Air Inlet Channel Layout Using TEC Pre-Cooling for Hot Intake Air
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Solution Overview
Problem
Electronic devices face challenges in effectively cooling heat-sensitive components due to hot air generated by other components or ambient temperatures, which can hinder the cooling process.
Innovation Solution
The implementation of a thermoelectric cooler (TEC) in the airflow path, where the cool side is positioned upstream of the heat-sensitive component to pre-cool the air and the hot side is downstream to release heat, effectively managing air temperature to enhance cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air is used to cool heat-sensitive components, then cooling is achieved, but the air temperature may be too high due to hot air from other components or ambient temperature
Solution Approach 1:
The thermoelectric cooler is positioned upstream in the airflow path to pre-cool the air before it reaches the heat-sensitive component. This preliminary cooling action ensures that the air temperature is reduced in advance, allowing effective cooling of the component even when ambient or upstream air is hot.
Solution Approach 2:
The thermoelectric cooler acts as an intermediary device between the hot air source and the heat-sensitive component. It mediates the temperature of the air by actively cooling it upstream, thereby protecting the component from excessive heat while managing the thermal environment effectively.
2Temperature
If a thermoelectric cooler is placed in the airflow path, then air temperature is pre-cooled upstream, but device complexity increases
Solution Approach 1:
The thermoelectric cooler replaces traditional mechanical cooling systems (such as refrigeration cycles with compressors and refrigerants) with a solid-state electronic device. This substitution eliminates complex mechanical components, reduces maintenance requirements, and integrates seamlessly into the airflow path without requiring additional mechanical infrastructure.
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 pre-cooling technique ensures that air reaching the heat-sensitive components is at a suitable temperature for effective cooling, even in scenarios where ambient or upstream air is too hot, thereby improving the cooling efficiency and maintaining component performance.
Implementation Method 1
a thermoelectric cooler (TEC) is placed in the airflow path such that a cool side of the TEC is in the airflow path upstream of the heat-sensitive component and a hot side of the TEC is in the airflow path downstream of the heat-sensitive component
Data Source
AI summary
An example electronic device may include a chassis, a circuit board in the chassis that includes a first active component, a number of fans, a number of guide walls that define an air inlet channel, and a thermoelectric cooler (TEC). There may be an airflow path such that, when the fans operate, air flows along the airflow path from an intake opening of the air inlet channel to an exhaust of the chassis, with the first active component being located in the airflow path downstream of the intake opening of the air inlet channel. A cold portion of the TEC may extend into the airflow path upstream of the first active component and a hot portion of the TEC may extend into the airflow path downstream of the first active component.