Patents by Inventor Jan Carøe Aarestrup
Jan Carøe Aarestrup has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20180335038Abstract: A pump assembly (1) includes a pump unit (2) with an impeller (12) having a rotational axis (R), an electrical drive motor for driving the impeller (12), and a control unit for controlling the drive motor. The control unit includes a main module in a housing (15), a first detachable plug-in module (23) and a second detachable plug-in module (27). The main module is fixed to the drive motor and configured to control the drive motor. The first plug-in module (23) and the second plug-in module (27) are selectively pluggable into a first position to communicate with the main module via at least one wireless communication channel.Type: ApplicationFiled: May 18, 2018Publication date: November 22, 2018Inventors: Klaus VESTERGAARD KRAGELUND, Jan PLOUGMANN, Jan CARØE AARESTRUP
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Patent number: 10119629Abstract: 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: GrantFiled: March 10, 2016Date of Patent: November 6, 2018Assignee: GRUNDFOS HOLDING A/SInventors: Søren Emil Sørensen, Per Hovmand, Steen Mikkelsen, Jens Kjær Milthers, Kim Hulegaard Jensen, Jan Carøe Aarestrup
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Publication number: 20180283382Abstract: A pump assembly (1) includes an impeller with a rotor axis (R). A pump housing (11) accommodates the impeller. A drive motor with a stator (14) and a rotor (51) drives the impeller (12). A rotor can (57) accommodates the rotor (51), and a stator housing (13) accommodating the stator (14). The rotor can (57) is mounted by a first coupling to the pump housing (11). The stator housing (13) is mounted by a second coupling to the pump housing (11). The first coupling is located closer to the rotor axis (R) than the second coupling.Type: ApplicationFiled: March 29, 2018Publication date: October 4, 2018Inventors: Klaus VESTERGAARD KRAGELUND, Jan PLOUGMANN, Jan CARØE AARESTRUP
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Publication number: 20180287542Abstract: A pump assembly (1) includes a pump unit (2), an electrical drive motor (203) for driving the pump unit (2), and a control unit (201) for controlling the drive motor (203). The control unit (201) includes a frequency converter (209), a voltage converter (207) and a controller (211). The voltage converter (207) is configured to provide an input voltage (Uin) to the frequency converter (209). The input voltage (Uin) is adjustable within a voltage range between a minimum input voltage (Umin) and a maximum input voltage (Umax). The controller (211) is configured to determine an actual power consumption of at least one of the drive motor (203), the frequency converter (209) and the voltage converter (207) during operation of the pump unit (2). The controller (211) is further configured to tune the input voltage (Uin) depending on the determined actual power consumption during operation of the pump unit (2).Type: ApplicationFiled: March 28, 2018Publication date: October 4, 2018Inventors: Klaus VESTERGAARD KRAGELUND, Jan PLOUGMANN, Jan CARØE AARESTRUP
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Publication number: 20180283383Abstract: A pump assembly (1) includes an impeller (12) with a rotor axis (R), a pump housing (11) accommodating the impeller (12), a drive motor with a stator (14) and a rotor (51) for driving the impeller (12). A rotor can (57) accommodates the rotor (51), and a stator housing (13) accommodates the stator (14). The rotor can (57) includes a rotor can flange (63) having a lateral rotor can flange face (87) fitting within a peripheral wall (69) of the pump housing (11). The lateral rotor can flange face (87) has at least three radial projections (91) abutting against the peripheral wall (69) of the pump housing (11) and centering the rotor can (57) with respect to the peripheral wall (69) of the pump housing (11).Type: ApplicationFiled: March 29, 2018Publication date: October 4, 2018Inventors: Klaus VESTERGAARD KRAGELUND, Jan PLOUGMANN, Jan CARØE AARESTRUP
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Publication number: 20180287539Abstract: A pump assembly (1) includes a pump unit (2) capable of providing a desired head (H0) at zero flow rate, a brushless speed-controlled permanent-magnet AC drive motor (205) for driving the pump unit (2), and a control unit for controlling the drive motor (205). The control unit includes a frequency converter configured to receive an input voltage (Uin). The drive motor (205) is operable in a field-weakening mode and non-field-weakening mode. The drive motor (205) is undersized for driving the pump unit (2) at a design input voltage (U0) to provide a lower head (H) than the desired head (H0) at zero flow rate in the non-field-weakening mode and for driving the pump unit (2) to provide the desired head (H0) at zero flow rate in the field-weakening mode.Type: ApplicationFiled: March 28, 2018Publication date: October 4, 2018Inventors: Klaus VESTERGAARD KRAGELUND, Jan PLOUGMANN, Jan CARØE AARESTRUP
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Patent number: 9982675Abstract: A method for controlling the power limit of a pump device includes controlling the power limit of the pump device on the basis of a pump media temperature Tm and an ambient temperature Ta measured inside a control box of the pump device. A pump device, in particular a centrifugal pump, is driven by a motor. The motor is controlled by a control box wherein temperature sensors for measuring a media temperature Tm and an ambient temperature Ta are arranged in the control box so as to control the power limit of the pump device depending on the measured media temperature Tm and an ambient temperature Ta.Type: GrantFiled: September 30, 2014Date of Patent: May 29, 2018Assignee: GRUNDFOS HOLDING A/SInventors: Kim Hulegaard Jensen, Lars Sund Mortensen, Jan Carøe Aarestrup
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Publication number: 20170248142Abstract: 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) contactless 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.Type: ApplicationFiled: October 15, 2014Publication date: August 31, 2017Inventors: Flemming MUNK, Casper Lyngesen MOGENSEN, Jan Carøe AARESTRUP
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Publication number: 20170241422Abstract: 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.Type: ApplicationFiled: October 14, 2015Publication date: August 24, 2017Inventors: Flemming MUNK, Casper Lyngesen MOGENSEN, Jan Carøe AARESTRUP
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Publication number: 20170182439Abstract: a filtering method, with which a fluid to be filtered is led through a filter (4), the filter (4) is back-flushed at regular time intervals and a pre-treatment agent is added to the fluid at the entry side of the filter. A process variable which describes the efficiency of the filtration is continuously computed during the filtration, and a metering quantity of the pre-treatment agent is reset on the basis of the values for the process variable or a characteristic values derived from this.Type: ApplicationFiled: December 28, 2016Publication date: June 29, 2017Inventors: Dominik DOMINIAK, Rikke Eriksen GISSEL, Jacob Appelt Vibe SVENDSEN, Xing ZHENG, Jan Carøe AARESTRUP
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Publication number: 20170175749Abstract: A centrifugal pump includes at least one pump stage (14). This pump stage (14) includes an impeller (18) which is mounted rotationally fixed on a pump shaft (26). Apart from the pump stage (14), the centrifugal pump is equipped with a turbine wheel (32) which is arranged on the pump shaft (26), without a movement coupling to the pump shaft, in the delivery flow of the centrifugal pump. This turbine wheel (32) forms a transducer of a flow measuring device. A blading of the turbine wheel (32) is such that a torque exerted by the delivery flow onto the turbine wheel (32?) is directed counter to a torque exerted via the pump shaft (26) onto the impeller (18).Type: ApplicationFiled: December 20, 2016Publication date: June 22, 2017Inventors: Erik Bundesen SVARRE, Jan Carøe AARESTRUP, Peter ELVEKJÆR, Flemming MUNK
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Publication number: 20160265689Abstract: 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: ApplicationFiled: March 10, 2016Publication date: September 15, 2016Inventors: Søren Emil SØRENSEN, Per HOVMAND, Steen MIKKELSEN, Jens Kjær MILTHERS, Kim Hulegaard JENSEN, Jan Carøe AARESTRUP
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Patent number: 9388813Abstract: A method for determining the functional relationship of several pumps which are controllable in their rotational speed, in a hydraulic installation. At least one pump is activated with a changed rotational speed, and at least one functional relationship of the installation is determined from the hydraulic reactions. With a suitable selection of the control and detection of the hydraulic changes, one may determine the functional relationship of the complete installation.Type: GrantFiled: January 19, 2011Date of Patent: July 12, 2016Assignee: Grundfos Management a/sInventors: Carsten Skovmose Kallesøe, Jan Carøe Aarestrup
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Publication number: 20150093253Abstract: A method for controlling the power limit of a pump device includes controlling the power limit of the pump device on the basis of a pump media temperature Tm and an ambient temperature Ta measured inside a control box of the pump device. A pump device, in particular a centrifugal pump, is driven by a motor. The motor is controlled by a control box wherein temperature sensors for measuring a media temperature Tm and an ambient temperature Ta are arranged in the control box so as to control the power limit of the pump device depending on the measured media temperature Tm and an ambient temperature Ta.Type: ApplicationFiled: September 30, 2014Publication date: April 2, 2015Inventors: Kim Hulegaard JENSEN, Lars Sund MORTENSEN, Jan Carøe AARESTRUP
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Publication number: 20110176933Abstract: A method for determining the functional relationship of several pumps which are controllable in their rotational speed, in a hydraulic installation. At least one pump is activated with a changed rotational speed, and at least one functional relationship of the installation is determined from the hydraulic reactions. With a suitable selection of the control and detection of the hydraulic changes, one may determine the functional relationship of the complete installation.Type: ApplicationFiled: January 19, 2011Publication date: July 21, 2011Applicant: GRUNDFOS MANAGEMENT A/SInventors: Carsten Skovmose KALLESØE, Jan Carøe AARESTRUP
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Patent number: 6380707Abstract: The brushless electric motor (M) is provided with switching means (Q1-Q6) for selectively supplying current to the armature windings (U, V, W) of the motor (M) from a DC-power supply (1) The switching means (Q1-Q6) are controlled by measuring the back-electromotive forces developed in the windings (U, V, W) during operation and comparing these measurements with a high and low reference voltage, in such a way that each time a measured back-electromotive force with positive slope crosses the high reference voltage or a measured back-electromotive force with negative slope crosses the low reference voltage, a commutation signal is generated to commutate the switching means (Q1-Q6), this provides a highly simplified control of the switching means.Type: GrantFiled: August 24, 2001Date of Patent: April 30, 2002Assignee: Danfoss Compressors GmbHInventors: Jesper Riber Rosholm, Jan Carøe Aarestrup
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Patent number: 6373728Abstract: The frequency converter is provided for an electric motor and comprises a rectifier, an intermediate circuit and an inverse rectifier which are connected with respect to circuiting technology via a control and regulation circuit. In the inverse rectifier to each motor phase there are allocated at least two electronic switches, one for the side conducting the higher potential and one for the side conducting the low potential. The intermediate circuit is formed as an active intermediate circuit and contains a Buck-Booster converter. It is controlled such that the voltage at the output of the intermediate circuit with respect to magnitude is always smaller than that at the input. By way of this inexpensive components may be used in the inverse rectifier and in particular also in the control and regulation circuit.Type: GrantFiled: September 27, 2000Date of Patent: April 16, 2002Assignee: Grundfos A/SInventor: Jan Carøe Aarestrup