Oven Electronics Chamber Cooling With Segmented Airflow Paths
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Solution Overview
Problem
Conventional oven appliances have inefficient cooling systems that draw air from a single inlet location, resulting in uneven cooling distribution, where the back typically requires less cooling while the front, housing control electronics, experiences the highest temperatures and requires the most cooling.
Innovation Solution
A cooling system with air flow passageways between the cabinet and insulated cooking chamber, including side air flow passageways and an exhaust duct with a fan that draws cooling air from the control panel and side panels to efficiently cool the electronics chamber, optimizing air mass flow rate to the areas needing it most.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air is drawn from a single inlet location at the back of the oven appliance, then the cooling system is simple to implement, but the cooling distribution is uneven with the front electronics chamber receiving insufficient cooling
Solution Approach 1:
The cooling system is segmented into multiple air inlet locations (front and back) with separate flow paths. The front inlet specifically targets the electronics chamber while the back inlet serves other areas, allowing differentiated cooling strategies for different thermal zones within the appliance.
Solution Approach 2:
Different regions of the oven appliance are provided with different cooling characteristics. The front electronics chamber, which generates more heat and requires more cooling, is equipped with a dedicated front air inlet providing higher cooling intensity, while the back region uses a separate inlet with lower cooling requirements.
2Quantity of substance
If air is drawn from the back of the oven appliance, then the inlet structure is simple, but the mass flow rate distribution is uneven with excessive flow at the back and insufficient flow at the front
Solution Approach 1:
The air intake system is divided into separate inlet channels at the front and back of the appliance. Each inlet has its own flow path that can be independently optimized, allowing precise control over the mass flow rate delivered to different regions without requiring complex redistribution mechanisms.
Solution Approach 2:
Instead of drawing all air from a single back inlet and attempting to redistribute it forward, the system inverts the approach by adding a front inlet that directly supplies air to the front electronics chamber, eliminating the need for long-distance air transport and complex flow redistribution.
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
This design enhances thermal management by ensuring that the components requiring the most cooling, such as the control electronics, receive adequate airflow, thereby maintaining optimal temperatures and improving overall appliance performance.
Implementation Method 1
An exhaust fan is positioned within the duct and is configured for drawing cooling air through the side air flow passageway, into the electronics chamber, and through the exhaust duct
Data Source
AI summary
A cooling system for an oven appliance is provided. The oven appliance includes an insulated chamber positioned within a cabinet such that a plurality of air flow passageways are defined therebetween. A control panel is positioned at a top, front of the oven appliance and defines an electronics chamber which is in fluid communication with a side air flow passageway. An exhaust duct is positioned between the insulated chamber and the cabinet and is placed in fluid communication with the electronics chamber. An exhaust fan is positioned within the duct and is configured for drawing cooling air through the side air flow passageway, into the electronics chamber, and through the exhaust duct to an outlet where it is exhausted from the oven appliance.