Dryer appliance and ventilation assembly
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Solution Overview
Problem
Dryer appliances face issues with air leaks and lint collection at the connection points of ducts and conduits in the ventilation assembly, leading to reduced airflow efficiency and increased drying cycle times.
Innovation Solution
A dryer appliance design featuring a sealing gasket radially positioned between the attachment collar and the entrance of the housing, forming an air-tight seal and improving assembly ease by allowing the front duct to be easily moved relative to the impeller housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If axial seals are used to seal connection points between ducts and conduits, then air leaks are prevented, but lint and debris collect on the seal causing air restrictions
Solution Approach 1:
The sealing function is extracted from the connection structure itself and implemented through a separate gasket element positioned at the front duct entrance. This separates the sealing function from the axial seal location, preventing lint accumulation while maintaining air leak prevention.
Solution Approach 2:
A gasket acts as an intermediary sealing element between the front duct and housing entrance. This intermediary component provides effective sealing without the lint collection issues associated with axial seals sandwiched between conduits.
2Reliability
If axial seals are used to seal connection points, then air leaks are prevented, but assembly becomes more difficult due to alignment requirements
Solution Approach 1:
The ventilation assembly is segmented into modular components (front duct, housing, gasket) that can be assembled independently. The gasket is positioned on the front duct rather than requiring alignment between separate conduits, simplifying assembly.
Solution Approach 2:
The gasket serves as an intermediary component that facilitates easy assembly between the front duct and housing entrance without requiring precise alignment, unlike axial seals that must be sandwiched between multiple conduits.
3Reliability
If axial seals are used at connection points, then air leaks are prevented, but airflow restrictions increase drying cycle time
Solution Approach 1:
The sealing function is extracted from the axial seal location and implemented at the front duct entrance instead. This eliminates the air restrictions caused by lint accumulation on axial seals while maintaining effective sealing.
Solution Approach 2:
The gasket as an intermediary sealing component prevents air leaks without creating the airflow restrictions that occur when lint accumulates on axial seals, thereby maintaining optimal airflow and reducing drying cycle time.
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
The sealing gasket prevents air leaks and lint collection, maintaining airflow efficiency and reducing drying cycle times by ensuring a direct axial flow path and easy assembly of the ventilation assembly components.
Implementation Method 1
The sealing gasket may be radially positioned between the attachment collar and the entrance
Implementation Method 2
The impeller may be rotatable about an axial direction to urge a flow of air from the chamber of the drum to the vent of the cabinet
Data Source
AI summary
A dryer appliance or ventilation assembly, as provided herein, may include an impeller, a housing, a front duct, and a sealing gasket. The impeller may be rotatable about an axial direction to urge a flow of air. The housing may enclose the impeller within a cabinet. The housing may define an entrance upstream of the impeller to permit air into the housing. The front duct may include an attachment collar defining a duct outlet. The attachment collar may be received within the entrance. The sealing gasket may be radially positioned between the attachment collar and the entrance.