公开(公告)号：US20240287997A1

公开(公告)日：2024-08-29

申请号：US18579044

申请日：2021-07-16

Applicant: TBK Co., Ltd.

Inventor： Jea woong SEOK

IPC: F04D29/22 ,  F04D1/00

CPC classification number: F04D29/2216 ,  F04D1/00 ,  F04D29/041 ,  F04D29/628 ,  F04D29/669

Abstract: An impeller (1) of a fluid pump according to the present invention comprises: an impeller body (10) having a first shroud (20) and a plurality of vanes (30) provided on the first shroud (20); and a second shroud (50) bonded to the impeller body (10) and arranged opposed to the first shroud (20) in a central axis direction across the plurality of vanes (30). The first shroud (20) has a boss part (40) protruding in the central axis direction. The second shroud (50) has a central hole (53) through which the boss part (40) is inserted in the central axis direction. By a combination of a recessed first groove part (41) formed on an outer circumferential surface of the boss part (40) and a recessed second groove part (54) formed on an inner circumferential surface of the central hole (53), a balance hole (B) penetrating in the central axis direction is constituted.

公开(公告)号：US11933321B2

公开(公告)日：2024-03-19

申请号：US17565728

申请日：2021-12-30

Applicant: Sulzer Management AG

Inventor： Heike Tischler ,  Thomas Welschinger ,  Laurent Chatagny ,  Stefan Berten

IPC: F04D29/66 ,  F04D29/043 ,  F04D29/18 ,  F04D29/40

CPC classification number: F04D29/669 ,  F04D29/043 ,  F04D29/18 ,  F04D29/406

Abstract: A rotary pump includes a balance drum connected to a pump shaft between a hydraulic unit and the pump shaft, an axial relief passage between a balance drum and a stationary part stationary relative to a pump housing, and a balancing device arranged between the balance drum and the hydraulic unit, the balancing device including a ring-shaped rotary part connected to the pump shaft, and a ring-shaped non-rotary part movable only in the axial direction, the rotary part having an axial face facing the hydraulic unit, the rotary part and the non-rotary part overlap in a radial direction, which is perpendicular to the axial direction, and the non-rotary part movable in the axial direction such that a radial relief passage is open during operation of the pump, with the radial relief passage extending in the radial direction between the rotary part and the non-rotary part.

公开(公告)号：US11927201B2

公开(公告)日：2024-03-12

申请号：US17704016

申请日：2022-03-25

Applicant: Xiamen Huierjie Sanitary Ware Technology Co., Ltd.

Inventor： Xiangji Zheng

IPC: F04D29/66 ,  E03D1/34 ,  E03D5/01 ,  F04D29/42

CPC classification number: F04D29/669 ,  E03D1/34 ,  E03D5/01 ,  F04D29/426

Abstract: An integrated water fitting assembly includes a housing, a drainage mechanism, a dual-outlet micro-pump, and a drainage base. The drainage mechanism and the dual-outlet micro-pump are disposed in the housing, the drainage base is disposed below the housing, a water inlet, a washing water outlet, and a drainage control water outlet communicated with each other are formed in the dual-outlet micro-pump, moreover, the water inlet is communicated with a water source, the washing water outlet extends out of the housing, and the drainage control water outlet is connected inside the drainage mechanism. An integrated water fitting assembly further includes a housing, a drainage mechanism, a dual-head flow distribution assembly, a micro-pump, and a drainage base. A water inlet of the micro-pump is communicated with a water source. A flow water inlet, a washing water outlet, and a drainage control water outlet are formed in the dual-head flow distribution assembly.

公开(公告)号：US11767946B2

公开(公告)日：2023-09-26

申请号：US17369636

申请日：2021-07-07

Applicant: Grundfos Holding A/S

Inventor： Per Hovmand

IPC: F04D13/08 ,  F16L23/18 ,  F16M1/00 ,  F04D29/66 ,  F04D29/60 ,  F04D29/62 ,  F04D3/00

CPC classification number: F16M1/00 ,  F04D3/00 ,  F04D13/086 ,  F04D29/607 ,  F04D29/628 ,  F04D29/669 ,  F16L23/18 ,  F16M2200/08

Abstract: Some particular preferred embodiments relate to the field of pumping stations for sewage and wastewater with submersible pumps mounted in the bottom of the wells. To allow easy cleaning and maintenance of the pumps without getting in contact with the dirty water the solution is a system for easy lifting of the pump out of the well and lowering the pump again with an auto coupling.

公开(公告)号：US11754095B2

公开(公告)日：2023-09-12

申请号：US17623271

申请日：2021-07-22

Applicant: JIANGSU UNIVERSITY

Inventor： Wei Li ,  Lei Wang ,  Ling Zhou ,  Yong Zhu ,  Hao Chang ,  Qi Chen ,  Pu Wu

IPC: F04D29/66 ,  F04D15/00 ,  F04D29/02 ,  F04D29/42

CPC classification number: F04D29/669 ,  F04D15/0027 ,  F04D29/026 ,  F04D29/426

Abstract: A pump front chamber automatic compensation device for improving closed impeller backflow is provided. The automatic compensation device is mounted on the inner wall surface of the pump body front chamber, extending from the inner wall surface of the pump body front chamber to the impeller front cover plate, stopping the flow of fluid from the impeller outlet to the pump front chamber. The automatic compensation device includes a spacer plate and a compensation feedback device. One end of the spacer plate extends into the pump front chamber, and the other end is connected to the automatic compensation assembly, through which the length of the spacer extension is automatically compensated. The pump front chamber automatic compensation device can prevent the fluid flowing out of the impeller outlet from entering the front chamber of the centrifugal pump, thus improving the operating efficiency and stability of the centrifugal pump.

公开(公告)号：US10036389B2

公开(公告)日：2018-07-31

申请号：US14567775

申请日：2014-12-11

Applicant: Baker Hughes Incorporated

Inventor： Yong Li ,  Scott C. Strattan

IPC: F04D13/02 ,  E21B43/12 ,  F04D13/10 ,  F04D29/66 ,  H02K49/10

CPC classification number: F04D13/024 ,  E21B43/128 ,  F04D13/026 ,  F04D13/027 ,  F04D13/10 ,  F04D29/669 ,  H02K49/106

Abstract: An electrical submersible well pump assembly includes a rotary pump and a motor. An inner rotor is coupled to the motor shaft. The inner rotor has steel discs stacked together with end caps at each end. The discs have apertures that align to define axially extending slots. Each of the slots has a closed outer wall spaced radially inward from an outer diameter surface of the inner rotor. Inner rotor magnets are located within the slots. Continuous open and thin gaps between rotating components act as hydrodynamic bearings. Damper bars extend axially at points between the outer walls of the slots and the outer diameter surface of the inner rotor. An outer rotor has a bore that receives the inner rotor, the outer rotor being operatively coupled to the pump shaft for rotation therewith. Outer rotor magnets are mounted to the bore of outer rotor.

公开(公告)号：US09932861B2

公开(公告)日：2018-04-03

申请号：US15308628

申请日：2015-06-12

Applicant: ECHOGEN POWER SYSTEMS LLC

Inventor： Jason Lee Preuss ,  Timothy J. Held

IPC: F01D15/08 ,  F01D25/22 ,  F01K25/10 ,  F16C32/06 ,  F01K13/02 ,  F01K23/10 ,  F01D25/16 ,  F01K25/08 ,  F04C29/12

CPC classification number: F01D25/22 ,  F01D15/08 ,  F01D25/16 ,  F01K13/02 ,  F01K23/10 ,  F01K25/08 ,  F01K25/103 ,  F04C29/12 ,  F04D15/0005 ,  F04D29/0473 ,  F04D29/669 ,  F05D2210/10 ,  F05D2270/301 ,  F16C32/06 ,  F16C32/0644 ,  F16C32/0648

Abstract: A method includes controlling a bearing fluid supply system to provide the bearing fluid to a hydrostatic bearing of the turbopump assembly. The bearing fluid includes a supercritical working fluid. The method also includes receiving data corresponding to a pressure of the bearing fluid measured at or near a bearing fluid drain fluidly coupled to the hydrostatic bearing, determining a thermodynamic state of the bearing fluid at or near the bearing fluid drain based at least in part on the received data, and controlling a backpressure regulation valve to throttle the backpressure regulation valve between an opened position and a closed position to regulate a backpressure in a bearing fluid discharge line to maintain the bearing fluid in a supercritical state in the hydrostatic bearing and/or at or near the bearing fluid drain.

公开(公告)号：US09926897B2

公开(公告)日：2018-03-27

申请号：US14168380

申请日：2014-01-30

Applicant: DENSO CORPORATION

Inventor： Masaharu Ohashi ,  Toshihiko Muramatsu

IPC: F02M37/08 ,  F02M37/10 ,  F04D29/42 ,  F04D13/06 ,  F04D29/66 ,  F04D29/70 ,  F02M37/22

CPC classification number: F02M37/10 ,  F02M2037/228 ,  F04D13/06 ,  F04D29/4293 ,  F04D29/669 ,  F04D29/708

Abstract: A fuel pump module includes a suction filter, a fuel pump portion having an end part opposing the suction filter, and a holding member allowing the fuel pump portion to rotate around a central axis of the fuel pump portion and restricting the fuel pump portion from moving in an axis direction. A convex part protruding toward the suction filter is defined at the end part of the fuel pump portion. The holding member is positioned between the fuel pump portion and the suction filter and has a concave part, in which the convex part is inserted, such that a clearance is defined between the convex part and the concave part in a radial direction. The convex part has a tip end capable to be in contact with the concave part in the axis direction.

公开(公告)号：US09850783B2

公开(公告)日：2017-12-26

申请号：US14661731

申请日：2015-03-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takumi Hikichi ,  Osao Kido ,  Atsuo Okaichi ,  Yoshio Tomigashi

IPC: F04C2/10 ,  F04C15/06 ,  F04D29/66 ,  F01K7/00 ,  F04C15/00 ,  F04C13/00 ,  F04D1/00 ,  F04D13/06 ,  F04D13/16 ,  F04D9/00

CPC classification number: F01K7/00 ,  F04C2/10 ,  F04C13/007 ,  F04C15/008 ,  F04C15/06 ,  F04D1/00 ,  F04D9/003 ,  F04D13/06 ,  F04D13/16 ,  F04D29/669

Abstract: A liquid pump includes: a casing; a feed pipe bringing liquid from outside the casing to inside the casing; a pump mechanism provided in the casing and including a suction hole for sucking in the liquid and a discharge hole for discharging the liquid sucked in via the suction hole; a suction space positioned in the casing on a suction-hole inlet side and making a flow path formed by the feed pipe and the suction hole communicate with each other; and a discharge space positioned on a discharge-hole outlet side in the casing and communicating with the discharge hole. The suction space includes a gas accumulation area that is positioned above a center of an opening at casing-side end of the feed pipe, when viewed vertically and that accumulates gas brought into the casing through the feed pipe together with the liquid to separate the gas from the liquid.

公开(公告)号：US09782054B2

公开(公告)日：2017-10-10

申请号：US14595285

申请日：2015-01-13

Applicant: General Electric Company

Inventor： John Edward Dries

IPC: A47L15/42 ,  F04D13/06 ,  F04D29/66 ,  F04D29/60 ,  F04D29/62

CPC classification number: A47L15/4225 ,  F04D13/06 ,  F04D29/605 ,  F04D29/628 ,  F04D29/669

Abstract: Pump assemblies and fluid circulation systems for dishwasher appliances are provided. A pump assembly includes a housing defining an interior, and a pump. The pump includes an impeller disposed within the interior, and a motor connected to the impeller and comprising a stator and a rotor. The rotor is rotatable about a central axis. The stator is rotatable about the central axis relative to the rotor and the housing. The pump further includes an elastic damper coupled to the stator for reducing stator torque ripple transmissions to the housing.