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    • 17. 发明专利
    • Continuous contact gear pump
    • 连续齿轮泵
    • JPS59206689A
    • 1984-11-22
    • JP8114983
    • 1983-05-10
    • Oval Eng Co Ltd
    • HOTSUTA KOUJI
    • F04C2/20
    • PURPOSE: To prevent force from being applied to the contact part of a tooth profile in a gear pump without causing any change of its delivery amount and pressure, by constituting the gear pump so that theoretical torque of a driving gear of always almost fixed level further theoretical torque of a driven gear of almost zero may be generated by the delivery pressure of fluid.
      CONSTITUTION: If assuming the volume dQ is delivered when a pair of gears O
      1 , O
      2 having a number of teeth Z
      1 , Z
      2 are rotated by the angles dθ
      1 , dθ
      2 , required energy for rotating the pair of gears is the power consumed for applying a pressure P to liquid of the volume dQ. Here the relation, where T
      1 =CONSt (T
      1 : rotating torque of the gear O
      1 ), T
      2 =O (T
      2 : rotating torque of the gear O
      2 ), is a hydrodynamic ideal condition of the gear pump, satisfying a condition of no pulsation without causing any change of the delivery amount and pressure. By this reason, the helix angle of a tooth profile multiplies integrally as against a pitch mπ (m = module) in a tooth width, causing the above condition to be attained.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:为了防止力被施加到齿轮泵的齿廓的接触部分,而不会导致其输送量和压力的任何变化,通过构成齿轮泵,使得驱动齿轮的理论扭矩总是几乎固定的水平进一步 几乎为零的从动齿轮的理论扭矩可能由流体的输送压力产生。 构成:如果假设在具有多个齿Z1,Z2的齿数O1,O2的齿数旋转角度dθ1,dθ2的情况下传送体积dQ,则旋转该对齿轮所需的能量是用于施加压力的功率 P到体积dQ的液体。 这里,T1 = CONSt(T1:齿轮O1的转矩)T2 = O(T2:齿轮O2的转矩)的关系是齿轮泵的流体动力学理想条件,满足没有脉动的条件,没有 导致交货量和压力的任何变化。 由此,齿廓的螺旋角与齿宽度的间距mpi(m =模块)一体地相乘,导致达到上述条件。