By External Cooled Liquid Or Holdover Patents (Class 62/201)
  • Patent number: 10746440
    Abstract: A thermal management system for regulating dissipation of multiple thermal loads during operation of an apparatus includes a two-phase pump loop (TPPL), a vapor cycle system (VCS), and a liquid thermal energy storage (TES) system integrated together to maintain the apparatus at a constant temperature. The TPPL is configured to remove heat from the apparatus; the TES system is configured to provide thermal energy storage and temperature regulation; and the VCS is configured to transfer heat to the environment. The multiple thermal loads include a primary thermal load in the form of heat from the apparatus and a secondary thermal load in the form of at least one of a housekeeping thermal load or a power electronics thermal load. The primary and secondary loads are at different temperatures with each being independently selected to be transient or steady state.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: August 18, 2020
    Assignees: ROLLS-ROYCE NORTH AMERICAN TECHNOLOGIES, INC., ROLLS-ROYCE CORPORATION
    Inventors: Eric S. Donovan, Michael J. Head, Ken S. Rubel, Brian T. Spangler, Douglas J. Snyder, Aric Acius
  • Patent number: 10544542
    Abstract: Disclosed is a control method for laundry treating apparatus configured to perform a dry cycle for clothes by operating a heat pump comprising: a measuring step for measuring a temperature of a refrigerant and a temperature of air which pass through an evaporator to exchange heat; a comparing step for comparing a difference between the measured temperatures of the refrigerant and air with a preset reference temperature; and an adjusting step for adjusting an opening degree of the expansion valve according to the result of the comparing step.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: January 28, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyeonjoong Kim, Injae Han
  • Patent number: 10533556
    Abstract: Systems and methods are used to control operation of a rotary compressor of a refrigeration system to improve efficiency by varying the volume ratio and the speed of the compressor in response to current operating and load conditions. The volume of the axial and/or radial discharge ports of the compressor can be varied to provide a volume ratio corresponding to operating conditions. In addition, permanent magnet motors and/or control of rotor tip speed can be employed for further efficiency gains.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: January 14, 2020
    Assignee: Trane International Inc.
    Inventors: Jay H. Johnson, John R. Sauls, Gordon Powell, Daniel R. Crum
  • Patent number: 10458690
    Abstract: A control system controls the output capacity of a compressor to avoid surge conditions in the compressor. The control system determines a capacity control output for the compressor and then modifies the capacity control output in view of any output limiters or overrides as determined by system operating parameters and to maintain a minimum frequency of operation for the compressor.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: October 29, 2019
    Assignee: Johnson Controls Technology Company
    Inventor: Curtis Christian Crane
  • Patent number: 10378816
    Abstract: A food prep table may include an upper chilling zone and a lower chilling zone, with each chilling zone containing an evaporation coil system, such as a TurboCoil™ system. The two evaporation coil systems are monitored and controlled by a dual thermostat and control unit (500) having temperature sensor probes in each chilling zone and controlling solenoid valves within each evaporation coil system. By the artful use and implementation of the dual thermostat and control unit, and by the artful use of T junctures in refrigerant supply and return lines, the disclosed embodiments enable a single condensing unit (600) to service both evaporation coil systems to achieve new efficiencies in the cost, refrigeration capacity, and thermal and mechanic attributes of the system. Moreover, an efficient dual air over air flow assembly is disclosed wherein chilled air is moved within the upper chilling zone in a manner that leverages the native configuration and cabinet surface areas of the evaporation coil systems.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: August 13, 2019
    Inventor: Hector Delgadillo
  • Patent number: 10175705
    Abstract: This invention relates to a power mapping and modeling system for integrated circuits.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: January 8, 2019
    Assignee: Brown University
    Inventors: Sherief Reda, Abdullah Nowroz, Kapil Dev
  • Patent number: 10107531
    Abstract: A method for controlling a chiller system, the chiller system comprising a primary side in the form of a vapor compression system, and a secondary side, is disclosed. The secondary side comprises a variable speed pump for providing a secondary fluid flow through the evaporator of the primary side in such a manner that heat exchange takes place between refrigerant of the primary side and fluid of the secondary side in the evaporator, the secondary side further comprising a temperature sensor arranged in the secondary fluid flow.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: October 23, 2018
    Assignee: Danfoss A/S
    Inventor: Jan Prins
  • Patent number: 10090797
    Abstract: A motor control apparatus that controls a motor equipped with a cooling apparatus includes: an acquisition unit to acquire the temperature of the motor; a drive control unit to drive the motor and output a driving state and an operating condition of the motor as an operation information signal; and a cause determination unit to determine, on the basis of the temperature of the motor and the operation information signal, at least one of a plurality of causes of heat generation as a cause of heat generation by the motor.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: October 2, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuki Takahei, Toshihiro Azuma, Hiroki Uemura
  • Patent number: 9823005
    Abstract: Methods and systems for detecting and recovering from control instability caused by impeller stall in a chiller system are provided. In one embodiment, an impeller stall detection and recovery component of a chiller control unit calculates a control error signal frequency spectrum for an evaporator leaving water temperature, determines whether a high frequency signal content of the control error signal frequency spectrum exceeds acceptable limits, and adjusts a surge boundary control curve downward by a predetermined incremental value in order to resolve instability caused by impeller stall.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: November 21, 2017
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Thomas J. Clanin, Lee L. Sibik
  • Patent number: 9810466
    Abstract: A heat pump system includes a heat source unit having a variable-capacity compressor and a heat-source-side heat exchanger that functions as an evaporator for a refrigerant, and a plurality of usage units connected to the heat source unit and having usage-side heat exchangers that function as radiators for the refrigerant. The operating capacity of the compressor is controlled to bring the discharge pressure of the compressor, or a state quantity equivalent to the discharge pressure, to a first target value. The first target value is determined based on an equivalent target value equivalent to a usage temperature required in individual usage units.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: November 7, 2017
    Assignee: Daikin Industries, Ltd.
    Inventor: Masahiro Honda
  • Patent number: 9682607
    Abstract: Disclosed therein is an air conditioner for a vehicle, which includes an evaporator and a heater core mounted inside an air-conditioning case along an air flow direction in order; and a storage tank on which the evaporator is mounted, wherein the storage tank has a surface contact part carrying out heat exchange of the heat carrier, wherein the evaporator is in surface contact with the storage tank at the surface contact part. The air conditioner further includes a heat-exchanger mounted inside the storage tank exchanging heat between refrigerant circulating the evaporator and the heat carrier (cooling water) stored in the storage tank.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: June 20, 2017
    Assignee: HANON SYSTEMS
    Inventors: Seong Seok Han, Seong Hyun Kim, Dong Gyun Kim, Hyung Joo Kim
  • Patent number: 9551535
    Abstract: An apparatus and method for cooling water in a swimming pool includes a heat exchanger coupled to a withdrawal conduit and a skimmer conduit of the pool filtering system. The heat exchanger is buried in the ground at a depth at which the ground temperature is substantially constant year-round thereby providing a passive heat sink for the heat exchanger. Water from the swimming pool is passed to a three-way valve for directing pool water either directly back to the swimming pool or through the heat exchanger for cooling pool water by heat transfer to the ground heat sink before being returned to the pool. Pool water from the skimmer conduit is selectively directed through the heat exchange while flow of pool water from the withdrawal conduit is prevented. A temperature sensor may control operation of the three-way valve and selective operation of the skimmer and withdrawal conduits.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: January 24, 2017
    Inventor: Robert M Rodrick
  • Patent number: 9528717
    Abstract: An extended run time device for extending the time that a compressor-based heating, ventilating, and air-conditioning (HVAC) system runs so as to increase energy efficiency of the HVAC system. The extended run time device includes a sensing circuit, a switching device and a processor. Based upon a signal from the sensing circuit, the processor causes the switching device to transmit a proxy control signal to the compressor, thereby causing power to the compressor to be maintained for a time period longer than a time period requested by the temperature control device.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: December 27, 2016
    Assignee: Cooper Technologies Company
    Inventors: Joseph E. Childs, Roger W. Rognli, Robert J. Cox, Brock Simonson
  • Patent number: 9493051
    Abstract: A method and system for cooling the fuel contained in the fuel storage tank of motor vehicles using internal combustion engines. The method and system uses tubing in intimate contact with the exterior of the fuel tank to cool the fuel tank. The method and system may optionally employ an insulating wrap or shell to improve thermal efficiency.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: November 15, 2016
    Inventors: Antwanette Bills, Anthony Bills
  • Patent number: 9267746
    Abstract: A liquid-air cooling system (1) has at least one fan device (2) including at least one variable-speed fan motor (3) driving a fan impeller (4) to create a cooling power for a fluid (5) in a fluid cycle (6). To regulate the speed of the fan motor (3) by a control and/or regulation device (24), at least one actual value (Ta) downstream of a segmented heat exchanger (19) is compared to a predefined desired value (Tb). The control and/or regulation device (24) adjusts the cooling power according to the current power values of the respective machine unit (9).
    Type: Grant
    Filed: December 17, 2011
    Date of Patent: February 23, 2016
    Assignee: HYDAC COOLING GMBH
    Inventor: Andreas Welsch
  • Patent number: 9032747
    Abstract: Obtained is an air-conditioning apparatus that is capable of saving energy. A pressure in a passage of the second refrigerant flow switching device in which a refrigerant from an outdoor unit flows into is higher than a pressure in a passage of the second refrigerant flow switching device in which the refrigerant flows out to the outdoor unit regardless of switching states of a first refrigerant flow switching device, the second refrigerant flow switching devices, and a third refrigerant flow switching device.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: May 19, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Yamashita, Hiroyuki Morimoto, Yuji Motomura, Takeshi Hatomura
  • Patent number: 9010136
    Abstract: The invention relates to a method for operating a refrigerating installation, according to which the cooling liquid temperature is controlled and stabilized upstream of the expansion valve, and the suction vapor temperature is controlled and stabilized upstream of the condenser in dry expansion systems, thermosyphon installations, two-stage evaporation installations, dry expansion installations having a downstream internal heat exchanger (IWT), and all other refrigerating systems.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: April 21, 2015
    Assignee: BMS-Energietechnik AG
    Inventor: Remo Meister
  • Patent number: 8991199
    Abstract: A heat pump system includes: a heat-source-side refrigerant circuit having a heat-source-side compressor, a first usage-side heat exchanger operable as a radiator of heat-source-side refrigerant, and a heat-source-side heat exchanger operable as an evaporator of heat-source-side refrigerant; and a usage-side refrigerant circuit having a usage-side compressor arranged to compress usage-side refrigerant with a pressure of the usage-side refrigerant corresponding to a saturated gas temperature of 65° C. that is 2.8 MPa or less at gauge pressure, a refrigerant-water heat exchanger operable as a radiator of usage-side refrigerant to heat an aqueous medium, and a first usage-side heat exchanger operable as an evaporator of usage-side refrigerant by the radiation of heat-source-side refrigerant. The weight of usage-side refrigerant enclosed in the usage-side refrigerant circuit is one to three times the weight of refrigeration machine oil enclosed to lubricate the usage-side compressor.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: March 31, 2015
    Assignees: Daikin Industries, Ltd., Daikin Europe N.V.
    Inventor: Masahiro Honda
  • Patent number: 8984901
    Abstract: A heat pump system includes: a heat-source-side refrigerant circuit having a heat-source-side compressor, a first usage-side heat exchanger operable as a radiator of heat-source-side refrigerant, and a heat-source-side heat exchanger operable as a radiator of heat-source-side refrigerant; and a usage-side refrigerant circuit having a usage-side compressor, a refrigerant/water heat exchanger operable as a radiator of usage-side refrigerant to heat an aqueous medium, and the first usage-side heat exchanger operable as an evaporator of usage-side refrigerant by radiation of heat-source-side refrigerant.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: March 24, 2015
    Assignees: Daikin Industries, Ltd., Daikin Europe N.V.
    Inventor: Masahiro Honda
  • Patent number: 8978401
    Abstract: A data center cooling system may include heat transfer equipment to cool a liquid coolant without vapor compression refrigeration, and the liquid coolant is used on a liquid cooled information technology equipment rack housed in the data center. The system may also include a controller-apparatus to regulate the liquid coolant flow to the liquid cooled information technology equipment rack through a range of liquid coolant flow values based upon information technology equipment temperature thresholds.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: March 17, 2015
    Assignee: International Business Machines Corporation
    Inventors: Timothy J. Chainer, Hien P. Dang, Pritish R. Parida, Mark D. Schultz, Arun Sharma
  • Patent number: 8978741
    Abstract: A device for reducing temperature variation in a plenum includes at least one pipe and a plurality of sumps containing a fluid operable to vary between a liquid state and a gaseous state depending upon a temperature of the fluid. The plurality of sumps are positioned at various locations within the plenum and the at least one pipe is in fluid communication with the plurality of sumps. In addition, the fluid, in the gaseous state, is caused to move through the at least one pipe and condense, thereby reducing the temperature at the location of the sump where the fluid was vaporized and thereby reducing temperature variation in the plenum.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: March 17, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ratnesh K. Sharma, Cullen E. Bash, Chandrakant D. Patel, Abdlmonem Beitelmal
  • Patent number: 8939196
    Abstract: A secondary pump-type heat source system includes: heat sources connected in parallel; a load system in which the heat source water flows; a primary pump supplying the heat source water to the load system; a secondary pump provided for each heat source and supplies the heat source water subjected to heat exchange in the load system to the heat source; and a heat source controller calculating flow quantity of the heat source water flowing in the heat source side and flow quantity of the heat source water flowing in the load system side by assigning a result from measurement by a water temperature sensor detecting heat source temperature to an operating characteristic of each heat source and controlling operation of the secondary pumps based on the calculation result.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: January 27, 2015
    Assignee: Toshiba Carrier Corporation
    Inventors: Takeru Morita, Yuuji Matsumoto, Seiji Tsukiyama, Manabu Yamamoto
  • Patent number: 8833093
    Abstract: A method of controlling temperature in a compartment of a refrigerator is disclosed. During a normal operation of the refrigerator, the compartment is cooled by a temperature control circuit operated in accordance with a predetermined thermodynamic cycle. The method includes the steps of measuring a variable parameter of the compartment, and comparing the variable parameter with a threshold, and if the variable parameter is greater than the threshold, continuing to operate the temperature control circuit in accordance with the predetermined thermodynamic cycle.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: September 16, 2014
    Assignee: General Electric Company
    Inventor: Ronald Scott Tarr
  • Patent number: 8833091
    Abstract: A method and system for condensing water from ambient air. A dew extracting device with a dew extraction zone having surfaces has the surfaces chilled to below dew temperature for a first period of time. An air moving device directs a flow of air over the chilled surfaces so that liquid water condenses on the surfaces, raising the temperature of the surfaces. The chilling of the surfaces is terminated for a second period of time and liquid water is removed from the surfaces and heat of condensation is removed from the dew extraction zone. Then the process repeats to obtain additional liquid water.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: September 16, 2014
    Inventor: Robert P. Biancardi
  • Patent number: 8820113
    Abstract: To reduce power consumption and more efficiently cool computing devices in a data center, an air supply unit supplies air from outside the data center to an air handling unit, which cools servers within the data center using the supplied air. Using air from outside the data center, rather than recirculating and cooling air from within the data center, reduces the power consumption of the data center. In an embodiment, a chiller and/or an evaporative cooling system are coupled to the air supply unit to allow further cooling of the outside air before it is circulated. Heat generated by the servers within the data center is collected, for example using thermal pathways coupled to server components, and used by the chiller in an absorption or adsorption process to further reduce power consumption of the data center and allow the air handling unit to further cool the outside air.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: September 2, 2014
    Assignee: Facebook, Inc.
    Inventors: Ali Heydari, Marco Magarelli
  • Patent number: 8820106
    Abstract: A heat source-side refrigerant circuit A including a compressor 11, an outdoor heat exchanger 13, a first refrigerant branch portion 21 connected to the compressor 11, a second refrigerant branch portion 22 and a third refrigerant branch portion 23 connected to the outdoor heat exchanger 13, a first refrigerant flow rate control device 24 provided between branch piping 40 and the second refrigerant branch portion 22, intermediate heat exchangers 25n connected at one side thereof to the first refrigerant branch portion 21 and the third refrigerant branch portion 23 via three-way valves 26n and connected at the other side thereof to the second refrigerant branch portion 22, and second refrigerant flow rate control devices 27n provided between the respective intermediate heat exchangers 25n and the second refrigerant branch portion 22, and user-side refrigerant circuits Bn having indoor heat exchangers 31n connected respectively to the intermediate heat exchangers 25n are provided, and at least one of water and
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: September 2, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinichi Wakamoto, Koji Yamashita, Takashi Okazaki, Naoki Tanaka, Keisuke Hokazono, Hiroyuki Morimoto, Yuji Motomura, Takeshi Hatomura, Tomohiko Kasai, Naofumi Takenaka, Yusuke Shimazu
  • Patent number: 8752397
    Abstract: In an air-conditioning apparatus, a heat source side heat exchanger 12, intermediate heat exchangers 15a and 15b, and use side heat exchangers 26a to 26d are separately formed and adapted to be disposed at separate locations, respectively. There are provided a defrosting operation function to melt frost attached around the heat source side heat exchanger 12, and a heating function during defrosting operation that drives a pump 21a to circulate a heat medium and supply heating energy to the use side heat exchangers 26a to 26d in need of heating to perform heating operation. The defrosting operation function can be executed by switching a four-way valve 11 to cooling side to introduce a high-temperature high-pressure refrigerant flowed out of the compressor 10 into the heat source side heat exchanger 12.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: June 17, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Yamashita, Hiroyuki Morimoto, Yuji Motomura, Takeshi Hatomura
  • Patent number: 8733115
    Abstract: A method for controlling freezing capacity of a variable-frequency freezing AC ice-water system separates the freezing capacity of each individual requirement end so as to reduce sudden or peak concentrating freezing demand and relieve variable-frequency load demand, and defines operating procedures corresponding to different requirement ends, respectively, wherein each of the operating procedures has a corresponding high-low temperature range that can be used as a temperature buffer zone so as to redistribute supply of the freezing capacity to each requirement end, thereby allowing the compressors thereof to operate smoothly and thus achieve energy saving as a result. The drawbacks of damaged pipelines are overcome that cause deficiency in freezing capacity as encountered in prior techniques.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: May 27, 2014
    Assignee: Chunghwa Telecom Co., Ltd.
    Inventors: Shyang-Yih Chen, Yu-Huan Wang, Chen-Kun Hsu, Ming-Hsien Pan, Pin-Chuan Chen, Ya-Ru Yang, Yan-Shao Lin
  • Patent number: 8667804
    Abstract: Thermal storage air conditioner including an outdoor unit having an outdoor heat exchanger for making heat exchange, and at least one compressor for compressing refrigerant, an indoor unit having at least one indoor heat exchanger for making heat exchange, a thermal storage unit having a thermal storage tank for holding thermal storage substance therein, a thermal storage heat exchanger for receiving refrigerant from an outside of the thermal storage unit to heat exchange with the thermal storage substance in the thermal storage tank, and a securing member for securing the thermal storage heat exchanger so as to maintain the thermal storage heat exchanger submerged under the thermal storage substance in the thermal storage tank, and a functional unit for selective control of refrigerant flows among the outdoor unit, the indoor unit and the thermal storage unit according to an operation condition, thereby maintaining the thermal storage heat exchanger in the thermal storage tank securely, to prevent drop of he
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: March 11, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jae Yoon Koh, In Kyu Kim, Jin Ha Hwang
  • Patent number: 8607855
    Abstract: The invention relates to an air-conditioning system for a motor-driven vehicle, having a refrigerant circuit (20) with a plurality of heat exchangers (4, 24) through which a refrigerant can be conducted for an exchange of heat with the air which flows through them, with it being possible for the heat exchangers (4, 24) to be operated as heaters or as evaporators as a function of the operating state of the air-conditioning system, and at least one third heat exchanger (16) is provided in the refrigerant circuit (20), which third heat exchanger (16) serves for an exchange of heat with a coolant circuit (13) which is formed separately from the refrigerant circuit (20). The vehicle can be both a motor vehicle and also a fuel-cell-driven vehicle.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: December 17, 2013
    Assignees: Behr GmbH & Co. KG, Behr America, Inc., Behr France Rouffach SAS
    Inventors: Günther Feuerecker, Karl Lochmahr, Frank Müller, Dirk Neumeister, Thomas Strauβ, Marcus Weinbrenner, Richard Obradovich, Gunnar Schlinke, Christophe Schmittheisler
  • Patent number: 8590328
    Abstract: A refrigeration system with a multi-function heat exchanger has a first heat exchanger with an internal partition defining a condenser, a subcooler and an evaporator. An expansion device is located external of the heat exchanger and receives condensed refrigerant from the subcooler and provides expanded refrigerant to the evaporator. A compressor circulates the refrigerant through the condenser, the subcooler, and the evaporator. A secondary coolant circulates through the subcooler, the evaporator and the loads. A control system receives refrigerant temperature and pressure signals, and provides a control signal to the expansion device to maintain a temperature of the refrigerant within a predetermined range. A second heat exchanger cools a condensing fluid circulating through the condenser to condense the refrigerant.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: November 26, 2013
    Assignee: Hill Phoenix, Inc.
    Inventors: John D. Bittner, Philip A. Stephenson
  • Publication number: 20130213067
    Abstract: A heat source device is provided with a differential pressure sensor that measures the differential pressure between an inlet pressure and an outlet pressure for the chilled water in an evaporator and with a control device. The control device possesses the coefficient of loss for the evaporator and is provided with a chilled-water flow-rate computing portion that calculates a chilled-water flow rate at the evaporator on the basis of the coefficient of loss and the differential pressure output from the differential pressure sensor; a control-command computing portion that generates a control command by using a specification heating-medium flow rate that is set in advance; and a control-command correcting portion that corrects the control command generated by the control-command computing portion.
    Type: Application
    Filed: October 27, 2011
    Publication date: August 22, 2013
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuki Wajima, Kenji Ueda, Masaharu Nitta
  • Patent number: 8501060
    Abstract: For controlling temperature in the molding of plastics, metal, ceramic, or die-casting, a circulator supporting a molding machine includes a fixed displacement pump driven by an electronic servo motor for volumetric metering of thermal fluid to or from the molding machine. A pre-set or dynamically controlled volume and flow rate profile matches the heating and cooling requirement of a molding machine and process. Volumetric metering may be based on parameters such as time, machine cycle status, temperature, pressure, and/or flow rate. Fluid may be circulated through the mold at positive or negative pressure at fixed, variable, or pulsed flow. The supply side in a fluid loop may be restricted so as to cause a pressure drop in or upstream of the mold, die or barrel, and seed bubbles may be injected into the fluid flow to excite vaporization and lowering of the fluid temperature.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: August 6, 2013
    Assignee: MoldCool International LLC
    Inventor: Kenneth E. Johnson
  • Patent number: 8448460
    Abstract: A chiller bypass system is provided for deployment onboard a vehicle that includes a battery pack through which a first coolant is circulated. In one embodiment, the chiller bypass system comprises a chiller, a chiller bypass duct fluidly coupled to the battery pack and configured to supply the first coolant thereto, and a chiller bypass valve. The chiller bypass valve includes: (i) a valve inlet fluidly coupled to the battery pack and configured to receive the first coolant therefrom, (ii) a first valve outlet fluidly coupled to the chiller and configured to supply the first coolant thereto, and (iii) a second valve outlet fluidly coupled to the chiller bypass duct and configured to supply the first coolant thereto. The chiller bypass valve selectively directs coolant flow between the first valve outlet and the second valve outlet to adjust the volume of the first coolant cooled by the chiller.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: May 28, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Michael J. Dogariu, Christopher C. Nyeholt
  • Patent number: 8438865
    Abstract: A cooling system (10) for cooling an aircraft device (12) comprises an evaporator (14, 16, 18) for receiving a fluid (F) which is to be evaporated, a first adsorber (24) which contains a medium (28) for the adsorption of the fluid (F) which is evaporated in the evaporator (14, 16, 18), as well as a second adsorber (26) which contains a medium for the adsorption of the fluid (F) which is evaporated in the evaporator (14, 16, 18). A control system (22) is adapted to establish or to interrupt a fluid connection between the evaporator (14, 16, 18) and the first and/or the second adsorber(s) (24, 26).
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: May 14, 2013
    Assignee: Airbus Operations GmbH
    Inventors: Andreas Frey, Ahmet Kayihan Kiryaman, Carsten Colberg, Peter Schwebke, Markus Kerber, Michael Dreyhaupt
  • Patent number: 8439306
    Abstract: A thermal management system comprises a first heat exchanger having an inlet and an outlet, a second heat exchanger having an inlet and an outlet, a fluid loop, a first heat pump, and a second heat pump. The fluid loop circulates a fluid, and forms a continuous path between the first and second heat exchangers. The first heat pump is connected to the fluid loop and is disposed between the outlet of the second heat exchanger and the inlet of the first heat exchanger. The second heat pump is connected to the fluid loop and is disposed between the outlet of the first heat exchanger and the inlet of the second heat exchanger.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: May 14, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventors: George Eugene Wilmot, Jr., Diane G. Drew, Gregory M. Ott
  • Patent number: 8418487
    Abstract: A process-fluid chiller system for chilling a process fluid to be transported to a process load to remove thermal energy from the process load. The process-fluid chiller system includes a storage tank in which the process fluid can be stored, and a refrigeration system that can be selectively activated to chill the process fluid. The refrigeration system includes an evaporation device for evaporating a refrigerant from a liquid state to a gaseous state and a compressor for elevating a pressure of the refrigerant in the gaseous state. A temperature sensor is included for sensing a temperature of an exchange medium to which thermal energy from the process fluid can be transferred when the temperature of the exchange medium falls below a predetermined low temperature.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: April 16, 2013
    Inventor: Martin P. King
  • Patent number: 8365546
    Abstract: A hot water storage type hot water supply system includes a storage battery unit, a heat pump cycle, a water storage tank, a water circulation path, first and second paths, first and second temperature sensors, and a controller. The heat pump cycle circulates a first refrigerant. The first and second paths circulate a second refrigerant. The first and second sensors sense temperatures of the storage battery unit and water stored in the tank, respectively. The controller controls the second refrigerant to flow in the first or the second path when the temperature of the storage battery unit sensed by the first sensor is higher or lower than a first or a second predetermined temperature, respectively. The controller controls to close the first and second paths when the temperature of the storage battery unit sensed by the first sensor is not lower than the second predetermined temperature and not higher than the first predetermined temperature.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: February 5, 2013
    Assignee: Panasonic Corporation
    Inventor: Gaku Hayashida
  • Patent number: 8322154
    Abstract: A cooling system and method are provided for facilitating two-phase heat transfer from an electronics system including a plurality of electronic devices to be cooled. The cooling system includes a plurality of evaporators coupled to the electronic devices, and a coolant loop for passing system coolant through the evaporators. The coolant loop includes a plurality of coolant branches coupled in parallel, with each coolant branch being coupled in fluid communication with a respective evaporator. The cooling system further includes a control unit for maintaining pressure of system coolant at a system coolant supply side of the coolant branches within a specific pressure range at or above saturation pressure of the system coolant for a given desired saturation temperature of system coolant into the evaporators to facilitate two-phase heat transfer in the plurality of evaporators from the electronic devices to the system coolant at the given desired saturation temperature.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: December 4, 2012
    Assignee: International Business Machines Corporation
    Inventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Jr., Madhusudan K. Iyengar, Robert E. Simons
  • Publication number: 20120279249
    Abstract: A temperature maintenance storage comprising a side, a compressor unit, and an insulation pack, with the insulation pack being generally flexible and containing a temperature control fluid. A refrigerant line for conducting a refrigerant extends from the compressor unit and to the insulation pack with the refrigerant line contacting the insulation pack. The insulation pack directly contacts the side and the compressor unit is selectively activated in response to monitored temperatures by a thermostat probe.
    Type: Application
    Filed: July 17, 2012
    Publication date: November 8, 2012
    Inventor: Michael Reihl
  • Patent number: 8272432
    Abstract: A system and method for providing cool air to a passenger compartment of a hybrid vehicle in an engine off mode is disclosed. This may include operating a HVAC system to provide cold refrigerant flowing through an evaporator while an engine is operating, and forcing air through the evaporator to cool the air. A first portion of the cooled air from the evaporator is directed through a heater core and a second portion around the heater core, and an electric water pump is activated to pump coolant from a thermal storage tank, through the heater core and back to the thermal storage tank to cool the coolant. When the engine operation is ceased, the air flow is directed through the heater core, and the coolant is pumped from the thermal storage tank, through the heater core and back to the thermal storage tank to cool the air.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: September 25, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Gregory A. Major, Mark D. Nemesh
  • Patent number: 8246318
    Abstract: Provided is a water-cooled air compressor which is capable of restraining lowering of the performance of a plate type compressor for heat-exchanging compressed air from a compressor body, with cooling water due to clogging of gaps between plates in the heat-exchanger by dust or the like, incorporating a first solenoid valve and a second solenoid valve connected respectively in a cooling water supply pipe line and a cooling water discharge pipe line of the heat-exchanger, an air feed pipe line connecting between a compressed air supply pipe line on the outlet side of the heat-exchanger and the cooling water discharge pipe line, a third solenoid valve and a check valve connected in the air feed pipe line, a discharge pipe line connected in a discharge pipe line 18 so as to branch therefrom, a fourth solenoid valve connected in the discharge pipe line, and a control device for controlling opening and closing of the first to fourth solenoid valves.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: August 21, 2012
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Hideharu Tanaka, Masahiko Takano, Akihiro Nagasaka
  • Patent number: 8220284
    Abstract: A heat storage device that includes a first heat storage material and a second heat storage material, both of which accumulate heat by heat exchange with a heat afferent medium, and a changeover device that selectively either performs or intercepts heat storage by the second heat storage material. Accordingly, if the absorption of heat by the first heat storage material has decreased, the changeover device changes flow of the second heat storage material so that heat may be extracted from the heat afferent medium by the second heat storage medium. Thus, when the heat afferent medium is a refrigerant, it is possible to supercool the refrigerant thereof. Furthermore, since heat is extracted from the heat afferent medium and is accumulated, accordingly it is possible to anticipate effective utilization thereof.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: July 17, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kenji Tsubone
  • Patent number: 8209993
    Abstract: A method of providing cooled air to electronic equipment includes capturing heated air from a volume containing electronic equipment, cooling the heated air by more than fifteen degrees Celsius in an air-to-water heat exchanger, and supplying cooling water to the air-to-water heat exchanger at a temperature above a dew point temperature of the heated air.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: July 3, 2012
    Assignee: Exaflop LLC
    Inventors: Andrew Carlson, William Whitted, Jimmy Clidaras, William Hamburgen, Gerald Aigner, Donald L. Beaty
  • Patent number: 8141623
    Abstract: Disclosed is an automatic switching two pipe hydronic system for conditioning a space. In one embodiment the two pipe hydronic system enables automatic switching from a first mode of operation to a second mode of operation or vice versa in a reduced span of time. The present invention saves fuel, energy and water, when there are lower load conditions that affect boilers, chillers, and cooling towers. In another embodiment, the present invention provides a system for simultaneously heating and cooling a first portion and a second portion of a space by utilizing a plurality of boilers, chillers, heat exchangers, condenser pumps and closed loop pumps by using a plurality of sensors indicating the temperatures inside and outside the space and a controlling module controlling the operation of the system. The present invention can be easily achieved by making minor configurational modifications to existing systems thereby increases system versatility.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: March 27, 2012
    Inventor: Joseph G. Blecker
  • Patent number: 8136367
    Abstract: A hinge assembly and a refrigerator using the assembly are disclosed. The assembly rotatably mounts an access door for a compartment of the refrigerator to part of refrigerator that defines the compartment. The hinge assembly has a body coupled to the part and a hinge manifold supported by the body and slidably received in the access door. The manifold has a first supply conduit for supplying a working medium to an icemaker disposed in the access door and a first return conduit for returning the working medium from the icemaker. The hinge assembly can be manufactured as a separate module to be assembled with the refrigerator or retrofit into an existing refrigerator.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: March 20, 2012
    Assignee: General Electric Company
    Inventors: Steve B. Froelicher, Matthew William Davis, Jeffrey Lynn Jessie, Amit Kurhekar, Joseph Murphy Miller, John Joseph Roetker, Ronald Scott Tarr, Derek Lee Watkins
  • Patent number: 8114321
    Abstract: A method and apparatus are disclosed for managing thermal energy transfer between a mold, die or cavity and a thermal transfer fluid. The thermal energy being exchanged with the mold, die or cavity is calculated in real time as a function of the temperature differential between inlet and outlet fluid temperatures, the volumetric rate of fluid delivery, and known characteristics of the fluid. The rate of thermal energy exchange is controlled by varying the fluid delivery rate in accordance with a desired thermal energy exchange profile.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: February 14, 2012
    Assignee: MoldCool International, LLC
    Inventor: Kenneth E. Johnson
  • Patent number: 8082744
    Abstract: Disclosed is a method for controlling a hot water circulation system associated with a heat pump. The present invention gives a freezing burst prevention operation function to a water-refrigerant heat-exchanger which performs heat exchange between a refrigerant and water, making it possible to remove a phenomenon that the water-refrigerant heat-exchanger installed out of the space where a user lives is frozen to be damaged.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: December 27, 2011
    Assignee: LG Electronics Inc.
    Inventors: Jin Ha Hwang, Jung Il Park
  • Publication number: 20110289952
    Abstract: A hot water supply apparatus associated with a heat pump is provided. The hot water supply apparatus may employ a cascade heat pump including a two-stage cycle to perform a hot water supply operation. Refrigerants flowing through a heat side heat exchanger and a usage side heat exchanger may be heat-exchanged with water. Thus, the hot water supply operation may be continuously performed, without a defrosting operation, and hot water supply performance and heating performance may be improved.
    Type: Application
    Filed: March 31, 2011
    Publication date: December 1, 2011
    Inventors: Byungsoon KIM, Jahyung Koo, Kyongmin Kwon
  • Patent number: 8051809
    Abstract: The invention relates to a system which is used to cool at least one piece of motor vehicle equipment to a low temperature, comprising a heat transfer fluid circulation loop. According to the invention, a low-temperature heat exchanger (60) and at least one equipment exchanger (102) are mounted to the aforementioned circulation loop. The heat exchange surface of the equipment exchanger (102) is divided into at least first and second heat exchange sections (104,106). A first flow (Q<SB>1</SB>) of heat-transfer fluid passes through the first heat exchange section (104), while a second smaller flow (Q2) passes through the second section. The invention is suitable for motor vehicle heat exchangers.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: November 8, 2011
    Assignee: Valeo Systemes Thermiques
    Inventors: Pascal Guerrero, Srun-Ngy Ap, Philippe Jouanny