Inner Enclosure Adsorption Membrane for Disc Drive Contamination Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing disc drive technologies face challenges in maintaining low humidity and oxygen levels within enclosures, which can lead to issues like head-disc stiction, media corrosion, and excessive disc wear due to environmental contaminants.
Innovation Solution
A disc drive apparatus with an inner enclosure structure containing environment-adsorption material and an inner volume of gas at lower pressure than the outer enclosure, facilitated by an aperture-defining membrane that allows diffusion of molecules into the adsorption material, reducing turbulence and drag on moving parts and enhancing heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If environment-adsorption material is placed directly in the outer enclosure, then humidity and oxygen levels are reduced, but turbulence and drag on moving parts increase
Solution Approach 1:
The enclosure is divided into an inner enclosure and an outer enclosure, with the adsorption material contained within the inner enclosure. This segmentation allows the adsorption function to be separated from the moving parts, reducing turbulence while maintaining humidity control effectiveness.
Solution Approach 2:
The inner enclosure acts as an intermediary structure between the adsorption material and the outer enclosure environment. It allows controlled interaction through permeable walls while protecting the moving parts from direct exposure to turbulent flows generated by the adsorption material.
2Reliability
If inner enclosure structure is added within outer enclosure, then molecule adsorption is improved, but device complexity increases
Solution Approach 1:
The inner enclosure structure serves multiple functions simultaneously: it contains the adsorption material, provides a controlled environment for adsorption, reduces turbulence through its design, and facilitates heat transfer. This multi-functionality justifies the additional structural complexity by consolidating several requirements into a single integrated component.
3Productivity
If aperture-defining membrane is used to facilitate diffusion, then molecule adsorption efficiency increases, but manufacturing complexity increases
Solution Approach 1:
The aperture-defining membrane is a thin film structure that provides controlled permeability for molecule diffusion while maintaining the integrity of the inner enclosure. Its flexible nature allows for efficient molecular transport through selective permeability, and the thin film design minimizes manufacturing complexity compared to rigid structured alternatives.
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 effectively maintains low humidity and oxygen levels, reducing adverse impacts on disc drives, improving read/write throughput, decreasing errors, and extending the longevity of mechanical components.
Implementation Method 1
The inner enclosure structure is also provided with an aperture-defining membrane that facilitates a diffusion of the second-type of molecules into the inner enclosure structure and into contact with the environment-adsorption material
Implementation Method 2
The second-type of molecules is adsorbed into the first-type of molecules, which reduces the volumetric pressure in the outer enclosure
Data Source
AI summary
Various aspects of the present disclosure are directed toward a disc drive apparatus having an inner enclosure structure that resides within an outer disc drive enclosure. The inner enclosure structure includes an environment-adsorption material, an inner volume of gas, and an aperture-defining membrane. The environment-adsorption material combines a first-type of molecules with a second-type of molecules that are present in the outer disc drive enclosure. Additionally, the aperture-defining membrane facilitates diffusion of the second-type of molecules into the inner enclosure structure and into contact with the environment-adsorption material to adsorb the second-type of molecules into the first-type of molecules, which reduces the volumetric pressure in the outer disc drive enclosure.