Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Study on the Thermal Deformation of the Air-conditioner Indoor Unit Assembly Using 3D Measurement and Finite Element Analysis

에어컨 실내기 사출 조립품의 열 변형 3D측정과 유한요소해석

  • Hong, Seokmoo (Department of Metalmold Design Engineering, Kongju National University) ;
  • Hwang, Jihoon (Samsung Electronics Co. Ltd., Global Technology Center) ;
  • Kim, Cheulgon (Samsung Electronics Co. Ltd., Global Technology Center) ;
  • Eom, Seong-uk (Samsung Electronics Co. Ltd., Global Technology Center)
  • Received : 2014.10.06
  • Accepted : 2015.01.20
  • Published : 2015.04.15
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Abstract

Thermal deformation, such as bending and twisting, occurs among the polymer parts of air-conditioner indoor units because of repetitive temperature change during heating operation. In this study, a numerical method employing finite-element analysis to efficiently simulate the thermal deformation of an assembly is proposed. Firstly, the displacement of an actual assembly produced by thermal deformation was measured using a 3D optical measurement system. The measurement results indicated a general downward sag of the assembly, and the maximum displacement value was approximately 1 mm. The temperature distribution was measured using a thermographic camera, and the results were used as initial-temperature boundary conditions to perform temperature-displacement analysis. The simulation results agreed well with the measured data. To reduce the thermal deformation, the stiffness increased 100%. As the results, the maximum displacement decreased by approximately 5.4% and the twisting deformation of the holder improved significantly.

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References

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