LED Cooling System with Forced Air Circulation in Flameproof Housing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
LED light sources in hazardous areas experience a significant reduction in light flux due to temperature increases, requiring cooling systems that also meet explosion-proof requirements, leading to increased costs and sizes when trying to compensate for this reduction.
Innovation Solution
An electrically operated air circulation system within a flameproof housing, utilizing a cooling fan to forcibly circulate air and dissipate heat, ensuring the LED light operates effectively across a wide temperature range without additional precautions, using an ex-d enclosure and combining interior and exterior cooling methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If cooling capacity is increased to compensate for light flux reduction, then light flux stability is improved, but device size and cost increase
Solution Approach 1:
The cooling system is segmented into multiple functional components: a cooling body with cooling ribs for heat dissipation, an air circulation means with fan and air circulation chamber for forced convection, and a LED module with integrated cooling. This segmentation allows each component to perform its specific function efficiently while keeping the overall device compact.
Solution Approach 2:
The air circulation chamber is nested within the flameproof housing, and the cooling body is integrated with the LED module. The fan is positioned within the air circulation chamber, creating a nested structure that maximizes space utilization and reduces the overall device size while maintaining effective cooling.
2Illumination intensity
If cooling capacity is increased to compensate for light flux reduction, then light flux stability is improved, but manufacturing cost increases
Solution Approach 1:
The cooling body and LED module are combined into an integrated assembly where the cooling body directly contacts the LED board. The air circulation means is merged with the housing structure, and the fan is integrated within the air circulation chamber. This merging reduces the number of separate components and assembly steps, thereby reducing manufacturing cost.
Solution Approach 2:
The flameproof housing serves multiple functions: it provides structural enclosure, acts as an explosion-proof barrier, and houses the air circulation chamber. The cooling body simultaneously serves as a heat sink and a structural support for the LED module. This multi-functionality reduces the need for additional components and reduces overall manufacturing cost.
3Temperature
If additional cooling measures are added, then heat dissipation is improved, but device complexity increases
Solution Approach 1:
The cooling ribs are strategically positioned on the cooling body to maximize surface area for heat dissipation. The fan is positioned at a specific location within the air circulation chamber to optimize airflow patterns. The cooling system focuses cooling effort where it is most needed (around the LED module) rather than uniformly throughout the entire device, simplifying the overall system design.
4Reliability
If cooling system is designed for hazardous areas, then safety is improved, but device size increases
Solution Approach 1:
The air circulation chamber is merged with the flameproof housing structure, eliminating the need for a separate enclosure. The cooling system components are integrated within the existing safety-certified housing, maintaining the explosion-proof integrity while avoiding additional size increase from separate safety enclosures.
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 air circulation system effectively maintains light flux by dissipating heat efficiently within the hazardous area environment, minimizing additional costs and size, while ensuring compliance with hazardous area regulations.
Implementation Method 1
an electrically operated air circulation means (6)... By this air circulation means, it is possible to forcibly circulate air and to sufficiently dissipate heat from the LED light
Implementation Method 2
a cooling system of a corresponding LED light does not only comprise a cooling body (5) as part of the cooling system... to sufficiently dissipate heat from the LED light
Data Source
AI summary
A cooling system (1) of a light-emitting diode-based light (2) is proposed, wherein said light comprises a completely closed light fitting (3) with a flame-proof housing (4). In the housing, a cooling body (5) as part of the cooling system (1) is arranged. The cooling system (1) further comprises an electrically operated air circulation means (6).By such a cooling system, it is possible to compensate reduction in light flux with minimal additional costs or minimal additional weight or size of the light, wherein the LED light is simultaneously usable in hazardous areas in a wide temperature range.