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    • 5. 发明专利
    • Pump, and heat pump device
    • 泵和热泵装置
    • JP2012172565A
    • 2012-09-10
    • JP2011034185
    • 2011-02-21
    • Mitsubishi Electric Corp三菱電機株式会社
    • MATSUNAGA NORIAKIASO HIROKI
    • F04D29/042F04D13/06F04D15/00F04D29/041F04D29/046
    • F04D13/0606F04D29/043F04D29/047
    • PROBLEM TO BE SOLVED: To improve pump efficiency by lengthening effective lengths of blades of an impeller, and attract a bearing by magnetic attractive force to prevent reflux from suction to discharge.SOLUTION: In a pump 110, a liquid sucking direction X and a liquid discharging direction Y bisect nearly at right angles. The pump 110 includes: a shaft 27; a disk shaped impeller 25 rotating around the shaft 27 and having a plurality of blades 25c radially formed from a disk shaped central region when viewed from the sucking direction X, wherein the plurality of the blades 25c are arranged at approximately the same height as that of an outlet 23; a bearing 18-1 which is arranged at a central region of the impeller 25 and includes a through hole 18-1c acting as a guide portion for guiding the liquid sucked from an intake 22 to the outlet 23; and a ring-shaped magnet 201. The bearing 18-1 is formed from a substance in which at least a cylindrical portion 18-1a contains a magnetic material. The magnetic force of the magnet 201 is controlled by a controller 202 to attract the bearing 18-1 in an anti-X direction.
    • 要解决的问题:通过延长叶轮的叶片的有效长度来提高泵的效率,并通过磁吸引力吸引轴承,以防止从抽吸到排出的回流。 解决方案:在泵110中,液体吸入方向X和液体排出方向Y几乎成直角地平分。 泵110包括:轴27; 围绕轴27旋转并且具有从吸盘方向X观察时从盘形中心区域径向形成的多个叶片25c的盘形叶轮25,其中,多个叶片25c布置成与 出口23; 轴承18-1布置在叶轮25的中心区域处,并且包括用作将从进气口22吸入的液体引导到出口23的引导部分的通孔18-1c; 和环形磁体201.轴承18-1由至少圆柱形部分18-1a包含磁性材料的物质形成。 磁体201的磁力由控制器202控制,以使轴承18-1以反X方向吸引。 版权所有(C)2012,JPO&INPIT
    • 6. 发明专利
    • Horizontal double suction pump
    • 水平双吸泵
    • JP2011220291A
    • 2011-11-04
    • JP2010093011
    • 2010-04-14
    • Torishima Pump Mfg Co Ltd株式会社酉島製作所
    • KANEMORI YUJI
    • F04D29/041F04D29/047F16C32/06
    • PROBLEM TO BE SOLVED: To provide a method of effectively suppressing a dynamic thrust load that acts on a main shaft in a low flow region including the neighborhood of a cut-off point in a horizontal double suction pump configured to support a radial load by a hydrostatic bearing.SOLUTION: The radial load of a main shaft 2 of a horizontal double suction pump 1 is supported by hydrostatic bearings 8 and 9. Pressure water discharged from a discharge port 21 of an impeller 3 is supplied to rear hydrostatic bearings 8 and 9. The static pressure of pressure water that has passed the hydrostatic bearing 8 acts on a surface on the driving side of a main shaft 3 of a pressure receiving disk 43 mounted on the main shaft 3. Hydrostatic pressure on the side of a suction port 20A of the impeller 3 acts on the face of the anti-driving side of the main shaft 2 of the pressure receiving disk 43.
    • 要解决的问题:提供一种有效地抑制作用在主轴上的动态推力载荷的方法,所述动力推力载荷包括构造成支撑径向的水平双抽吸泵中包括截止点附近的低流动区域 由静压轴承负载。 解决方案:水平双吸泵1的主轴2的径向载荷由静液压轴承8和9支撑。从叶轮3的排出口21排出的压力水被供给到后静压轴承8和9 通过静压轴承8的压力水的静压作用在安装在主轴3上的受压盘43的主轴3的驱动侧的表面上。吸入口20A一侧的静水压力 叶轮3作用在受压盘43的主轴2的反驱动侧的面上。(C)2012年,JPO&INPIT
    • 9. 发明专利
    • Pump device
    • 泵装置
    • JP2009236063A
    • 2009-10-15
    • JP2008085202
    • 2008-03-28
    • Nidec Sankyo Corp日本電産サンキョー株式会社
    • MURAMATSU KENJIOZAWA TAKESHIYOKOZAWA MITSUO
    • F04D5/00F04D29/041F04D29/046F04D29/051
    • PROBLEM TO BE SOLVED: To provide a pump device having the high efficiency of a motor portion, reducing a sliding loss significantly, and obtaining stable operational characteristics even if used in either of upper and lower directions.
      SOLUTION: In the pump device 1 of a peripheral pump structure, when a rotor 50 with a vane rotates at a rated number of rotations, the rotor 50 with the vane receives air pressure in both the thrust directions, and a rotating shaft 3 rotates at a position where the air pressure of those become equal. In such a rated rotation state, a magnetic center C1 in the thrust direction of a rotor magnet 42 and a magnetic center C2 in the thrust direction of a stator 60 are configured to be at the same position in the thrust direction. The rotating shaft 3 is in a non-contacting state with both of a first thrust bearing part 11 and a second thrust bearing part 12.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供具有高效率的马达部分的泵装置,显着降低滑动损失,并且即使在上下方向上使用也能获得稳定的操作特性。 解决方案:在周边泵结构的泵装置1中,当具有叶片的转子50以额定转速旋转时,具有叶片的转子50在两个推力方向上接收空气压力,并且旋转轴 3在这些空气压力相等的位置旋转。 在这样的额定旋转状态下,转子磁体42的推力方向的磁性中心C1和定子60的推力方向的磁性中心C2构成为在推力方向上处于同一位置。 旋转轴3与第一止推轴承部件11和第二止推轴承部件12处于非接触状态。版权所有(C)2010,JPO&INPIT
    • 10. 发明专利
    • Mixed flow pump
    • 混合流量泵
    • JP2007321717A
    • 2007-12-13
    • JP2006155848
    • 2006-06-05
    • Hitachi Plant Technologies Ltd株式会社日立プラントテクノロジー
    • KOBAYASHI KATSUTOSHICHIBA YOSHIMASA
    • F04D15/00F04D29/041F04D29/043F04D29/046
    • PROBLEM TO BE SOLVED: To reduce total thrust acting on a rotary shaft while inhibiting drop of pump efficiency by reducing quantity of leak of fluid to a back surface of an impeller in a mixed flow pump.
      SOLUTION: The mixed flow pump 50 is provided with the rotary shaft 9, an impeller 20 comprising a hub 4 installed on the rotary shaft 9 and blades 1 provided on an outer circumference of the hub 4, a suction casing 30 introducing fluid to the impeller 20, a delivery casing 40 comprising an inner circumference delivery casing 42 and an outer circumference delivery casing 41 introducing fluid delivered from the impeller 20, and an annular member 10 provided on an outer circumference of the rotary shaft 9. A region 3 is formed by the back surface of the impeller 20 and an inner surface of the inner circumference delivery casing 42, and an outer circumference surface of the rotary shaft 9. The region 3 is divided into a first region 3A in which fluid in a delivery side of the impeller 20 leaks and flows and a second region 3 by the annular member 10, in which fluid of the first region 3A flows through a restriction flow path 13, in an axial direction.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了减少作用在旋转轴上的总推力,同时通过减少混合流量泵中叶轮后表面的流体泄漏量来抑制泵效率的降低。 解决方案:混合流量泵50设置有旋转轴9,叶轮20包括安装在旋转轴9上的轮毂4和设置在轮毂4的外圆周上的叶片1,吸入壳体30将流体 输送到叶轮20的输送壳体40,其包括引导从叶轮20输送的流体的内周输送壳体42和外周输送壳体41以及设置在旋转轴9的外周上的环状部件10.区域3 由叶轮20的后表面和内周输送壳体42的内表面以及旋转轴9的外周表面形成。区域3被分成第一区域3A,其中输送侧中的流体 由第一区域3A的流体沿着轴向流过限制流路13的环状构件10泄漏并流过第二区域3。 版权所有(C)2008,JPO&INPIT