公开(公告)号：US06007311A

公开(公告)日：1999-12-28

申请号：US970850

申请日：1997-11-14

申请人： John Edward Cygnor ,  Shin Katsumata ,  Jeff Clark Miller

发明人： John Edward Cygnor ,  Shin Katsumata ,  Jeff Clark Miller

IPC分类号： F04D1/06 ,  F04D13/12 ,  F04D29/04 ,  F04D29/047 ,  F16C32/06 ,  F04B35/00

CPC分类号： F04D29/047 ,  F04D1/06 ,  F04D13/12 ,  F16C32/0659 ,  F05B2240/53

摘要： The weight and volume of a centrifugal fuel pump ideally suited for use in a fuel system for a turbine engine (12) may be reduced in a construction including a single shaft (10) mounting an inducing impeller (18), an impeller (22) for a regenerative pump, and an impeller (24) for a centrifugal volute pump. Hydrostatic bearings (26), (28) journal the shaft (10) within a pump housing (14) and are provided with fuel under pressure via a conduit (30) connected to the outlets of the regenerative pump and the centrifugal volute pump defined by the impellers (22) and (24), respectively.

摘要翻译： 理想地适用于用于涡轮发动机（12）的燃料系统的离心式燃料泵的重量和体积可以减小为包括安装诱导叶轮（18）的单个轴（10），叶轮（22） 用于再生泵，以及用于离心式蜗壳泵的叶轮（24）。 静压轴承（26），（28）在泵壳体（14）内轴颈轴（10），并且通过连接到再生泵的出口的管道（30）和由泵壳体（14）限定的离心蜗壳泵 叶轮（22）和（24）。

公开(公告)号：US6022197A

公开(公告)日：2000-02-08

申请号：US970651

申请日：1997-11-14

申请人： John Edward Cygnor ,  Jeff Clark Miller

发明人： John Edward Cygnor ,  Jeff Clark Miller

IPC分类号： F02C7/236 ,  F04D13/12 ,  F04B23/14

CPC分类号： F02C7/236 ,  F04D13/12 ,  Y02T50/671

摘要： Difficulties in adapting centrifugal pumps for use as fuel pumps for turbine powered aircraft are avoided in a system including a centrifugal volute pump (22) on a common shaft (18) with a regenerative pump (24). A pressure responsive throttling valve (46) is connected to the inlet (50) of the regenerative pump (24) so as to cause the regenerative pump (24) to provide fuel at a desired, substantially constant pressure while a check valve (80) is connected to the outlet (72) of the centrifugal volute pump (22) to allow flow from the volute (72) but not the reverse. The outlet side of the check valve (80) can also be selectively connected to the outlet (84) of the regenerative pump (24) so that when the pumps are rotating relatively slowly, the regenerative pump (24) will pump fuel at the desired, substantially constant pressure and, as rotational speed increases, the check valve (80) will open when the centrifugal volute pump (22) is pumping fuel at or about the desired substantially constant pressure.

摘要翻译： 在包括具有再生泵（24）的公共轴（18）上的离心式蜗壳泵（22）的系统中，避免了将离心泵适用于涡轮动力飞机的燃料泵的困难。 压力响应节流阀（46）连接到再生泵（24）的入口（50），以便使再生泵（24）以期望的基本恒定的压力提供燃料，同时止回阀（80） 连接到离心蜗壳泵（22）的出口（72），以允许从蜗壳（72）流出，而不是相反。 止回阀（80）的出口侧还可以选择性地连接到再生泵（24）的出口（84），使得当泵相对缓慢地旋转时，再生泵（24）将泵送所需的燃料 ，基本上恒定的压力，并且随着旋转速度的增加，当离心式蜗壳泵（22）在期望的基本上恒定的压力下或在其周围泵送燃料时，止回阀（80）将打开。

公开(公告)号：US07637724B2

公开(公告)日：2009-12-29

申请号：US10922293

申请日：2004-08-19

申请人： John Edward Cygnor

发明人： John Edward Cygnor

IPC分类号： F04C2/344

CPC分类号： F01C21/0863 ,  F04C2/3446

摘要： A radially pressure balanced vane pump includes a housing that defines an inlet port and a discharge port. A cam block disposed within the housing defines a continuous inner surface. A plurality of vanes are supported within rotor slots and rotated above a shaft. Each vane includes a vane tip having a radius with a centerline offset from the centerline of the vane. A pressure biasing the vane into contact with the cam block is distributed over the vane tip radius. Further, the vanes are biased into contact with the inner surface of the cam block by communication of discharge pressure under the vane. The vane tip radius along with the pressure balance between under vane and under vane discharge pressure provide for the use of low cost and easily fabricated ductile steels.

摘要翻译： 径向压力平衡叶片泵包括限定入口和排出口的壳体。 设置在壳体内的凸轮块限定连续的内表面。 多个叶片支撑在转子槽内并在轴上方旋转。 每个叶片包括具有偏离叶片中心线的中心线的半径的叶片尖端。 偏压叶片与凸轮块接触的压力分布在叶片顶端半径上。 此外，通过叶片下方的排出压力的连通，叶片被偏置成与凸轮块的内表面接触。 叶片尖端半径以及叶片下和叶片排出压力之间的压力平衡提供了使用低成本和易于制造的延性钢。

公开(公告)号：US06059537A

公开(公告)日：2000-05-09

申请号：US980863

申请日：1997-11-13

申请人： John Edward Cygnor

发明人： John Edward Cygnor

IPC分类号： F04D13/12 ,  F04B23/14

CPC分类号： F04D13/12

摘要： A fuel pressurization and pumping system for use in a turbine powered aircraft or the like makes use of the advantages of centrifugal pumps, even in a high pressure mode and includes a centrifugal volute pump (24) having a fuel inlet (28) and fuel outlet (32) along with a regenerative pump (34) having a fuel inlet (36) and a fuel outlet (38). The fuel outlet (32) of the centrifugal volute pump (24) is connected to the fuel inlet (36) of the regenerative pump (34) and a valve (50) is provided for blocking flow from the centrifugal volute pump (24) to the regenerative pump (34). A first pressure regulator (56) is connected to regenerative pump outlet (38) for maintaining pressure thereat at a relatively low elevated level and a second pressure regulator (130) is connected to the regenerative pump outlet (38) for maintaining pressure thereat at a relatively high elevated level. A valve system (66), (90) is provided for selectively disabling the first pressure regulator (56).

摘要翻译： 用于涡轮动力飞行器等的燃料加压和泵送系统利用离心泵的优点，即使在高压模式下也包括具有燃料入口（28）和燃料出口（28）的离心蜗壳泵（24） （32）以及具有燃料入口（36）和燃料出口（38）的再生泵（34）。 离心蜗壳泵（24）的燃料出口（32）连接到再生泵（34）的燃料入口（36），并且设置有阀（50），用于阻止从离心蜗壳泵（24）到 再生泵（34）。 第一压力调节器（56）连接到再生泵出口（38），用于将压力保持在相对较低的升高水平，并且第二压力调节器（130）连接到再生泵出口（38），用于将压力保持在 相对较高的提升水平。 阀门系统（66）（90）被设置用于选择性地禁用第一压力调节器（56）。