Laminarizer-Integrated Cleanroom Lighting for Low-Turbulence Illumination
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Solution Overview
Problem
In clean room environments, especially operating theaters, the existing lighting systems often fail to provide sufficient light intensity while maintaining low-turbulence air flows, as ceiling lamps alone are insufficient, and surgical lights with gimbals disturb the laminar air flow, leading to turbulence and potential contamination.
Innovation Solution
Integrating the effective exit surface of light sources into laminarizers as thin-walled tubular passage elements that protrude above the laminarizer level, creating a sharp flow separation edge to maintain low-turbulence flow and increase luminance by positioning light sources closer to the working area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If surgical lights with gimbals are used to increase light intensity in the work area, then illumination is improved, but the laminar air flow is disturbed and turbulence occurs
Solution Approach 1:
The patent combines the lighting function and laminar flow function into a single integrated ceiling lamp unit. The light source is positioned within the laminar flow generator structure, allowing both illumination and laminar flow generation to occur from the same device, eliminating the need for separate surgical lights that would disturb the air flow
Solution Approach 2:
The ceiling lamp is designed to perform multiple functions simultaneously: generating laminar air flow and providing illumination. The device integrates a light source, diffuser, and air flow generation components into a single multi-functional unit that serves both lighting and air circulation purposes
2Object-affected harmful factors
If ceiling lamps are used to provide illumination, then the air flow remains stable, but the light intensity in the work area is insufficient
Solution Approach 1:
The patent positions the light source within the three-dimensional structure of the laminar flow generator, utilizing the vertical space and structural volume to optimize light distribution. The light is emitted from multiple surfaces including the diffuser and tube walls, creating illumination from multiple spatial dimensions rather than a single point source
3Illumination intensity
If light sources are positioned close to the working area to increase luminance, then illumination is improved, but turbulence may be generated in the air flow
Solution Approach 1:
The lighting and air flow generation functions are merged into a single integrated unit positioned at the ceiling. This eliminates the need to position separate light sources close to the working area, as the light is emitted from the ceiling-level integrated device, providing sufficient illumination without introducing turbulence
Solution Approach 2:
The patent uses a diffuser with specific optical properties to distribute light locally and uniformly across the working area. The diffuser material and structure are designed to optimize light distribution while maintaining the laminar flow characteristics, creating different functional zones within the device
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 configuration ensures a low-turbulence flow and higher luminance on the working level, reducing the need for repositioning surgical lights and minimizing turbulence, thereby enhancing both air quality and lighting efficiency.
Implementation Method 1
create a low-turbulence flow
Implementation Method 2
creating a sharp flow separation edge
Implementation Method 3
effective exit surface of light sources
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The clean room lighting device has a laminarizer (7) and several light sources (10) which are arranged in closed housings (9). The housings (9) are inserted into the laminarisator (7) in the form of laminarisator passage elements (LPE) and have a flow separation edge on their downstream side, as a result of which a flow forms a short distance downstream of the housing (9) which is low-turbulence or laminar to the working plane.