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公开(公告)号：US09828999B2
公开(公告)日：2017-11-28
申请号：US14911935
申请日：2014-08-06
Applicant: XYLEM IP MANAGEMENT S.à r.l.
Inventor： Patrik Andersson , Stefan Ramström
CPC classification number: F04D7/045 , F04D3/00 , F04D15/0033 , F04D29/042 , F04D29/20 , F04D29/528
Abstract: An impeller assembly and a pump for pumping a liquid, including a pump chamber and an impeller arranged to rotate in the pump chamber, the impeller being suspended in a lower end of an axially extending drive shaft unit, wherein the lower end of the drive shaft unit is received in a cylinder-shaped recess of the impeller, wherein the impeller is displaceable back and forth in the axial direction in relation to the drive shaft unit. The impeller further includes an axially extending hole that connects the cylinder-shaped recess and the pump chamber and that the drive shaft unit includes an axially extending pin that projects from the lower end of the drive shaft unit, wherein the pin is arranged in the hole.
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公开(公告)号：US11221149B2
公开(公告)日：2022-01-11
申请号：US15776560
申请日：2016-11-14
Applicant: Xylem IP Management S.à r.l.
Inventor： Oliver Laing
Abstract: A pump device is proposed for arrangement on a recirculation line of an industrial water system including a feed pump, a check valve and a bypass line for the check valve. The bypass line is arranged in parallel to the check valve and wherein a combination of the check valve and bypass line is arranged in series to the feed pump.
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公开(公告)号：US10519982B2
公开(公告)日：2019-12-31
申请号：US15920535
申请日：2018-03-14
Applicant: Xylem IP Management S.à r.l.
Inventor： Stefano Danieli , Luigi D'Andrea
IPC: F04D29/043 , F04D29/70 , F04D29/046 , F04D13/02
Abstract: A de-blocking device for a hydraulic pump includes a can having a longitudinal axis and a conduit extending longitudinally along the longitudinal axis and having a first terminal aperture. The device further includes a bearing fixedly positioned in the conduit spaced from the first terminal aperture, and a plunger axially movably positioned in the conduit between the bearing and the first terminal aperture. A biasing element is positioned between the bearing and the plunger wherein the movement of the plunger toward the bearing compresses the biasing element.
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公开(公告)号：US20190293065A1
公开(公告)日：2019-09-26
申请号：US16302209
申请日：2017-05-10
Applicant: Xylem IP Management S.à r.l.
Inventor： Zhiyong Zhong
Abstract: Described herein is a method for stopping a submersible pump when the pump is snoring, wherein the pump is operatively connected to a control unit. The method includes regulating, by way of the control unit, the operational speed of the pump in order to direct an average power of the pump towards a predetermined set level. The method includes determining whether the instantaneous power of the pump is outside a predetermined range, by monitoring at least one of the parameters: power [P], current [I] and power factor [cos ϕ]. The method further includes determining whether the operational speed of the pump is increasing, and stopping the pump due to snoring, by way of the control unit, when the instantaneous power of the pump is determined as being outside the predetermined range at the same time the operational speed of the pump is determined as increasing.
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公开(公告)号：US20190244802A1
公开(公告)日：2019-08-08
申请号：US16315372
申请日：2017-07-07
Applicant: Xylem IP Management S.à r.l.
Inventor： Andre Wojciechowski , Michael Lang , Uwe Kanigowski
CPC classification number: H01J61/045 , C02F1/325 , C02F2303/04 , H01J61/20 , H01J61/24 , H01J61/33 , H01J61/72
Abstract: An ultraviolet mercury low-pressure amalgam lamp includes a tube having a first end and a second end, a first electrode placed in the first end of the tube, and a second electrode placed in the second end of the tube, whereby when the lamp is energized a discharge path is formed between the first and second electrodes. At least one amalgam deposit is adjacent to one of the first and second electrodes out of the discharge path between the first and second electrodes. The tube has at least one constriction, wherein the at least one amalgam deposit is placed behind the constriction with respect to the discharge path such that the at least one amalgam deposit is protected by the constriction from the heat emitted by the electrodes.
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Patent Agency Ranking
公开(公告)号：US10366875B2
公开(公告)日：2019-07-30
申请号：US16076803
申请日：2017-01-27
Applicant: Xylem IP Management S.à r.l.
Inventor： Friedhelm Krüger , Peer Krüger , Sven Kämmerer
Abstract: A UV radiator unit includes an elongated gas discharge lamp with an essentially cylindrical UV transparent lamp body with sealed ends, which encloses a gas volume. The lamp body defines a longitudinal axis and has an outer diameter. A UV transparent sleeve tube with an inner diameter, which surrounds the lamp body and wherein the inner diameter is larger than the outer diameter of the lamp body. At least one damping ring is interposed between the lamp body and the sleeve tube. The damping ring includes a first side element, a second side element and at least one connecting portion. An axial distance is provided between the first side element and the second side element. The at least one connecting portion physically connects the first side element and the second side element.
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公开(公告)号：US20190154047A1
公开(公告)日：2019-05-23
申请号：US16301841
申请日：2017-05-10
Applicant: Xylem IP Management S.à r.l.
Inventor： Stefan Bergh
IPC: F04D29/042 , F04D15/00 , F04D13/08 , F04D7/04 , F16D1/097
Abstract: A pump for pumping a liquid, includes an impeller and an axially extending drive shaft assembly, wherein a distal end of the drive shaft assembly is received in a central recess of the impeller. The drive shaft assembly includes a drive shaft and a connector. The connector includes a sleeve that is in telescopic engagement with the drive shaft. During operation of the pump the impeller is displaceable in the axial direction in relation to the sleeve between a distal rest position and a proximal position. The impeller is biased towards the distal rest position by a spring member arranged between the sleeve and the impeller. The connector includes a hollow adjustment screw that is in threaded engagement with an interior side of the sleeve to limit the maximum degree of telescopic overlap between the sleeve and the drive shaft
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公开(公告)号：US10287182B2
公开(公告)日：2019-05-14
申请号：US15329822
申请日：2015-05-12
Applicant: XYLEM IP MANAGEMENT S.À R.L.
Inventor： Achim Ried , Arne Wieland , Ivan Zhu
IPC: C02F3/00 , C02F1/00 , C02F1/78 , C02F3/06 , C02F101/30
Abstract: Method for controlling a water treatment installation having a supply, an ozonization stage, a transfer stage, a biological filter and a discharge having the following steps: measuring a first parameter set in the supply, wherein, a measurement for a first concentration of micro-contaminations and/or a nitrite concentration is determined; controlling the ozonization stage in such a manner that an ozone supply is carried out in a preselected ratio to the measured first parameter set; measuring a second parameter set in the transfer stage, wherein, a measurement for a second concentration of micro-contaminations is determined; controlling the ozonization; measuring a third parameter set in the discharge, wherein, with reference to the third parameter set, a measurement of a third concentration of micro-contaminations is determined; if the measurement for the concentration of micro-contaminations exceeds a predetermined maximum value in the discharge, increasing the ozone supply.
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公开(公告)号：US20190019665A1
公开(公告)日：2019-01-17
申请号：US16076803
申请日：2017-01-27
Applicant: Xylem IP Management S.à r.l.
Inventor： Friedhelm Krüger , Peer Krüger , Sven Kämmerer
Abstract: A UV radiator unit includes an elongated gas discharge lamp with an essentially cylindrical UV transparent lamp body with sealed ends, which encloses a gas volume. The lamp body defines a longitudinal axis and has an outer diameter. A UV transparent sleeve tube with an inner diameter, which surrounds the lamp body and wherein the inner diameter is larger than the outer diameter of the lamp body. At least one damping ring is interposed between the lamp body and the sleeve tube. The damping ring includes a first side element, a second side element and at least one connecting portion. An axial distance is provided between the first side element and the second side element. The at least one connecting portion physically connects the first side element and the second side element.
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公开(公告)号：US11255333B2
公开(公告)日：2022-02-22
申请号：US16302209
申请日：2017-05-10
Applicant: Xylem IP Management S.à r.l.
Inventor： Zhiyong Zhong
Abstract: A method for stopping a submersible pump when the pump is snoring, wherein the pump is operatively connected to a control unit. The method includes regulating, by way of the control unit, the operational speed of the pump in order to direct an average power of the pump towards a predetermined set level. The method includes determining whether the instantaneous power of the pump is outside a predetermined range, by monitoring at least one of the parameters: power [P], current [I] and power factor [cos ϕ].The method further includes determining whether the operational speed of the pump is increasing, and stopping the pump due to snoring, by way of the control unit, when the instantaneous power of the pump is determined as being outside the predetermined range at the same time the operational speed of the pump is determined as increasing.
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