Patents Assigned to GRUNDFOS HOLDING A/S
  • Sensor assembly
    Patent number: 10288457
    Abstract: A sensor arrangement includes a sensor which is arranged in a housing constructed of two plastic injection molded parts (2, 3). The electrical leads are sealingly led through the housing (1) and are sealed by way of O-rings which on the one hand bear in a groove of the lead and on the other hand bear in a recess forming the housing feed-through.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: May 14, 2019
    Assignee: Grundfos Holding A/S
    Inventors: Kjeld Vinther Jacobsen, John B. Jacobsen, Mikkel Haugaard
  • Centrifugal pump
    Patent number: 10274093
    Abstract: The multi-stage submersible pump at the exit side is provided with a non-return valve (9) including a valve seat (19) and a shut-off body (15) which is movably arranged thereto in a limited manner and which is arranged with a positive fit and in a movable manner within a guide (16) surrounding the shut-off body (15) with play. The inner contour of the guide (16) tapers inwards towards the valve seat (19), counter to the main flow direction (13).
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: April 30, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Thomas Sørensen, Daniel Høpfner
  • Pump assembly
    Patent number: 10273959
    Abstract: A pump assembly has an electric drive motor which is designed as a canned motor which has a bearing (22) in the interior of motor can (14), on which a motor shaft (20) is supported. The bearing (22) has an outer diameter that is smaller than an inside diameter of the motor can (14) and the bearing (22) in the interior of the motor can (14) is supported on a bearing holder (24) which has multiple steps (40) extending traversely to an inner circumference of the motor can (14).
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: April 30, 2019
    Assignee: Grundfos Holding a/s
    Inventor: Kåre Iversen
  • Rotor for an electric motor
    Patent number: 10256679
    Abstract: The rotor for an electric motor includes a central rotor shaft (2) and a permanent-magnetic rotor body fastened on the rotor shaft. The rotor body is provided with a casing (8) which is radially distanced to the rotor shaft (2). A first annular space, which is adjacent the casing (8) and which is molded out with a plastic (10) at least partly containing magnet particles, is formed between the rotor shaft (2) and the casing (8).
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: April 9, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventor: Martin Vestermark Vad
  • Centrifugal pump
    Patent number: 10247202
    Abstract: A centrifugal pump (1) includes at least one pump stage (2) and a first housing part (3) having a suction connection (5). A second housing part (6) has a pressure connection (7). At least one intermediate housing part (10) at least in sections delimits a channel (11) leading to a pressure side of the at least one pump stage (2). The pump further includes a third housing part (20). The second housing part (6) and the at least one intermediate housing part (10) are arranged between the first and the third housing part (3, 20). The at least one intermediate housing part (10) and the second housing part (6) are configured to be arranged in at least two different positions with respect to the first and the third housing (3, 20).
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: April 2, 2019
    Assignee: Grundfos Holding a/s
    Inventor: Steen Mikkelsen
  • Motor housing with electronic housing both having vertical partial cooling ribs for wet-running motor for a centrifugal pump
    Patent number: 10243425
    Abstract: An electric motor includes a motor housing (5) which includes cooling ribs (15) on the peripheral side leading away heat arising in the motor. The cooling ribs (15) only extend over a part of the periphery of the motor housing (5), so that cooling ribs (21) of the electronics housing (13) have space in the cooling-rib-free part of the motor housing (5). The cooling ribs (21) of the electronics housing (13) are arranged aligned with the cooling ribs (15) of the motor transversely to a motor axis (14).
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: March 26, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Knud Jørgen Saaby Mikkelsen, Bjørn Breitzke, Steen Heelund
  • Wet electric motor and pumping set
    Patent number: 10236731
    Abstract: A wet electric motor for a pump includes a stator casing, a stator arranged in the stator casing, and a can, wherein first resilient pressure elements are arranged inside the stator casing in such a way as to exert a compressive force in the direction of the can on at least parts of the stator, as well as to a pumping set with such a wet electric motor.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: March 19, 2019
    Assignee: Grundfos Holding a/s
    Inventor: Georg Blaser
  • Sensor assembly
    Patent number: 10184812
    Abstract: A sensor arrangement includes at least one sensor (7) as well as a housing (1) constructed of at least two plastic injection molded parts (2, 3), and a sensor electronics which are located on the circuit board (5) and which is secured by this housing. At least one absorption body (4) is provided within the housing (1) and is designed as a plastic injection molded part and serves for absorbing fluid which could get into the housing by diffusion.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: January 22, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Kjeld Winther Jacobsen, John B. Jacobsen, Mikkel Haugaard
  • Method for limiting a supply flow in a heat transfer system
    Patent number: 10184671
    Abstract: A method and a heat transfer system for limiting a supply flow (qS) in a heat transfer system which includes a supply conduit (10) with a supply flow (qS) and with a supply entry temperature (TS), and at least one load circuit (2) with a load pump (20) which provides a load flow (qL) with a load entry temperature (TL) and a load exit temperature (TR). The load entry temperature (TL) is set by way of changing the supply flow (qS), wherein the supply flow (qS) is limited to a maximal flow (qS, max), taking into account at least one temperature detected in the load circuit (2).
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: January 22, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Carsten Skovmose Kallesøe, Brian Kongsgaard Nielsen
  • Mixing valve
    Patent number: 10184574
    Abstract: A heating or cooling installation control valve includes a movable valve element which is arranged in a valve space (8), as well as at least two connection channels (24, 26) which each have a first end in fluidic connection with the valve space (8) and have an opposite second end (A, B) for connection to a fluid-leading component. A sealing element (18) is arranged in at least one of the connection channels (24, 26) at a first end thereof. The sealing element is in contact with the valve element (6). The at least one connection channel (24, 26), in which the sealing element (18) is arranged, in addition to the second end (A, B), includes an assembly opening, through which the sealing element (18) can be inserted into the connection channel (24) and removed from of the connection channel (24).
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: January 22, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Kåre Iversen, Torben Heilskov Overgaard
  • Stator arrangement
    Patent number: 10141806
    Abstract: A stator arrangement for an electrical motor has several windings (28) which are arranged on a winding carrier (26) of plastic. A groove (32) extends in the peripheral direction and is open to the axial end-side and in which at least one electrical conductor (30) electrically connecting two of the windings (28) is arranged. The groove (32) is formed on at least one axial end-side (20) of the winding carrier (26). An electric motor including the stator arrangement as a pump assembly with such a stator arrangement are also provided.
    Type: Grant
    Filed: May 27, 2013
    Date of Patent: November 27, 2018
    Assignee: GRUNDFOS HOLDING A/S
    Inventor: Lars Toft Stampe
  • Electronic converter unit for a pump and a method for communicating with the electronic converter unit
    Patent number: 10132508
    Abstract: An electronic converter unit (30, 86, 87) for being arranged external to a pump unit (10) is described. The pump unit (10) includes a housing (12), which comprises a signal source (16, 18) for emitting a signal. The electronic converter unit (30, 86, 87) comprises a signal detector (40) for measuring the signal emitted from the signal source (18) of the pump unit (10). The electronic converter unit (30) further comprises a converter unit (41) for converting said signals to electrical signals, and transmitting means (42) for transmitting the electrical signals to an external communication unit (50). The electronic converter unit (30, 86, 87) is further configured to operate in a signal converter mode (30) and a signal repeater mode (86, 87).
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: November 20, 2018
    Assignee: Grundfos Holding A/S
    Inventors: Karsten Frilev, Simon Mølgaard Møller, Rose Kampmann
  • Hydraulic valve
    Patent number: 10119629
    Abstract: A hydraulic valve includes a valve housing (4) with an inside that defines at least one first flow path (7), and with a valve insert (16) which is arranged in the inside of the valve housing (4). The valve insert (16) includes a movable valve element (14) situated in the first flow path (7). An infrared temperature sensor (46) is arranged on or in the valve housing (4) and is directed onto a surface of the valve insert (16) or a surface of a thermal conductor (48) connected to the valve insert. A hydraulic manifold may be provided with such a hydraulic valve.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: November 6, 2018
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Søren Emil Sørensen, Per Hovmand, Steen Mikkelsen, Jens Kjær Milthers, Kim Hulegaard Jensen, Jan Carøe Aarestrup
  • Pump assembly with a terminal box having a metallic contact collecting condensation with a drain channel
    Patent number: 10116183
    Abstract: A pump assembly includes an electric drive motor with a terminal box (6) arranged on the electric motor (4). At least one metallic component (34) extends from the electric drive motor (4) into an inside of the terminal box (6). A capture device (38, 40), for capturing condensation water collecting on the metallic component (34), is arranged in a proximity of the metallic component (34) in the inside the terminal box (6).
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: October 30, 2018
    Assignee: GRUNDFOS HOLDING A/S
    Inventor: John B. Jacobsen
  • Multi-stage centrifugal pump
    Patent number: 10094385
    Abstract: A multistage centrifugal pump includes a foot part (1) and a head part (7), between which several pump stages are arranged. Each of the pump stages includes an impeller (4) and a housing (5) surrounding the impeller (4). The housings (5) are arranged over one another. The housings (5) together with an outer casing (9) form an annular channel (8). The housings (5) together with an outer casing (9) are clamped via clamping bolts (11) which are fastened on the head part (7) and the foot part (1). The clamping bolts (11) are arranged within the annular channel (8).
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: October 9, 2018
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Steen Mikkelsen, Carl-Christian Danielsen
  • Centrifugal pump
    Patent number: 10082155
    Abstract: The centrifugal pump (1) includes several pump stages which are arranged axially between a head part (4) and a foot part (2). An outer casing (3) peripherally surrounds the pump stages. An axial end of the outer casing (3) is fastened on the head part and the other axial end of the outer casing (3) is fastened on the foot part. A mechanical connection between the head part (4) and the foot part (2) is formed by the outer casing (3).
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: September 25, 2018
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Steen Mikkelsen, Brian Lundsted Poulsen
  • Power converter
    Patent number: 10079528
    Abstract: A frequency converter includes an enclosure, in which electrical and electronic components (5, 6, 7, 22) are arranged and which at least partly is designed as a Faraday cage. At least two Faraday cages (4, 9, 15, 29) are provided within the enclosure, in order to improve the electromagnetic compatibility (EMC).
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: September 18, 2018
    Assignee: GRUNDFOS HOLDING A/S
    Inventor: Christian Wolf
  • Method for detecting the flow rate value of a centrifugal pump
    Patent number: 10041824
    Abstract: A method serves for detecting the flow rate of a centrifugal pump, wherein the rotation speed of the pump or of the motor driving the pump, a hydraulic variable of the pump, typically the delivery pressure and an electrical variable of the drive motor, for example the electrical power are determined, and the flow rate is evaluated by way of these variables. For this, variables dependent on the flow rate are determined by way of a mathematic linking of terms of equations describing physical relations of the pump and drive motor, wherein one term contains the rotation speed of the pump and a hydraulic variable of the pump and another term contains an electric or mechanical variable of the drive motor of the pump and the rotation speed of the pump. The flow rate is determined by way of the functional relation between the flow rate and the dependent variable.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: August 7, 2018
    Assignee: GRUNDFOS HOLDING A/S
    Inventor: Carsten Skovmose Kallesøe
  • Housing
    Patent number: D833483
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: November 13, 2018
    Assignee: GRUNDFOS HOLDING A/S
    Inventor: Morten Sofussen
  • Housing
    Patent number: D837832
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: January 8, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventor: Morten Sofussen