Improvements introduced in rack door
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Solution Overview
Problem
Current telecommunication racks face inefficiencies in airflow and cooling due to fragile, slow-to-manufacture stamped steel doors with insufficient cold air capture, leading to suboptimal energy usage and assembly challenges.
Innovation Solution
The introduction of a rack door with transparent injected polycarbonate shutters providing an 88% air inlet or outlet opening, equipped with an RGB LED ribbon for temperature indication, and a protective grid, allowing for directed airflow and improved assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If stamped steel perforated screens are used for rack doors, then 75% opening is achieved for cold air intake, but cold air capture is insufficient
Solution Approach 1:
The patent applies curvature to the shutter design, creating an aerodynamic profile that actively captures and directs cold air flow. The curved shutter surface optimizes air intake by following airflow patterns, significantly improving cold air capture efficiency compared to flat stamped screens while maintaining manufacturability through injection molding processes.
2Reliability
If drilled holes are used for perforation, then air flow opening is achieved, but manufacturing is slow and the plate is fragile
Solution Approach 1:
The patent transitions from discrete drilled holes to a porous injection-molded structure with integrated air intake features. The porous design provides sufficient airflow opening while creating a more robust, monolithic structure that eliminates the fragility associated with drilled holes. The injection molding process enables high-speed manufacturing compared to traditional drilling methods.
Solution Approach 2:
The patent employs polycarbonate material with integrated aerodynamic features, combining structural integrity with airflow optimization in a single component. This composite approach replaces the separate drilled steel plate with an integrated molded structure that is both durable and manufacturable at high speed.
3Manufacturing precision
If low thickness is used for the door, then material usage is reduced, but the finish becomes wavy requiring mechanical shields
Solution Approach 1:
The curved aerodynamic profile of the injection-molded shutter inherently provides structural rigidity and eliminates waviness in the surface finish. The curved geometry distributes stresses more evenly across the thin wall structure, maintaining a smooth finish without requiring additional mechanical shields or support structures, thereby simplifying assembly.
4Manufacturing precision
If multiple mechanical shields are added to fix finish issues, then surface quality is improved, but assembly system becomes slow
Solution Approach 1:
The patent merges the shutter body and aerodynamic features into a single injection-molded component, eliminating the need for separate mechanical shields and support structures. This integration maintains excellent surface finish quality while significantly reducing assembly steps and improving production speed.
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 enhances airflow efficiency, reduces energy consumption by up to 40%, and simplifies assembly while providing a durable and aesthetically pleasing solution for data center environments.
Implementation Method 1
an RGB LED ribbon configured to indicate, by changing colors, the temperature
Data Source
AI summary
A rack door of a rack usable to store telecommunication equipment is provided. The rack door of the rack includes either a front door or a rear door of the rack and is equipped with at least two shutters of transparent injected polycarbonate with a front lens and an opening of 88% for air inlet or outlet. The rack includes an internal temperature indicator having an RGB LED ribbon configured to indicate, by changing colors, the temperature. Each shutter is attachable to at least one other shutter by a lower fitting and a top fitting, each shutter comprising a protective grid on a rear flat portion thereof, and side baffles to receive projection of light from the RGB LED ribbon.