Patents by Inventor John C. Hansen
John C. Hansen 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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Patent number: 8336323Abstract: A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive receives an input AC power at a fixed input AC voltage and a fixed input frequency, and provides an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter and configured to filter and store the DC voltage from the converter. An inverter is connected to the DC link. A motor is connectable to the compressor for powering the compressor. A controller is arranged to control switching in the converter and the inverter. The controller is arranged to apply randomized pulse width modulation to vary the switching frequency of transistors in the converter and the inverter at each switching cycle. The motor may be a permanent magnet synchronous motor.Type: GrantFiled: October 2, 2009Date of Patent: December 25, 2012Assignee: Johnson Controls Technology CompanyInventors: Konstantin Borisov, Zhiqiao Wu, Michael S. Todd, Justin Drew Warner, Shreesha Adiga Manoor, Ivan Jadric, Scott Victor Slothower, Kanishk Dubey, John C. Hansen
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Patent number: 8302426Abstract: An heat exchanger for use in a vapor compression system is disclosed and includes a shell, a first tube bundle, a hood and a distributor. The first tube bundle includes a plurality of tubes extending substantially horizontally in the shell. The hood covers the first tube bundle. The distributor is configured and positioned to distribute fluid onto at least one tube of the plurality of tubes.Type: GrantFiled: June 8, 2010Date of Patent: November 6, 2012Assignee: Johnson Controls Technology CompanyInventors: Paul de Larminat, Jeb Schreiber, Jay A. Kohler, John C. Hansen, Mustafa Kemal Yanik, William F. McQuade, Justin Kauffman, Soren Bierre Poulsen, Lee Li Wang, Satheesh Kulankara
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Patent number: 8286439Abstract: A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive is arranged to receive an input AC power at a fixed AC input voltage and fixed input frequency and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source providing the input AC voltage. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter. The DC link is arranged to filter and store the DC voltage from the converter. A first inverter and a second inverter are each connected to the DC link. A motor includes stator windings connected between the first inverter and the second inverter to power the motor by the output AC power from the first inverter and the second inverter. The motor is connectable to a compressor of the chiller system to power the compressor. The motor may be a permanent magnet synchronous motor.Type: GrantFiled: October 2, 2009Date of Patent: October 16, 2012Assignee: Johnson Control Technology CompanyInventors: Zhiqiao Wu, Ivan Jadric, Michael S. Todd, Justin Drew Warner, Shreesha Adiga Manoor, Konstantin Borisov, Scott Victor Slothower, Kanishk Dubey, John C. Hansen
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Publication number: 20120240614Abstract: A medium voltage power controller box is mounted on a chiller unit with the other components of the chiller system. The power controller box can be positioned on the chiller system unit to permit the power controller box to be close coupled to the motor, and specifically to the main motor lead exit hub without the need for any power conduit connections between the power controller box and the motor. In addition, the power controller box also does not require any control interface and receives controls from a control panel. A short conduit connection between the control panel and the power controller box is used to provide the necessary connections between the control panel and the power controller box.Type: ApplicationFiled: June 7, 2012Publication date: September 27, 2012Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Dean K. NORBECK, John C. HANSEN
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Patent number: 8258664Abstract: A hybrid motor for powering a compressor of a chiller system includes a first rotor portion and a first stator portion configured as a permanent magnet motor and a second rotor portion and a second stator portion configured as a reluctance motor. The second rotor portion includes a reluctance-type rotor, and the second stator portion includes electromagnetic windings capable of inducing a rotary magnetic field. The first rotor portion and the second rotor portion are attached to a common drive shaft. The reluctance motor is arranged to generate start-up torque and initiate rotation of the drive shaft until the drive shaft achieves a predetermined rotational speed. The permanent magnet motor is arranged to power the drive shaft between the predetermined rotational speed and a maximum rotational speed.Type: GrantFiled: October 2, 2009Date of Patent: September 4, 2012Assignee: Johnson Controls Technology CompanyInventors: Justin D. Warner, Ivan Jadric, Michael S. Todd, Zhiqiao Wu, Shreesha Adiga Manoor, Konstantin Borisov, Scott Victor Slothower, Kanishk Dubey, John C. Hansen
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Patent number: 8193756Abstract: A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive is arranged to receive an input AC voltage at a fixed AC input voltage and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source providing the input AC voltage. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter. The DC link filters and stores the DC voltage from the converter. An inverter is connected to the DC link. A motor connectable to the compressor for powering the compressor. An active filter connected in parallel with the motor. The active filter is arranged to generate high frequency currents having a magnitude and opposite polarity, with respect to the output AC power of the variable speed drive. The high frequency currents generated by active filter substantially cancel out high frequency currents flowing into the motor.Type: GrantFiled: October 2, 2009Date of Patent: June 5, 2012Assignee: Johnson Controls Technology CompanyInventors: Ivan Jadric, Zhiqiao Wu, Michael S. Todd, Justin Drew Warner, Shreesha Adiga Manoor, Konstantin Borisov, Scott Victor Slothower, Kanishk Dubey, John C. Hansen
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Patent number: 8109104Abstract: Systems and methods are provided for detecting performance degradation in a refrigeration system. Specifically, the present invention provides systems and methods for detecting, at a very early stage, a low refrigerant charge and degradation in condenser performance of a refrigeration system.Type: GrantFiled: August 25, 2004Date of Patent: February 7, 2012Assignee: York International CorporationInventors: Martin Luther Doll, Jr., John C. Hansen
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Publication number: 20110259023Abstract: Systems and methods are provided for detecting performance degradation in a refrigeration system. Specifically, the present invention provides systems and methods for detecting, at a very early stage, a low refrigerant charge and degradation in condenser performance of a refrigeration system.Type: ApplicationFiled: July 6, 2011Publication date: October 27, 2011Inventors: Martin Luther Doll, JR., John C. Hansen
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Publication number: 20100319395Abstract: An heat exchanger for use in a vapor compression system is disclosed and includes a shell, a first tube bundle, a hood and a distributor. The first tube bundle includes a plurality of tubes extending substantially horizontally in the shell. The hood covers the first tube bundle. The distributor is configured and positioned to distribute fluid onto at least one tube of the plurality of tubes.Type: ApplicationFiled: January 9, 2009Publication date: December 23, 2010Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Paul de Larminat, Jeb Schreiber, Jay A. Kohler, John C. Hansen, Mustafa Kemal Yanik, William F. McQuade, Justin Kauffman, Soren Bierre Poulsen, Lee Li Wang, Satheesh Kulankara
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Publication number: 20100242533Abstract: An heat exchanger for use in a vapor compression system is disclosed and includes a shell, a first tube bundle, a hood and a distributor. The first tube bundle includes a plurality of tubes extending substantially horizontally in the shell. The hood covers the first tube bundle. The distributor is configured and positioned to distribute fluid onto at least one tube of the plurality of tubes.Type: ApplicationFiled: June 8, 2010Publication date: September 30, 2010Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Paul De LARMINAT, Jeb SCHREIBER, Jay A. KOHLER, John C. HANSEN, Mustafa Kemal YANIK, William F. MCQUADE, Justin KAUFFMAN, Soren Bierre POULSEN, Lee Li WANG, Satheesh KULANKARA
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Publication number: 20100084935Abstract: A hybrid motor for powering a compressor of a chiller system includes a first rotor portion and a first stator portion configured as a permanent magnet motor and a second rotor portion and a second stator portion configured as a reluctance motor. The second rotor portion includes a reluctance-type rotor, and the second stator portion includes electromagnetic windings capable of inducing a rotary magnetic field. The first rotor portion and the second rotor portion are attached to a common drive shaft. The reluctance motor is arranged to generate start-up torque and initiate rotation of the drive shaft until the drive shaft achieves a predetermined rotational speed. The permanent magnet motor is arranged to power the drive shaft between the predetermined rotational speed and a maximum rotational speed.Type: ApplicationFiled: October 2, 2009Publication date: April 8, 2010Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Ivan JADRIC, Shreesha ADIGA-MANOOR, Kanishk DUBEY, Justin Drew WARNER, Michael S. TODD, Zhiqiao WU, Konstantin BORISOV, Scott V. SLOTHOWER, John C. HANSEN
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Publication number: 20100083692Abstract: A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive is arranged to receive an input AC power at a fixed AC input voltage and fixed input frequency and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source providing the input AC voltage. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter. The DC link is arranged to filter and store the DC voltage from the converter. A first inverter and a second inverter are each connected to the DC link. A motor includes stator windings connected between the first inverter and the second inverter to power the motor by the output AC power from the first inverter and the second inverter. The motor is connectable to a compressor of the chiller system to power the compressor. The motor may be a permanent magnet synchronous motor.Type: ApplicationFiled: October 2, 2009Publication date: April 8, 2010Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Michael S. TODD, Zhiqiao WU, Konstantin BORISOV, Scott V. SLOTHOWER, Kanishk DUBEY, Justin Drew WARNER, Ivan Jadric, Shreesha ADIGA-MANOOR, John C. HANSEN
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Publication number: 20100085000Abstract: A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive is arranged to receive an input AC voltage at a fixed AC input voltage and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source providing the input AC voltage. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter. The DC link filters and stores the DC voltage from the converter. An inverter is connected to the DC link. A motor connectable to the compressor for powering the compressor. An active filter connected in parallel with the motor. The active filter is arranged to generate high frequency currents having a magnitude and opposite polarity, with respect to the output AC power of the variable speed drive. The high frequency currents generated by active filter substantially cancel out high frequency currents flowing into the motor.Type: ApplicationFiled: October 2, 2009Publication date: April 8, 2010Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Michael S. TODD, Zhiqiao WU, Ivan JADRIC, Shreesha ADIGA-MANOOR, Konstantin BORISOV, Scott V. SLOTHOWER, Kanishk DUBEY, Justin Drew WARNER, John C. HANSEN
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Publication number: 20100083693Abstract: A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive receives an input AC power at a fixed input AC voltage and a fixed input frequency, and provides an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter and configured to filter and store the DC voltage from the converter. An inverter is connected to the DC link. A motor is connectable to the compressor for powering the compressor. A controller is arranged to control switching in the converter and the inverter. The controller is arranged to apply randomized pulse width modulation to vary the switching frequency of transistors in the converter and the inverter at each switching cycle. The motor may be a permanent magnet synchronous motor.Type: ApplicationFiled: October 2, 2009Publication date: April 8, 2010Applicant: Johnson Controls Technology CompanyInventors: Michael S. Todd, Zhiqiao Wu, Kanishk Dubey, Justin Drew Warner, Konstantin Borisov, Scott V. Slothower, John C. Hansen, Ivan Jadric, Shreesha Adiga-Manoor
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Publication number: 20100006264Abstract: A cooling system is provided for a motor powering a compressor in a vapor compression system. The cooling system including a housing and a cavity within the housing. A first fluid circuit has a first connection to receive a refrigerant into the cavity, and a second connection to deliver refrigerant from the cavity to a heat exchanger for a heat transfer relationship with a heat-generating component.Type: ApplicationFiled: July 13, 2009Publication date: January 14, 2010Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Ivan JADRIC, Steven J. ESTES, John C. HANSEN, Koman B. NAMBIAR, Andrew M. WELCH, Steven T. SOMMER, Gregory K. BEAVERSON
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Publication number: 20100006262Abstract: A cooling system is provided for a motor powering a compressor in a vapor compression system. The cooling system includes a housing enclosing the motor, and a cavity located within the housing. A fluid circuit circulates a cooling fluid in the motor, the fluid circuit having a first connection in the housing to receive cooling fluid, and a second connection in the housing to remove cooling fluid in fluid communication with the loop. The fluid circuit includes a passageway for cooling fluid positioned in an internal chamber formed in a motor shaft.Type: ApplicationFiled: July 13, 2009Publication date: January 14, 2010Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Andrew M. WELCH, Steven J. ESTES, John C. HANSEN, Steven T. SOMMER, Gregory K. BEAVERSON
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Publication number: 20090178790Abstract: An evaporator for use in a vapor compression system is disclosed. The evaporator may include an enclosure that covers a substantial portion of a tube bundle in the evaporator. The enclosure substantially prevents refrigerant vapor, generated as a result of the heat transfer with the tube bundle, from flowing laterally between tubes of the tube bundle. Various configurations of a distributor for distributing refrigerant to at least a portion of a tube bundle in the evaporator provides increased performance of the evaporator.Type: ApplicationFiled: January 12, 2009Publication date: July 16, 2009Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: Jeb SCHREIBER, Jay A. KOHLER, John C. HANSEN, Mustafa Kemal YANIK, William F. MCQUADE, Justin KAUFFMAN, Satheesh KULANKARA, Soren Bierre POULSEN, Lee Li WANG
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Patent number: 6386272Abstract: A system for calculating the degree of fouling in a heat exchanger having at least one longitudinal tube inside of a shell, the shell having a first heat exchange medium flowing inside the tube and a second heat exchange medium flowing across the outside surface of the tube. The apparatus includes a first temperature sensor, a device for determining the temperature of the tube at a first axial position of the tube, and a fouling detector. The first temperature sensor senses the temperature of the tube at a first axial position of the tube. The fouling detector calculates the degree of fouling in the tube based on the initial temperature difference between the temperature of the tube and the temperature of the first heat exchange medium in the tube at the first axial position, and a later temperature difference between the temperature of a surface of the tube and the temperature of the first heat exchange medium in the tube at the first axial position.Type: GrantFiled: January 28, 2000Date of Patent: May 14, 2002Assignee: York International CorporationInventors: Keith E. Starner, John C. Hansen
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Patent number: 6247295Abstract: The invention consists of an engine driving a wet clutch and hydrostatic pump and connected hydrostatic motor. The output of the motor drives the sun gear of a hydro-mechanical planetary drive and the output of the clutch drives the ring gear of the same drive. The carrier is the output and drives the rotors of an agricultural combine. The transmission is controlled by a microcomputer. The microcomputer receives signals from an engine speed sensor and a rotor speed sensor and transmits controlling signals to the hydrostatic pump's swash plate and to a clutch valve allowing a quantity of hydraulic fluid to enter the clutch. The microcomputer can also send a signal to brake the ring gear while reversing the direction of the hydrostatic pump motor to allow act as a reverser for the rotor. The microcomputer also can receive signals from the rotor speed sensor to open the clutch valve allowing a quantity of hydraulic fluid to enter and synchronize the clutch.Type: GrantFiled: October 28, 1999Date of Patent: June 19, 2001Assignee: New Holland North America, Inc.Inventors: John C. Hansen, Jeffery D. Frego, David J. Templeton, Steven C. Young
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Patent number: 6110976Abstract: This invention provides perfluoro(alkoxycycloalkane) carbonyl fluoride compounds wherein, pendant from the fluorinated ring, are from 2 to 5 perfluoroalkoxy groups having from 1 to 4, preferably 1 to 2, carbon atoms with the proviso that when one or more of the perfluoroalkoxy groups contain from 3 to 4 carbon atoms, there are no more than 3 pendant groups. Also described are amidoamine intermediates prepared from the carbonyl fluoride compounds as precursors for surfactants used in aqueous film-forming foam (AFFF) compositions.Type: GrantFiled: March 16, 1998Date of Patent: August 29, 2000Assignee: 3M Innovative Properties CompanyInventors: John C. Hansen, George G. I. Moore, Stephen D. Polson, Patricia M. Savu, Richard M. Stern