公开(公告)号：US20240240635A1

公开(公告)日：2024-07-18

申请号：US18434078

申请日：2024-02-06

Applicant: Magpumps Limited

Inventor： Leo Dearden

IPC: F04C2/10 ,  F04C14/28 ,  F04C15/00

CPC classification number: F04C2/102 ,  F04C14/28 ,  F04C15/0049 ,  F04C15/008 ,  F04C15/0096 ,  F04C2240/20 ,  F04C2270/03 ,  F04C2270/145 ,  F04C2270/18 ,  F04C2270/20

Abstract: A gerotor pump includes a pump head including a configuration of gerotors for pumping in operation a fluid medium from an input port arrangement to an output port arrangement, and a motor arrangement for providing mechanical power in operation for actuating the configuration of gerotors. The configuration of gerotors includes an outer gerotor and an inner gerotor that are operable to cooperate to entrap and propel the fluid medium from the input port arrangement to the output port arrangement. At least one of the outer gerotor and the inner gerotor are fabricated from a flexible material and/or are internally structured so as to exhibit a flexible peripheral exterior surface in operation. Moreover, the outer gerotor and the inner gerotor are loaded and/or are assembled together in a preloaded state, within the pump head, so that a gap formed between the gerotors whereat they mutually cooperate for entrapping and propelling the fluid medium is maintained in a flexibly compressed state when the pump is in operation. Optionally, at least one of the outer and inner gerotors is fabricated as a hybrid component including regions of a flexible material therein, and regions of an inflexible material therein. More optionally, the flexible material has a Young's modulus in a range of 1 MegaPascal (MPa) to 5 GigaPascals (GPa), and the inflexible material has a Young's modulus in a range of 2 GPa to 420 GPa. Optionally, at least one gerotor gerotor pump is includes in a gerotor pump apparatus that includes a pulse attenuating arrangement at an output port of the gerotor pump apparatus for attenuating periodic pulses and fluctuations in a fluid flow provided in use at the output port.

公开(公告)号：US20180347561A1

公开(公告)日：2018-12-06

申请号：US15779170

申请日：2016-11-28

Applicant: AUDI AG

Inventor： Simon OCHSENKÜHN

IPC: F04C2/20 ,  F04C2/08 ,  F04C15/00

CPC classification number: F04C15/0049 ,  F04C2/084 ,  F04C2/20

Abstract: An external gear pump, having a driving first pump gear and a second pump gear driven by the first pump gear, which intermesh to convey a fluid from a suction side to a pressure side of the external gear pump. The first pump gear and the second pump gear each have a plurality of teeth, each having a leading tooth flank leading in the rotation direction of the corresponding pump gear and a trailing tooth flank. The leading tooth flank of the first pump gear interacts with the trailing tooth flank of the second pump gear to drive the second pump gear via the first pump gear. The trailing tooth flanks of the first pump gear extend concavely to form a fluid pocket at at least one axial position in the radial direction at least in sections in each case.

公开(公告)号：US20180135628A1

公开(公告)日：2018-05-17

申请号：US15809857

申请日：2017-11-10

Applicant: David J. Grimes ,  Charles F. Carr

Inventor： David J. Grimes ,  Charles F. Carr

IPC: F04C15/00 ,  F04C15/06

CPC classification number: F04C15/0049 ,  F01N3/2066 ,  F04C2/08 ,  F04C2/14 ,  F04C15/0069 ,  F04C15/008 ,  F04C15/06 ,  F04C2240/30

Abstract: A pump includes a pump-head portion including a pump body and a magnet cup. The pump body defines an inlet and an outlet, and the pump body and the magnet cup together define a pump cavity. The pump includes a suction shoe situated on the pump body. The suction shoe includes an engaging portion. The pump includes a movable pumping member situated in the pump cavity and at least partially received within the suction shoe. The pump includes a permanent magnet coupled to the pumping member. The pump includes a pump-driver portion including a magnet driver located outside the magnet cup. The pump includes a pressure-absorbing member situated in the pump cavity. The pressure-absorbing member is configured to engage the engaging portion of the suction shoe such that the suction shoe is urged radially inwardly with respect to an outer edge portion of the surface of the pump body.

公开(公告)号：US09951761B2

公开(公告)日：2018-04-24

申请号：US14597859

申请日：2015-01-15

Applicant: Ingersoll-Rand Company

Inventor： Michael John Lucas ,  Larry Rodney Stutts ,  James Richard Lindsey

IPC: F04B39/00 ,  F04B11/00 ,  F04C29/06 ,  F04C15/00 ,  F04D29/66

CPC classification number: F04B39/0055 ,  F04B11/0091 ,  F04B39/0027 ,  F04C15/0049 ,  F04C29/06 ,  F04D29/663

Abstract: A pressure pulse dampener for a compressor system is disclosed herein. The pulse dampener includes a housing having inlet passageway and an outlet passageway. A radially expanding annular passageway is formed downstream of the fluid inlet. A toroidal passageway is formed downstream of the annular passageway, the toroidal passageway being configured to direct fluid in a generally circumferential path around the central body. A connecting passageway is formed through the central body to provide fluid communication between the toroidal passageway and the fluid outlet.

公开(公告)号：US20180010607A1

公开(公告)日：2018-01-11

申请号：US15544345

申请日：2016-01-15

Applicant: DENSO CORPORATION

Inventor： Hiromi SAKAI ,  Daiji FURUHASHI

IPC: F04C15/06 ,  F04C2/10 ,  B23C3/34 ,  F02M37/08

CPC classification number: F04C15/06 ,  F02M37/08 ,  F04C2/102 ,  F04C15/0049 ,  F04C2230/10 ,  F04C2240/30 ,  F04C2250/10

Abstract: A suction side end part of a suction guide passage and a discharge side end part of a discharge guide passage are opposed to each other with a gap therebetween. At a deviation angle at which contraction of a pump chamber starts, an outer peripheral part of the discharge side end part is formed along an inner tooth, and an inner peripheral part of the discharge side end part is formed along an outer tooth. A working tool that rotates and cuts circularly is moved around on a pump housing in a single continuous line to form an outline of the discharge guide passage, thereby forming the discharge guide passage. The working tool is moved around on the pump housing in a single continuous line to form an outline of the suction guide passage, thereby forming the suction guide passage.

公开(公告)号：US20170335846A1

公开(公告)日：2017-11-23

申请号：US15592341

申请日：2017-05-11

Applicant: JTEKT CORPORATION

Inventor： Naohito YOSHIDA

IPC: F04C15/00 ,  F04C18/14 ,  F04C29/12 ,  F04C2/14 ,  F04C29/00 ,  F04C15/06

CPC classification number: F04C15/0049 ,  F04C2/14 ,  F04C2/18 ,  F04C15/0046 ,  F04C15/06 ,  F04C18/14 ,  F04C29/0035 ,  F04C29/12 ,  F04C2240/30 ,  F04C2240/50 ,  F04C2240/60

Abstract: In a gear pump, a gear chamber is defined in a housing hole of a housing. A pair of gears is housed in the gear chamber. The gears are rotatably supported at support holes of a pair of side plates via support shafts. As viewed in an axial direction of the support shafts during rotation of the gears, addendum circles of the gears displaced under a differential pressure between a low-pressure chamber and a high-pressure chamber form first contact points with respect to an inner peripheral surface that defines a housing hole. As viewed in the axial direction of the support shafts during rotation of the gears, the first contact points are covered with the side plates displaced under the differential pressure.

公开(公告)号：US20170089233A1

公开(公告)日：2017-03-30

申请号：US14868818

申请日：2015-09-29

Applicant: Ford Global Technologies, LLC

Inventor： Mohammad Ali MOETAKEF ,  Abdelkrim ZOUANI ,  Minghui CHIEN

IPC: F01M1/02 ,  F04C15/06 ,  F04C2/344

CPC classification number: F01M1/02 ,  F01C21/0818 ,  F01M2001/0238 ,  F01M2001/0246 ,  F04C2/3442 ,  F04C15/0049 ,  F04C15/06 ,  F04C2210/206 ,  F04C2240/20 ,  F04C2270/13 ,  F04C2270/14

Abstract: A vane fluid pump for a vehicle component is provided with an inner rotor supported within a cam. The inner rotor has an outer wall extending between first and second end faces, the outer wall defining a series of slots spaced apart about the outer wall to provide a series of outer wall sections. One of the wall sections defines a groove. Another of the wall sections is independent of grooves or is ungrooved. The pump has vanes positioned within respective slots of the inner rotor and extending outwardly to contact the continuous inner wall of the cam. The groove on the inner rotor is configured fluidly couple with a notch on the housing to provide fluid flow to the discharge port from an upstream pumping chamber to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise.

公开(公告)号：US09506466B2

公开(公告)日：2016-11-29

申请号：US14339603

申请日：2014-07-24

Applicant: JTEKT Corporation

Inventor： Tsuyoshi Ebihara ,  Teppei Morita ,  Katsuhisa Udo

IPC: F01C21/18 ,  F03C2/08 ,  F04C2/08 ,  F04C15/06 ,  F04C2/10 ,  F04C15/00

CPC classification number: F04C2/10 ,  F04C2/086 ,  F04C2/102 ,  F04C15/0026 ,  F04C15/0049 ,  F04C2250/101

Abstract: In a gear pump, an outer rotor and an inner rotor are disposed in a rotor installation chamber defined by a pump body and a pump cover. A suction port groove and a discharge port groove are formed in at least one of the pump body and the pump cover. A narrowing portion is formed at a portion of a radially outer side wall portion of the suction port groove, the portion being close to a terminal end wall portion of the suction port groove. The narrowing portion narrows the groove width in the radial direction. A pressurizing region that pressurizes oil in the gear chamber is formed between the narrowing portion and the terminal end wall portion.

Abstract translation: 在齿轮泵中，外转子和内转子设置在由泵体和泵盖限定的转子安装室中。 吸入口槽和排出口槽形成在泵体和泵盖中的至少一个中。 在吸入口槽的径向外侧壁部分的一部分处形成狭窄部分，该部分靠近吸入口槽的终端壁部分。 狭窄部分使径向宽度减小。 在减速部和终端壁部之间形成有对齿轮室内的油进行加压的加压区域。

公开(公告)号：US20160333876A1

公开(公告)日：2016-11-17

申请号：US15111188

申请日：2015-01-19

Applicant: KYB Corporation

Inventor： Tomoyuki FUJITA ,  Koichiro AKATSUKA ,  Fumiyasu KATO ,  Hiroki GOMI

IPC: F04C15/06 ,  F04C2/344

CPC classification number: F04C15/06 ,  F01C21/0863 ,  F04C2/3446 ,  F04C15/0049 ,  F04C2210/206 ,  F04C2240/20 ,  F04C2250/102 ,  F04C2250/30

Abstract: A vane pump used as a fluid pressure source includes: a rotor that is rotationally driven; a plurality of vanes that are inserted into the rotor in a freely slidable manner; a cam ring at which tip-end portions of the vanes slides as the rotor rotates; a pump chamber that is defined between the adjacent vanes; a suction port that guides working fluid to the pump chamber; a discharge port through which the working fluid discharged from the pump chamber is guided; a groove-like notch that extends from an opening edge of the discharge port in an opposite direction from rotation direction of the rotor, and the notch has a gradient-changing portion at which a rate of change of opening area is decreased in the rotation direction of the rotor.

Abstract translation: 用作流体压力源的叶片泵包括：旋转驱动的转子; 以可自由滑动的方式插入转子中的多个叶片; 凸轮环，当转子旋转时，叶片的尖端部分滑动; 在相邻叶片之间限定的泵室; 将工作流体引导到泵室的吸入口; 引导从泵室排出的工作流体的排出口; 从所述排出口的开口边缘沿与所述转子的旋转方向相反的方向延伸的槽状切口，所述切口具有梯度变化部，所述切口部的开口面积的变化率在旋转方向上减小 的转子。

公开(公告)号：US20160281709A1

公开(公告)日：2016-09-29

申请号：US15174576

申请日：2016-06-06

Applicant: Brian J. O'Connor

Inventor： Brian J. O'Connor

IPC: F04C2/12 ,  F04C15/06 ,  F04C15/00 ,  F04C13/00 ,  F04C14/02

CPC classification number: F04C2/126 ,  F01C17/02 ,  F01C21/108 ,  F04C2/123 ,  F04C11/001 ,  F04C13/001 ,  F04C14/02 ,  F04C15/0049 ,  F04C15/0073 ,  F04C15/06 ,  F04C2240/20 ,  F04C2240/30 ,  F04C2240/60

Abstract: Designs for multiple segment lobe pumps are shown. The designs include pumps using rotors having two lobes to a plurality of lobes and segments that include two segments to a plurality of segments. Designs for both vertical, or straight walled conventional lobed rotors, as well as helical lobe rotors are shown. The designs are applicable to a variety of rotors and number of segments. In one particular case the designs enable a three lobe helical pump. Designs are also shown for separator plates used between the multiple segments. The separator float between the pairs of lobes in a segment and can also have a fixed position between the lobes by inclusion of end pieces that enable clamping of the separator plates in position.

Abstract translation: 显示了多段叶片泵的设计。 这些设计包括使用具有两个叶片的转子的泵，所述转子具有多个叶片和包括多个片段的两个片段的片段。 显示垂直或直壁常规叶片转子以及螺旋叶片转子的设计。 这些设计适用于各种转子和多个分段。 在一种特殊情况下，该设计使得能够使用三叶螺旋泵。 还显示了在多个段之间使用的隔板的设计。 分离器在段中的两对叶片之间浮动，并且还可以通过包括能够将分隔板夹紧在适当位置的端部件在凸角之间具有固定位置。