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    • 3. 发明授权
    • Gear pump with fluid communication portion
    • 齿轮泵与流体连通部分
    • US08757993B2
    • 2014-06-24
    • US13376565
    • 2009-06-25
    • Tomo Sato
    • Tomo Sato
    • F03C2/00F03C4/00F04C2/00
    • F04C2/18F04C2/086F04C15/0049F04C2240/30
    • In a gear pump according to the present invention, a wall surface portion of a casing (2) includes a drive side partition surface (41) on which tooth crests (11) of a drive gear (10) slide, a driven side partition surface (42) on which tooth crests (21) of a driven gear (20) slide, a suction side inner peripheral surface (43) that connects the drive side partition surface (41) and the driven side partition surface (42) on a suction chamber (3) side, and a discharge side inner peripheral surface (44) that connects the drive side partition surface (41) and the driven side partition surface (42) on a discharge chamber (4) side. Tapered portions (60) are provided in connecting portions between the respective partition surfaces (41, 42) and the discharge side inner peripheral surface (44) to cause tooth spaces (12, 22) surrounded by the wall surface portion of the casing (2) and teeth of the gears (10, 20) positioned near the partition surface (41, 42) side of the connecting portions to communicate gradually with the discharge chamber (4) as the gears (10, 20) rotate.
    • 在根据本发明的齿轮泵中,壳体(2)的壁面部分包括驱动齿轮(10)的齿顶(11)滑动的驱动侧分隔表面(41),从动侧分隔表面 (20)的齿顶(21)滑动的吸入侧内周面(43),吸入侧内周面(43),其在驱动侧分隔面(41)和从动侧分隔面 以及在排出室(4)侧连接驱动侧分隔面(41)和从动侧分隔面(42)的排出侧内周面(44)。 在各个分隔面(41,42)和排出侧内周面(44)之间的连结部设置有锥形部(60),以使壳体(2)的壁面部包围的齿空间(12,22) )和位于连接部分的分隔表面(41,42)侧附近的齿轮(10,20)的齿,随着齿轮(10,20)的旋转,与排出室(4)逐渐连通。
    • 4. 发明申请
    • GEAR PUMP
    • 齿轮泵
    • US20120082581A1
    • 2012-04-05
    • US13376565
    • 2009-06-25
    • Tomo Sato
    • Tomo Sato
    • F01C1/18
    • F04C2/18F04C2/086F04C15/0049F04C2240/30
    • In a gear pump according to the present invention, a wall surface portion of a casing (2) includes a drive side partition surface (41) on which tooth crests (11) of a drive gear (10) slide, a driven side partition surface (42) on which tooth crests (21) of a driven gear (20) slide, a suction side inner peripheral surface (43) that connects the drive side partition surface (41) and the driven side partition surface (42) on a suction chamber (3) side, and a discharge side inner peripheral surface (44) that connects the drive side partition surface (41) and the driven side partition surface (42) on a discharge chamber (4) side. Tapered portions (60) are provided in connecting portions between the respective partition surfaces (41, 42) and the discharge side inner peripheral surface (44) to cause tooth spaces (12, 22) surrounded by the wall surface portion of the casing (2) and teeth of the gears (10, 20) positioned near the partition surface (41, 42) side of the connecting portions to communicate gradually with the discharge chamber (4) as the gears (10, 20) rotate.
    • 在根据本发明的齿轮泵中,壳体(2)的壁面部分包括驱动齿轮(10)的齿顶(11)滑动的驱动侧分隔表面(41),从动侧分隔表面 (20)的齿顶(21)滑动的吸入侧内周面(43),吸入侧内周面(43),其在驱动侧分隔面(41)和从动侧分隔面 以及在排出室(4)侧连接驱动侧分隔面(41)和从动侧分隔面(42)的排出侧内周面(44)。 在各个分隔面(41,42)和排出侧内周面(44)之间的连结部设置有锥形部(60),以使壳体(2)的壁面部包围的齿空间(12,22) )和位于连接部分的分隔表面(41,42)侧附近的齿轮(10,20)的齿,随着齿轮(10,20)的旋转,与排出室(4)逐渐连通。