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공기청정기 홀 패턴디자인을 위한 파라메트릭 디자인 활용
박가영,정성원 한국기초조형학회 2021 기초조형학연구 Vol.22 No.6
CMF(color, material, finish)는 제품을 사용하는 사용자의 감성을 최종적으로 만족시키는 중요한 디자인 요소로 활용되고 있는데, CMF의 구성 요소 중 하나인 표면 질감은 표면에 형성된 패턴에 의해많은 영향을 받게 된다. 제품의 표면 패턴 중에서 홀(Hole) 패턴은 물리적으로 구현된 구멍들로 구성되며 홀 패턴을 형성하는 규칙이 단순하고 패턴의 형태가 단조로운 경우가 많다. 따라서 제품 표면 디자인의 차별화를 위해서 다양한 홀패턴을 디자인할 수 있는 효과적인 방법에 대한 연구가 필요하다. 본 연구의 목적은 다양한 홀 패턴 디자인을 위한 파라메트릭 디자인 응용 방법을 생성하고 그 사례를도출하여 효율적인 홀 패턴 디자인 방법을 제시하는데 있다. 이를 위하여, 홀 패턴이 제품의 디자인이미지에 비교적 큰 영향을 미치는 공기청정기를 대상으로 통기구의 패턴을 디자인하는 과정과 파라메트릭 디자인을 응용하는 방법을 제시하고 그 가능성과 효용성을 확인하였다. 연구 결과, 현재의 공기청정기에서 보이는 홀 패턴 이미지는 총 8개의 그룹으로 구분할 수 있었으며 이들은 파라메트릭 디자인 툴을 이용하여 평면적 패턴 이미지를 생성하는 알고리즘으로 구현되었다. 평면적 패턴 이미지는다시 3차원 입체를 형성하는 다른 알고리즘에 의해 입체적인 통기구 형상으로 변환되었으며 이러한과정에 의해 몇 가지의 홀 패턴 디자인 결과물이 도출되었다. 본 연구에서 도출된 2차원 평면 패턴디자인 알고리즘과 3차원 입체 디자인 알고리즘은 제품 표면의 패턴을 디자인하는 디자이너들이 기존의단순 복사와 배열에 보내는 작업 시간을 단축하고 보다 창의적이고 다양한 홀 패턴을 쉽고 빠르게 디자인하게 할 것으로 기대한다. 또한 이러한 알고리즘은 공기청정기에 사용되는 것을 전제로 개발되었으나, 홀 패턴이 적용된 다양한 제품에도 응용할 수 있을 것으로 예상한다. CMF (color, material, finish) is used as an important design element that satisfies the user’s sensibility. One of the components of CMF is the surface texture, which is mainly affected by the pattern formed on the surface. Among the surface patterns of products, the hole pattern consists of physically implemented holes that mainly characterize for having simple rules for forming the hole pattern and its pattern form is often monotonous. Therefore, it is necessary to study an effective method to design various hole patterns in order to differentiate the products’ surface design. The purpose of this study is to present an efficient method for hole pattern design and to create a parametric design application for various hole pattern design cases. To this end, the process of designing the hole pattern of a ventilation hole and the method of applying the parametric design to the air purifier, where the hole pattern has a relatively large influence on the product image, was presented and the possibility and effectiveness of the design were examined. As a result of the study, the hole pattern images seen in the current air purifier could be categorized into a total of eight groups, and these were embodied as an algorithm that creates a planar pattern image using a parametric design tool. The planar pattern image is again converted into a three-dimensional vent shape by another algorithm that forms a three-dimensional solid. Several hole pattern design results were derived through this process. The two pattern design algorithms derived from this study not just reduce the time and effort spent by designers designing patterns on the product surface by simply copying and arranging, but also allow the designers to design more creative and diverse hole patterns in an easier and faster way. In addition, although this algorithm was developed on the scope that it is used in air purifiers, it is expected that it can also be applied to a variety of products to which the hole pattern is applied.
태양열 공기가열기의 흡열판 홀 배치와 형상에 따른 열적 성능에 관한 수치해석적 연구
신재혁(Shin, Jae Hyuk),부준홍(Boo, Joon Hong) 한국태양에너지학회 2015 한국태양에너지학회 논문집 Vol.35 No.1
A series of numerical analyses was conducted to predicted to predict the thermal performance of a solar air heater depending on the hole configuration and geometry in the absorber plate. The planar dimensions of the prototype were 1 m (W) by 1.6 m (H), and the maximum air flow considered was 187 ㎥/h. It was considered that protruding holes with a triangular opening in the absorber plate would invoke turbulence in the air flow to enhance the convection heat transfer. Six different hole configurations were investigated and compared with each other, while the hole opening height was considered as a design variable. Three-dimensional transient analyses were performed with a commercial software package on the airflow and heat transfer in the model. The numerical results were analyzed and compared from the view point of the outlet air temperature and its time response to derive the optimal hole pattern and hole opening height.
황세준(Sejoon Hwang),박원규(Warngyu Park) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
While stamping process, air may be trapped between die and blank and it builds up high pressure. This induces the imperfections on the blank surface and makes extreme high tonnage of punch required to reach home position. To prevent these problems, the air ventilation holes are drilled through the die. But, most of die makers drill air ventilation holes excessively on trial and error basis. The present work has developed a simplified mathematical formulation for computing the pressure of air pocket at given cross-sectional area of air ventilation holes and the pressure of air pocket was compared to commercial CFD code and experiments. The pressure was well agreed with the result of CFD code and experiments. The present work could also calculate the optimum cross-sectional area of the air ventilation hole not to exceed the prescribed maximum pressure of air pocket by using the Bisection method.
비접촉식 그리퍼 적용을 위한 공기압 파지식 헤드 내부 관통로 고찰
김준현(Joon Hyun Kim) 한국생산제조학회 2012 한국생산제조학회지 Vol.21 No.4
In the semiconductor and display device production processes, the handling of sensitive objects needs new carrying technology. Floating carrying motion is a practical alternative solution for non-contact handling of parts and substrates. This paper presents a study of through paths inside the air pressure pick-up head to generate the floating motion. The air motion by conceptual designed paths inside the head gradually develops positive pressure and vacuum between narrow objects. Positive pressure occurs through the head tip before discharging outside of the head. Negative pressure is developed by evacuating the inside head bottom as result of the radial flow connecting the vertical through-holes. The numerical analysis was done to figure out the stable levitation caused by the two acting forces between surfaces. In comparing with the standard case that the levitation gap gets 0.7-0.9 mm, it confirms the suggested head characteristics to show floating capacity in accordance with the head size, number of through-hole, and locations of through-hole in succession of conceptual design for a prototype.