Warming Drawer Drip Guard for Spill-Safe Electrical Connections
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Solution Overview
Problem
Conventional warming drawers have limited heat transfer efficiency, leading to hot spots and complex assembly and repair processes, and are prone to damage from spills and contaminants contacting electrical components.
Innovation Solution
A modular warming drawer design with a ceramic/glass heating element and a drip guard that guides spills away from electrical components, featuring a support plate with gasket strips and a frame that secures the heating element, and a drip guard extending from the frame to prevent liquids from reaching electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional heating element design is used, then the structure is simple, but heat transfer efficiency is limited and hot spots occur
Solution Approach 1:
The heating element is divided into multiple independent heating zones with separate control, allowing each zone to be optimized for uniform heat distribution and preventing hot spots while maintaining structural simplicity
2Ease of operation
If electrical components are exposed for easy access, then ease of operation is improved, but reliability decreases due to spill and contaminant damage
Solution Approach 1:
A drip guard structure is introduced as an intermediary element between the electrical components and the external environment (spills/contaminants), allowing electrical components to remain accessible while being protected from liquid damage
3Reliability
If additional protective components are added, then reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The drip guard is integrated with existing structural components of the warming drawer, combining protective functionality with structural support to prevent liquid damage without adding separate protective components or increasing manufacturing complexity
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 modular design enhances heat transfer uniformity, simplifies assembly and repair, and effectively prevents electrical damage from spills and contaminants using a cost-effective, single-piece drip guard solution.
Implementation Method 1
a heating element 14 commonly is fixed to the interior of the housing 2, such as on the floor of the housing 2. In operation, the drawer 4 moves over the heating element 14 when the drawer 4 is in a closed position inside the housing 2 to heat the items P in the drawer 4
Data Source
AI summary
A household appliance includes a warming drawer housing having an interior chamber, and a warming drawer module in the interior chamber. The module includes a support plate, a glass heating element forming a floor surface of the module for receiving items to be warmed, a gasket strip covering an upper perimeter surface of the glass heating element, a frame disposed over the gasket strip and the upper perimeter surface, and a first electrical connection disposed adjacent to an edge of the frame. The frame includes a drip guard projecting outward from the edge of the frame and overhanging the first electrical connection to guide a liquid from a surface of the frame or the glass heating element away from the first electrical connection such that the liquid does not come into contact with the first electrical connection.