Acoustic Deflector with Stack Effect Cooling
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Solution Overview
Problem
Conventional cooling methods for heat-producing electronic components in speaker systems are inadequate, leading to undesirable thermal conditions due to inefficient heat transfer.
Innovation Solution
An acoustic deflector is configured to create a stack effect air flow, acting as a chimney to enhance natural convective cooling by facilitating the movement of heated air out of the enclosed volume and drawing in ambient air, thereby improving heat transfer from heat-producing components like audio amplifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling methods are used for heat-producing electronic components, then the speaker system structure remains simple, but thermal conditions deteriorate due to inefficient heat transfer
Solution Approach 1:
The acoustic deflector is designed to serve dual functions: acoustic deflection and convective cooling. By configuring the deflector to create a stack effect air flow pattern, it simultaneously performs its acoustic function and acts as a passive cooling mechanism, eliminating the need for separate active cooling components and maintaining structural simplicity while improving heat transfer efficiency
Solution Approach 2:
The cooling system utilizes natural convection through the stack effect, where heated air automatically rises and creates a continuous air flow cycle without requiring external power or active components. The system serves itself by using the heat generated by electronic components to drive the cooling air flow, converting a potentially harmful thermal byproduct into a useful cooling force
2Reliability
If active cooling systems are implemented to improve heat transfer, then thermal conditions improve, but device complexity increases
Solution Approach 1:
The patent replaces active mechanical cooling systems (such as fans or pumps) with a passive acoustic-convective system. The acoustic deflector uses sound wave energy and natural convection principles to create air flow, substituting mechanical active cooling with a non-mechanical passive system that achieves similar or better cooling efficiency without adding complexity
Solution Approach 2:
The invention extracts and utilizes the natural stack effect convection current within the speaker system enclosure, separating the cooling function from active mechanical components. By configuring the acoustic deflector to harness this natural air flow phenomenon, the system eliminates the need for additional cooling hardware while maintaining effective heat removal
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 solution effectively promotes heat transfer away from electronic components, maintaining suitable thermal conditions by establishing a stack effect air flow that enhances convective cooling, achieving a linear draft flow rate of 75-90 ft/min and reducing internal temperatures.
Implementation Method 1
An acoustic deflector forms an upper wall of an enclosed volume that contains electronics... A direct current (d/c) air flow that is produced via the stack effect can be used to provide natural convective cooling
Implementation Method 2
the movement of heated air out of the enclosed volume is improved... to provide natural convective cooling to promote heat transfer away from the heat producing electronic component
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A deflector assembly includes an acoustic deflector that defines at least a portion of an electronics compartment; and electronics mounted within the electronics compartment. The deflector assembly is configured to provide convective cooling of the electronics via a stack effect air flow through the electronics compartment.