• 문화기술의 융합
• /
• 제8권3호
• /
• pp.507-514
• /
• 2022

본 연구에서는 출산 경험이 있는 여성을 대상으로 젖병 세척기 사용 시 손목 회전 동작에서 나타나는 근활성도 및 세척 방법에 따른 세척 청결도, 사용성 평가를 비교 분석하고자 한다. 이를 위하여 자동 젖병 세척기와 수동 젖병 세척기 사용 시 전완근의 근활성도, 세척 청결도는 장비를 활용하여 정량 평가하였으며, 변인들의 효과 분석을 실시하여 다음과 같은 결론을 얻었다. 첫째, 근활성도는 자동 젖병 세척기가 수동 젖병 세척기를 사용할 때 보다 낮은 것으로 나타났다. 둘째, 청결도는 자동세척(정방향+역방향)시 세척력이 제일 우수한 것으로 판단되며, 그 다음으로 자동세척(정방향), 수동세척 순으로 나타났다. 셋째, 젖병 세척기 사용에 대한 사용성 평가는 자동 젖병 세척기가 수동 젖병 세척기에 비하여 높은 만족도를 보였다. 이러한 결론을 통해 자동 젖병세척기 사용에 대한 효과성을 입증함으로서 본 연구는 향후 제품 고도화의 기초자료로 활용할 수 있을 것으로 판단된다.

• Current Research on Agriculture and Life Sciences
• /
• 제32권3호
• /
• pp.165-169
• /
• 2014

계란 세척기 평가 금액 추정 결과는 다음과 같다. 계란 세척기 총수입(인건비 절감으로부터의 조수입 증대)에서 산정하였으며, 계란 세척기 총비용은 구입가격, 고정비용 및 유동비용의 합계로 나타내었다. 계란 세척기 평가액은 할인율 수준에 따라 최소 44,778천원(할인율 10%)에서 최대 45,778천원(할인율 5%), 평균 45,278천원으로 추정된다(Table 7). 계란세척기의 경제적 타당성을 살펴보면, 내부수익율 IRR의 값은 가정했던 할인율(5%~10%)보다 훨씬 높고, 순현재가치(NPV)는 0보다 훨씬 크며, B/C 비율도 1.0 이상으로 나타나 계란 세척기 개발사업의 경제적 타당성은 있는 것으로 판단된다(Table 8).

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2003년도 추계학술대회
• /
• pp.205-209
• /
• 2003

The condensation water temperature $(T_{CW})$ distributions on the combi-drum washer of condensation type which the cloth washes, rinses, spins and dry cloth over a heater were measured using the thermocouples. During the drying process, in order to find out the relationship between the $T_{CW}$ distribution and the cloth dryness level $(C_{D1})$, the experiment was made for the dehydration rate of the cloth $(C_{D0})$ is 63%, the weight of cloth $(W_{C0})$ from 1 to 6kg. In result, according to $W_{C0}$ and $C_{D0}$, the distributions of $T_{CW}$ are very different. Using this tendency, it was appropriate and it developed the automatic drying algorithm and it was gotten dryness level regardless of $W_{C0}$, $C_{D0}$ and the other factor.

• 대한기계학회논문집
• /
• 제18권9호
• /
• pp.2477-2485
• /
• 1994

Air damper has a great advantage that is independent of temperature change. This paper presents an analysis approach and an application for designing nonviscous air damper with a piston and a cylinder. The objective functions for optimum design is damping coefficient and is maximized by changing two design variables that are length between piston and cylinder and orifice diameter. A digital computer program was developed which determines optimal air damper configuration for maximum damping coefficients. The results were applied to the automatic washer and are confirmed to be valid for the range of operating conditions.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 1996년도 추계학술대회 논문집
• /
• pp.872-876
• /
• 1996

Most studies of rotary machinery design have been performed to establsih a new mechanism or a dramatic combination of machine elements for the power transmission. Although the rotary machine is worked very efficiently, that still has a major work to better performance which is the optimization of the selected mechanism for the mechanical efficiency, low vibration and noise, or customer interest. This work presents a practical approach used for washer's efficiency and machinery vibration and noise reduction along with a systematic procedure. Also for the confirming the study, a computer simulation program and a real working mock-up are developed and used to show very good agreement with the analytical result.

• 한국소음진동공학회논문집
• /
• 제21권8호
• /
• pp.726-732
• /
• 2011

Straight absorptive silencers have been designed to reduce the noise level of a centrifugal blower. Three-dimensional boundary element method is used for the design of absorptive silencers which consist of a perforated main pipe and a outer chamber filled with fibrous material. The experimental results show that the absorptive silencer reduces up to 8 dB(A) in the overall sound pressure level of the blower and up to 15 dB at the blade passing frequency. It is also found that the gap between the silencer and the impeller may substantially alter the acoustic performance of the silencers. The transmission loss predicted by the boundary element method follows overall trends of the measured insertion loss. The experiments also show that the impact of the silencers on the aerodynamic performance of the blower is minimum.

• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2018년도 춘계학술대회
• /
• pp.660-662
• /
• 2018

현대사회에서 나날이 늘어가고 있는 반려견 시장의 증가와 더불어 반려견을 키우는 사람들이 우리들의 삶에 깊숙이 자리 잡고 사회에 영향을 끼치고 있다. 이 추세를 따라 최근에 다양한 제품들이 나오고 있는데 아직 배변패드 자동세척 시스템이라는 기능적 측면으로 아직 많이 발달되어 있지 않은 것으로 생각된다. 일상생활에서 현대인들의 바쁜 사회생활로 인하여 시간, 비용, 환경적 측면으로 반려견들을 관리할 수 있는 여유가 없어서 문제로 발생되고 있다. 이러한 문제들을 방지하고자 아듀 이노와 적외선센서 모듈, 자동펌프 시스템을 개발하려고 한다. 그리고 이를 배변패드 자동세척기를 통해 사용자들에게 더욱 편의를 줄 수 있도록 설계하였다.

• 한국소음진동공학회:학술대회논문집
• /
• 한국소음진동공학회 2006년도 춘계학술대회논문집
• /
• pp.996-1001
• /
• 2006

Automatic washing machines have been improved and popularized steadily since the first electric washing machine was produced in the early 1900's. Appliance industry has tried to obtain the performance of washing machine with large capacity, high energy efficiency, low vibration and low noise levels. As the installation peace of a washer becomes closer to the living space, vibration and noise problems become more important challenges. In general, a washing machine has four legs to support its body. Four legs of the washing machine should be attached on a floor. If not so, it may cause severe vibration or walking in the spin-drying process. Unfortunately, the floor of an ordinary house is bumpy in general, and the consumers will not accept bolting washing machines to a foundation; moreover, sometimes they move the location of their washing machines to utility rooms or bath rooms or kitchens and don't care for leveling the legs exactly. In this study, we devise an auto-leg system that prevents the occurrence of abnormal vibration and walking of washing machines. It is simply composed of a spring and a friction damper. Some experiments are implemented to show the dynamic characteristics of the three-dimensional auto-legged washing machine model that is located on the even or uneven ground. A spring parameter is optimized to adjust the length of the auto-leg system automatically up to 10 mm irregularity, and the friction damper is designed to decrease a resonance induced by the spring of the auto-leg system. Some numerical results show that placing the proposed auto-leg system in a washing machine makes good performance with low vibration, as well as low noise, regardless of the unevenness of the floor.

• 대한기계학회논문집A
• /
• 제34권11호
• /
• pp.1779-1784
• /
• 2010

어업 분야에서 그물세척 작업은 엄청난 노동력과 작업시간을 요구하며 심한 환경 오염을 발생시킨다. 본 연구에서는 그물 양망 기능과 세척 기능, 그물펴짐 기능을 동시에 갖춘 그물세척용 양망기를 개발하였다. 양망회전체의 구조를 개선하여 구조물의 안정성을 높이고 대형 그물의 양망 중에 발생할 수 있는 그물 슬립 문제를 해결하였다. 양망기에 세척 기능을 부가하여 그물자동세척기를 이용한 최종 세척 전 단계에서 1 차 세척을 수행하거나 중소형 그물의 주 세척 작업에 세척용 양망기를 사용할 수 있도록 하였다. 대형 그물 세척을 위한 그물자동세척기의 세척 효율을 높이기 위하여 양망기 하단에 그물펴짐보조대를 설치함으로써 양망기로부터 접힌 채내려오는 그물을 펴는 작업이 용이하도록 양망기를 설계하였다. 시작품을 제작하여 그물 세척 실험을 수행한 결과, 양망 중에 그물슬립을 완벽히 방지할 수 있었고 양망기의 1 차 세척 기능에 의하여 그물 펴는 작업의 수월함을 확보함으로써 작업 효율과 세척 효율을 대폭 향상시킬 수 있었다.

• 대한가정학회지
• /
• 제34권5호
• /
• pp.283-292
• /
• 1996

This study examines the character of "Tencel" named as Ecology Fiber and investigates the fitness of it as the textile and the satisfaction in dress when its fastness is compared with that of Rayon classified into Celulose textile. Dye experiment selected 100% Tencel, Rayon for the samples, which were dyed into the direct dye and Turky Blue and Blue of the rective dye and were washed twelve times by the automatic washer. After that, the dye experiment examines the light, laundering, perspiration, rubbing and the composite fastness of the perspiration and hight in the lists of the dye fastness. The results are as follows: 1. The experiment of the color fastness, especially in T-blue of the direct dyestuff, requiring the twelve times-repeatedly-washing by the detergent says that the color fastness of Tencel is superior to that of the cellulose textile ; Rayon. 2. The experiment of the light fastness says that the fastness of Tencel is superior to that of Rayon. 3. The experiment of the laundering fastness says that all of Tencel, Rayon shows the excellent result in the direct dye than in the reactive dye. 4. The experiment of the rubbing fastness says that although Tencel, Rayon show the remarkable result in the desiccant experiment than in the humid one, the rubbing fastness of Tencel is superior to that of others. 5. The experiment of perspiration fastness says that Tencel, Rayon have the closely tightened tendency not to be altered through the acid and alkali perspirations. 6. The experiment of the composite fastness of perspiration and light indicates that the artifical perspirations, though the light lets the fastness of textiles weeken, do very slightly make them loosen, which does not offer the outstanding result. This whole result show that the fastness of Tencel is superior to that of Rayon. The Korean Fiber Enterprise in clothing should make the new and ecological fiber "Tencel" by means of the large amount of investment, and the technique of handing and controlling about it, considering that the dangerous needle of environmental pollution has been slackening the close-related ecological knots of the global environment. global environment.