公开(公告)号：US09910002B2

公开(公告)日：2018-03-06

申请号：US14483353

申请日：2014-09-11

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming Munk

IPC: G01R27/08 ,  G01N27/06 ,  F04D15/02 ,  G01N29/032

CPC classification number: G01N27/06 ,  F04D15/0218 ,  G01N29/032

Abstract: The dry running detection system for a pump includes an ultrasonic transducer (8) designed for arrangement inside a pump housing (24) and electrically connected to a frequency generator (2) producing an electrical signal having a predefined frequency. An analyzing unit (10) of the system analyzes the electrical signal applied to the ultrasonic transducer (8) and is designed to detect whether the ultrasonic transducer (8) is in contact with a liquid or not on basis of the signal level of the electrical signal.

公开(公告)号：US20170368485A1

公开(公告)日：2017-12-28

申请号：US15540206

申请日：2015-12-29

Applicant: Grundfos Holding A/S

Inventor： Tom Jæger ,  Dominik Marek Dominiak ,  Christian Schou ,  Marcel Gausmann

IPC: B01D37/02 ,  C02F3/12 ,  C02F1/00 ,  C02F11/12 ,  C02F3/28

CPC classification number: B01D37/02 ,  C02F1/001 ,  C02F3/12 ,  C02F3/121 ,  C02F3/1221 ,  C02F3/286 ,  C02F11/04 ,  C02F11/121 ,  C02F2101/30 ,  C02F2209/03 ,  C02F2303/20 ,  Y02E50/343 ,  Y02W10/15

Abstract: The present invention relates to a water treatment system comprising a pre-filtering device receiving water, such as waste water, to be treated and providing a filtrate, and a biological treatment device being fluidic connectable to or in fluidic connection with the pre-filtering device for receiving the filtrate from the pre-filtering device. The biological treatment device is adapted to perform a biological treatment of the filtrate and to provide sludge solids. The pre-filtering device is a cake filtration device having a filtration cake wherein the filtration cake is being provided by deposition of solids from the sludge formed in the biological treatment device. A water treatment process employing the system and a method of forming a filter cake are also described.

公开(公告)号：US20170356834A1

公开(公告)日：2017-12-14

申请号：US15538430

申请日：2015-11-30

Applicant: Grundfos Holding A/S

Inventor： Kåre IVERSEN ,  Christian GULDBÆK SMITH ,  Mathis DAHLQVIST

IPC: G01N15/02 ,  G06K9/00 ,  G01N21/958 ,  G01N33/18 ,  G06K9/40 ,  G01N15/14 ,  G01N21/88 ,  G01N21/15 ,  G01N15/00

CPC classification number: G01N15/0227 ,  G01N15/1463 ,  G01N15/1475 ,  G01N21/15 ,  G01N21/85 ,  G01N21/8851 ,  G01N21/94 ,  G01N21/958 ,  G01N33/1893 ,  G01N2015/0088 ,  G01N2015/1493 ,  G01N2021/157 ,  G01N2021/8887 ,  G06K9/0014 ,  G06K9/40

Abstract: A method for the quantitative and/or qualitative detection of particles in fluid, with which the fluid to be examined is introduced into a beam path of an optical device, between at least one light source and the image acquisition sensor with a matrix of light-sensitive cells. Pixel values of the cells are detected and the distribution of the pixel values is at least partly determined. The pixel value or values which have been determined most often are used as a value or average value for a background signal. A signal is outputted or the method is interrupted, on reaching a maximal permissible value for the background signal.

公开(公告)号：US20170350800A1

公开(公告)日：2017-12-07

申请号：US15540675

申请日：2015-12-09

Applicant: Grundfos Holding A/S

Inventor： Mathis DAHLQVIST ,  Christian SMITH ,  Bo HØJRIS

IPC: G01N15/02 ,  G01N15/14 ,  G06N3/04 ,  G01N21/49 ,  G01N21/88

CPC classification number: G01N15/0211 ,  G01N15/1434 ,  G01N15/1475 ,  G01N21/49 ,  G01N21/8806 ,  G01N2015/0222 ,  G01N2015/0238 ,  G01N2015/0294 ,  G01N2015/144 ,  G01N2015/1445 ,  G01N2015/1472 ,  G01N2021/8822 ,  G02B21/10 ,  G02B21/365 ,  G06N3/0463

Abstract: A method serves for determining particles (3), in particular bacteria in fluid and operates using an imaging optical device with a light source (1), with an optical sensor (4) with a field of light-sensitive pixels and with a fluid sample, which is to be examined, arranged between the light source (1) and the sensor (4). Characteristics of at least one particle (3), which is detected with regard to imaging, are compared to characteristics of a characteristics collection for determining the detected particle (3). The image acquisition is effected with darkfield technology and a light-sensitive pixel comprises several subpixels which are used for image acquisition.

公开(公告)号：US20170324298A1

公开(公告)日：2017-11-09

申请号：US15581096

申请日：2017-04-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Pino BRÖSAMLE ,  Georg BLASER

IPC: H02K5/22 ,  H02K5/10 ,  F04D29/40 ,  F04D13/06 ,  H02K15/14 ,  H02K11/33 ,  F04D29/18

Abstract: A circulation pump assembly, with a wet-running electrical drive motor (4), includes a pump casing (6) as well as a motor housing (22) which is connected to the pump casing (6). The motor housing (22) is a combined stator and electronics housing that accommodates a stator (18) of the drive motor (4) as well as motor electronics (34). The motor housing (22), at a first axial end (24) facing the pump casing (6), is closed by an air gap sleeve (16) of the drive motor. The motor housing (22), at a second axial end (26) which is away from the pump casing (6), includes an opening (42) closed by a cover (28). An interior of the motor housing (22), in a region adjacent the first axial end (24), is filled with a potting mass (40) surrounding the stator (18) and the motor electronics (34).

公开(公告)号：US20170241422A1

公开(公告)日：2017-08-24

申请号：US15519713

申请日：2015-10-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Flemming MUNK ,  Casper Lyngesen MOGENSEN ,  Jan Carøe AARESTRUP

IPC: F04D15/00 ,  F04D13/06 ,  G01H17/00

CPC classification number: F04D15/0088 ,  F04D13/06 ,  F04D15/0077 ,  F04D29/043 ,  F04D29/046 ,  F04D29/669 ,  F05D2260/80 ,  G01H17/00 ,  G01M99/008

Abstract: A method for detecting faults or operational parameters in a pump assembly by use of a handheld communication device is described. The pump assembly includes an electric motor and a pump, wherein the pump assembly or electric motor has at least one rotating shaft The method comprises the steps of: a) measuring a sound signal emanating from the pump assembly by use of a microphone connected to or implemented in the handheld communication device, b) processing the measured sound signal, and c) recognising one or more sound emanating condition including any possible faults by way of the processed sound signal. The app automatically repeats at least steps b) and c) for a plurality of preselected frequency ranges in order to detect different fault states.

公开(公告)号：US09712017B2

公开(公告)日：2017-07-18

申请号：US14367529

申请日：2012-12-20

Applicant: Grundfos Holding a/s

Inventor： Morten Sofussen

IPC: H02K5/22 ,  H02K11/00 ,  F04D13/06 ,  H02K11/33

CPC classification number: H02K5/225 ,  F04D13/0686 ,  H02K11/33

Abstract: An electric drive motor (4), in particular for a pump assembly, has a terminal box (8) arranged on the electric drive motor (4). The terminal box (8) includes a first section (10) arranged at an axial end (6) of the drive motor (4) and a second section (14) arranged radially to the first section (10). The second section (14) is radially spaced from the first section (10) and in the tangential direction has a width (b) which is larger than a diameter (d) of the first section in this direction. The second section (14) is connected to the first section (10) via a connection section (16) having two side walls which are away for one another. These two side walls extend from the second section (14) to the first section (10) and are angled to one another, such that they approach one another towards the first section (10).

公开(公告)号：US20170122326A1

公开(公告)日：2017-05-04

申请号：US15341362

申请日：2016-11-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Mathis DAHLQVIST ,  Christian Guldbæk SMITH ,  Kåre IVERSEN

IPC: F04D15/00 ,  F04D13/06 ,  F04D27/00 ,  F04D1/00

CPC classification number: F04D15/0066 ,  C02F1/008 ,  C02F1/307 ,  C02F1/32 ,  C02F1/36 ,  C02F1/38 ,  C02F2209/001 ,  C02F2209/005 ,  C02F2209/03 ,  C02F2209/105 ,  C02F2301/043 ,  C02F2307/00 ,  E03B5/00 ,  F04D1/00 ,  F04D13/06 ,  F04D15/0088 ,  F04D15/0209 ,  F04D15/0281 ,  G01N33/1893 ,  G01N2001/2064 ,  G01N2015/0053 ,  G01N2015/0088 ,  G01N2015/0693

Abstract: A centrifugal pump assembly includes an electric motor (2) driving a centrifugal pump (1) and includes an electronics casing (8). In the electronics casing (8), the control electronics (10, 11) for the pump and motor are integrated. A device for detecting particles in a fluid fed via a bypass (6, 7) of a delivery conduit (3) is also in the electronics casing (8).

公开(公告)号：US20170108882A1

公开(公告)日：2017-04-20

申请号：US15293768

申请日：2016-10-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Torben Thorsager DISSING

IPC: G05D16/20

CPC classification number: G05D16/2066 ,  F04D15/0209

Abstract: A pump control method for controlling at least one booster pump (4). The method includes switching on the booster pump when a booster pump outlet pressure (24) drops to a lower limit value (26), and switching off the booster pump when the booster pump outlet pressure (24) reaches an upper limit value (28). The lower limit value (26) is reduced in a case, in which the maximal outlet pressure (24a) which can be reached on operation of the booster pump (4) lies below the lower limit value (26). A pressure-boosting device is also provided with which the pump control method can be carried out.

公开(公告)号：US20170108135A1

公开(公告)日：2017-04-20

申请号：US15293942

申请日：2016-10-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Janus Lukas SIERAKOWSKI-LARSEN

IPC: F16K27/02 ,  F04D29/42 ,  F04D29/22 ,  F16K15/06 ,  F04D13/06

Abstract: A non-return valve (19) for a water supply system (1) or a pump (4) is integrated in a flow channel (14) of the water supply system (1). The non-return valve (19) includes a sealing body (21) which is mounted within the channel (14), blocks the channel (14) in a first position forming the closure position and releases the channel (14) in a second position forming the opened position. The sealing body (21) is movably arranged on a holder (31) which includes a closure body (15), with which the holder (31) is releasably fastened in a housing opening.