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公开(公告)号：US09869326B2
公开(公告)日：2018-01-16
申请号：US14646305
申请日：2013-12-02
申请人： WILO SE
IPC分类号： F04D15/00 , F04D29/46 , F04D7/04 , F04D13/08 , F04D29/62 , F04D29/70 , F04D1/00 , F04D7/02 , F04D29/30 , F04D29/42
CPC分类号： F04D29/466 , F04D1/00 , F04D7/02 , F04D7/04 , F04D13/08 , F04D15/0033 , F04D29/30 , F04D29/426 , F04D29/622 , F04D29/708
摘要： The invention relates to a centrifugal pump, in particular a waste water submersible pump having an impeller (1), of which the end face facing the pump intake opening is open and only the end face of the impeller facing away from the intake opening (8) is covered by a circular coaxial impeller hub (2), on which the curved vanes (3, 4) are fastened, and in particular molded on, wherein the base plate (7) having the intake opening (8) facing the impeller (1) or at least one segment (7a) of the base plate is mounted so as to be movable against spring pressure (20) in such a way that the distance thereof from the impeller (1) and thus from the impeller vanes (3, 4) changes.
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2.发明申请公开(公告)号：US20170268516A1
公开(公告)日：2017-09-21
申请号：US15528974
申请日：2015-10-22
申请人： WILO SE
发明人： Jens OPPERMANN , Ana CONSTANTIN
摘要： The present invention relates to a method of operating an electric motor-driven centrifugal pump (3) in a hydraulic system (4) having at least one self-controlled load, where a gradient (dQakt/dt) of the volumetric flow rate (Qakt) of the centrifugal pump (3) is determined and the current set-point delivery head (Hsoll) of the centrifugal pump (3) is calculated from a mathematical operation on the gradient (dQakt/dt) weighted with a gain factor (K) and the last specified set-point delivery head (Hsoll,alt). The operation describes a positive feedback between the set-point delivery head (Hsoll) and the volumetric flow rate (Qakt). The gain factor (K) is determined from a calculation instruction that is modified dynamically during operation of the centrifugal pump (3) taking into consideration the current operating point of the centrifugal pump (3) and taking into consideration a current and/or at least one past state of the hydraulic system (4).
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公开(公告)号：US20240093580A1
公开(公告)日：2024-03-21
申请号：US18469638
申请日：2023-09-19
申请人： WILO SE
发明人： Daniel Albers , Maksim Kirpo , Shashank Pawar
CPC分类号： E21B43/129 , F16C19/364 , F16C33/6666 , F16C2360/00
摘要： A bearing arrangement for guiding a motor shaft for supporting axial and/or radial forces of a vertical turbine pump. The bearing arrangement includes a bearing comprising an inner ring which can be non-rotatably connected to the motor shaft and an outer ring, an oil sump filled with an oil, within which the bearing is arranged at least partially immersed in the oil, and an inner oil deflector which is non-rotatably connected to the inner ring and deflects oil conveyed between the inner ring and the outer ring back into the oil sump as a result of rotation of the bearing.
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公开(公告)号：US10788040B2
公开(公告)日：2020-09-29
申请号：US15528974
申请日：2015-10-22
申请人： WILO SE
发明人： Jens Oppermann , Ana Constantin
摘要： The present invention relates to a method of operating an electric motor-driven centrifugal pump (3) in a hydraulic system (4) having at least one self-controlled load, where a gradient (dQakt/dt) of the volumetric flow rate (Qakt) of the centrifugal pump (3) is determined and the current set-point delivery head (Hsoll) of the centrifugal pump (3) is calculated from a mathematical operation on the gradient (dQakt/dt) weighted with a gain factor (K) and the last specified set-point delivery head (Hsoll,alt). The operation describes a positive feedback between the set-point delivery head (Hsoll) and the volumetric flow rate (Qakt). The gain factor (K) is determined from a calculation instruction that is modified dynamically during operation of the centrifugal pump (3) taking into consideration the current operating point of the centrifugal pump (3) and taking into consideration a current and/or at least one past state of the hydraulic system (4).
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公开(公告)号：US09920758B2
公开(公告)日：2018-03-20
申请号：US14769351
申请日：2014-02-06
申请人： WILO SE
CPC分类号： F04C14/28 , F01C1/10 , F04C2/1075 , F04C2/1076 , F04C2250/30
摘要： An eccentric screw pump comprising an outer part (2) and an inner part (3) therein, one of the parts (2, 3) being driven rotatably and the other part (2, 3) being able to move eccentrically relative to the other part (3, 2). The screwthreads (5a, 5b) of the outer part (2) extend angularly over less than an entire helix along the axial length (L) of the part, so that during operation pumping chambers that are open to both ends are created, through which sudden pressure relief takes place.
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公开(公告)号：US20240146158A1
公开(公告)日：2024-05-02
申请号：US18374750
申请日：2023-09-29
申请人： WILO SE
发明人： Daniel HOEKE , Oliver DRUBEL , Henry KOHLER , Roland Edmund UMMELMANN , Heiko DOEHLER , Heiko UNGER , Volker NETSCH , Michael MEIER-WAGNER , Martin VOGT
CPC分类号： H02K15/0043 , H02K3/50 , F04D13/10
摘要： Provided are a method and a tool for manufacturing a coil assembly of an electric motor for a deep well vertical turbine pump with a stator assembly that has a stator bore to receive a rotor and slots radially open to the inside which are respectively separated from each other by a stator tooth and in which electrical conductors of coils of the coil assembly lie, forming distributed windings and, at one axial end of the coil assembly, a winding head. The coil assembly is manufactured by shaping and encapsulating the coils within the tool so that the winding head extends only between an inner diameter and an outer diameter that is smaller than the diameter of the stator bore in order to enable axial insertion of the coil assembly into the stator assembly leading with the winding head in which the coils are respectively wound individually, drawn into the tool as wire bundles and encapsulated within it.
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公开(公告)号：US20240141904A1
公开(公告)日：2024-05-02
申请号：US18374748
申请日：2023-09-29
申请人： WILO SE
IPC分类号： F04D15/00
CPC分类号： F04D15/0088
摘要： A method, analysis device and software for analysing the state of at least one component of a pump assembly notably to determine the rotational speed of the pump assembly or with regard to an error through analysis of the airborne sound emitted by the pump assembly includes the recording of at least a first audio signal during operation of the pump assembly at a first geometric location (Pfar) and at a first distance (Dfar) from the pump assembly and the recording of a second audio signal during operation of the pump assembly at a second geometric location (Pnear) and at a second distance (Dnear) from the pump assembly which is less than the first distance (Dfar).
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公开(公告)号：US20240109076A1
公开(公告)日：2024-04-04
申请号：US17960034
申请日：2022-10-04
申请人： WILO SE
发明人： Johannes Reuschel , Benjamin Wegner , Andreas Zeiss , Thomas Keil
CPC分类号： B02C18/18 , B02C23/36 , F04D29/708
摘要： Subject matter of the invention is a cutting ring for solids-loaded fluid of a pump, comprising a cutting ring base body forming an opening for cooperation with a cutting head, which cutting ring can be stationarily connected to the pump in an axial extension of an impeller of the pump, wherein
a plurality of cutting teeth comprising respectively at least outer cutting edges oriented away from the impeller in the direction of a suction side of the pump are provided at the cutting ring base body around the opening, wherein the cutting teeth extend axially away from the cutting ring base body outwardly at least in the direction of the suction side, and
at least in the outwardly extending cutting teeth a respective radially outwardly extending material recess is formed, and/or
a radially outwardly extending axial depression is formed in the cutting ring base body in a valley between two at least outwardly extending cutting teeth.-
公开(公告)号：US10184476B2
公开(公告)日：2019-01-22
申请号：US15114996
申请日：2015-03-26
申请人： WILO SE
发明人： Tilmann Sanders , Jens Fiedler
摘要： The invention relates to a method of determining a first hydraulic variable (Q) of a pump assembly (1) operated at a predefinable rotation speed (n0) from a mechanical or electrical variable (Mactual, Pel, nactual) by evaluating a correlation between the hydraulic variable (Q) with the mechanical or electrical variable (Mactual, Pel, nactual). A control parameter (Msetpoint, nsetpoint) of the pump assembly (1) is acted on by a periodic excitation signal (fA,n (t), fA,H(t)) having a predetermined frequency (f) such that a second hydraulic variable (H, Δp) is modulated. The instantaneous value of the first hydraulic variable (Q) is determined from the mechanical or electrical variable (Mactual (t), Pel (t), nactual (t)) as a system response (X(t)) to the excitation signal (fA,n (t), fA,H(t)), using the correlation. The invention further relates to a pump control system and a pump assembly that are configured for carrying out the method.
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公开(公告)号：US12083527B2
公开(公告)日：2024-09-10
申请号：US17960034
申请日：2022-10-04
申请人： WILO SE
发明人： Johannes Reuschel , Benjamin Wegner , Andreas Zeiss , Thomas Keil
CPC分类号： B02C18/18 , B02C23/36 , F04D29/708
摘要： Subject matter of the invention is a cutting ring for solids-loaded fluid of a pump, comprising a cutting ring base body forming an opening for cooperation with a cutting head, which cutting ring can be stationarily connected to the pump in an axial extension of an impeller of the pump, wherein
a plurality of cutting teeth comprising respectively at least outer cutting edges oriented away from the impeller in the direction of a suction side of the pump are provided at the cutting ring base body around the opening, wherein the cutting teeth extend axially away from the cutting ring base body outwardly at least in the direction of the suction side, and
at least in the outwardly extending cutting teeth a respective radially outwardly extending material recess is formed, and/or
a radially outwardly extending axial depression is formed in the cutting ring base body in a valley between two at least outwardly extending cutting teeth.
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