Disk Drive Test Slot Thermal Control via Segmented Air Movers
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Solution Overview
Problem
Existing disk drive testing systems face challenges in precisely controlling the temperature of multiple test slots simultaneously, leading to inefficiencies and potential damage to disk drives due to inadequate temperature regulation.
Innovation Solution
A disk drive test slot thermal control system that includes a housing with an air mover, thermoelectric devices, and temperature sensors, allowing for precise control of air temperature through heating or cooling, and a method to manage power distribution across a cluster of test slots to optimize temperature adjustments based on available power and neighboring slot conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single common air flow is used to control temperature for multiple disk drive devices, then the device complexity is reduced, but the temperature control precision for each individual device deteriorates
Solution Approach 1:
The patent divides the common air flow system into multiple independent air movers, with each air mover dedicated to a specific test slot. This segmentation allows each slot to have independent temperature control while maintaining overall system manageability. The air movers can be individually controlled to provide precise temperature regulation for each disk drive device without requiring a completely separate complex system for each slot.
2Measurement precision
If temperature is controlled for each individual test slot independently, then the temperature control precision is improved, but the use of energy increases
Solution Approach 1:
The patent implements a shared air supply system where a common air source serves multiple air movers. The air flow path and cooling infrastructure are designed to be universally applicable across all test slots, allowing each slot to have independent temperature control capability while sharing the energy burden of air generation and distribution. This multi-functional design reduces redundant energy consumption compared to completely independent systems for each slot.
3Reliability
If temperature fluctuations are minimized for accurate test conditions, then the reliability of testing is improved, but the device complexity increases due to additional control mechanisms
Solution Approach 1:
The patent incorporates temperature sensors in each test slot that provide feedback to the control system. This feedback mechanism allows the air movers to automatically adjust their operation to maintain stable temperature conditions, ensuring reliable testing without requiring overly complex manual control systems. The feedback loop enables automatic compensation for temperature variations while keeping the overall system architecture relatively simple.
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 enables precise and efficient temperature control within each test slot, reducing the risk of damage to disk drives and optimizing power usage by coordinating temperature changes across multiple slots based on available resources and neighboring conditions.
Implementation Method 1
a thermoelectric device configured to cool or heat an air flow exiting the air mover
Implementation Method 2
The air mover can be disposed outside of the internal cavity to provide an air flow towards the test compartment through the inlet aperture
Implementation Method 3
The thermoelectric device can be mounted to the cooling conduit, and the cooling conduit can be configured to absorb heat dissipated by the thermoelectric device
Data Source
AI summary
A method of controlling a temperature of a test slot in a disk drive testing system includes regulating temperature changes of a subject test slot based on one or more operating conditions of one or more other test slots neighboring the subject test slot.