Laundry Appliance Air Filter Latch to Prevent Unauthorized Removal
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Solution Overview
Problem
Laundry appliances face issues with unauthorized or unintentional removal of air filters, which can expose internal parts and impair the heating system performance due to accumulated particles.
Innovation Solution
A laundry appliance with a housing that includes a latch mechanism to releasably engage the air filter assembly, preventing unauthorized removal and ensuring secure retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the air filter assembly is made removable for cleaning purposes, then the air filter can be cleaned by removing accumulated particles, but the air filter assembly may be unintentionally or unauthorized removed exposing internal parts
Solution Approach 1:
The air filter assembly is segmented into a filter portion and a housing portion that can be separated. The filter portion can be removed for cleaning while the housing portion remains in the appliance, maintaining retention functionality while enabling cleaning access.
Solution Approach 2:
A latch mechanism is pre-configured on the air filter assembly to automatically engage with the housing when the assembly is inserted. This preliminary engagement action ensures the filter assembly is securely retained before any cleaning or operation occurs, preventing unintentional removal.
2Reliability
If the air filter assembly is securely retained to prevent unauthorized removal, then internal parts are protected from exposure, but the air filter becomes difficult to remove for cleaning
Solution Approach 1:
The air filter assembly is divided into separable components where the filter element can be detached from the housing. This segmentation allows the housing with its secure latch mechanism to remain in place while the filter portion is removed for cleaning, maintaining both retention security and cleaning ease.
Solution Approach 2:
The latch mechanism is designed with dynamic characteristics - it automatically engages to provide strong retention during normal operation, but can be easily disengaged when intentional removal is needed. The latch transitions between a locked state for security and an unlocked state for maintenance access.
3Reliability
If a latch mechanism is added to retain the air filter assembly, then unauthorized removal is prevented, but the device complexity increases
Solution Approach 1:
The latch mechanism is designed as a self-servicing system that automatically engages when the air filter assembly is inserted into the housing. The latch uses the insertion motion itself to trigger the locking action, eliminating the need for separate manual locking steps or complex control systems, thus minimizing added complexity while ensuring reliable retention.
Data Source
AI summary
A laundry appliance includes a cabinet. The cabinet defines an interior volume. The laundry appliance also includes an air filter assembly. The air filter assembly is positioned in the cabinet. The air filter assembly includes a latch. The latch is configured to releasably engage a housing of the laundry appliance.