• Journal of Biosystems Engineering
• /
• v.28 no.5
• /
• pp.421-428
• /
• 2003

This study was conducted to determine the optimum blade shape for peeling Altari radish. To figure out the required peeling force according to various angles of blade and rakes of peeling cutter, two peeling tests such as circumferential peeling and longitudinal peeling of Altari radish were carried out. Based on the pretest results, which performed to investigate the applicability of the optimum shape of cutter and to find out the cutting pattern according to the lapse of days after harvesting the radish, the peeling depth and width of the blade were fixed at 2 mm and 10 mm. From two methods of circumferential and longitudinal peeling test, the angles of rake and blade as cutter shape factors were affected on peeling force. But the peeling speed was not affected on it under the safety speed as 0.2 m/s, without blade vibrating on peeling operation. The rake angle was more effective factor than the blade angle, and the optimum angles of blade and rake were 10$^{\circ}$ and 55$^{\circ}$ respectively. The cutting surface by the longitudinal peeling was more smooth than that by the circumferential peeling. There was no problem in peeling work during 4 days after harvest because the freshness of the Altari radish was maintained.

• Journal of Biosystems Engineering
• /
• v.30 no.3 s.110
• /
• pp.166-171
• /
• 2005

A prototype peeling device with rotating cutter blades was designed to peel altari radish skin. With the designed blades, the maximum peeling depth increased as the cutter clearance increased but the effect of the peeling speed was not significant. The optimal operating conditions for peeling was; the peeling speed was at 0.19m/s when peeled 2.5 blades/sec and the maximum peeling depth was 1.5mm, the minimum peeling depth was 0.5mm, and the leaf rotating speed was 12 rpm, respectively. In the peeling test fur the optimum operation conditions, with a auxiliary rolling device could adjust the rotational speed of the root uniformly, the altari radishes under 70mm diameter were peeled perfectly.

• Journal of Biosystems Engineering
• /
• v.22 no.3
• /
• pp.289-294
• /
• 1997

The chestnut is a well-known and important forest product in Korea. The annual production of chestnut is about 100, 000tons and its cultivating area is 80, 000ha. However, the peeling process of outer and inner skins of chestnut is very difficult due to hardness and adhesiveness of chestnut skin. The peeling process of chestnut was operated by manual work and the performance of chestnut peeling machine is very low. The purpose of this study is to develope the prototype of new chestnut peeling system. The hardness of chestnuts was tested with six different drying conditions and its range was from 949$g/mm^2$ to 2, 149$g/mm^2$. The hardness of chestnuts was decresed gradually during the drying process. The chestnut peeling Process includes sorting, storage, drying, outer skin cutting, flame peeling, continuous frictional skin peeling, and inner skin cutting operation. The developed chestnut peeling system consists of outer skin cutter, flame peeler, continuous frictional skin peeler and inner skin cutter. The system can peel domestic chestnuts at 150$kg/hr$ with peeling rate of 78%.

• Journal of Biosystems Engineering
• /
• v.30 no.3 s.110
• /
• pp.161-165
• /
• 2005

In this study, peeling test of the Altari radish on kimchi pre-processing system for mechanization was performed with the longitudinal plane peeling type with wider cutting blade than that of the peeled chip's. To determine the optimum cutter shape to match this plane peeling type, the peeling tests depending on variable cutting speed, rake angle and blade angle using the blade with thickness as 2 m and width as 50mm were performed, and the patterns of the peeled chips and peeling resistances were investigated. As the result of the tests, the rake angle of the blade with clean peeled surface of the Altari radish was over $45^{\circ}$, and the blade angle and rake angle with the minimum peeling resistance was $20^{\circ}\;and\;60^{\circ}$, respectively. The optimum peeling conditions were; the peeling speed 0.2m/s, blade angle $20^{\circ}$ and the rake angle $60^{\circ}$, and the peeling resistance of each blade was 15 N.

• Proceedings of the Korean Society for Agricultural Machinery Conference
• /
• v.10 no.1
• /
• pp.236-239
• /
• 2005

• Proceedings of the Korean Society for Agricultural Machinery Conference
• /
• 2003.02a
• /
• pp.303-308
• /
• 2003

김치는 우리나라 사람 누구나 즐겨 먹는 전통 음식이며, 세계적으로 널리 알려져 있는 우리 고유의 음식 중에 하나이다 우리나라에서 한해 생산되는 무는 1,759,357톤에 이르며(농림부, 2001), 한해 김치 생산량은 155만 톤으로 이중 김치가공공장 생산이 50만톤(33%)으로 그 비중이 매년 상승하는 추세이다. 또한 2001년 김치수출은 23,785톤으로 전년대비 1.5% 증가한 것으로 나타났다(김, 2002), 우리나라에서는 약 60여 개의 김치 가공공장에서 생산되는 알타리무김치의 비중은 약 8.5%로 이를 전체 무 생산량에 적용하면 알타리 김치는 한해 약 42,500톤이 생산되는 것으로 추정되며, 김치 가공을 대부분 인력에 의지하고 있다(민 등, 2001). (중략)