In Response To Pump Speed Patents (Class 417/42)
  • Patent number: 10851774
    Abstract: A controller for operating a rod pumping unit at a pump speed. The controller includes a processor configured to operate a pump piston of the rod pumping unit at a first speed. The processor is further configured to determine a pump fillage level for a pump stroke based on a position signal and a load signal. The processor is further configured to reduce the pump speed to a second speed based on the pump fillage level for the pump stroke.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: December 1, 2020
    Assignee: Ravdos Holdings Inc.
    Inventors: Omar Al Assad, Rogier Sebastiaan Blom, Gary Hughes, Justin Edwin Barton, Peter Westerkamp
  • Patent number: 10815987
    Abstract: Protecting a hydrocarbon pump from excessive flow rates in a hydrocarbon fluid system comprising an electrical motor for driving the pump. For each of a plurality of gas volume fraction values of the hydrocarbon fluid, establishing a maximum torque limit for the pump by mapping the maximum allowable torque of the pump as a function of the differential pressure, thereby creating a plurality of maximum torque curves, each representing the maximum torque limit for a unique gas volume fraction value. Establishing a master maximum torque curve which represents the maximum torque limit for all gas volume fraction values. Monitoring the torque of the pump and the differential pressure across the pump. Based on the monitored differential pressure and using the master maximum torque curve, establishing a maximum allowable torque for the pump. Taking action if the monitored torque exceeds the established maximum allowable torque.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: October 27, 2020
    Assignee: FMC Kongsberg Subsea AS
    Inventors: Karen Todal, Helge Grøtterud
  • Patent number: 10781668
    Abstract: Providing power to a downhole-type tool includes positioning a downhole-type electric motor in a wellbore, electrically connecting a variable speed drive to the electric motor with three-phase conductors extending between the variable speed drive and the electric motor, where the variable speed drive controls and supplies power to the electric motor through the three-phase conductors, diverting at least a portion of a power supply from the three-phase conductors to a rectifier, and supplying, from the rectifier, the diverted portion of the power supply to at least one downhole-type tool proximate to the electric motor, the at least one downhole-type tool operable using the diverted portion of the power supply.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: September 22, 2020
    Assignee: Upwing Energy, LLC
    Inventor: Patrick McMullen
  • Patent number: 10697452
    Abstract: An oil pressure control device for a vehicle is configured such that, when switching from an oil pressure supply by means of a mechanical oil pump driven by a motor/generator to an oil pressure supply by means of an electric oil pump driven by a sub-motor, a supply ratio of oil supplied from the mechanical oil pump and a supply ratio of oil supplied from the electric oil pump, are adjusted based on an oil pressure difference between a first oil pressure and a second oil pressure, via first and second flapper valves. When the first oil pressure becomes less than or equal to a pump drive threshold, an increase in the second oil pressure is initiated, and the first oil pressure and the second oil pressure are made to match at a predetermined equilibrium oil pressure higher than a required line pressure.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: June 30, 2020
    Assignee: JATCO LTD
    Inventors: Yutaka Shimizu, Shusaku Katakura, Yusuke Ota, Youko Yoshioka, Yukiyoshi Inuta, Tomoyuki Koike
  • Patent number: 10540594
    Abstract: A system and method are provided. The system includes a feature calculator calculates features of a Pressure Volume diagram. The system further includes a pumpjack condition separator separates normal pumpjack conditions from abnormal pumpjack conditions using a hierarchical decision tree, the conditions being determined using the features. The system also includes a compound indicator generator generates a compound indicator when a predetermined number of at least one of features and conditions exceed respective thresholds. The system additionally includes an abnormal PV diagram indicator provides a user-perceptible indication that the PV diagram is abnormal when the compound indicator exceeds a compound indicator threshold.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: January 21, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Li Li, Wen Ting Mo, Ji Jiang Song, Chunhua Tian, Feng Juan Wang
  • Patent number: 10514040
    Abstract: A vacuum system includes a vacuum pump and an electric motor for driving the vacuum pump. A cooling arrangement cools the vacuum system. A control performs at least one of decreasing voltage and increasing frequency of a signal applied to the electric motor to decrease an amount of magnetic flux generated in the electric motor instead of decreasing the current applied to the electric motor to arrive at a desired torque generated by the electric motor in response to pumping requirements of the vacuum pump.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: December 24, 2019
    Assignee: Edwards Limited
    Inventors: James Alexander Haylock, Richard Lee Harkin, Ian Keech, Jian Li
  • Patent number: 10465495
    Abstract: A device for detecting temperatures of a rod on a well having a housing; a clamp to secure the housing to a post of the well; a thermal radiation sensor secured to the front end of the housing; a visual radiation sensor secured to the front end of the housing, the visual radiation sensor is vertically aligned with the thermal radiation sensor; a microcontroller system placed inside housing, the microcontroller system includes a microcontroller, a non-volatile memory, and a serial interface in electronic communication; a position device placed inside the housing; a wireless device placed inside the housing; output device placed in the interior cavity of the housing; the microcontroller is in electronic communication with the serial interface for communicating with the visible radiation sensor, the thermal radiation sensor, the output module, the wireless module, and the position module.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: November 5, 2019
    Assignee: Petrolog Automation, Inc
    Inventors: Cesar Augusto Chavez Rico, Carlos Andree Labrado Mendias
  • Patent number: 10408206
    Abstract: Methods and apparatus to determine parameters of a pumping unit for use with wells are disclosed. An example apparatus includes a housing and a processor positioned in the housing. The processor is to determine a first load on a polished rod of a pumping unit, to estimate a first torque of a motor of the pumping unit, and determine a first torque factor for the pumping unit. The processor is to, based on the first load, the first torque, and the first torque factor, determine a phase angle of a counterbalance of the pumping unit or a moment of the counterbalance.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: September 10, 2019
    Assignee: BRISTOL, INC.
    Inventor: Thomas Matthew Mills
  • Patent number: 10408205
    Abstract: A method and system for determining the pump fillage of a sucker rod pumping system using torque feedback when pumping wellbore fluids from the particular well on which the sucker rod pumping system is installed. During the pump stroke, a microprocessor samples torque of the pump's mechanical system at an associated horsehead position at regular intervals and once the stroke is completed the raw torque samples and associated horsehead positions are placed in an array, the array of raw torque samples and horsehead positions can be filtered by the microprocessor into a second filtered array and then converted by the microprocessor into a rotatum array (derivative of torque with respect to time) of one or both of the raw or filtered arrays and stored as a rotatum array. The down stroke portion of the rotatum array is then analyzed by the microprocessor to determine the horsehead position when the piston of the down hole pump encounters wellbore fluid in the well (pump fillage).
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: September 10, 2019
    Assignee: Schneider Electric Systems Canada Inc.
    Inventors: Zackery Sobin, Scott Guimond, James Redmond
  • Patent number: 10296016
    Abstract: This invention provides, in various embodiments, a variable frequency drive system for controlling a pump driven by a variable frequency electric motor, with the pump in fluid communication with a fluid system. The drive system of this invention improves the efficiency of the prior variable frequency drive systems by inserting into the memory of the variable frequency drive the maximum flow required for the particular flow system in which the pump is operating and adding an initial pump starting module that limits the initial starting flow rate from the pump to the desired maximum flow rate for the system, which is separately calculated.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: May 21, 2019
    Assignee: Taco, Inc.
    Inventors: Bryan Payne, Eugene Fina, Steven K. Sullivan, Keith M. Desrosiers
  • Patent number: 10197062
    Abstract: An aero-engine low pressure pump is provided for supplying fuel at a raised pressure to a high pressure pump. The low pressure pump has a pumping mechanism which raises the pressure of fuel flowing though the mechanism. The low pressure pump further has electrical motor which drives the pumping mechanism. The low pressure pump further has a variable frequency motor drive which supplies electrical power to the electrical motor. The variable frequency motor drive measures the electrical power supplied to the electrical motor. The low pressure pump further has a control unit which compares the measured electrical power to a reference power, and, when the measured electrical power is less than the reference power by a predetermined amount, controls the motor drive to increase the power supplied to the electrical motor thereby increasing the pressure rise produced by the pumping mechanism.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: February 5, 2019
    Assignee: ROLLS-ROYCE PLC
    Inventors: David Brookes, Martin K. Yates
  • Patent number: 10125772
    Abstract: The invention relates to a method of monitoring an impeller pump used in a medical application, wherein the structure-borne noise arising in the impeller pump is measured and this measured structure-borne noise is compared with a reference curve and/or with a limit value, wherein a signal is output as a sign for a disturbance of the operation of the impeller pump. The invention further relates to a blood treatment apparatus in which the aforesaid method is carried out.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: November 13, 2018
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Alexander Heide, Christoph Wiktor
  • Patent number: 9989063
    Abstract: A monitoring device for monitoring power consumption of a magnetic bearing vacuum pump rotatably driven by a motor and configured such that a rotor is magnetically levitated and supported by a magnetic bearing, comprises: a calculator configured to calculate the power consumption of the magnetic bearing vacuum pump, the power consumption of the magnetic bearing vacuum pump being obtained by adding power consumption of the motor based on a motor rotational speed and a motor current value and power consumption of the magnetic bearing together; and a display controller configured to display, on a display device, the power consumption of the magnetic bearing vacuum pump calculated by the calculator.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: June 5, 2018
    Assignee: SHIMADZU CORPORATION
    Inventor: Nobuhiko Moriyama
  • Patent number: 9879688
    Abstract: A control method and apparatus for startup of turbocompressors to avoid overpowering a driver of the turbocompressor. In a first embodiment, the control system monitors input signals from transmitters of various control inputs. When the input signals exceed threshold values, the control system begins to close the antisurge valve. In a second embodiment, the antisurge valve begins to close after a predetermined time measured from the time startup is initiated. In both embodiments, the antisurge valve continues to ramp closed until the compressor has reached its operating zone, or until the compressor's operating point reaches a surge control line, at which point the antisurge valve is manipulated to keep the compressor from surging.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: January 30, 2018
    Assignee: Compressor Controls Corporation
    Inventors: Saul Mirsky, Wayne Jacobson, Jeff McWhirter
  • Patent number: 9329580
    Abstract: An electronic control by frequency inverter of the displacement system of an irrigation or fertirrigation set is made up of structured pipelines, in which the water distribution sprayers are mounted, and which are coupled to each other, and supported by movable towers which are moved by gear motors driving by means of cardans the wheel gear that in turn drive pneumatic wheels, moving the structure about a fixed point, or pivot point, which is the central tower. The driving of the gear motors of each tower is performed by an electric control unit via a frequency inverter, with analogic signal, preferably a potentiometer, or position encoder digital sensor or optical sensor of alignment with relation to the front and back tower.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: May 3, 2016
    Assignee: FOCKINK INDÚSTRIAS ELÉTRICAS LTDA.
    Inventors: Kurth Heuert, Maurício Oberdorfer, Aldo Fernando Baum
  • Patent number: 9234517
    Abstract: A method of operating an oil well comprises applying through a variable frequency drive AC electrical energy from a power grid to an AC electric motor to operate a drive mechanism of an oil well pump. The motor speed is regulated in a manner to optimize oil production and maximize the operational life of the drive mechanism, decreasing motor speed by transferring the electrical energy to the power grid and increasing motor speed by transferring the electrical energy from the power grid to the motor. The drive mechanism has a predetermined stroke cycle and, over the course of each stroke cycle, the motor is operated at different regulated speeds initiated when the drive mechanism is at a predetermined position in each stroke cycle.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: January 12, 2016
    Assignee: HAROLD WELLS ASSOCIATES, INC.
    Inventors: Lloyd Wentworth, Craig Lamascus
  • Patent number: 9228590
    Abstract: Method for controlling a compressor element of a screw compressor, where the compressor element has a housing with two meshing helical rotors supported in the housing in the axial direction using at least one axial bearing. The method has a process A and/or a process B, where process A has a first step of switching on a first magnet during start-up of the compressor element, such that the magnet exerts a force on the rotor that is directed from an outlet side to an inlet side, and of switching off this first magnet during nominal operation of the compressor element; and where process B has a first step of keeping a second magnet switched off during start-up of the compressor element, and switching on this second magnet during nominal operation of the compressor element, such that this second magnet exerts a force that is directed from the inlet side to the outlet side.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: January 5, 2016
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventors: Johan Nachtergaele, Simon Peter G. De Bock
  • Publication number: 20150147188
    Abstract: Disclosed is a high volume low speed (HVLS) fan that is designed to circulate air in large buildings for cooling, heating, and ventilation. A fan with a diameter between 8 to 24 feet consisting of a plurality of blades, with each in the shape of a tapered airfoil, is driven by a direct drive transverse flux electric motor to produce a very large slowly moving column of air. The HVLS system preferably includes motion and angular shutdown, voltage recognition, blade size recognition and data logging for recording the last 100 or so hours of operation to facilitate warranty applicability and assist in trouble shooting as well as software updates and programming via Bluetooth and internet keypad.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Inventor: Michael W. Danielsson
  • Publication number: 20150139815
    Abstract: An oil pressure control device for supplying oil pressure by rotating a hydraulic pump, by means of a motor, comprises an oil pressure sensor; a speed instruction operation unit for outputting a speed instruction value, based on a difference between an oil pressure determination value from the oil pressure sensor and an oil pressure instruction value; a torque instruction value operation unit for calculating a torque instruction value, based on a difference between a speed determination value and the speed instruction value; and a current control unit for controlling a current of the motor, based on the torque instruction value, and adds the load variation compensation speed outputted from the load variation compensation unit and the speed instruction value.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 21, 2015
    Inventor: Tomohiro Shibata
  • Publication number: 20150117987
    Abstract: Provided is a substrate treating apparatus. The substrate treating apparatus includes: a transfer chamber conveying a substrate; a process chamber disposed adjacent to the transfer chamber and performing a treating process o the substrate; and a drive assembly supplying a power by which a component of the transfer chamber or the process chamber operates, wherein the drive assembly includes: a cylinder connected to pipes; a piston disposed to be movable inside the cylinder and connected to the component by a drive shaft; and a pipe control unit automatically adjusting a moving speed of the piston.
    Type: Application
    Filed: October 30, 2014
    Publication date: April 30, 2015
    Inventors: Jin Ho CHOI, Ju Mi YOO
  • Publication number: 20150098837
    Abstract: In at least one illustrative embodiment, a diaphragm pump may comprise a housing defining a first pumping chamber, a second pumping chamber, and a hydraulic fluid chamber, a first flexible diaphragm separating the first pumping chamber from the hydraulic fluid chamber, a second flexible diaphragm separating the second pumping chamber from the hydraulic fluid chamber, a rod mechanically linking the first flexible diaphragm and the second flexible diaphragm such that an expansion of one of the first and second flexible diaphragms exerts a contraction force on the other of the first and second flexible diaphragms, and a piston disposed within the hydraulic fluid chamber and configured to reciprocate to cause a hydraulic fluid contained within the hydraulic fluid chamber to alternately exert an expansion force on the first and second flexible diaphragms.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Inventors: Warren A. Seith, Aaron M. Crescenti
  • Publication number: 20150078917
    Abstract: A converterless motor-driven pump system includes an off-grid prime mover. The off-grid prime mover has a rotational driveshaft and operates in response to a throttle control command to control a rotation speed of the rotational driveshaft. An electric power generator is driven by the off-grid prime mover to generate AC power. A variable speed induction motor is directly powered by the electric power generator. A pump that may be submersible is driven by the at least one variable speed induction motor. A system controller that may be local or remote is programmed to generate the throttle control command in response to one or more pump operating characteristics such that the off-grid prime mover, the electric power generator, and the variable speed induction motor together operate to regulate a pressure at the inlet of the electric pump.
    Type: Application
    Filed: September 19, 2013
    Publication date: March 19, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: David Allan Torrey, Deepak Aravind
  • Publication number: 20150044061
    Abstract: A method for controlling a rotational speed of a compressor train that can be driven at an adjustable rotational speed using a drive unit, a corresponding arrangement and a compressor train with a frequency converter-guided drive unit that can drive the compressor train at an adjustable rotational speed, and a frequency converter guiding the drive unit is provided. A load value describing a dynamic torsion load in the compressor train is measured at a current rotational speed of the compressor train driven by the drive unit. The load value is compared to a predetermined limit value and, if the load value satisfies a predetermined condition relative to the predetermined limit value, the current rotational speed in the compressor train is adjusted using the drive unit. The arrangement has a detection device and a control unit, which are designed to perform the method.
    Type: Application
    Filed: March 5, 2013
    Publication date: February 12, 2015
    Inventor: VOLKER HÜTTEN
  • Publication number: 20150023801
    Abstract: A rotation speed control circuit with function of auto-calibrating rotation speed error is disclosed. The rotation speed control circuit includes a first multiplexer, a second multiplexer, an error amplifier and a current compensation circuit. In calibration mode, the rotation speed control circuit selects a calibration clock signal and a calibration voltage through the first multiplexer and the second multiplexer correspondingly according to a mode switch signal, and adjusts current value of a first current accordingly. In other words, the rotation speed control circuit utilizes the first current to compensate error of the external capacitor through the calibration clock signal fixed and the calibration voltage fixed in the duration of calibration mode, so as to avoid that aging of the external capacitor leads to rotation speed error and then affects the whole operation.
    Type: Application
    Filed: October 31, 2013
    Publication date: January 22, 2015
    Applicant: ANPEC ELECTRONICS CORPORATION
    Inventors: MING-JUNG TSAI, CHING-SHENG LI, KUN-MIN CHEN, CHIEN-CHENG CHEN
  • Publication number: 20150004002
    Abstract: A speed-based system for controlling a pump displacement to control a pump flow rate of a hydraulic pump in a vehicle, such as a hybrid. The system includes a plurality of sensors, a controller, and a hydraulic pump. The controller is configured to receive data from the sensors, ascertain a speed of the vehicle, determine a target pump displacement, and transmit the target pump displacement. The target pump displacement is less than a predetermined maximum value when the speed of the vehicle is greater than a first predefined threshold, and equal to the predetermined maximum value when the speed of the vehicle is less than or equal to the first predefined threshold. The hydraulic pump is configured to ascertain an actual pump displacement, receive the target pump displacement from the controller, and alter the actual pump displacement to the target pump displacement.
    Type: Application
    Filed: October 30, 2013
    Publication date: January 1, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Michael Sowards, Brian Leslie, Frank Kachinski
  • Patent number: 8905721
    Abstract: A fan control system. The fan control system has a programmable microcontroller to receive an input signal and a rotation speed signal corresponding to the actual rotation speed of the fan motor, determining an output signal according to the input signal and the rotation speed signal, and outputting the output signal; and a fan-driving unit to receive the output signal and adjusting the rotation speed for driving the fan motor according to the output signal. The rotation speed is in a relation of a multi-stage function to the input signal.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: December 9, 2014
    Assignee: Delta Electronics Inc.
    Inventors: Wen-Chuan Ma, Pou-Tsun Kuo, Ming-Shi Tsai, Wen-Shi Huang
  • Publication number: 20140341751
    Abstract: The present invention relates to a control device for a radiator fan, in particular for a radiator fan of a motor vehicle, having an external control device which is designed to generate a controlled variable for an electric motor of the radiator fan according to a first predefined setpoint value, and having an internal control device which is designed to control the motor current of the electric motor of the radiator fan according to a predefined first motor current maximum value if the controlled variable which is generated by the external control device assumes such a value that the motor current exceeds the predefined first motor current maximum value. The present invention also relates to a radiator fan arrangement and to a method for controlling a radiator fan.
    Type: Application
    Filed: December 6, 2012
    Publication date: November 20, 2014
    Inventors: Karsten Ude, Stefan Zick
  • Patent number: 8892372
    Abstract: A method and apparatus for operating a pumping system includes the following: determining a motor operating parameter of a motor configured to drive a pump in a well; determining a pump operating parameter of the pump based on the motor operating parameter; operating the pump in a first mode to determine pump characteristics at a desired fluid level; generating first mode output data based on operation of the pump in the first mode; operating the pump in a second mode based on the first mode output data; determining an estimated fluid level in the well based on the motor operating parameter, the pump operating parameter and the first mode output data; and adjusting the pump speed based on the estimated fluid level in order to maintain a desired fluid level.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: November 18, 2014
    Assignee: Unico, Inc.
    Inventor: Ronald G. Peterson
  • Publication number: 20140334941
    Abstract: Provided is a pump apparatus capable of improving the performance in a wide operation range from an operation area with a low pressure and a high flow rate to an operation area with a high pressure and a low flow rate while suppressing a rated output of a motor used to drive a pump. A rotation speed of a motor 20 is controlled so that the rotation speed of the motor decreases with an increase in the load of the motor 20 driving a pump unit 10, the rotation speed thereof increases with a decrease in the load thereof, and the load does not exceed a predetermined upper limit. For this reason, it is possible to improve the performance in a wide operation range from an operation area with a low pressure and a high flow rate to an operation area with a high pressure and a low flow rate compared to a method of the related art of uniformly keeping a rotation speed of a motor.
    Type: Application
    Filed: February 19, 2014
    Publication date: November 13, 2014
    Inventors: YASUKI WADA, TAKAYUKI TSUJIMOTO
  • Publication number: 20140314582
    Abstract: A pumping system for moving water of a swimming pool includes a water pump and a variable speed motor. The pumping system further includes means for determining a first motor speed of the motor, means for determining first and second performance values of the pumping system, and means for comparing the first and second performance values. The pumping system further includes means for determining an adjustment value based upon the comparison, means for determining a second motor speed based upon the adjustment value, and means for controlling the motor in response to the second motor speed. In one example, the pumping system includes means for determining a value indicative of a flow rate of water moved by the pump. In addition or alternatively, the pumping system includes a filter arrangement. A method of controlling the pumping system for moving the water of the swimming pool is also disclosed.
    Type: Application
    Filed: July 1, 2014
    Publication date: October 23, 2014
    Inventors: Robert W. Stiles, JR., Lars Hoffmann Berthelsen, Peter Westermann-Rasmussen, Gert Kjaer, Florin Lungeanu
  • Publication number: 20140314583
    Abstract: A system for controlling the mixing ratio of a multi-component mixture including a first pump connectable to a source of a first component and a second pump connectable to a source of a second component. The first and second pump being associated with at least one linear sensor for generating an output indicative of actual pump speed or shaft displacement of the pump. The system further includes a control circuit operative to utilize the output of the linear sensor of one of the pumps to generate a control signal for controlling the output of the other pump.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 23, 2014
    Applicant: EPIC Solutions, Inc.
    Inventors: Jeffrey Arnold Wilkens, Timothy John Marthe, Justin D. Almen
  • Patent number: 8860350
    Abstract: A motor driving apparatus is applied to a fan and motor mechanism and a voltage supply unit. The motor driving apparatus includes a motor driving unit, a voltage division resistor, a first resistor, a first switch unit, a second resistor, a second switch unit, a third resistor, a third switch unit, a transistor switch, and a pulse width modulation unit. The first switch unit, the second switch unit, and the third switch unit are configured to select the rotational speed upper limitation of the fan and motor mechanism for suppressing noise.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: October 14, 2014
    Assignee: Enermax Technology Corporation
    Inventor: Yen-Wen Su
  • Patent number: 8851862
    Abstract: Provided is a system for transporting an oil sand slurry, comprising a pump, upstream and downstream lines, a shaft connectable to the pump, a driving mechanism driving the pump and a regulator for regulating the torque applied to the shaft between positive and negative torque modes, to pump the slurry at higher or lower flow rates. Also provided is a method comprising pumping the slurry through a pipeline using a pump driven by a motorised shaft and adjusting the flow rate of the slurry by varying the torque applied to the motorised shaft between positive and negative torque modes. The oil sand slurry transportation system and method enable positive head (regular pump action) for normal and high flow rates and negative head (pump brake action) for low flow rates, which reduces system energy loss, pipeline wear, vapor breakout and sanding off.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: October 7, 2014
    Assignee: Suncor Energy Inc.
    Inventor: Mark L. Odegard
  • Publication number: 20140294601
    Abstract: Hydraulic pumps/motors are used to convert between rotational motion/power and fluid motion/power. Pressure differential is achieved across the pump/motor by applying torque to either aid or impede rotation which generally results in either a pressure rise or pressure drop respectively across the unit. This torque is often supplied by an electric motor/generator. Especially in positive displacement pumps/motors this pressure differential is not a smooth value but rather it contains high frequency fluctuations known as pressure ripple that are largely undesirable. With thorough analysis it can be discovered that these fluctuations occur in a predictable manner with respect to the position (angular or linear) of the pump/motor. Using a model that contains this information, a feed-forward method of high-frequency motor torque control is implemented directly on the hydraulic pump/motor by adding to the nominal torque, a model-based torque signal that is linked to rotor position.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 2, 2014
    Applicant: Levant Power Corporation
    Inventors: Colin Patrick O'Shea, Tyson David Sawyer, Marco Giovanardi
  • Patent number: 8845299
    Abstract: System and methods are provided for reducing vibration in server or data storage units. An anti-vibration system according to the present invention includes one or more disk drives and one or more fans in a defined area, and a controller which is configured to control operation of each of the one or more fans. A nominal speed setting and a speed range are determined for the one or more fans, either commonly or independently with respect to each, and the fans are caused to be driven in accordance with the determined speed setting and speed range. As a result the occasions in which individual fan speeds are coincident with fixed frequency sensitivities for each disk drive are substantially minimized.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: September 30, 2014
    Assignee: PAI Capital LLC
    Inventor: Robert William Hughes
  • Publication number: 20140255213
    Abstract: A power supply circuit includes a connector for a fan, a speed adjusting circuit, a speed feedback circuit, a control module, first and second power sources, and a switching module. The speed adjusting circuit is connected to a modulation pin of the connector. The speed feedback circuit is connected to a speed pin of the connector. The control module receives a speed signal from the fan through the speed feedback circuit and outputs signals correspondingly. The switching module selects the first or the second power source to supply power for the fan according to the signals from the control module.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
    Inventors: BO TIAN, KANG WU
  • Patent number: 8813742
    Abstract: A hot water feeder in which a solar heat collector is used. The feeder has a first heat exchanger for heating a heat medium by solar heat, a second heat exchanger for heating water in a hot-water tank by the heated heat medium, and a heat exchange volume determination unit. The heat exchange volume determination unit calculates the flow rate of the heat medium circulating between the first and second heat exchangers on the basis of the detected temperature of the heat medium fed to the first heat exchanger and the rotational speed of a heat medium circulation pump, and calculates the heat exchange volume on basis of the flow rate and the temperature difference between the detected temperatures.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: August 26, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventor: Yasushi Kanai
  • Publication number: 20140227104
    Abstract: An electrically-operated hydraulic work machine drives an actuator with a hydraulic pump driven by an electric motor and exercises load sensing control by controlling the rotation speed of the electric motor. The useful life of an electrical storage device, which is an electrical power source for the electric motor, is increased by suppressing the horsepower consumption of the hydraulic pump. This prolongs the operating time of the electrically-operated hydraulic work machine, and reduces the size of the electric motor. A controller exercises load sensing control over a variable displacement main pump by controlling the rotation speed of the electric motor, and provides the main pump with a torque control device that reduces the delivery rate of the main pump when the delivery pressure of the main pump increases, or provides the controller with a control algorithm that performs the same function as the torque control device.
    Type: Application
    Filed: October 18, 2012
    Publication date: August 14, 2014
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Kiwamu Takahashi, Shingo Kishimoto, Yoshifumi Takebayashi, Kazushige Mori, Natsuki Nakamura
  • Patent number: 8801389
    Abstract: Embodiments of the invention provide a pumping system for at least one aquatic application. The pumping system includes a pump, a motor coupled to the pump, and a controller in communication with the motor. The controller determines a first motor speed, obtains a reference flow rate, determines a present flow rate, and determines a present power consumption. The controller calculates a difference value between the reference flow rate and the present flow rate, and uses at least one of integral, proportional, and derivative control to generate a second motor speed based on the difference value. The controller attempts to drive the motor at the second motor speed until reaching a steady state condition.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: August 12, 2014
    Assignees: Pentair Water Pool and Spa, Inc., Danfoss Low Power Drives A/S
    Inventors: Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Peter Westermann-Rasmussen, Gert Kjaer, Florin Lungeanu
  • Patent number: 8742750
    Abstract: A speed pick-up ring includes a main body having a plurality of targets and defining a plurality of notches. Each notch is disposed between adjacent targets. Each notch includes a base wall, a first sidewall and an oppositely disposed second sidewall. The base wall includes a convex portion. A fluid device includes a housing and a variable reluctance speed sensor engaged to the housing. The fluid device further includes a speed pick-up ring disposed within the housing. The speed pick-up ring includes a main body having a plurality of targets and defining a plurality of notches. Each notch is disposed between adjacent targets. Each notch includes a base wall, a first sidewall that is generally concave and an oppositely disposed second sidewall that is generally concave. The base wall includes a convex portion.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: June 3, 2014
    Assignee: Eaton Corporation
    Inventors: John Ryan Kess, John Charles Walters
  • Publication number: 20140105754
    Abstract: A method of controlling an electric compressor of the present invention, comprises the steps of: setting a specified constant rotating speed as a target rotating speed (Rt) of a DC motor (103) (S1); obtaining an actual measurement rotating speed (Rm) which is a measurement value of a rotating speed of the DC motor (103) (S2); adjusting a duty ratio of driving electric power of the DC motor (103) so that the actual measurement rotating speed (Rm) matches the target rotating speed (Rt) (S3); and newly setting the target rotating speed based on a change in the duty ratio (S4).
    Type: Application
    Filed: March 1, 2013
    Publication date: April 17, 2014
    Applicant: Panasonic Corporation
    Inventor: Katsumi Endou
  • Patent number: 8672640
    Abstract: A fan rotation speed control system for controlling rotation speed of a fan is provided. The system has: a fan rotation speed controller, coupled to the fan, for receiving a signal value to produce a driving voltage to the fan and detecting an actual rotation speed of the fan; and a master controller, coupled to the fan rotation speed controller, for providing the signal value and recalculating the signal value by comparing the actual rotation speed with a target rotation speed.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: March 18, 2014
    Assignee: Quanta Computer Inc.
    Inventor: Hung-Ming Lin
  • Patent number: 8672649
    Abstract: A fan system includes a motor, a rotatable hub, and a plurality of fan blades. The motor is coupled with the hub by a hollow drive shaft, such that the drive system of the fan system is gearless. The motor is controlled by a PFC-based control module, which is in communication with sensors that are configured to sense parameters associated with operation of the fan system. The control module is configured to react in certain ways to certain conditions detected by the sensors, such that the fan system uses feedback-based control algorithms. A remote control panel is in communication with the control module. The remote control panel is operable to display fault conditions detected by the sensors. Blade retainers prevent fan blades from falling when a fan blade breaks free from the hub. Pins prevent the hub from falling when the hub breaks free from the rotor.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: March 18, 2014
    Assignees: Delta T Corporation, Moog Inc.
    Inventors: J. Carey Smith, Richard A. Oleson, Richard M. Aynsley, Richard W. Fizer, Mark A. Toy, Elios Klemo, Ron G. Flanary, Troy A. Anderson
  • Publication number: 20140072450
    Abstract: A system according to the principles of the present disclosure includes a pump control module and a pump diagnostic module. The pump control module commands a water pump to switch between on and off, wherein the water pump circulates coolant through an engine when the water pump switches on as commanded. The pump diagnostic module diagnoses a fault in the water pump based on a change in a crankshaft speed of the engine when the water pump is commanded to switch between on and off.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 13, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Stephen Paul Levijoki
  • Publication number: 20140072449
    Abstract: A fan control system for a fan on a motherboard includes an I/O controller installed on the motherboard and a control circuit electrically connected to the I/O controller. The fan includes a motor and a rotation speed detecting chip. The I/O controller outputs a rotation speed control signal and a pulse width modulation (PWM) signal. The rotation speed detecting chip detects a rotation speed of the fan, and outputs a rotation speed feedback signal according to the rotation speed of the fan. The I/O controller receives the rotation speed feedback signal, and adjusts a duty cycle of the PWM signal accordingly to change the rotation speed of the fan. The control circuit receives the rotation speed control signal, and outputs a fan driving signal accordingly. The motor receives the fan driving signal, and drives the fan to rotate in a direction according to the fan driving signal.
    Type: Application
    Filed: June 10, 2013
    Publication date: March 13, 2014
    Inventors: ZHI-JIANG YAO, WEN-CHANG GAO
  • Patent number: 8657584
    Abstract: An apparatus for tuning pump speed at an optimal or desired speed using an automated method is disclosed. The apparatus includes a vacuum pump connected to a chamber for evacuating gas from the chamber. A sensor measures one or more characteristics, such as pressure, of the gas in the chamber. The measured characteristic is compared to a predetermined value. The speed of vacuum pump is adjusted based on the comparison until it falls in a desired range.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: February 25, 2014
    Assignee: Edwards Limited
    Inventors: Gerald Robin Shelley, Mark Kollin Romeo, Jeffrey Robert Schwab
  • Publication number: 20130330205
    Abstract: Methods, systems, and techniques for structuring, operating, and/or controlling a variable fluid flow system of a machine are provided. In various embodiments, a supplemental pump and/or an electric motor can be leveraged in combination with the existing components of a machine, such as the main fluid pump of the machine.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 12, 2013
    Applicant: RPM Industries, LLC
    Inventors: John K. Apostolides, John J. McCosby, Carl Preston Shaffer
  • Publication number: 20130280099
    Abstract: A fan assembly comprising an air inlet, at least one air outlet, an impeller, a motor for rotating the impeller to draw air through the air inlet, at least one heater assembly, and a user interface for allowing a user to select a speed setting for the motor from a user selectable range of speed settings, and for allowing a user to select one of a first and second operational mode of the fan assembly. A rotational speed of the motor is set depending on the user selected speed setting, and is selected from a first range of values when the first operational mode of the fan assembly has been selected, and from at least one second range of values when the second operational mode of the fan assembly has been selected, with each value within each of the range of values being associated with a respective speed setting.
    Type: Application
    Filed: April 18, 2013
    Publication date: October 24, 2013
    Inventors: Charles Edward PARK, Tom Vallance Hamilton CRAWFORD
  • Patent number: 8562303
    Abstract: A fuel supply system has an in-tank module. The in-tank module is provided with a pump, a filter, a pressure regulator and a pressure sensor detecting a fuel pressure. The pressure sensor is disposed on or at a vicinity of the fuel pump so that the pressure sensor easily detects a pulsation component due to the pump. A fuel pump controller includes a speed detection module which detects the rotation speed of the fuel pump based on a cycle of the pulsation component of the pressure detected by the pressure sensor. Thus, the rotation speed of the fuel pump can be indirectly detected by means of the pressure sensor.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 22, 2013
    Assignee: Denso Corporation
    Inventors: Hideyuki Mori, Katsuhiko Nakabayashi
  • Patent number: 8500413
    Abstract: The present invention provides a pumping system for moving water of a swimming pool, including a water pump and a variable speed motor. In one example, a target volume amount of water and an operational time period is provided, and the operational time period is altered based upon a volume of water moved. In another example, operation of the motor is altered based upon the volume of water moved. In addition or alternatively, a target flow rate of water to be moved by the water pump is determined based upon the target volume amount and a time period. In addition or alternatively, a plurality of operations are performed on the water, and a total volume of water moved by the pump is determined. In addition or alternatively, an optimized flow rate value is determined based upon power consumption.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: August 6, 2013
    Assignees: Pentair Water Pool and Spa, Inc., Danfoss Low Power Drives A/S
    Inventors: Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Ronald B. Robol, Christopher R. Yahnker, Einar Kjartan Runarsson