Dryer Door Deflector for Airflow Portal Blockage Prevention
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Solution Overview
Problem
In laundry treating appliances like clothes dryers, laundry items often accumulate near the air inlet or outlet due to tumbling action and airflow suction, leading to inefficiencies and potential damage, especially when the inlet/outlet is located near the door, and existing solutions like cast glass deflectors are expensive and occupy valuable space.
Innovation Solution
A rotatable drum with a door featuring a flat panel and a deflector that extends over the airflow portal to deflect laundry items away from the outlet when closed, preventing accumulation and improving airflow efficiency without the need for heavy, expensive cast glass components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cast glass deflector is used to prevent laundry accumulation near the airflow portal, then laundry items are effectively diverted away from the outlet, but the door becomes heavy and expensive to manufacture
Solution Approach 1:
The deflector is separated from the door panel and mounted independently within the treating chamber. This allows the door to remain lightweight while the deflector performs the laundry diversion function. The deflector can be a separate plastic or metal component that attaches to the door assembly without requiring the entire door to be heavy cast glass.
Solution Approach 2:
Instead of using expensive cast glass, the patent employs a simpler deflector component that replicates the essential function of diverting laundry. The deflector can be made from inexpensive materials like plastic or thin metal, achieving the same protective effect without the cost and weight of cast glass manufacturing.
2Reliability
If a cast glass deflector is used to prevent laundry accumulation, then laundry items are diverted from the outlet, but the treating chamber space is substantially occupied
Solution Approach 1:
The deflector is designed as a separate, space-efficient component mounted near the airflow portal rather than as a large cast glass panel. This segmented approach allows the deflector to occupy minimal space while still effectively guiding laundry away from the outlet, preserving more treating chamber volume for actual drying capacity.
Solution Approach 2:
The deflector utilizes the spatial dimension near the airflow portal strategically, extending only as far as needed to redirect laundry. By positioning it in the narrow space between the door and the outlet, it achieves effective laundry diversion without substantially occupying the treating chamber volume used for drying clothes.
3Reliability
If a cast glass deflector is used, then laundry accumulation near the outlet is prevented, but manufacturing costs increase
Solution Approach 1:
The patent replaces expensive cast glass manufacturing with a simpler deflector component that can be produced through standard molding or fabrication processes. This copying approach achieves the same functional result—preventing laundry accumulation—while dramatically reducing manufacturing complexity and cost.
Solution Approach 2:
The deflector is designed as a cost-effective component that can be manufactured inexpensively and replaced if needed. Rather than investing in expensive cast glass, the patent uses affordable materials and processes, making the overall door assembly more economical while maintaining effective laundry diversion.
Data Source
AI summary
A laundry treating appliance treats a laundry load according to at least one cycle of operation. A rotatable drum defines a treating chamber and includes an open face through which access is provided to the treating chamber. An air system supplies air to and exhausts air from the treating chamber and includes an airflow portal adjacent the open face and in fluid communication with the treating chamber. A door includes a panel with a flat surface, the door selectively movable to prevent access through the open face, and the flat surface facing the treating chamber when the door closes the open face. A deflector extends away from the flat surface and at least partially overlies the airflow portal when the door closes the open face. The deflector deflects items in the laundry load away from the airflow portal when the door is closed.