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公开(公告)号：US11898572B2
公开(公告)日：2024-02-13
申请号：US17781054
申请日：2021-07-16
Applicant: JIANGSU UNIVERSITY
Abstract: An impeller wake vortex dissipation device under stall condition of a mixed flow pump includes a guide vane and a wake vortex dissipation device. The pump is evenly divided into n guide vane channels by N evenly distributed guide vanes. A wake vortex dissipation device is set in each guide vane channel, and one end of the wake vortex dissipation device is fixedly connected to the inner wall of the pump body. Therefore, each wake vortex dissipation device is located in the middle and upper part of the guide vane channel and does not occupy the lower guide vane channel; the wake vortex dissipation device is provided with a dissipative hole pair, which are used to dissipate the energy of the wake vortex of the impeller.
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公开(公告)号：US20240018969A1
公开(公告)日：2024-01-18
申请号：US17781054
申请日：2021-07-16
Applicant: JIANGSU UNIVERSITY
Abstract: An impeller wake vortex dissipation device under stall condition of a mixed flow pump includes a guide vane and a wake vortex dissipation device. The pump is evenly divided into n guide vane channels by N evenly distributed guide vanes. A wake vortex dissipation device is set in each guide vane channel, and one end of the wake vortex dissipation device is fixedly connected to the inner wall of the pump body. Therefore, each wake vortex dissipation device is located in the middle and upper part of the guide vane channel and does not occupy the lower guide vane channel; the wake vortex dissipation device is provided with a dissipative hole pair, which are used to dissipate the energy of the wake vortex of the impeller.
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公开(公告)号：US11873737B1
公开(公告)日：2024-01-16
申请号：US17871582
申请日：2022-07-22
Applicant: Pratt & Whitney Canada Corp.
Inventor： Tahereh Mirmohammadi Ghoojdi
CPC classification number: F01D9/02 , F01D1/023 , F01D5/143 , F01D5/145 , F01D25/14 , F04D27/023 , F04D27/0215 , F04D29/18 , F04D29/68 , F05D2220/32 , F05D2240/12 , F05D2260/60
Abstract: A system is provided for a gas turbine engine. This gas turbine engine system includes a flowpath wall and a deflector. The flowpath wall includes a surface and an opening to a blind aperture. The surface forms a peripheral boundary of an internal engine flowpath. The opening is disposed in the surface. The blind aperture extends vertically into the flowpath wall from the opening. The deflector projects vertically out from the flowpath wall into the internal engine flowpath. The deflector is configured to deflect gas flowing within the internal engine flowpath over the opening.
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公开(公告)号：US11703064B2
公开(公告)日：2023-07-18
申请号：US17672077
申请日：2022-02-15
Applicant: ECP ENTWICKLUNGSGESELLSCHAFT MBH
Inventor： Lars Bredenbreuker , Joerg Schumacher
IPC: F04D29/18 , F04D15/00 , F04D29/02 , F04D29/24 , F04D29/52 , A61M60/896 , A61M60/13 , A61M60/237 , A61M60/81 , A61M60/205 , A61M60/148 , A61M60/414 , A61M60/135
CPC classification number: F04D29/18 , A61M60/13 , A61M60/205 , A61M60/237 , A61M60/81 , A61M60/896 , F04D15/0005 , F04D29/026 , F04D29/181 , F04D29/247 , F04D29/528 , A61M60/135 , A61M60/148 , A61M60/414 , A61M2205/04 , A61M2210/125 , F05D2300/174 , F05D2300/505 , F05D2300/603 , F05D2300/6034
Abstract: In a pump housing having an interior for accommodating a pump rotor, which may be transferred from a radially compressed state into a radially expanded state, and comprises a housing skin revolving in circumferential direction, as well as at least one reinforcement element, a stretch-resistant element revolving in circumferential direction is provided, which is stretched less than 5% in the expanded state as opposed to the force-free state in circumferential direction, and which limits any further expansion of the pump housing in radial direction.
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公开(公告)号：US20180245597A1
公开(公告)日：2018-08-30
申请号：US15758697
申请日：2016-07-26
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Kenya TAKARAI , Kunito NOGUCHI
CPC classification number: F04D13/06 , F04D13/0693 , F04D29/18 , H02K3/325 , H02K3/34 , H02K3/38 , H02K3/52 , H02K3/522 , H02K11/33 , H02K2203/06
Abstract: Disclosed is an electric fluid pump wherein a radial outer circumferential surface of a stator and an insulating flat surface of an insulating base part, on which crossover wire guides are mounted and which is perpendicular to the outer circumferential surface of the stator, are covered with a synthetic resin coating of predetermined thickness. Since the insulating flat surface of the insulating base part on which the crossover wire guides are mounted and the outer circumferential surface of the stator are covered with the synthetic resin coating, it is possible that, even when a winding force is exerted in a radially inward direction of the stator by winding of crossover wires on the crossover wire guides, the synthetic resin coating on the outer circumferential surface of the stator suppresses changes in the mounting angles of the crossover wire guides and thereby prevents loosening of the crossover wires.
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Patent Agency Ranking
公开(公告)号：US09964115B2
公开(公告)日：2018-05-08
申请号：US15499239
申请日：2017-04-27
Applicant: ECP Entwicklungsgesellschaft MBH
Inventor： Mario Scheckel
CPC classification number: F04D29/18 , A61M1/101 , A61M1/1024 , A61M1/1031 , A61M1/1034 , A61M1/122 , A61M1/125 , B63H1/14 , B63H2001/122 , F04D29/026 , F04D29/247 , F04D29/605 , F05D2230/50 , F05D2300/501 , F05D2300/505 , F05D2300/518 , Y10T29/49229 , Y10T29/49245
Abstract: The invention relates to a fluid pump, in particular to a liquid pump having a rotor with at last one rotor blade for conveying the fluid, the rotor being variable with respect to its diameter between a first, compressed state and a second expanded state. In order to produce a simple compressibility and expandability of the rotor of the pump, it is provided according to the invention that at least one rotor blade is deformable between a first state which it assumes in the compressed state of the rotor and a second state which it assumes in the expanded state of the rotor by means of a fluid counterpressure during a rotation of the rotor during pump operation.
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公开(公告)号：US09957977B1
公开(公告)日：2018-05-01
申请号：US14930121
申请日：2015-11-02
Applicant: Global Marine, Inc.
Inventor： Scott Alan Benford
CPC classification number: F04D29/607 , F04C5/00 , F04D29/18
Abstract: A tool for installing a flexible impeller within a water pump includes a sleeve having a diameter smaller than an initial diameter of an impeller in a relaxed state, a support extending about an end of the sleeve, and a translation assembly engaged with the support and configured for translating a pushing surface of the translation assembly. In operation, an impeller is contracted into a constrained state and placed in the sleeve, the sleeve is then positioned proximal or in engagement with an opening of the water pump, and the translation assembly is translated such that the pushing surface pushes the impeller into the engine assembly as the translation assembly is translated.
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公开(公告)号：US20170363091A1
公开(公告)日：2017-12-21
申请号：US15533175
申请日：2015-12-02
Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
Inventor： Kyoung-Yong LEE , Young Seok CHOI , Jin Hyuk KIM , Uk Hee JUNG
CPC classification number: F04D23/008 , F04D5/002 , F04D29/18 , F04D29/666
Abstract: Provided is a regenerative blower. According to an illustrative embodiment of the present invention, the regenerative blower comprises an impeller comprising a plurality of blades disposed spaced apart in the circumferential direction, wherein, in the plurality of blades, each blade gap is arranged at an incremental angle (ΔΘi).
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公开(公告)号：US20170198813A1
公开(公告)日：2017-07-13
申请号：US15326410
申请日：2015-07-14
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani
CPC classification number: F16J15/32 , F04C2/00 , F04D13/06 , F04D29/043 , F04D29/124 , F04D29/18 , F04D29/406 , F16J15/002 , F16J15/34 , F16J15/3464 , F16J15/36
Abstract: A mechanical seal has a stationary side seal ring and a rotating side seal ring in opposed sliding contact with the stationary side seal ring. One seal ring of the stationary side seal ring and the rotating side seal ring is disposed on a sealed fluid side and constitutes a slide bearing which supports the rotating shaft. The other seal ring is disposed on the opposite side to the sealed fluid side, and a pressing member is attached to the other seal ring for biasing the other seal ring in the axial direction to press sealing faces of both the seal rings.
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公开(公告)号：US20170138363A1
公开(公告)日：2017-05-18
申请号：US15318841
申请日：2015-06-15
Applicant: XYLEM IP MANAGEMENT S.À.R.L.
Inventor： Martin Larsson , Jürgen Mökander , Martin Zetterquist
CPC classification number: F04D15/0066 , F04B49/02 , F04B49/20 , F04D1/00 , F04D13/086 , F04D15/0083 , F04D15/0218 , F04D29/18 , F05D2270/042
Abstract: A pump station arrangement and a method for turning off a pump configured for pumping liquid via a conduit. The pump, before being turned off, being driven at an operational frequency (FN) by a control unit. The method is characterized by the steps of, ramping down the frequency of the pump due to a turn off instruction, the terminal frequency of the ramping down being equal to the operational frequency (FN) of the pump minus at least 10 Hz and the ramping down time being at least a reflection time (TR) for the conduit in question, and the terminal frequency of the ramping down not being less than 10 Hz, and stopping the pump after the ramping down.
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