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    • 93. 发明专利
    • SLIDING BEARING FOR ROTARY SHAFT
    • JPH01279112A
    • 1989-11-09
    • JP10905188
    • 1988-05-06
    • MITSUBISHI HEAVY IND LTD
    • TAKESHITA KOJIYOSHIDA ZENICHITANIGUCHI SUSUMU
    • F16C17/02F16C17/03
    • PURPOSE:To make rigidity small for preventing whirling force from generating by providing two rows of plural numbers of holes on leaving a space in axial direction on a thin thick cylindrical member, connecting holes on both rows of holes together with slits in axial direction and forming pad portions between neighboring slits. CONSTITUTION:Two rows of hole lines composed of plural number of holes 3 in circumferential direction are provided on thin thickness of a cylindrical member 1, and slits 4 are provided in connecting together holes 3 in both hole lines. Places between neighboring slits 4 are made in pad portions 2. The pad portions 2, according thereto, can be tilted or oscillated in a minute range, and can be followed to such as vibration of a rotary shaft. On account of that the pad portions 2 are in thin thickness, inertia force is very small and rigidity also is made in small. Oil film reaction force between the pad portions and the rotary shaft, therefore, can be made to always face to the axial center even if the pad portions 2 are tilted or oscillated against the surface of the rotary shaft, thereby generation of whirling force to the rotary shaft is prevented.
    • 97. 发明专利
    • CLOSED COMPRESSOR
    • JPS57206793A
    • 1982-12-18
    • JP9097481
    • 1981-06-15
    • MITSUBISHI HEAVY IND LTD
    • TAKESHITA KOUJIOZAWA YUTAKAYOSHIDA ZENICHINOMURA TERUOOOTA MASARU
    • F04C29/04F25B31/00
    • PURPOSE:To obtain a cooling effect with a simple construction by providing a natural convection cooling circuit which introduces a refrigerant gas from a housing cooling chamber, condenses it by cooling with a heat exchanger, then returns it into a refrigerant liquid of the housing cooling chamber. CONSTITUTION:A refrigerant gas 24 accumlated at the upper section of a cooling chamber 30 is connected to a heat exchanger 22 thrrough an extracting pipe 19 and a pipe line 21, and it is cooled by the heat exchanger 22, and when liquefied, the refrigerant flows into a return pipe 20 through a pipe line 23 by its own weight. During this time, the refrigerant is liquefied by the heat exchanger 22, therefore, the pressure of the refrigerant is lowered to a saturation pressure at the temperature of the heat exchanger 22, and the refrigerant gas flows in through the extracting pipe 19 and the pipe line 21. Thereby, the heat can be absorbed in the cooling chamber and discharged in the heat exchanger 22 by means of natural circulation of the refrigerant. Moreover, the cooling chamber 30 is built in a double-bottomed structure at the bottom section of the housing 4, and a cooling effect can be obtained with the simplest construction.
    • 98. 发明专利
    • SCREW TYPE COMPRESSOR
    • JPS572492A
    • 1982-01-07
    • JP7439280
    • 1980-06-04
    • MITSUBISHI HEAVY IND LTD
    • IIDA SEIICHITAKESHITA KOUJIOZAWA YUTAKAYOSHIDA ZENICHI
    • F04C18/16
    • PURPOSE:To improve operation efficiency by communicating one of the two chambers devided at a piston of a floating casing that can move longitudinally to a suction chamber and the other chamber to a high pressure chamber on the discharge side and approaching operation pressure ratio to the optimum value. CONSTITUTION:A floating casing 16 is installed so that is may move longitudinally. The casing 16 forms a piston member 19 on the end. One 22 of the two chambers devided at the piston member 19 is communicated to a suction chamber 23. The other chamber 21 is communicated to an outlet high pressure chamber 15. With this construction, the operating pressure ratio is increased and the differential pressure between the two chambers 22 and 21 at the piston member 19 is also increased and then the piston member 19 moves to the leftside along the axial direction inside a cylinder 6 and moves the position of suction cut off to the left side, thereby reduces a suction capacity. When the case is reverse, the capacity opposite to the above can operate. The operating pressure ratio for a compressor is always brought near to the optimum value. The amount of suction is increased and decreased responding to consumption power. Therefore, the compressor can be always operated effectively.
    • 100. 发明专利
    • Centrifugal pump
    • 离心泵
    • JP2007056687A
    • 2007-03-08
    • JP2005239756
    • 2005-08-22
    • Hiroshi KamiyoshiMitsubishi Heavy Ind Ltd三菱重工業株式会社博 神吉
    • MITSUTA KIMIHIKOOSADA TOSHIYUKIYAMAMOTO YASUHARUKAKIUCHI YOHEISANO TAKASHIYAMASHITA KATSUYAYOSHIDA ZENICHIKAMIYOSHI HIROSHI
    • F04D29/046F04D15/00
    • PROBLEM TO BE SOLVED: To provide a centrifugal pump in which unpredicted vibration generated in the axial direction of a spindle is effectively reduced.
      SOLUTION: A thrust collar 20 fixed to the spindle 2 as a thrust bearing mechanism is held in a rear side bearing box 15 formed integrally with a casing. A thrust bearing 21 held by a carrier ring 22 finely movably in the axial direction is disposed in the bearing box 15. A ring 22 is biased by a disc spring 24 between a disk-like liner 23 fixed thereto and an annular member 25 fixed to the bearing box 15. The disc spring 24 is stored in a space 40 formed by the inner surface of the liner 23, the inner surface of the tubular member 25, the outer peripheral surface of a second tubular projected part 25a, and the inner peripheral surface of a third tubular projected part 25b. The internal volume of the space 40 is changed due to the fine movement by the axial vibration of the spindle 2. A passage formed of a first fine clearance 41 between the inner peripheral surface of a first tubular projected part 23a and the outer peripheral surface of a third tubular projected part 25b communicates with the space 40 and is filled with a lubricating oil.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种离心泵,其中有效地减少了在主轴的轴向上产生的不可预测的振动。 解决方案:作为推力轴承机构固定在主轴2上的止推环20被保持在与壳体一体形成的后侧轴承箱15中。 由承载环22在轴向方向上可移动地保持的止推轴承21设置在轴承箱15中。环22通过碟形弹簧24偏置在固定于其上的盘状衬垫23和固定到 圆盘弹簧24储存在由衬套23的内表面,管状构件25的内表面,第二管状突出部25a的外周面和内周面形成的空间40中 第三管状突出部25b的表面。 空间40的内部体积由于主轴2的轴向振动的细微移动而变化。在第一筒状突起部23a的内周面与第一筒状突出部23a的内周面之间的第一细间隙41形成的通路与 第三管状突出部25b与空间40连通并填充有润滑油。 版权所有(C)2007,JPO&INPIT