss of information

If visual indication means are added to show locking status, then user certainty is improved, but the device complexity and manufacturing cost increase

Engineering Contradiction:
Improvelocking status informationVSAvoidindication system
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The visual indication system is passively integrated into the locking guide (4) structure itself. The indication means (such as arrows or markers at the extremities) are formed as part of the locking guide (4) or associated components, rather than being separate active indicators. This allows the system to communicate locking status automatically based on the mechanical state, without requiring additional power sources, motors, or complex electronics.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP2951344B1Clothes dryer condenser unit locking mechanism
Publication Date: 2020.01.15 ARCELIK AS
  • EP2951344B1 patent drawingFigure 1
  • EP2951344B1 patent drawingFigure 2~3
  • EP2951344B1 patent drawingFigure 4~6

AI summary

The present invention relates to a drying machine (1) having a condenser, said drying machine (1) having a condenser unit (2) locking mechanism. The drying machine (1) of the present invention comprises a condenser unit (2) slidably removable therefrom, said drying machine (1) further comprising a locking mechanism having at least one locking arm (3) for effecting securely locking of said condenser unit (2) in said drying machine (1).