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    • 8. 发明公开
    • 압축장치
    • 高压压缩机的压缩装置
    • KR1020010030035A
    • 2001-04-16
    • KR1020000043822
    • 2000-07-28
    • 산요덴키가부시키가이샤
    • 사카모토야스오니시카와히로시아이다마코토니시카와다카히로사토가즈야미즈노다카유키사토아리토모
    • F04B39/00
    • F04B39/0005F04B25/00F04B25/02F04B27/02F04B27/053F04B27/0878F05C2225/04F05C2253/12Y10T74/18256
    • PURPOSE: To prevent the inner surfaces of a cylinder from being worn by forming a plurality of labyrinth grooves in the peripheral surface of a piston and chamfering the corners of the opening end parts of the labyrinth grooves. CONSTITUTION: A plurality of labyrinth grooves 70 are formed in the peripheral surfaces of a piston 53 (54), and the area of the piston from the acting inner surfaces of a cylinder 73 (74), i.e., from liner cylinder 73A (74A) is formed in a lubrication-less labyrinth seal structure, and the tip peripheral edge parts 75 of the piston 53 (54) and the opening end parts of the labyrinth grooves 70 are chamfered. Thus, even if the piston 53 (54) is displaced downward by an amount of clearance between the piston 53 (54) and a liner cylinder 73A (74A) by its own weight so as to contact the inner surface of the liner cylinder 73A (74A), the inner surface of the liner cylinder 73A (74A) is prevented from being worn by the tip peripheral edge part 75 of the piston 53 (54) and the opening end part 76 of the labyrinth grooves (70).
    • 目的:通过在活塞的周面上形成多个迷宫槽,并使迷宫槽的开口端部的角部倒角,以防止气缸的内表面磨损。 构成:在活塞53(54)的周面上形成有多个迷宫式凹槽70,并且活塞从气缸73(74)的作用内表面(即从衬套气缸73A(74A))的作用内表面的面积, 形成为无润滑迷宫式密封结构,活塞53(54)的前端周缘部75和迷宫槽70的开口端部被倒角。 因此,即使活塞53(54)通过其自身的重量向下移动活塞53(54)和衬套筒73A(74A)之间的间隙,从而与衬套筒73A的内表面 如图74A所示,衬套筒73A(74A)的内表面被活塞53(54)的前端周缘部75和迷宫槽70的开口端部76磨损。