Cooling Fluid For Heat Rejecter, E.g., Condenser Patents (Class 62/183)
  • Patent number: 10816260
    Abstract: A refrigeration apparatus including an enclosure with an opening and condenser coils disposed within the enclosure, a cover plate dimensioned to fit over the opening, and with an air-cleaning blower apparatus placed over an orifice in the cover plate. The orifice in the cover plate is in communication with the interior of the enclosure holding the condenser coils, with the air-cleaning blower apparatus positioned in the incoming air stream to remove contaminants from the incoming air stream before the incoming air stream contacts the condenser coils. The cover plate may also have ports for introducing compressed air into the enclosure and for applying a vacuum to the enclosure, as well as an indicator for signaling the need for cleaning the condenser coils.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: October 27, 2020
    Assignee: CoilPod LLC
    Inventor: Richard P. Fennelly
  • Patent number: 10697683
    Abstract: A method of controlling a refrigeration system having a compressor, a condenser, an evaporator, and a variable speed condenser fan is provided. The method includes determining if a change in an ambient temperature or a compressor suction pressure is greater than a predetermined threshold, determining a near-optimal condensing pressure/temperature if the change in the ambient temperature or the compressor suction pressure is above the predetermined threshold, setting a condensing pressure setpoint based on the determined near-optimal condensing pressure/temperature, and setting a speed of the variable speed condenser fan based on the condensing pressure setpoint.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: June 30, 2020
    Inventors: Jian Sun, Linhui Chen
  • Patent number: 10656110
    Abstract: A temperature control system includes first and second temperature control devices. In the first temperature control device, a refrigeration circuit of a refrigeration device, which is positioned downstream of an expansion valve and upstream of an evaporator, and a brine circulation path of a brine circulation device, which is positioned on a heating unit, constitutes a refrigeration capacity adjustment mechanism, and cooling is performed by the evaporator of the refrigeration circuit. In the second temperature control device, a refrigeration device includes an injection circuit that bypasses a condensed refrigerant upstream of a compressor, and a hot gas circuit that bypasses a compressed high-temperature refrigerant upstream of a compressor. A part of the brine circulation path of the brine circulation device and an evaporator of the refrigeration device constitute a heating capacity adjustment heat exchanger, and heating or cooling is performed by a load unit of the brine circulation path.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: May 19, 2020
    Assignee: Shinwa Controls Co., Ltd.
    Inventors: Kazunari Higashida, Hirofumi Komori, Yoshiyuki Okamoto, Hideaki Furumoto, Tomoaki Ito, Hiroki Mori, Go Shiotsuki, Kouji Suzuki
  • Patent number: 10612810
    Abstract: A method for controlling an air conditioner outdoor unit comprises: acquiring the working mode of the air conditioner outdoor unit; acquiring sensor parameters of the air conditioner outdoor unit according to the working mode, the sensor parameters including wind direction parameters read by a wind direction sensor (163) or temperature parameters read by a temperature sensor (161); determining control parameters for the air conditioner outdoor unit by the working mode and the sensor parameters corresponding to the working mode; driving the rotating speed of a fan (121) and the rotating angle of a wind direction adjusting device (125) by use of the control parameters. In addition, a control system for the air conditioner outdoor unit is also related to.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: April 7, 2020
    Inventors: Xuefen Zhang, Zhigang Zhao, Peng Ren, Shiyong Jiang, Keqin Liu, Chongyang Feng, Jinrong Yuan, Yingyi Jiang
  • Patent number: 10598448
    Abstract: A drive system for driving a fan in a wet cooling tower, wherein the fan has a fan hub and fan blades attached to the fan hub. The drive system has a high-torque, low speed permanent magnet motor having a motor casing, a stator and a rotatable shaft, wherein the rotatable shaft is configured for connection to the fan hub. The drive system includes a variable frequency drive device to generate electrical signals that effect rotation of the rotatable shaft of the motor in order to rotate the fan.
    Type: Grant
    Filed: August 4, 2018
    Date of Patent: March 24, 2020
    Assignee: Prime Datum, Inc.
    Inventors: Patrick M. Rollins, George Lucas
  • Patent number: 10563883
    Abstract: A heating, ventilation, and air conditioning (HVAC) system is configured to receive a signal from a thermostat. The signal instructs the HVAC system to operate a component in a partial load mode. The HVAC system is further configured to determine that the component has exceeded its operating envelope. In response to determining that the component has exceeded its operating envelope, the HVAC system is configured to operate the component according to an override configuration. The override configuration overrides the signal to operate the component in the partial load mode.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: February 18, 2020
    Assignee: Lennox Industries Inc.
    Inventors: Walter Davis, II, Roger Hundt, Colin Clara, Eric Perez
  • Patent number: 10469002
    Abstract: An ECM motor, including: a motor controller and a motor body. A microprocessor of the motor controller is connected to a first temperature detecting unit and a second temperature detecting unit disposed at different positions outside the ECM motor for detecting temperatures at the different positions. In operation, when the temperature difference between the first temperature T1 and the second temperature T2 is smaller than or equal to a preset value T0, a first gear at the rotational speed S1 is selected by the microprocessor and the motor is controlled to run constantly in the first gear at the rotational speed S1. When the temperature difference between the first temperature T1 and the second temperature T2 is larger than the preset value T0, a second rotational speed S2 is selected by the microprocessor and the motor is controlled to run constantly in the second gear at the rotational speed S2.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: November 5, 2019
    Inventors: Wenqing Bian, Ge Hu
  • Patent number: 10436488
    Abstract: A control system for controlling a refrigeration system having an operating point, comprising: a memory configured to store a relationship of at least an evaporator efficiency, an evaporator heat load, a refrigerant amount in the evaporator, and a variable dependent on a non-volatile liquid mixed with refrigerant in the evaporator an input port configured to receive a signal corresponding to at least a measured evaporator heat load during operation; an output port configured to present an output to selectively alter an operating point of the evaporator, by altering the refrigerant amount in the evaporator and thereby changing the variable; and a processor, configured to receive the signal, access the memory; and generate the output to selectively move toward an optimum operating point. A corresponding method and refrigeration system are provided.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: October 8, 2019
    Assignee: Hudson Technologies Inc.
    Inventors: Kevin Zugibe, Riyaz Papar
  • Patent number: 10393420
    Abstract: A refrigeration system for a temperature-controlled storage device includes a refrigeration circuit, a cooling circuit, and a controller. The refrigeration circuit includes a compressor driven by a brushless DC motor operable at multiple different speeds, a first heat exchanger, an expansion device, and a cooling unit in fluid communication via a first working fluid. The cooling circuit includes a pump and a second heat exchanger in fluid communication with the first heat exchanger via a second working fluid such that the first heat exchanger is liquid-cooled by the second working fluid. The controller operates the brushless DC motor at multiple different speeds to accommodate multiple different thermal loads experienced by the refrigeration system. Each of the speeds corresponds to a different thermal load. The controller modulates the speed of the brushless DC motor to maintain a desired temperature of a temperature-controlled space within the temperature-controlled device.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: August 27, 2019
    Assignee: Hill Phoenix, Inc.
    Inventors: Jules G. Choueifati, Timothy D. Swofford, Neil J. Rathje
  • Patent number: 10267540
    Abstract: A heat source unit includes a compressor, first and second heat exchangers connected in parallel, first and second motor-operated valves regulating amounts of refrigerant that flow to the first and second heat exchangers, first and second temperature sensors measuring temperatures of refrigerant flowing from the first and second motor-operated valve to the first and second heat exchangers, a discharge temperature sensor measuring temperature of refrigerant discharged from the compressor, and a valve opening controller. The controller regulates valve openings of the first and second motor-operated valves based on the discharge temperature, refrigerant temperature detected by the first temperature sensor and refrigerant temperature detected by the second temperature sensor.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: April 23, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Junya Minami, Masahiro Oka, Mari Susaki
  • Patent number: 10216258
    Abstract: A method of minimizing overall power consumption of a vehicle cooling system includes performing a hardware selection phase, performing an actuator position selection phase, and configuring operation of selected hardware components of the vehicle cooling system at a selected actuator position combination when the vehicle is operating in a predefined driving condition.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: February 26, 2019
    Assignee: FCA US LLC
    Inventors: Daniel E Hornback, Huaguo Chen, Kevin J Laboe
  • Patent number: 10126026
    Abstract: A refrigeration cycle apparatus according to the present invention includes a refrigerant circuit formed by connecting, by pipes, a compressor configured to compress a refrigerant sucked into the compressor and discharge the refrigerant, a condenser configured to cause the refrigerant to reject heat and condense the refrigerant, an electronic expansion valve configured to reduce a pressure of the condensed refrigerant, and an evaporator configured to cause the refrigerant to remove heat and evaporate the refrigerant, in which the refrigerant is a refrigerant mixture including R32 and HFO-1123, and in the refrigerant mixture, R32 is greater than HFO-1123 in mass %.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: November 13, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventor: Yuki Ugajin
  • Patent number: 10061274
    Abstract: Heating, ventilation, and air conditioning (HVAC) system controllers are described herein. One HVAC controller includes a user interface configured to receive an indication of whether there is a positive or negative relationship between each of a number of controlled variables of an HVAC system and each of a number of manipulated variables of the HVAC system, a memory, and a processor configured to execute executable instructions stored in the memory to determine operating parameters for each of the number of manipulated variables, wherein the determined operating parameters are determined based, at least in part, on whether there is a positive or negative relationship between each respective controlled variable and each respective manipulated variable, and the determined operating parameters are not based on system dynamics and disturbances associated with the HVAC system. The determined operating parameters may be optimal with respect to the current condition of the HVAC system.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: August 28, 2018
    Assignee: Honeywell International Inc.
    Inventors: Purnaprajna R. Mangsuli, Ranganathan Srinivasan, Paul Wacker, Ondrej Holub
  • Patent number: 10036563
    Abstract: The present invention relates to a modular air conditioning unit, comprising a chassis having an outside surface, comprising an evaporator coil air intake opening; a treated air discharge opening; and a condenser coil air intake opening; and an air conditioning system located within the chassis, comprising a condenser coil unit, an evaporator coil unit, and a blower, including an air intake opening, and an air discharge opening in fluid communication with the treated air discharge opening, wherein the air intake opening is in fluid communication with the evaporator coils.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: July 31, 2018
    Inventor: Joseph Baruch
  • Patent number: 10018391
    Abstract: An air conditioner includes an outdoor unit and a plurality of indoor units connected to the outdoor unit. The outdoor unit sometimes sets an evaporation temperature or a condensation temperature that is different from a value that any of the indoor units has requested from the outdoor unit. The indoor units have indoor-side controllers that perform capacity control that adjusts capacity based on a degree of superheating or a degree of supercooling, an air volume, or an evaporation temperature or a condensation temperature while calculating a requested capacity that is determined from a current room temperature and a set room temperature. The indoor-side controllers, when performing the capacity control, determine at least one of the air volume and a target value of the degree of superheating or the degree of supercooling based on the evaporation temperature or the condensation temperature that is set by the outdoor unit.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: July 10, 2018
    Assignee: Daikin Industries, Ltd.
    Inventor: Kousuke Kibo
  • Patent number: 9939185
    Abstract: A refrigeration system includes a compressor, a condenser, a receiver, an expansion device, and an evaporator in fluid communication with one another. An electronic condenser pressure control valve is in fluid communication with an outlet of the condenser and operative to control a condition at the outlet of the condenser. A controller is operatively coupled to the electronic condenser pressure control valve, the controller including logic configured to operate the electronic condenser pressure control valve to dynamically float the discharge pressure at the condenser outlet based on at least one of one or more system conditions or one or more ambient condition.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: April 10, 2018
    Assignee: Parker-Hannifin Corporation
    Inventors: Ted W. Sunderland, Dustin B. Searcy, Christian D. Parker, Dave P. Wrocklage, Kevin E. Dorton
  • Patent number: 9868337
    Abstract: A method for dehydrating an evaporator of an air conditioner of a vehicle is provided to drive a blower motor depending on the humidity of the evaporator while monitoring a dry state of the evaporator, thus allowing the evaporator to be appropriately dried and preventing a problem from being caused by the discharge of a battery, therefore minimizing an odor generated by the air conditioner of the vehicle owing to effective drying of the evaporator of the air conditioner, and consequently considerably improving the marketability of the vehicle.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: January 16, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Tae Han Kim, Jun Kyu Park, Moo Yong Kim
  • Patent number: 9851154
    Abstract: A condenser for a vehicle includes an integrally formed receiver-drier and a plurality of stacked plates. The condenser may be used in an air conditioning having an expansion valve expanding liquid refrigerant, an evaporator evaporating the refrigerant expanded at the expansion valve through heat-exchange with air, and a compressor receiving from the evaporator and compressing gaseous refrigerant, may be provided between the compressor and the expansion valve, and may circulate coolant supplied from a radiator so as to condense the refrigerant supplied from the compressor through heat-exchange with the coolant and the refrigerant.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: December 26, 2017
    Assignees: Hyundai Motor Company, Doowon Climate Control Co., Ltd.
    Inventors: Jae Yeon Kim, Wan Je Cho, Man Hee Park, Seok Jin Park
  • Patent number: 9758923
    Abstract: A steaming system includes a housing with a lid, a steaming compartment, and a heating chamber. The system also includes provisions for generating steam and exposing articles to the steam. Articles of apparel, including articles of footwear, may be placed in steaming system to help customize the articles of apparel for a user's fit and comfort. The steaming system can be configured to be portable and carried by a person.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: September 12, 2017
    Assignee: NIKE, Inc.
    Inventor: Bryan N. Farris
  • Patent number: 9762173
    Abstract: An inverter electrically connected to an electric machine is described. A method for controlling switching in the inverter includes determining a torque output of the electric machine and determining a temperature related to an inverter cooling circuit. A preferred inverter switch control mode for controlling the inverter is selected based upon the torque output of the electric machine and the temperature related to the inverter cooling circuit.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: September 12, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: David S Ochs, Brian A Welchko, Alexander K. Rustoni
  • Patent number: 9696054
    Abstract: Systems and methods for controlling a central plant for a building are provided. The central plant has a plant load. An optimal combination of plant equipment for meeting the plant load is estimated. Estimating the optimal combination of plant equipment includes using binary optimization to determine at least two potential combinations of plant equipment. Estimating the optimal combination of plant equipment also includes using nonlinear optimization to determine a potential power consumption minimum for each of the at least two potential combinations. The central plant is controlled according to the estimated optimal combination of plant equipment.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: July 4, 2017
    Assignee: Johnson Controls Technology Company
    Inventor: Matthew J. Asmus
  • Patent number: 9671144
    Abstract: Aspects of the disclosure provide a system and method for thermal-compression refrigeration. The refrigeration system includes a storage tank that stores a refrigerant condensate from a condenser, a mixing chamber that receives a refrigerant vapor from an evaporator and a portion of the refrigerant condensate from the storage tank, and produces a refrigerant mixture of the refrigerant vapor and the portion of the refrigerant condensate, and a first and second refrigerant compressors between the mixing chamber and condenser. The first and second refrigerant compressors each receives the refrigerant mixture from the mixing chamber, compresses the refrigerant mixture to produce a compressed refrigerant using thermal energy, and is capable of operating in a heater mode or a cooler mode.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: June 6, 2017
    Assignee: King Fahd University of Petroleum and Minerals
    Inventor: Maged Ahmed El-Shaarawi
  • Patent number: 9639096
    Abstract: A showcase control system 100 comprises a showcase operating rate detection unit 11 that detects a showcase operating rate of a showcase control unit 30 which controls freezing or refrigerating inside a showcase, an over-operating detection unit 12 that outputs an over-operating signal when the showcase operating rate input from the showcase operating rate detection unit 11 exceeds a predetermined value, and an air-conditioning control system 20 that curtails the energy-saving control of an air conditioner 50 when receiving an over-operating signal from the over-operating detection unit 12. Thereby, it is possible to comprehensively perform energy-saving control of a showcase and an air conditioner at a sales space where the showcase is installed.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: May 2, 2017
    Assignee: TECHNOMIRAI CO., LTD.
    Inventor: Kazuo Miwa
  • Patent number: 9625274
    Abstract: A method for controlling a vapor compression system determines a value of a metric of performance of the vapor compression system using a previous value of an estimated parameter and a previous value of a control signal determined for a previous time step of the control. The values of the estimated parameter represent a relationship between values of the control signal and values of the metric of performance. A current value of the estimated parameter is determined based on the previous value of the estimated parameter and an error between the determined value of the metric of performance and a measured value of the metric of performance. Next, a current value of the control signal is determined based on the current value of the estimated parameter.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: April 18, 2017
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Daniel Burns, Martin Guay, Walter Weiss
  • Patent number: 9581348
    Abstract: A method of controlling the temperature of a controller of an electric compressor for an air conditioner in a vehicle is provided, which prevents an excessive increase in temperature of the controller under the control of an output current of the controller. The method includes a temperature-determination stage of detecting the temperature of the controller and determining whether or not the detected temperature is equal to or lower than a reference temperature that is lower than a predefined target temperature by a specified number of degrees when an actuating signal of the air conditioner is generated in a switched-on stage of a vehicle. A current-control stage controls an output current of the controller to decrease the temperature until the detected temperature reaches the reference temperature or lower if the detected temperature is determined to be higher than the reference temperature.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: February 28, 2017
    Inventor: Sung Mun Cho
  • Patent number: 9454160
    Abstract: According to one embodiment, a thermal recycling plant system includes a cooler cools coolant recycling thermal from coolant circulating in a load apparatus and which consumes energy while operating and a controller controls the cooler. The controller includes a calculator and a monitor. The calculator calculates an optimal temperature optimal for the coolant by optimization calculation for minimizing energy consumption under given conditions. The monitor monitors an operating state of the load apparatus to determine whether an abnormality exists in the load apparatus. The monitor controls the cooler to cool the coolant to a temperature lower than the optimal temperature calculated, on determining that an abnormality exists in the load apparatus.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: September 27, 2016
    Inventors: Koji Kimura, Kenji Mitsumoto, Kenichi Yamazaki, Yasuo Sasaki, Yasushi Kasao
  • Patent number: 9417000
    Abstract: A diagnostic monitoring system and method is employed for one or more vapor compression systems such as air conditioners and heat pumps having a compressor, an indoor air handler fan coil and an outdoor condensor. Temperature, voltage and current sensors are provided at the outdoor condensor to determine that at least one vapor compression system is operating properly. Data obtained from the sensors is wirelessly transmitted to a receiving-device for use by the systems' custodian or repair service provider and includes information concerning an occurrence of periods when one or more of the vapor compression systems are operating at an abnormal state.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: August 16, 2016
    Inventors: Robert P. Scaringe, Robert Paul Roth, Erik P. Thomas, Chad L. Carff, Daniel Lambert
  • Patent number: 9157671
    Abstract: A cooling system 1 is constructed to have a refrigeration circuit 2 in which low-temperature showcases 7 as plural load facilities are connected to a rack system refrigerating machine 3 in parallel through refrigerant pipes 5a and 5b, a main controller 4 for generating and outputting control data of compressors 9 constructing the rack system refrigerating machine 3 on the basis of the cooling state of the low-temperature showcases 7, and a compressor controller 6 which is constructed to acquire control setting required for capacity control of the compressors 9 as main elements of the rack system refrigerating machine 3, receives control data from the main controller 4 and controls the compressors 9 on the basis of the control setting and the control data.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: October 13, 2015
    Inventors: Tsuyoshi Kawaai, Kazuhiro Sekiguchi, Teruo Shimizu, Masaru Koshiba
  • Patent number: 9145880
    Abstract: The present application provides a compressor manifold assembly. The compressor manifold assembly may include a suction manifold with a number of suction manifold modules, a discharge manifold with a number of discharge manifold modules, and a number of compressors positioned on the suction manifold and the discharge manifold.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: September 29, 2015
    Assignee: Heatcraft Refrigeration Products LLC
    Inventor: Mark Lee Ellis
  • Patent number: 9109830
    Abstract: Systems and methods for low ambient air temperature cooling in air-source based heat pump systems wherein an outdoor heat pump unit includes a discharge hood positionable over its fan. The hood including a damper that is openable and closeable as a function of outside temperature. The outdoor unit may also include wind deflectors positioned over the coil openings of the disclosure. During cooling operations below a low outside air threshold temperature, e.g., below 23° F., the damper assembly partially closes to reduce airflow across the condenser coil of the outdoor unit to a level below that which is possible at minimum fan speed. As the outdoor temperature continues to drop, the damper assembly continues to close to further reduce airflow.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: August 18, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventor: Joseph P. Bush
  • Patent number: 9027359
    Abstract: A modular heat exchange system having a refrigerant system for cycling a refrigerant through a compressor, a condenser, an expansion valve, and an evaporator, a heat source circulation system which circulates a heat exchange fluid between a heat source and the evaporator, a heat sink circulation system which circulates a heat absorption fluid between a heat sink and the condenser, a fluid management system having temperature gauges for respectively reading core temperatures of the heat source and the heat sink, and a thermal energy source from which thermal energy is transferred to the heat exchange fluid when the core temperature of the heat source falls below a threshold temperature while the core temperature of the heat sink is maintained at a constant temperature.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: May 12, 2015
    Assignee: Triea Technologies, LLC
    Inventors: James O'Brien, Matthew Ginalick, Jr.
  • Patent number: 9021818
    Abstract: Device for cool drying comprising a heat exchanger (2) whose primary part is the vaporizer (3) of a cooling circuit (4) which also includes a compressor (6) driven by a motor (5), a control device (16) for this motor (5) and measuring device (17) for the lowest air temperature (LAT), measuring device (18) for the ambient temperature (Tamb) and a flow meter (19), whereby this control device (16) can be at least switched in a first user mode in which the cooling circuit (4) is only activated when the gas flow exceeds a preset value and a second user mode in which the lowest air temperature (LAT) is maintained within a certain range by controlling the cooling circuit (4).
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: May 5, 2015
    Assignee: Atlas Copco Airpower, Naamloze Vennootschap
    Inventors: Monica Dalla Valle, Wouter Denis Ann Van Dijck
  • Patent number: 8991201
    Abstract: An ejector cycle system with a refrigerant cycle through which refrigerant flows includes an ejector disposed downstream of a radiator, a first evaporator that evaporates refrigerant flowing out of the ejector, a throttling unit located in a branch passage and depressurizes refrigerant to adjust a flow rate of refrigerant, and a second evaporator located downstream of the throttling unit. In the ejector cycle system, a flow ratio adjusting means adjusts a flow ratio between a first refrigerant flow amount depressurized and expanded in a nozzle portion of the ejector and a second refrigerant flow amount drawn into a refrigerant suction port of the ejector, based on a physical quantity related to at least one of a state of refrigerant in the refrigerant cycle, a temperature of a space to be cooled by the first and second evaporators, and an ambient temperature of the space.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: March 31, 2015
    Assignee: Denso Corporation
    Inventors: Makoto Ikegami, Hiroshi Oshitani, Etsuhisa Yamada, Naohisa Ishizaka, Hirotsugu Takeuchi, Takeyuki Sugiura, Takuo Maehara
  • Patent number: 8984902
    Abstract: A cooling system for an appliance includes an evaporator stage, a compressor stage coupled to the evaporator stage and a condenser stage coupled to the compressor stage. The condenser stage includes a condenser and a condenser cooling fan for cooling the condenser, and a condenser loop coupled between the condenser stage and the evaporator stage. A humidity sensor is configured to detect a humidity level in an area of the cooling system and a controller is configured to cycle an operating state of the condenser cooling fan from ON to a low speed or OFF prior to an end of a cooling cycle.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: March 24, 2015
    Assignee: General Electric Company
    Inventors: Brent Alden Junge, Eric Paez, Joseph Thomas Waugh, Kristin Marie Weirich
  • Patent number: 8966918
    Abstract: A wheel loader is provided with a cab, an air conditioning unit, a cooling fan which has a condenser and a compressor, an air conditioning switch which receives the operation or non-operation of the compressor, a temperature setting portion which sets a set temperature inside the cab, a room temperature sensor which detects a room temperature inside the cab, and a controller. In a case where the air conditioning switch is operated and the room temperature is higher than a set temperature, the controller maintains the rotation amount of the cooling fan at a limited rotation amount or more.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: March 3, 2015
    Assignee: Komatsu Ltd.
    Inventors: Hiroyuki Kitaoka, Kentaro Yajima
  • Patent number: 8950205
    Abstract: An apparatus and method to cool compressors, condensing coils, and similar devices. The compressor or condensing coil is cooled by the delivery of water, which may be ambient temperature or chilled. In one embodiment, the water is delivered to a mesh filter or screen via one or more mist spray nozzles. Water conduits may be integrated with the filter frame. The method to control the delivery of the water is designed to conserve water. The control circuit comprises a microcontroller device which contains programming that receives inputs, including but not limited to, outside ambient air temperature, condenser liquid line temperature, relative humidity and electric current, and uses said inputs to provide a stepwise level of control (“solenoid open time”) of water delivery commensurate with outside air temperature and relative humidity.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: February 10, 2015
    Assignee: Evaporcool Solutions, LLC
    Inventors: Pat Matracea, Rick Earles, Susan Ann Beinor, Gregory Steven Cook, Arthur Joseph Flagg, Mark Thomas Marini
  • Publication number: 20140366564
    Abstract: The present invention relates to an air-conditioning apparatus which is capable of performing a cooling operation in a stable manner in an environment having a low outside temperature. The air-conditioning apparatus according to the present invention comprises: a housing including an inlet, a bypass inlet, and an outlet; a fan configured to introduce air into the housing and discharge the air from the housing; a heat-exchange flow path deposed between the inlet and the outlet; a heat exchanger disposed at the heat exchange flow path; and a bypass flow path disposed between the bypass inlet and the outlet.
    Type: Application
    Filed: December 14, 2012
    Publication date: December 18, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Eunjun Cho, Beomsoo Seo
  • Patent number: 8910489
    Abstract: A heat pump system for a vehicle includes a water cooled condenser that uses a coolant as a heat exchange media and uses waste heat generated from a motor and an electronic device to improve heating performance, efficiency, and dehumidifying performance. A control method is also described.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: December 16, 2014
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yong Hyun Choi, Jae Yeon Kim, Yong Woong Cha, Wan Je Cho, Jungha Park, Jaesan Kim, Man Hee Park, Yong Lee
  • Patent number: 8899067
    Abstract: A refrigerating apparatus including a control unit which starts the operation of the refrigerant compressor in response to an operation signal and which regulates the pressure reducing device so that the temperature of a refrigerant in the water heat exchanger becomes +80 ° C. or more and the temperature of the refrigerant in the evaporator becomes 0 ° C. or less. The control unit detects a state where a cold storage amount in the cold storage unit reaches a predetermined amount or more and another state where the control unit judges whether the hot water storage tank is full of the hot water, after the elapse of a predetermined time from the start of the operation of the refrigerant compressor, and it stops the operation of the refrigerant compressor when one of the states is satisfied.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: December 2, 2014
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masahisa Otake, Setsu Hasegawa, Ken Kawakubo, Hidetaka Sasaki
  • Publication number: 20140291411
    Abstract: A heat pump heating and hot-water system includes a water heating heat exchanger for heating water by heat exchange with a heating medium heated by a heat pump unit, an indoor heating unit, a heating circulation circuit for selectively pumping the heating medium to either of the water heating heat exchanger and the indoor heating unit using a heating medium pump, and a hot-water accumulating circuit that sends water in a hot-water storage tank to the water heating heat exchanger and returns water having passed through the water heating heat exchanger to the hot-water storage tank using a water pump. The volumetric flow rate of the heating medium pumped to the water heating heat exchanger by the heating medium pump is higher than or equal to the volumetric flow rate of the water pumped to the water heating heat exchanger by the water pump.
    Type: Application
    Filed: December 6, 2011
    Publication date: October 2, 2014
    Inventors: Shogo Tamaki, Makoto Saito, Fumitake Unezaki, Nobuaki Uehara
  • Patent number: 8844304
    Abstract: A pool heating system is disclosed. The pool heating system includes, in some embodiments, an immersed condenser coil. In some embodiments, the immersed condenser coil is immersed in a pool of water receiving hot refrigerant gas at high pressure from an outdoor unit, transferring heat to water in the pool, condensing the gas and transmitting condensed refrigerant to the outdoor unit. The system also includes an outdoor unit. In some embodiments, the outdoor unit includes a compressor, an expansion valve, an evaporator, and a fan.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: September 30, 2014
    Inventor: David Peretz
  • Patent number: 8813511
    Abstract: Methods and systems for controlling the operation of condenser fans are provided. At most discharge pressures, the operation of the condenser fans may be controlled based on a capacity of the compressor system. To adjust operation of the condenser fans, the speed of the fans and/or the number or operational fans may be adjusted. The control of the condenser fans based on compressor system capacity may be overridden at compressor discharge pressures that rise above a high pressure level and fall below a low pressure level. At the high and low discharge pressures, the fan speed and/or number of operating fans may be adjusted based solely on the discharge pressure rather than on the compressor system capacity.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: August 26, 2014
    Assignee: Johnson Controls Technology Company
    Inventors: William L. Kopko, Jose Ruel Yalung de la Cruz, Israel Federman
  • Patent number: 8813512
    Abstract: Embodiments of a modular condenser unit are provided. The modular condenser unit may include a housing and a first condenser coil and a second condenser coil disposed within a volume of the housing. A fan may also be disposed in an end of the housing and adapted to draw air through at least one of the first condenser coil and the second condenser coil. In some embodiments, the first condenser coil and/or the second condenser coil may be micro-channel condenser coils.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: August 26, 2014
    Assignee: Hobart Brothers Company
    Inventors: Varun Prem Sagar Rajasekaran, Jeffrey E. Montminy, Steven Eugene Bivens
  • Publication number: 20140223940
    Abstract: An air-conditioning apparatus includes a refrigeration cycle that includes an intermediate heat exchanger configured to exchange heat between a heat source side refrigerant and a heat medium different from the heat source side refrigerant, a heat medium circuit that includes at least one pump configured to circulate the heat medium related to heat exchange in the intermediate heat exchanger, a use side heat exchanger configured to exchange heat between the heat medium and air related to an air-conditioned space, and flow switching valves. A controller is configured to perform control to activate the pump to circulate the heat medium through the heat medium circuit when, during suspension of an air conditioning operation, the detected temperature of outdoor air is at or below a first predetermined temperature and a first predetermined period of time has elapsed since the pump was stopped.
    Type: Application
    Filed: December 16, 2011
    Publication date: August 14, 2014
    Inventors: Osamu Morimoto, Daisuke Shimamoto, Koji Azuma, Takayoshi Honda
  • Patent number: 8701429
    Abstract: A supplementary air conditioning system includes an indoor heat exchanger and an outdoor heat exchanger. The indoor heat exchanger is fanless and includes indoor tubes installed so as to be inclined to a ceiling of a room. The indoor tubes make diagonal contact with a high-temperature air zone in an upper part of the room and refrigerant inside the indoor tubes is heated by the air zone so as to boil and vaporize and air in the air zone flows down through the indoor heat exchanger. The external heat exchanger includes outdoor tubes installed outside at a higher position than the indoor tubes and are connected to the indoor tubes via connecting pipes with no compressor therebetween. The outdoor tubes condense and liquefy the refrigerant boiled and vaporized in the indoor tubes and return the refrigerant to the indoor tubes.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: April 22, 2014
    Assignee: GAC Corporation
    Inventor: Junichi Oki
  • Patent number: 8689574
    Abstract: The disclosure provides an apparatus for heating water and dehumidifying air and a water heating and air processing system. In one embodiment, the apparatus includes: (1) a refrigeration circuit including an evaporator, a first condenser and a compressor, (2) a refrigerant-water heat exchanger having a second condenser fluidly coupled to the refrigeration circuit and (3) a control valve operatively connected to the refrigeration circuit to either direct flow of the refrigerant through the first condenser during a dehumidification mode or through the second condenser during a water heating mode.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: April 8, 2014
    Assignee: Lennox Industries Inc.
    Inventor: Robert Uselton
  • 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: 8640473
    Abstract: A refrigeration apparatus includes a condensing unit, a flow distributor, and an evaporator connected to the condensing unit via the flow distributor. A pressure detector is configured to detect condensation pressure of the refrigerant. A calculation unit is configured to calculate a target condensation pressure of refrigerant necessary for the refrigerant to be an evaporation temperature in the evaporator. A controller is configured to control the condensing unit so that the condensation pressure of the refrigerant becomes equal to or more than the target condensation pressure.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: February 4, 2014
    Assignee: Nakayama Engineering Company Limited
    Inventor: Junya Nakayama
  • Patent number: 8620502
    Abstract: An electric vehicle battery heater includes a housing having a coolant inlet and a coolant outlet. A heating element is positioned within the housing in a heat transfer relationship with coolant for transferring heat to an electric vehicle battery. A thermistor is positioned in the housing to output a signal indicative of a temperature of the battery coolant. A controller energizes the heating element when the signal represents that the coolant temperature is less than a predetermined lower limit.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: December 31, 2013
    Assignee: Phillips & Temro Industries Inc.
    Inventor: Robert J. Allen
  • Patent number: 8567205
    Abstract: An inlet air flow guide for a condensing unit of an air cooled direct expansion (ACDX) air conditioning unit. The flow guide has a panel having at least a portion spaced from a surface of the condensing unit to define a plenum for cooling air to enter the condensing unit from one side. A condensing unit of an ACDX air conditioning unit has a refrigerant cooling coil disposed in an opening, and the inlet air flow guide defines a plenum to provide an air flow passage to the opening from one side thereof. According to a method, the inlet air flow guide is installed onto the condensing unit of an ACDX air conditioning unit, wherein a panel of the flow guide has at least a portion spaced from a surface of the condensing unit to define a plenum for cooling air to enter the condensing unit from one side.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: October 29, 2013
    Inventor: David L. Hatton