By External Cooled Gas Patents (Class 62/229)
  • Patent number: 10712742
    Abstract: An autonomous vehicle (AV) can include a predictive sensor configuration system that can dynamically detect reflectance anomalies that affect detectability by sensor array of the AV as the AV travels a current route. The predictive sensor configuration system can dynamically determine one or more configurations for the sensor array to attempt to positively identify the reflectance anomalies, and preemptively execute the one or more configurations for the sensor array as the AV travels the current route.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: July 14, 2020
    Assignee: UATC, LLC
    Inventor: Jean-Sebastien Valois
  • Patent number: 10674870
    Abstract: A food chilling device includes a container body defining a container interior volume configured to contain foodstuff, a lid configured to cover the container interior volume, at least one compartment pivotally coupled to the container body and defining a compartment interior volume configured to contain additional foodstuff, and a refrigeration system coupled to the container body and configured to cool the foodstuff contained within the container interior volume and the additional foodstuff contained within the compartment interior volume.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: June 9, 2020
    Inventor: Dana Joseph
  • Patent number: 10574062
    Abstract: A motor vehicle-mounted system for controlling an air compressor or hydraulic fluid pump is provided. The system can alternatively include a battery box or an engine-driven welder configured for supplying DC power to an electric motor via an electric motor controller. The electric motor can operate an air compressor, which can further include an air tank for storing compressed air. The electric motor can also operate a hydraulic fluid pump for operating a pressurized hydraulic fluid system.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: February 25, 2020
    Inventor: Darryl Weflen
  • Patent number: 10562375
    Abstract: There is disclosed a vehicle air conditioner device of a so-called heat pump system to accurately perform efficient and comfortable heating of a vehicle interior. The vehicle air conditioner device includes a heating medium circulating circuit 23 which heats air to be supplied from an air flow passage 3 to a vehicle interior. A controller calculates a required heating capability TGQhtr of the heating medium circulating circuit to complement a shortage of an actual heating capability Qhp to a required heating capability TGQ of a radiator 4. The controller calculates a decrease amount ?Qhp of the actual heating capability Qhp from a difference ?TXO between a refrigerant evaporation temperature TXO of an outdoor heat exchanger 7 and a refrigerant evaporation temperature TXObase in non-frosting, and adds the decrease amount ?Qhp to the required heating capability TGQhtr to execute the heating by the heating medium circulating circuit.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: February 18, 2020
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventors: Kenichi Suzuki, Ryo Miyakoshi, Kouhei Yamashita, Megumi Shigeta
  • Patent number: 10538211
    Abstract: Methods and systems for providing power from an energy supply source having a limited charge to one or more self-contained climate controlled storage units are disclosed. The power is provided from an energy supply source having a limited charge to one or more self-contained climate controlled storage units in a transport unit. The method includes determining whether to supply power from the enemy supply source to the one or more self-contained climate controlled storage units; supplying power in response to the determining indicating that power is to be supplied; determining whether to continue supplying power from the energy supply source to the one or more self-contained climate controlled storage units; and stopping supplying power in response to the determining whether to continue indicating that power is no longer to be supplied.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: January 21, 2020
    Assignee: Thermo King Corporation
    Inventors: Matthew Srnec, Paul J. Kroes
  • Patent number: 10464393
    Abstract: A system is disclosed. The system includes a climate condition determination module that is configured to determine a climate condition associated with a vehicle based upon an external air temperature or a dew point temperature. The system also includes a compressor operational state control module that is configured to control a plurality of operational states of a variable displacement compressor of a heating, ventilation and air conditioning system within the vehicle. The compressor operational state control module is configured to cause the variable displacement compressor to selectively transition from a variable displacement operational state to a fixed displacement-like operational state when the climate condition exceeds a climate threshold to cause an evaporator of the heating, ventilation and air conditioning system to provide evaporator air having an air temperature corresponding to a target evaporator air temperature.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: November 5, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: George S. Watson, II, Rupesh S. Kakade
  • Patent number: 10315661
    Abstract: Apparatus and methods are disclosed for speed-based window control. An example disclosed vehicle includes a speed sensor and a body control module. When a side window is open, the body control module monitors, via the speed sensor, a speed of the vehicle. In response to the speed of the vehicle satisfying a first speed threshold, the body control module closes the side window and then, after the side window is closed, activates an air conditioner.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: June 11, 2019
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: David Delgado, Kevin Amper, Juan Esteban Rivera, Victor Christian Jaime, Brian Jashel Covarrubias
  • Patent number: 10052936
    Abstract: An HVAC system for a vehicle includes infrared skin temperature sensors for measuring actual skin temperatures of the driver and a cabin temperature sensor for measuring an actual cabin temperature of ambient air within the passenger cabin. A controller module stores a target cabin temperature. The controller module controls the HVAC system according to a first error between the target cabin temperature and the actual cabin temperature. A personalization module stores a target skin temperature, and the personalization module determines an offset to be applied to the target cabin temperature according to a second error between the target skin temperature and the actual skin temperature. Infrared temperature measurements are collected for the left and right sides of a person's face, and the actual skin temperature is selected as the one that deviates most from the actual cabin temperature.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: August 21, 2018
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Kwaku O. Prakah-Asante, Jialiang Le, Manoharprasad K. Rao, Gary S. Strumolo
  • Patent number: 10042016
    Abstract: There is provided an MRI apparatus including a superconducting magnet that includes a refrigerant container and a superconducting coil, a cryogenic cooling system with which the superconducting magnet is provided, and a controller that controls the operation of the cryogenic cooling system. The cryogenic cooling system includes a cold head, a cryo-cooler, a compressor that supplies a compressed gas to the cryo-cooler, and a detection unit that detects the pressure in the refrigerant container, the refrigerant container being provided with the cold head, the cryo-cooler, the compressor, and the detection unit. An upper limit value of the maximum number of times of halts of the compressor within a predetermined period of time is set in advance.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: August 7, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Hikaru Hanada, Takuya Fujikawa, Akihiro Shimada, Kenji Sakakibara
  • Patent number: 9970666
    Abstract: Disclosed herein is an air conditioning system. The conditioning system includes an air handling unit (AHU) configured to control outdoor air that is externally supplied, exhaust air that is outdoors discharged, and return air that is circulated indoors and supplied again, control the outdoor air or mixed air of the return air and the outdoor air at a set temperature, and supply cool/warm supply air indoors, at least one outdoor unit configured to supply a heat source for a heat exchange to the AHU, a controller configured to receive operating state data of the AHU and control an operation of the AHU through communication with the outdoor unit, and an interface unit connected to the controller and configured to output a control menu of the AHU, send data received through the control menu to the controller, and output a monitoring screen for the operating state of the AHU and the outdoor unit.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: May 15, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Sanghye Son, Hyeongyeong Lee
  • Patent number: 9726417
    Abstract: A refrigerator includes a body, first and second storage compartments and a machine compartment formed in the body, a blower fan disposed in the machine compartment, first and second refrigerating units comprising first and second compressors to compress first and second refrigerants, respectively, first and second condensers to condense the first and second refrigerants, respectively, first and second expansion valves to expand the first and second refrigerants, respectively, and first and second evaporators to evaporate the first and second refrigerants, respectively, the first and second refrigerating units supplying cold air to the first and storage compartments, respectively. The first compressor, the second compressor, and the first condenser are disposed in the machine compartment and are cooled by forcible flow of air caused by the blower fan, and the second condenser is disposed outside the machine compartment and is cooled by natural convection of air.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: August 8, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Min Jeon, Sang Soo Kim, Yong Han Kim, Bong Su Son
  • Patent number: 9557092
    Abstract: An occasional use domestic counter top flash freezer. To accomplish this, all aspects of the refrigeration process have been scaled down into a unique and economical flash freezer for the home, here to for unavailable to the consumer. A refrigeration engine is contained within a light weight and low cost enclosure; and chills a diminutive cold chamber to temperatures substantially below ?18° C. The cold chamber is sized to accommodate a small batch of foodstuffs at a time, such that the rate of heat removal effects flash freezing; the process of preventing formation of large cellular ice crystals. This appliance is an adjunct to a domestic home refrigerator/freezer, enabling the consumer, for the first time, to effectively freeze foodstuffs for later consumption, while not sacrificing taste! Thus, it will do for food preservation what the microwave has done for food preparation in the home.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: January 31, 2017
    Inventor: Edward Robert Heussner
  • Patent number: 9500386
    Abstract: Apparatus and methods are disclosed for a fan controller. The fan controller determines HVAC system type and heating or cooling mode for gas furnace, heat pump, electric resistance, and hydronic heating, ventilating, and air conditioning (HVAC) systems. For gas furnace heating systems, the apparatus and methods include energizing the blower fan from a lower fan speed used for heating by the furnace-fan controller to the high-speed used for cooling by the fan controller after fan-on delay time P1 to increase delivered heating capacity, satisfy the thermostat sooner and save heating energy. For heat pump, electric resistance, and hydronic heating systems the apparatus and methods include energizing the fan relay after a short fan-on delay time P0 based on previous off-cycle duration P11. For all these HVAC systems, the apparatus and methods vary extended fan-off time delay P2 as a function of cool-source operational time P4 or heat-source operational time P3.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: November 22, 2016
    Inventors: John Walsh, Robert J. Mowris
  • Patent number: 9383132
    Abstract: A refrigerator includes a refrigerator cabinet, a fresh food compartment disposed within the refrigerator cabinet, a freezer compartment disposed within the refrigerator cabinet below the fresh food compartment, and first and second French doors operatively connected to the refrigerator cabinet to provide access to the fresh food compartment. There is also a mullion between the fresh food compartment and the freezer compartment, an air inlet and an air outlet proximate a bottom of the first French door, and an air outlet and an air inlet on a front face of the mullion. When the first French door is in a closed position, the air inlet proximate the bottom of the first French door aligns with the air outlet on the front face of the mullion and the air outlet proximate the bottom of the first French door aligns with the air inlet on the front face of the mullion.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: July 5, 2016
    Assignee: Whirlpool Corporation
    Inventors: Patrick J. Boarman, Mark E. Thomas
  • Patent number: 9261107
    Abstract: A centrifugal fan includes a main shroud and a sub shroud. The main shroud is configured to connect upper ends of outer rims of a plurality of blades spaced apart from one another in a circumferential direction of a base. The sub shroud is provided at the upper end of the outer rim of each blade and serves to prevent air from moving from a pressure surface to a negative pressure surface of each blade by passing over an upper end of the blade.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: February 16, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyun Joo Kim, Eung Ryeol Seo, Sang Jin Lee, Ji Hoon Choi
  • Patent number: 9242528
    Abstract: The invention relates to a heat exchanger arrangement for heating of air, with a heat exchanger (8) which is integrated into a refrigerant circuit (60), configured to be able to have refrigerant flow through it and able to be impinged on by air. The heat is transferred from the refrigerant to the air. The heat exchanger (8) exhibits two components (8a, 8b) configured to be segregated from each other. The first component (8a) is configured with a condensation surface and a heat-removal surface. The second component (8b) exhibits a supercooling surface. Between the components (8a, 8b) on the refrigerant side, a refrigerant phase separation element is placed. The heat exchanger is configured as a tubular heat exchanger with tubes situated in rows, wherein the first component (8a) is configured with at least two rows and the second component (8b) with at least one row.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: January 26, 2016
    Assignee: Hanon Systems
    Inventors: Marc Graaf, Roberto Della Rovere, Navid Durrani
  • Patent number: 9167726
    Abstract: A system and method for cooling a plurality of electronics cabinets having horizontally positioned electronics assemblies. The system includes at least one blower configured to direct air horizontally across the electronics assemblies, and at least one intercooler configured to extract heat from the air flow such that the system is room neutral, meaning that the ambient temperature remains constant during operation of the system. A plurality of chassis backplanes and power supplies may also include an intercooler, wherein the intercoolers are electronically controlled such that the system is room neutral.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: October 20, 2015
    Assignee: Cray Inc.
    Inventors: Gregory W. Pautsch, Eric D. Lakin
  • Patent number: 9131627
    Abstract: A heat dissipating structure with a casing and at least a power-free heat-dissipating device therein is provided. The power-free heat-dissipating device is driven by an air stream outside and inside the casing to rotate. The rotating power-free heat-dissipating device introduces the air stream into the casing and expels the air stream from the casing so as to facilitate circulation favorable for heat dissipation, thereby enhancing heat dissipation, enabling power-free operation, and serving a power-saving purpose.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: September 8, 2015
    Assignee: Asia Vital Components Co., Ltd.
    Inventor: Ching Hang Shen
  • Patent number: 9051935
    Abstract: A single-screw compressor includes a screw rotor, a cylinder wall in which the screw rotor is rotatably accommodated, a driving mechanism which variably drives the screw rotor according to a load, and a slide valve which is provided in a slide groove formed in the cylinder wall. The slide valve faces an outer circumferential surface of the screw rotor to be movable in an axial direction, and to adjust a discharge start position by being moved in the axial direction according to the operating capacity. A discharge side end surface of the slide valve extends in a direction corresponding to a screw land of the screw rotor to which the discharge side end surface faces when the slide valve is moved to a position corresponding to a part load operation state.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: June 9, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Mohammod Anwar Hossain, Masanori Masuda, Hiromichi Ueno
  • Patent number: 9003820
    Abstract: A point-of-use food holding cabinet keeps food products hot and cold in different compartments, which are heated and refrigerated respectively. The refrigerated compartment is kept cold using a conventional refrigeration device. The heated compartment is kept hot using an electrically-resistive heater wire. One compartment or shelf of a holding cabinet can be refrigerated while an adjacent compartment can be kept warm.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: April 14, 2015
    Assignee: Prince Castle LLC
    Inventor: Loren Veltrop
  • Patent number: 8931547
    Abstract: A vehicle air conditioning system includes an electric powered refrigerant compressing device, an evaporator, an electric heater, an air temperature determining component, a cabin interior temperature controlling component, an upper limit electric power setting component, and an electric power distribution controller. The evaporator receives refrigerant from the compressing device. The heater is downstream of the evaporator in an air passageway. The determining component determines a first air temperature upstream of the evaporator and a second air temperature between the evaporator and the heater. The controlling component sets a vehicle interior discharge air temperature at a position downstream of the heater to a target temperature. The power setting component sets an upper limit for power supplied to the compressing device and the heater.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: January 13, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tzu-Hsiang Yen, Takayoshi Matsuoka, Takafumi Uehara
  • Patent number: 8753096
    Abstract: A compressor overload protection device utilizes a first electrode of an electric connector to electrically connect a first OLP overload protection loop that is electrically connected to a first power line of an external power source. In addition, a second OLP overload protection loop is connected to a second electrode and a third electrode of the electric connector, and a capacitor is electrically connected between the third electrode and the first electrode. When the operation of the compressor is overloaded, the first and second OLP overload protection loop can provide proper protection mechanism with respect to the first power line and the second power line to prevent a motor of the compressor from being overheated and damaged, and the electrodes of the electric connector can be effectively prevented from exploding.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: June 17, 2014
    Assignee: Rechi Precision Co., Ltd
    Inventors: Wen-Ho Yu, Chen-Nan Chu, Lung-Yi Yeh, Hsueh-Hsien Lu
  • Patent number: 8726680
    Abstract: A refrigerator is provided having a refrigeration system including a variable speed compressor, a condenser, a condenser fan, an evaporator, a variable speed evaporator fan. The refrigerator further includes multiple temperature sensors that communicate with an electronic microprocessor-based control system that in turn controls the operation of the refrigerator system based on the information provided by the multiple temperature sensors.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: May 20, 2014
    Assignee: Electrolux Home Products, Inc.
    Inventors: Dennis Schenk, Karl M. Truitt
  • Patent number: 8667805
    Abstract: An air conditioner for communication equipment is provided. The air conditioner includes an indoor module disposed at an indoor space of a base station having communication equipment and including an indoor heat exchanger and an indoor ventilator, an outdoor module disposed at an outside of the base station and including an outdoor ventilator, a brine cooling cycle including first and second outdoor brine heat exchangers, and first and second brine coolers, the indoor heat exchanger, and a brine pump, which are connected through a brine pipe, a first refrigerant cooling cycle including an expansion valve, the first brine cooler, a compressor, and a first outdoor refrigerant heat exchanger, which are connected through a first refrigerant pipe, and a second refrigerant cooling cycle including an expansion valve, the second brine cooler, a compressor, and a second outdoor refrigerant heat exchanger, which are connected through a second refrigerant pipe.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: March 11, 2014
    Assignee: Chang Jo 21 Co., Ltd.
    Inventor: Hee Tae Park
  • Patent number: 8650894
    Abstract: A system and method is provided to control and operate a compressor to have two or more discrete output capacities in response to an outdoor temperature measurement. During operation of the compressor in an air conditioning or cooling mode, the compressor has a first output capacity in response to the outdoor temperature being greater than a first temperature setpoint and the compressor has a second output capacity in response to the outdoor temperature being less than a second temperature setpoint. During operation of the compressor in a heating mode, the compressor has different output capacities based on the outdoor ambient temperature.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: February 18, 2014
    Assignee: Bristol Compressors International, Inc.
    Inventor: John Willard Tolbert, Jr.
  • Patent number: 8601828
    Abstract: A system and method are provided to control the output capacity of a compressor in response to the outdoor ambient temperature. The outdoor ambient temperature is measured by a sensor. The measured outdoor ambient temperature is then used to control the output capacity of the compressor. The compressor is operated at less than 100% capacity in response to the outdoor ambient temperature being less than or equal to 95° F. If the outdoor ambient temperature reaches a predetermined temperature greater than 95° F., the compressor is then operated at 100% capacity.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: December 10, 2013
    Assignee: Bristol Compressors International, Inc.
    Inventor: Joel Moseley
  • Patent number: 8601827
    Abstract: A space-saving, high-density modular data pod system and an energy-efficient cooling system are disclosed. The modular data pod system includes a central free-cooling system and a plurality of modular data pods, each of which includes a heat exchange assembly coupled to the central free-cooling system, and a distributed mechanical cooling system coupled to the heat exchange assembly. The modular data pods include a data enclosure having at least five walls arranged in the shape of a polygon, a plurality of computer racks arranged in a circular or U-shaped pattern, and a cover to create hot and cold aisles, and an air circulator configured to continuously circulate air between the hot and cold aisles. Each modular data pod also includes an auxiliary enclosure containing a common fluid and electrical circuit section that is configured to connect to adjacent common fluid and electrical circuit sections to form a common fluid and electrical circuit that connects to the central free-cooling system.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: December 10, 2013
    Assignee: Inertech IP LLC
    Inventors: Earl Keisling, John Costakis, Gerald McDonnell
  • Patent number: 8596082
    Abstract: There are provided a refrigerator and a method of controlling the same. When a difference between a temperature of an inside of a freezer compartment and a set temperature is referred to as a first error temperature and when a difference between a temperature of an inside of a refrigerator compartment and the set temperature is referred to as a second error temperature, the method of controlling a refrigerator includes varying stroke of an inverter linear compressor to operate the inverter linear compressor by a maximum output when the first or second error temperature is higher than a maximum output temperature and varying the stroke of the inverter linear compressor at least once in a freezer or refrigerator cycle one period to operate the inverter linear compressor when the first or second error temperature is no more than the maximum output temperature.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: December 3, 2013
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Sung, Chan Ho Chun, Yong Hwan Eom
  • Patent number: 8590327
    Abstract: A refrigerating apparatus for keeping an inside of a storage at a predetermined low-temperature state includes first and second refrigerant circuits including compressors, condensers, decompressors, and evaporators, connected circularly with pipings to form refrigerating cycles, the circuit having a first or second refrigerant sealed therein as a working refrigerant, a first sensor which detects a temperature of a cascade condenser constituted by integrating the evaporator of the first refrigerant circuit and the condenser of the second refrigerant circuit in a heat exchangeable manner, first and second controllers which control operation performances of the first and second compressors in a variable manner based on first and second sensor detected temperatures in order that the first and second sensor detected temperatures are first and second temperatures, respectively, and a second sensor which detects a temperature inside the storage.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: November 26, 2013
    Assignee: Panasonic Healthcare Co., Ltd.
    Inventors: Ryuzo Tobe, Tetsuo Sakurai, Ryuichi Tsuruma
  • Patent number: 8555663
    Abstract: A refrigerating apparatus includes first and second refrigerant circuits including respective first and second compressors, condensers, pressure reducers, and evaporators, connected circularly with first and second refrigerant pipes, respectively, refrigerants discharged from the first and second compressors being respectively condensed at the first and second condensers and thereafter respectively evaporated at the first and second evaporators to acquire a cooling effect; a temperature sensor that detects a temperature of an internal portion of a cold storage cabinet, the first and second evaporators being disposed to cool the internal portion simultaneously; and a first control device that controls the first and second compressors such that both of them are operated each time a temperature detected by the temperature sensor reaches a first temperature, and the first and second compressors are alternately operated each time a temperature detected by the temperature sensor reaches a second temperature lower t
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: October 15, 2013
    Assignee: Panasonic Healthcare Co., Ltd.
    Inventors: Hidetoshi Shinya, Susumu Kobayashi, Satoshi Okuda, Ryuichi Tsuruma, Yuichi Tamaoki, Ryuzo Tobe
  • Patent number: 8528353
    Abstract: There are provided a refrigerator and a method of controlling the same. The method of controlling a refrigerator includes varying stroke of an inverter linear compressor to operate the inverter linear compressor by a maximum output when a temperature of an inside of a freezer compartment or a refrigerator compartment is higher than a maximum output temperature and varying the stroke of the inverter linear compressor at one period interval to operate the inverter linear compressor when the temperature of the inside of the freezer compartment or the refrigerator compartment is no more than the maximum output temperature.
    Type: Grant
    Filed: January 26, 2008
    Date of Patent: September 10, 2013
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Sung, Chan Ho Chun, Chang Oh Kim
  • Patent number: 8499574
    Abstract: While an inverter compressor 32 is driven in a control range, an actual temperature drop S is calculated based on a detected inside temperature TR at every predetermined sampling time. Further, a target temperature drop Ac for the inside temperature TR is taken out of data on a cooling characteristic Xc. If the actual temperature drop S is smaller than the target temperature drop Ac, the inverter compressor 32 is controlled to increase a speed thereof. If it is larger, the inverter compressor 32 is controlled to decrease the speed. Inside of a cold storage is cooled down along the cooling characteristic Xc through those controls. Especially after the inside temperature TR has decreased from an upper limit temperature TH and reached the target temperature To, the speed of the inverter compressor 32 is controlled such that the target temperature drop remains at substantially zero (cooling characteristic Xc2).
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: August 6, 2013
    Assignee: Hoshizaki Denki Kabushiki Kaisha
    Inventors: Yoshiyasu Suzuki, Hiroshi Yano
  • Patent number: 8484989
    Abstract: The refrigeration system has an energy saving operation mode performing: a first action in which a compressor (11) and an internal fan (16) are driven while the cooling capacity of an evaporator (14) is regulated; a second action in which, when the blow-off-side air temperature in a cold storage is kept at a set value in the first action, the cooling capacity of the evaporator (14) is increased to lower the blow-off-side air temperature to a lower limit temperature of a desired temperature range containing the set value and the compressor (11) and the internal fan (16) are then stopped; and a third action in which, when the blow-off-side air temperature after the second action rises to an upper limit temperature of the desired temperature range, the first action is restarted.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: July 16, 2013
    Assignee: Daikin Industries, Ltd.
    Inventor: Shigeto Tanaka
  • Patent number: 8467936
    Abstract: A climate control system and method for optimizing energy consumption in a hybrid electric vehicle (HEV) is provided. By varying evaporator temperatures based on occupant settings and environmental conditions, electric compressor speed can be optimized to provide the necessary cooling capacities resulting in energy savings. Determining the impact that increasing or decreasing engine cooling fan speed has on the overall energy consumption of the climate control system without affecting target discharge air temperature provides for energy saving opportunities. Optimizing energy consumption according to the provided strategy provides for improved fuel economy without sacrificing passenger comfort.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: June 18, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Halim Wijaya, Gerhard A. Dage, Wayne Frank Buescher, Christopher Mark Greiner
  • Publication number: 20130125573
    Abstract: Provided is a heat source system that includes two heat source devices connected in series to a heat medium and can be efficiently operated. A heat source system (1) reduces the temperature of chilled water that is guided from a cooling load and has a predetermined return temperature Tr, to a predetermined supply temperature Ts, and supplies the chilled water to the cooling load. The heat source system (1) includes: a second centrifugal chiller (TR2) that reduces the temperature of the chilled water from the return temperature Tr to an intermediate temperature T2; a first centrifugal chiller (TR1) that reduces the temperature of the chilled water that has been reduced to the intermediate temperature T2 by the second centrifugal chiller (TR2), to the supply temperature Ts; and a control unit (9) that variably sets the intermediate temperature T2.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 23, 2013
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoshi Nikaido, Kazuki Wajima, Akimasa Yokoyama, Masanobu Sakai
  • Patent number: 8336323
    Abstract: 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: Grant
    Filed: October 2, 2009
    Date of Patent: December 25, 2012
    Assignee: Johnson Controls Technology Company
    Inventors: Konstantin Borisov, Zhiqiao Wu, Michael S. Todd, Justin Drew Warner, Shreesha Adiga Manoor, Ivan Jadric, Scott Victor Slothower, Kanishk Dubey, John C. Hansen
  • Patent number: 8297067
    Abstract: A space-saving, high-density modular data pod system and an energy-efficient cooling system for cooling electronic equipment and method of cooling are disclosed. The cooling system includes a free-cooling system cooling a first fluid in thermal communication with the electronic equipment using atmospheric air and a mechanical sub-cooling system coupled to the free-cooling system. The mechanical system cools a second fluid flowing in the free-cooling system as a function of an amount by which the free-cooling system has exceeded its maximum cooling capacity. The method of cooling includes using a first fluid, enabling heat transfer from the first fluid to a second fluid that has been cooled using atmospheric air, and mechanically cooling the second fluid to the extent that free cooling the first fluid is insufficient to cool the first fluid. The cooling system operates by the wet bulb temperature exceeding a first predetermined wet bulb temperature.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: October 30, 2012
    Assignee: IETIP LLC
    Inventors: Earl Keisling, John Costakis, Gerald McDonnell
  • Patent number: 8256238
    Abstract: An air conditioning system for a vehicle has a refrigerant cycle device which has an evaporator and a compressor and in which refrigerant is discharged from the compressor to be evaporated in the evaporator so that air passing the evaporator is cooled to be blown into a passenger compartment of the vehicle. The control unit drives the compressor at a control value which is determined based on at least one of a pressure of the refrigerant in the refrigerant cycle device and an outside-air temperature outside the passenger compartment, when the control unit actuates the compressor.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: September 4, 2012
    Assignee: Denso Corporation
    Inventors: Katsuhiko Honda, Takeshi Wakisaka
  • Patent number: 8234878
    Abstract: An air-conditioning system (1) for an environment, in particular for the passenger compartment of a vehicle, is provided with an evaporator (13) and a compressor (18) coupled to the evaporator (13). In a system (30) for controlling the air-conditioning system (1), a control electronics (33) switches an operating condition of the compressor (18) when the temperature of the air leaving the evaporator (13) has a pre-set relation with a threshold temperature (Tthresh). The control electronics varies the value of the threshold temperature (Tthresh) as a function, in at least certain operating conditions, of a set-point temperature (Tsp), required by a user of the air-conditioning system (1), so as to reduce the energy consumption associated to the air-conditioning system.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: August 7, 2012
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Stefano Mola, Carloandrea Malvicino
  • Patent number: 8223025
    Abstract: A measurement indicative of a temperature of a computer is received and a thermal health value for the computer is calculated based on the measurement.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: July 17, 2012
    Assignee: Exaflop LLC
    Inventors: David W. Stiver, Shawn Lewis, Gregory P. Imwalle
  • Patent number: 8104299
    Abstract: An air conditioner includes an indoor heat exchanger (radiator) and a controller. The radiator causes heat radiation to be performed with respect to air from a supercritical refrigerant during heating operation. The controller controls a room temperature by causing a high-pressure side pressure and a refrigerant outlet temperature of the radiator to reach respective target values. Preferably, the controller detects a refrigerant outlet temperature of the radiator with an outlet temperature sensor and detects a room temperature with a room temperature sensor. The controller increases or decreases a target value of the high-pressure side pressure when the controller has judged that there is an excess or a deficiency of capacity in view of the room temperature inside a room that is to be heated even when the refrigerant outlet temperature of the radiator has reached a target value during heating.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: January 31, 2012
    Assignee: Daikin Industries, Ltd.
    Inventors: Tetsuya Okamoto, Shinichi Kasahara
  • Patent number: 8037700
    Abstract: An air conditioning system that comprises a controller that is in electrical communication with a compressor, a condenser fan, a temperature sensor that measures the temperature of the ambient air, a temperature sensor that measures the temperature of a condenser coil of the air conditioning system, and a low pressure switch (LPS) that measure the pressure of a refrigerant disposed within the air conditioning system. An algorithm resident on the controller controls the controller to enter a low ambient cooling mode when the temperature of the ambient air is less than a set temperature. The algorithm further controls the controller so that a minimum and/or maximum cycling frequency is imposed on the condenser fan.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: October 18, 2011
    Assignee: Carrier Corporation
    Inventors: Rajendra K. Shah, Eugene L. Mills, Lynn A. Turner
  • Patent number: 7971444
    Abstract: In an electric refrigeration appliance having at least one refrigeration compartment, a refrigerating arrangement having an evaporator, and a control device that controls the refrigeration compartment temperature and that has a temperature sensor; the temperature sensor is located away from the evaporator and in a portion of a refrigeration compartment volume selected with the exclusion of a first top portion of the refrigeration compartment having a volume equal to roughly 8-10% of the total internal volume of the refrigeration compartment, and with the exclusion of a second front portion of a depth equal to at least 10% of the total inside depth of the refrigeration compartment.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: July 5, 2011
    Assignee: ITW Industrial Components S.R.L.
    Inventor: Roberto Malpetti
  • Patent number: 7971442
    Abstract: The present invention relates to a method for controlling a vehicle air-conditioner, which can prevent undershoot of an evaporator by performing a maximum capacity control or controlling an discharge capacity of a compressor through the outputting of an discharge capacity control value of the compressor directly before the stop of the air conditioner, and can improve the pleasant feelings of the passengers by preventing delay of response, which converges into the target temperature of the evaporator due to the delay of the decrease of the temperature of the evaporator.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: July 5, 2011
    Assignee: Halla Climate Control Corporation
    Inventors: Jeonghoon Lee, Saewon Oh
  • Patent number: 7946123
    Abstract: A system is provided to control and operate a compressor to have two or more discrete output capacities in response to an outdoor temperature measurement. During operation of the compressor in an air conditioning or cooling mode, the compressor has a first output capacity in response to the outdoor temperature being greater than a first temperature setpoint and the compressor has a second output capacity in response to the outdoor temperature being less than a second temperature setpoint.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: May 24, 2011
    Assignee: Bristol Compressors International, Inc.
    Inventors: John W. Tolbert, Jr., Scott G. Hix, David T. Monk, Jerry D. Edwards
  • Publication number: 20110100035
    Abstract: A refrigerant system has a refrigerant circuit comprising a compressor for compressing a refrigerant and delivering it downstream to a condenser. A bypass line is provided around the condenser for selectively allowing at least a portion of refrigerant to bypass the condenser. Valves are provided on a line leading to the condenser and on the bypass line to individually control the flow of refrigerant. An expansion device is located downstream of the condenser, and an evaporator is located downstream of the expansion device. A reheat cycle is incorporated into the system. The reheat cycle includes a valve for selectively delivering at least a portion of refrigerant through a reheat heat exchanger, which is positioned in the path of air downstream of the evaporator. A control is provided for the system to achieve a desired level of dehumidification and temperature control to air being delivered into the environment to be conditioned.
    Type: Application
    Filed: October 12, 2010
    Publication date: May 5, 2011
    Inventors: Michael F. Taras, Alexander Lifson, Michael L. Balistreri
  • Patent number: 7895851
    Abstract: A method for controlling the humidity inside a refrigerator, having at least a cavity and a refrigeration circuit including an evaporator and a compressor, comprising the step of measuring the relative humidity level inside the cavity, measuring the temperature of the evaporator and feeding the above measured values to a control algorithm capable of driving the refrigeration circuit in order to maintain substantially constant the average level of relative humidity and corresponding to a set value.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: March 1, 2011
    Assignee: Whirlpool Corporation
    Inventors: Lorenzo Bianchi, Alessandro Boer, Enrica Monticelli, Raffaele Paganini
  • Publication number: 20100223941
    Abstract: An air conditioning system that comprises a controller that is in electrical communication with a compressor, a condenser fan, a temperature sensor that measures the temperature of the ambient air, a temperature sensor that measures the temperature of a condenser coil of the air conditioning system, and a low pressure switch (LPS) that measure the pressure of a refrigerant disposed within the air conditioning system. An algorithm resident on the controller controls the controller to enter a low ambient cooling mode when the temperature of the ambient air is less than a set temperature. The algorithm further controls the controller so that a minimum and/or maximum cycling frequency is imposed on the condenser fan.
    Type: Application
    Filed: January 22, 2007
    Publication date: September 9, 2010
    Inventors: Rajendra K. Shah, Eugene L. Mills, Lynn A. Turner
  • Patent number: 7788938
    Abstract: The invention relates to a method for regulating a coolant circuit (2) of a vehicle air conditioning system (4). According to said method, a target value (SW(VT)) for an evaporator temperature (VT) is predetermined in a base control circuit. Said value is used to determine a control value (U) for controlling the evaporator temperature (VT) by means of an evaporator temperature regulator (16). Said control value is also fed to a ventilator fan controller (26).
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: September 7, 2010
    Assignee: Behr GmbH & Co. KG
    Inventors: Wilhelm Baruschke, Armin Britsch-Laudwein, Karl Lochmahr
  • Patent number: 7762093
    Abstract: A variable capacity air conditioner compressor is controlled by setting a car target indoor temperature; sensing car indoor and outdoor temperatures and solar radiation with sensors at predetermined car positions; calculating a vent target discharge temperature using the target temperature, sensed car temperatures and solar radiation; calculating a target evaporator temperature and blower voltage based on target discharge temperature; calculating a control duty based on the target evaporator temperature; calculating target evaporator temperature and blower voltage change rates; determining whether or not the compressor conies under a sudden variable condition based on the control duty, and target evaporator temperature and blower voltage change rates; and setting a control duty change rate maximum value to an accelerative slew rate greater than and equal to a basic slew rate when sudden and not sudden variable conditions are respectively determined.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: July 27, 2010
    Assignee: Halla Climate Control Corp.
    Inventors: Jeong-Hoon Lee, Young-Kil Kim, Tae-Eun Kim