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平面水噴流による円筒形物の削皮技術 Peeling Technology for Circular Objects with Plain Water Jets 門, 久義 KADO, Hisayoshi 松村, 博久 MATSUMURA, Hirohisa open access Recently, water jet technology has been used for jet cutting. The discharge pressures of these nozzles extend from 100MPa to 400MPa, and in extreme cases, to 1000MPa. The merits of this technology are to get the minimum power required, and the highly dense energy for cutting using small jet diameters. But, it is hard for this technology to peel wide skins of relatively soft objects. In this report, plain water jet technology with low pressure, below 3MPa, is investigated for peeling the skin of circular objects, such as vegetables. Eight flat nozzles 45 degrees apart are installed in a concentric circle. The axes of nozzles intersect at the center of the circle, and the plain water jets are on the same plane. A test cylinder is set among the nozzles, in order to measure static pressure on its surface. First, a suitable relation between the test cylinder diameter and the nozzle distance is examined experimentally. Next, a burdock is set instead of a test cylinder, pulled up with constant velocity and peeled by plain water jets. It is apparent that for proper peeling, there are appropriate combinations of the pull-up velocity and the discharge pressure. Lastly, the required power for peeling a burdock is estimated. 鹿児島大学 Kagoshima University 1995-09 jpn departmental bulletin paper VoR http://hdl.handle.net/10232/12361 https://ir.kagoshima-u.ac.jp/records/12715 0451212X AN00040363 鹿児島大学工学部研究報告 The research reports of the Faculty of Engineering, Kagoshima University 37 19 25 https://ir.kagoshima-u.ac.jp/record/12715/files/AN00040363_v37_p19-25.pdf application/pdf 763.7 kB 2016-10-31 1995-09