• Title/Summary/Keyword: Washing System

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Dynamic Modeling of Washing System with Elastic Motion (탄성 운동을 고려한 세탁기 시스템의 동력학 모델링)

  • 오혁진;이우식
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2003.10a
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    • pp.47-54
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    • 2003
  • The rotating of rotatory unit with its structural unbalance mass and laundry is making the main vibration problem in a vertical axis washing machine. For reducing vibration problem total washing system hung on the case by its suspension system which is constitute of spring, damper and suspension bar and hydraulic balancer is attached at the upper rim of spin basket. In this paper, we make the dynamic model of washing system of its rigid body motions by 6 degree of freedoms. Hydraulic balancer is modeled by one degree of freedom like auto ball balancer. Elastic motions of washing system have found by method of analytic, experimental and FEM. And we consider first bending mode of each suspension bar and first circumferential mode of assy tub. So, the total washing system is modeled by 12 degree of freedoms. Equations of motion for total washing system have derived, and we perform the dynamic simulation tests.

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On the Change of Fabric Mechanical properties in Ultrasonic Fabric Washing System (호부직물의 초음파 수세에 의한 역학적 특성의 변화)

  • Lee, Choon-Gil;Park, Sung-Diuk;Oh, Bong-Hyo
    • Textile Coloration and Finishing
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    • v.9 no.4
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    • pp.28-38
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    • 1997
  • Peach skin fabrics were washed by the general and ultrasonic washing systems using different conditions. The physical properties of the washed fabrics were estimated. The following results were obtained through experimental data and their analysis. The tensile properties were changed due to fabric running speed and washing methods. The lower the running speed, the higher the extensibility and resilience and the lower the linearity and tensile energy. In the general washing method, the extensibility and resilience had lower values than those of the ultrasonic washing method and the linearity and tensile energy had the higher values than those of the ultrasonic washing system. The bending properties, bending moment and histeresis, were estimated. These values were generally lower in the ultrasonic washing system than those of the general washing system. The faster the washing speed, the higher the value of hysterisis. The shear properties were affected by the fabric running speed and washing methods. Shear stiffness and hysteresis of shear forces increased according to the increase of the fabric running speed. The values were higher in the general washing system than those of the ultrasonic washing system. The compressional energy was affected by the fabric running speed. The higher the fabric speed the higher the compressional energy. The ultrasonic washing system had lower compressional energy than the general washing system. The higher the running speed, the lower the coefficient of friction and geometrical roughness. The values of geometrical roughness were infienced by the removal of the sizing agent. The higher the remaining sizing agent, the higher the fabric weight and the thicker the thickness of fabric.

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Study on Process Development of Ginseng's Surface Washing System (인삼의 표면 세척시스템을 개발을 위한 공정처리기술에 관한 연구)

  • Lee, Hyun-Seok;Kwon, Ki-Hyun;Jeong, Jin-Woong;Choi, Chang-Hyun;Han, Jae-Woong
    • Journal of Biosystems Engineering
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    • v.34 no.4
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    • pp.234-242
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    • 2009
  • This study was attempted to develop surface washing-system of ginseng. The effect of sterilization, washing and keeping freshness of ginseng through analyzing unit process were examined to establish optimal condition for washing system. Surface washing method of fresh ginseng used two way and full cone spray type. Sterilization was used at $2^{\circ}C$ water with electrolysis water of 50 and 80 ppm. Ginseng was sterilized with electrolysis water during 30 and 60 s, dehydrated during 1 min and dried during 1min at 30 and $50^{\circ}C$. Hardness of surface-washed ginseng showed good result on 1 min spraying time with 80 ppm electrolysis water at $10^{\circ}C$ storage. Ginseng with 80 ppm electrolysis water was sterilized better with $1.05{\times}103$. There are no changes with 0% on appearance quality at 80 ppm electrolysis.

Characteristics Evaluation and Development of Peach Washing System (복숭아의 세척시스템 개발 및 특성 평가)

  • Lee, Hyun-Seok;Kwon, Ki-Hyun;Jeong, Jin-Woong;Kim, Byeong-Sam;Cha, Hwan-Soo
    • Journal of Biosystems Engineering
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    • v.34 no.6
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    • pp.446-453
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    • 2009
  • This study was conducted to find condition of improving the quality of peach by using surfacing washing system. The rate of weight loss of A,B groups were showed slower decreasing trend than CT group and the value of soluble solid degree was not different significantly among all groups from the results of stored peach treat with surface washing system of peach in the first experiment. The colory value of surface were increased with increasing storage period in all treatments. Browning pace of A,B groups were slower than control. Emission of carbon dioxide was increased from the results of respiration rate, 6-10 mL/kg/hr $(10^{\circ}C)$ and 32-41 mL/kg/hr $(25^{\circ}C)$. In second experiment with surface washing system of peach, the value of soluble solid was showed with similar value from 10 $Brix^{\circ}$ to 13 $Brix^{\circ}$. The pace of soft rot of EW groups were lower than CT groups from the results of hardness during storage period. The results of colory value was not showed with significant difference in $15^{\circ}C$ and $20^{\circ}C$ storage temperature but changed to browning in EW groups. The moisture contents was from 85% to 90% in all groups. And the count of total microorganism of EW groups were lower than control. Also total coliform of EW groups were negative. In sensory evaluation, washing peach was showed higher value with significant difference in all acceptability.

Vibration Analysis of a Pulsator type Washing System (펄세이터형 세탁 시스템의 진동 해석)

  • 이신영;강주석;윤중락;이장무;윤구영;김남권
    • Journal of KSNVE
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    • v.7 no.2
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    • pp.261-272
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    • 1997
  • Recently washing machines are to be in lower vibration and lower sound because of better environment. Vibration problems in washing machines occur in both washing mode and spinning mode, but vibration in spinning mode becomes main problem because of its high rotating speed and continuity. Vibration while spinning is mainly due to rigid body motion of total washing system which includes suspending rods, washing bath, spinning bath, and gear sets. In this study, some researches were done in order to analyze the rigid body motion of washing system and flexible vibration of spinning bath. A basic mathematical model was established, and the effect of position of salt water and shape change of salt water case were considered. And the effect of lengths of suspending rods, attaching angles, vertical and horizontal position, stiffness of spring on the change of vibration were also considered. To identify the effect of salt water on vibration, some measurements were done. When salt water was positioned at upper part, the effect was most and this coincides with the tendency of simulation.

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Development of Washing System for Improving Microbiological Quality of Blueberry after Postharvest (수확 후 블루베리의 미생물학적 품질향상을 위한 세척시스템 개발)

  • Chun, Ho Hyun;Park, Seok Ho;Choi, Seung Ryul;Song, Kyung Bin;Park, Seung Jong;Lee, Sun Ho
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.42 no.11
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    • pp.1886-1891
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    • 2013
  • To inactivate the microorganisms on the surface of blueberries after harvest and to secure microbial safety, a bubble-aqueous chlorine dioxide washing system was developed. After treating the freshly prepared blueberries with the bubble-aqueous chlorine dioxide washing system, the changes in the microbial populations and quality of the blueberries were determined during storage $4{\pm}1^{\circ}C$. Microbiological data indicated that the populations of total aerobic bacteria, yeast and mold decreased by 1.4 and 1.3 log CFU/g at the treatment of 20 ppm aqueous chlorine dioxide with the system, respectively. There was no significant difference in color change and weight loss during storage among treatments. In addition, this washing system could handle approximately 60 kg of blueberry per hour, resulting in labor-saving. Therefore, these results clearly suggest that the bubble-aqueous chlorine dioxide washing system could be useful in improving the microbiological safety of fresh blueberries after harvest.

Development of a Ginseng Surface Washing System (인삼 표면세척 시스템 개발)

  • Lee, Hyun-Seok;Jeong, Jin-Woong;Kim, Byeong-Sam;Kwon, Ki-Hyun
    • Korean Journal of Food Preservation
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    • v.16 no.4
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    • pp.541-548
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    • 2009
  • We developed a surface washing system for ginseng. The washing system was developed using different treatments and conditions and characterized in terms of product hardness, weight loss, and change in temperature and color. Optimal results were obtained using a surface washing system involving a washing conveyor speed of 1.0 L/min, a water pressure of $35\;kg/cm^2$, a washing nozzle angle of $40^{\circ}$, a washing height of 5 cm, a 1-sec reciprocating washing nozzle cycle, a dehydration wind velocity of 30 m/sec, and an internal drying temperature of $30-33^{\circ}C$. A surface washing system using a washing conveyor speed of0.8 L/min, a water pressure of $40\;kg/cm^2$, a washing nozzle angle of $40^{\circ}$, a washing height of 3 cm, a 1-sec reciprocating washing nozzle cycle, a dehydration wind velocity of 30 m/sec, and an internal drying temperature of $30-33^{\circ}C$ resulted in ginseng that was stained yellow.

The Dry Cleaning Machine to Recycling the used Ballast as a Aggregate of the Paved Track (포장궤도 골재로서의 도상자갈 재활용을 위한 건식세척장치)

  • Lee, Il-Wha;Lim, Jong-Il;Lee, Soon-Gu
    • Proceedings of the KSR Conference
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    • 2009.05a
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    • pp.1525-1529
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    • 2009
  • Washed ballast is used on paved track to earn the high quality track performance. But, the water washing system caused the several environment problems such as the noise, dust and water pollution. Even if the washing is performed, it is difficult to earn the high quality because of the low efficiency of the water washing system. So, we developed the dry cleaning type machine to solve these problems. This machine excludes using the water completely. Especially, it is possible to organize on the conventional ballast cleaning train set.

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