Successful Simulation of Airflow in the Microenvironment of an Assembly Automation Machine and its Implication

Author:

Thongsri Jatuporn1,Khaokom Adisorn1

Affiliation:

1. King Mongkut’s Institute of Technology Ladkrabang

Abstract

Today, the hard disk drive (HDD) industry is using assembly automation machine (AAM) to construct head stack assembly (HSA) from smaller parts. AAM needs to operate in a clean environment with very low particle counts. To achieve this end, fan filter Unit (FFU) is used to supply purified air into the environment by filtering out airborne particles from recirculating air. In this study, we investigated numerically the airflow induced by FFUs inside a microenvironment that houses an AAM in an HDD factory. The boundary conditions chosen for simulation were directly derived from the real ambient conditions in this HDD factory. We found that the FFUs not only filter out airborne particles from the air supplied into the microenvironment but also act as a particle blocker, pushing away the nearby particles in the air surrounding the openings of the microenvironment. The findings from this study can be applied to cases where other kinds of machinery need to be protected from airborne particles.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

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