Electronics Chamber Cooling Using Dual-Zone Airflow Separation
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Solution Overview
Problem
Sensitive electronics, such as optical camera systems, fail in high heat environments due to radiant heat from appliances like ovens, which exceeds their thermal limits, necessitating a cooling solution to maintain operational integrity and extend lifespan.
Innovation Solution
A multi-zone cooling system is implemented, utilizing external air to create a thermal break zone that disrupts radiant heat and a separate cooling zone to maintain a safe temperature for sensitive electronics, with a flow separator to manage airflow and separate heated and cooled air streams effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If sensitive electronics are placed in a high heat environment, then the appliance can perform high-temperature cooking functions, but the electronics will overheat and fail due to exceeding thermal limits
Solution Approach 1:
The patent divides the internal environment into two distinct temperature zones: a high-temperature heating chamber for cooking and a low-temperature electronics chamber for component protection. This spatial segmentation allows the appliance to maintain high cooking temperatures while keeping sensitive electronics in a cool, protected environment, thereby resolving the contradiction between achieving high cooking temperatures and maintaining electronics reliability.
Solution Approach 2:
The patent introduces an intermediary cooling system including cooling fans, heat sinks, and thermal barriers that act as mediators between the hot heating chamber and the electronics chamber. These intermediary elements transfer heat away from the electronics and create a thermal buffer zone, enabling the electronics to operate reliably while the appliance performs high-temperature cooking functions.
2Reliability
If traditional cooling methods are used for electronics, then overheating can be prevented, but the system complexity and manufacturing costs increase
Solution Approach 1:
The patent implements a self-service cooling approach where the cooling system utilizes the appliance's existing operational characteristics. The cooling fans operate during heating cycles to actively manage thermal zones, and the design leverages natural convection patterns and strategically placed heat sinks to passively dissipate heat. This self-managing cooling approach prevents overheating while avoiding the need for complex external cooling infrastructure, thereby maintaining electronics reliability without significantly increasing system complexity.
3Temperature
If heat-resistant components are used for electronics, then electronics can operate in high heat environments, but manufacturing costs and component complexity increase
Solution Approach 1:
The patent extracts the sensitive electronics from the high-temperature environment and places them in a separate, temperature-controlled electronics chamber. By removing the electronics from direct exposure to high heat, the system can use standard, cost-effective electronic components rather than expensive heat-resistant specialized components. This extraction strategy maintains the required operating temperature range for electronics while significantly reducing manufacturing costs and simplifying the supply chain.
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 solution effectively prevents overheating of sensitive electronics, reduces the need for heat-resistant components, simplifies appliance construction, and enhances manufacturing efficiency by maintaining the electronics within their operational temperature range, thereby extending their lifespan and reducing costs.
Implementation Method 1
an air intake that flows air external to the heating chamber and electronics chamber into the electronics chamber axially to the flow separator, such that the flow forms a thermal break zone adjacent the heating chamber on one side of the flow separator, and a cooling zone on an other side of the flow separator about the sensitive electronics
Data Source
AI summary
An apparatus, system and method of cooling sensitive electronics in a heated environment. The apparatus, system and method include the sensitive electronics adjacent to a heating chamber, and within an electronics chamber; a flow separator axially extending through the electronics chamber; and an air intake that flows air external to the heating chamber and electronics chamber into the electronics chamber axially to the flow separator, such that the flow forms a thermal break zone adjacent the heating chamber on one side of the flow separator, and a cooling zone on an other side of the flow separator about the sensitive electronics.