Selective Heating Or Cooling Patents (Class 62/159)
  • Patent number: 10539342
    Abstract: The present disclosure provides a refrigeration system comprising a receiver for use in applications where environmentally-friendly, typically flammable refrigerants are used. The receiver is sized so that it allows for the maximum amount of refrigerant to be used when regulatory concerns restrict the total amount. The present disclosure also provides a method for selecting the size of the receiver.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: January 21, 2020
    Assignee: THE DELFIELD COMPANY, LLC
    Inventors: Thomas Joseph Frick, Jeremy Robert Huhn
  • Patent number: 10369864
    Abstract: There is disclosed a vehicle air conditioner device which is capable of continuing air conditioning of a vehicle interior also in a case where a failure occurs in a solenoid valve to change a flow of a refrigerant in each operation mode. A vehicle air conditioner device 1 includes a solenoid valve 17 for cooling, a solenoid valve 21 for heating and a solenoid valve 22 for dehumidifying to switch respective operation modes of the vehicle air conditioner device. A controller changes and executes the respective operation modes of a heating mode, a dehumidifying mode, and a cooling mode. The controller has a predetermined air conditioning mode during failure, and failure detecting means for detecting failure of the solenoid valve.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: August 6, 2019
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventors: Tetsuya Ishizeki, Megumi Shigeta, Yasunobu Takano, Hidenori Takei, Osamu Takazawa
  • Patent number: 10315485
    Abstract: In a vehicle air conditioner device of a heat pump system, control of an air mix damper is appropriately performed in each operation mode, thereby achieving efficient vehicle interior air conditioning. The vehicle air conditioner device includes an air mix damper 28 to adjust a ratio at which air in an air flow passage 3 passed through a heat absorber 9 is to be passed through a radiator 4. In a cooling mode, a controller controls the air mix damper 28 to adjust the ratio at which the air is to be passed through the radiator 4 on the basis of one, any combination, or all of a target outlet temperature, a temperature of the radiator and a temperature of the heat absorber, and in a heating mode, the controller controls the air mix damper 28 to pass all the air in the air flow passage 3 through the radiator 4.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: June 11, 2019
    Assignee: Sanden Holdings Corporation
    Inventors: Ryo Miyakoshi, Kenichi Suzuki, Kouhei Yamashita
  • Patent number: 10252600
    Abstract: There is disclosed an air-conditioning apparatus for vehicle which is capable of selecting an appropriate operation mode while inhibiting the operation mode from being unnecessarily changed, and achieving rapid and stable vehicle interior air conditioning. A controller has respective operation modes of a heating mode, a dehumidifying and heating mode, a dehumidifying and cooling mode, and a cooling mode, and selects and executes these operation modes. The controller has a dehumidifying and heating mode maximum radiator temperature MAP and a dehumidifying and cooling mode maximum radiator temperature MAP. The controller selects an operation mode in which a radiator target temperature TCO is achievable by heat radiation in a radiator 4 with reference to each MAP, on startup or at a time of change of the operation mode.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 9, 2019
    Assignee: Sanden Holdings Corporation
    Inventors: Ryo Miyakoshi, Kenichi Suzuki, Kouhei Yamashita
  • Patent number: 10203122
    Abstract: An air-conditioning and ventilation apparatus includes an air-conditioning coil that is installed on a downstream side of a heat exchanger in a supply air trunk and changes cooling capacity with respect to heat-exchanged outdoor air in multiple stages; an outdoor-air temperature and humidity sensor that detects temperature and relative humidity of the outdoor air; and a control unit that stores therein reference data in which the cooling capacity is set for each combination of temperature and relative humidity of the outdoor air such that absolute humidity of supply air becomes equal to or lower than indoor target absolute humidity on the basis of a dehumidification load corresponding to an absolute humidity difference between indoors and outdoors, and determines a cooling capacity value of the air-conditioning coil on the basis of detection results during a cooling operation by the outdoor-air temperature and humidity sensor and the reference data.
    Type: Grant
    Filed: July 4, 2014
    Date of Patent: February 12, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masahiro Hasegawa, Masami Yasuda, Hidemoto Arai
  • Patent number: 10183550
    Abstract: Methods and systems for providing controlling environmental conditions in a passenger compartment of a vehicle are presented. In one example, various low cost expansion valves are included in a system that has a receiver positioned downstream of an exterior heat exchanger to provide a climate control system with heating, cooling, dehumidification, and de-icing modes.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: January 22, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: James George Gebbie, Clay Wesley Maranville, Timothy Noah Blatchley
  • Patent number: 10093146
    Abstract: An air-conditioning system for a vehicle, comprising a refrigerant circuit through which a refrigerant can flow and which is configured as a heat pump circuit and as a cooling system circuit, and associated with these, a compressor, at least one external heat exchanger, at least one internal heat exchanger that is associated with an internal heating condenser, whereby a device is provided for generating an air stream that can be thermally coupled to the internal heat exchanger and to the internal heating condenser, as well as a metering device that can meter the flow of at least a partial stream of the thermally coupled air stream through the internal heating condenser is provided, wherein in the heat pump mode of operation, the refrigerant can be or is conveyed from the high-pressure side of the compressor into the internal heating condenser, can be or is conveyed from the internal heating condenser via a first expansion valve to the internal heat exchanger, can be or is conveyed from the internal heat ex
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: October 9, 2018
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Matthias Fürll, Stefan Schmitt, Horst Achim Schröter, Stefan Brück, Gregor Homann
  • Patent number: 9915456
    Abstract: A vapor compression system includes a heat exchanger having an inlet header pipe connected to a set of paths for passing refrigerant to condition a controlled zone. The inlet header pipe splits the refrigerant into different paths. An amount of the refrigerant entering the inlet header pipe is controlled by a valve. The vapor compression system also includes a set of sensors for measuring temperatures of the refrigerant in each path of the set of paths and a controller including a processor for determining a position of the valve based on the measurements of at least one sensor from the set of sensors and a thermal capacity requested for the heat exchanger.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: March 13, 2018
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Daniel J Burns, Scott A Bortoff
  • Patent number: 9879896
    Abstract: Ice making system and method for a refrigerator is disclosed. The ice making system includes an ice making unit that makes ice cubes, a cold air generator that cools air inside a cooling duct so as to produce cold air, a cold air circulation unit that supplies the cold air from the cold air generator to the ice making unit, and discharges the cold air from the ice making unit to the cold air generator, and a cold air guiding unit that circulates the cold air inside the ice making unit.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: January 30, 2018
    Assignee: Dongbu Daewoo Electronics Corporation
    Inventor: Min Bon Koo
  • Patent number: 9851132
    Abstract: This air conditioner performs a cooling operation and a heating operation in parallel with each other with an outdoor unit and indoor units connected together through two communication pipes. The air conditioner includes a switching mechanism changing the directions of refrigerants flowing through the communication pipes depending on whether a heating dominant operation is being performed in a first load region where a cooling load is relatively light or a second load region where the cooling load is heavier than in the first load region. In the second load region, the switching mechanism allows a low-pressure refrigerant to flow from the indoor units to the outdoor unit through the second communication pipe thicker than the first communication pipe to reduce a performance deterioration due to the pressure loss involved with the heating dominant operation.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: December 26, 2017
    Assignee: Daikin Industries, Ltd.
    Inventors: Satoshi Kawano, Shinya Matsuoka, Masahiro Oka, Mari Susaki
  • Patent number: 9816712
    Abstract: An outdoor unit includes a casing having a bottom plate and is configured such that at least a part thereof is made of metal, a compressor provided within the casing to compress a flammable refrigerant, an outdoor heat exchanger provided within the casing to exchange heat between the refrigerant and outside air, and an electric heater provided on an upper surface of the bottom plate. The power consumption of the electric heater is 250 W or less.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: November 14, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mochizuki, Yoshihiro Tanabe
  • Patent number: 9694646
    Abstract: In a refrigeration cycle device, a first evaporator for cooling a first cooling target and a second evaporator for cooling a second cooling target are arranged in parallel between a radiator and an accumulator, a first pressure reducer is arranged upstream of the first evaporator, and a mechanical expansion valve as a second pressure reducer is arranged upstream of the second evaporator. The refrigeration cycle device includes a refrigerant passage through which a portion of a refrigerant flowing out of the radiator flows while bypassing the second pressure reducer and the second evaporator, and is decompressed by a separate pressure reducer from the second pressure reducer, so as to return the refrigerant containing a liquid phase refrigerant to the accumulator, in a cooling operation mode for cooling only the second cooling target.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: July 4, 2017
    Assignee: DENSO CORPORATION
    Inventors: Masayuki Takeuchi, Takashi Yamanaka
  • Patent number: 9677789
    Abstract: A refrigerator having a refrigerating circuit with a compressor, a condenser and two evaporators placed in different compartments of the appliance comprises valve means for alternatively directing refrigerant flow towards one of the evaporators. One of the evaporators is in heat exchange relationship with a phase change material.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: June 13, 2017
    Assignee: Whirlpool Corporation
    Inventors: Cesare Maria Joppolo, Luca Molinaroli, Matej Visek
  • Patent number: 9610822
    Abstract: An vehicle air conditioner (1A) includes a duct (3) in which a partition member (4) forming a first flow path (3A) and a second flow path (3B) is provided, and a heat pump circuit (2A). In the heat pump circuit (2A), a first indoor heat exchanger (12A) that contributes mainly to heating is located in the first flow path (3A) or faces an outlet of the first flow path (3A), and a second indoor heat exchanger (12B) that contributes mainly to cooling is located in the second flow path (3B). The ratio between an internal air and an external air within air flowing through each of the first flow path (3A) and the second flow path (3B) is adjustable. The duct (3) is provided with at least one of a heating exhaust port (35) for discharging air cooled in the second indoor heat exchanger (12B) to the outside of the vehicle interior in heating operation, and a cooling exhaust port (36) for discharging air heated in the first indoor heat exchanger (12A) to the outside of the vehicle interior in cooling operation.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: April 4, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Yasufumi Takahashi
  • Patent number: 9534825
    Abstract: A bottom mount refrigerator is provided with a pantry compartment that is accessible from outside the refrigerator by pulling open an easy access pantry drawer without the need to first open the fresh food compartment or the freezer compartment. A divider between the pantry compartment and the fresh food compartment is formed by a secondary mullion and a transparent shelf. The secondary mullion is provided with a light source for illuminating the contents of the pantry drawer. A light source at the rear of the pantry compartment shines generally forwardly and upwardly to illuminate the fresh food compartment.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: January 3, 2017
    Assignee: Whirlpool Corporation
    Inventors: Michael J. Eveland, Steven G. Herndon, Todd E. Kniffen, Bill J. Koons
  • Patent number: 9353983
    Abstract: Refrigerator appliances are provided. A refrigerator appliance includes a cabinet defining a fresh food chamber, and a door rotatably hinged to the cabinet for accessing the fresh food chamber, the door including an inner surface and an outer surface. The refrigerator appliance further includes a compartment defined in the inner surface of the door, the compartment defining an interior chamber and including a compartment door providing access to the interior chamber. The compartment is selectively operable at a first temperature below approximately 32 degrees Fahrenheit and a second temperature above approximately 40 degrees Fahrenheit.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: May 31, 2016
    Assignee: General Electric Company
    Inventors: Alan Joseph Mitchell, Joel Erik Hitzelberger, Ronald Gary Foster
  • Patent number: 9285171
    Abstract: A unified heat exchanger includes a first heat exchanging arrangement and a second heat exchanging arrangement. The first heat exchanging arrangement is adapted to exchange heat between high pressure refrigerant and conditioning air. The second heat exchanging arrangement is adapted to exchange heat between low pressure refrigerant and the conditioning air. The first heat exchanging arrangement and the second heat exchanging arrangement are integrated together and are arranged to enable heat exchange of the conditioning air with both of the high pressure refrigerant and the low pressure refrigerant.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: March 15, 2016
    Assignee: DENSO CORPORATION
    Inventors: Yoshiki Katoh, Satoshi Itoh
  • Patent number: 9046284
    Abstract: An air conditioning apparatus 1 includes first start control and second start control as its start control. In the first start control, first outdoor heat exchangers 24a, 24b are controlled to function as evaporators and second outdoor heat exchangers 25a, 25b are controlled to function as condensers. Thus, even when the compressors 21a, 21b are driven on at a given rotation number, the discharge pressures thereof can be prevented from increasing, thereby being able to prevent the internal pressures of the compressors 21a, 21b from increasing. Also, after end of the first start control, the first outdoor heat exchangers 24a, 24b and second outdoor heat exchangers 25a, 25b are all controlled to function as evaporators, and the compressors 21a, 21b are driven on at a given rotation number. This can shorten the rising time of the heating capacity in the start of the normal heating operation.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: June 2, 2015
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Hideya Tamura, Takahiro Matsunaga, Shinju Watanabe, Keito Kawai, Takashi Kimura, Kotaro Toya, Yasuhiro Oka, Ken Nakashima
  • Publication number: 20150135750
    Abstract: The hot and cold water air conditioning system includes a water temperature sensor configured to detect a temperature of water flowing out of the heat pump heat source apparatus by an operation of the water circulation pump, and a controller configured to perform, in a heating operation, on/off normal control that turns on a compressor when the water temperature detected by the water temperature sensor becomes lower than a target water temperature and turns off the compressor when the water temperature becomes higher than a first temperature value higher than the target water temperature, and to switch from the on/off normal control, upon repeating the on/off operation of the compressor at a minimum frequency necessary for an operation of the compressor in the on/off normal control, to on/off restriction control that turns on the compressor when the water temperature becomes lower than a second temperature value lower than the target water temperature and turns off the compressor when the water temperature be
    Type: Application
    Filed: October 17, 2014
    Publication date: May 21, 2015
    Inventor: Takahiro USHIJIMA
  • Patent number: 8997503
    Abstract: A vehicle air-conditioning system includes an HVAC unit that blows air whose temperature is adjusted by a refrigerant evaporator and a second refrigerant condenser. The system includes a heat pump cycle in which a refrigerant compressor, a refrigerant circuit changeover section, a first refrigerant condenser, a first expansion valve, and the refrigerant evaporator are sequentially connected. The system includes a second expansion valve and a refrigerant heat exchanger connected in parallel with the first expansion valve and the refrigerant evaporator. The second refrigerant condenser is connected in parallel with the first refrigerant condenser. The system includes a coolant cycle in which a coolant circulating pump, a ventilation-exhaust-heat recovery unit, a motor/battery, an electric heater, and the refrigerant heat exchanger are sequentially connected, and the ventilation-exhaust-heat recovery unit, motor/battery, and electric heater can be selectively used as a heat source.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: April 7, 2015
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masatosi Morisita, Hideki Suetake, Toshihisa Kondo, Akira Katayama
  • Patent number: 8973382
    Abstract: An air heating, air conditioning and water heating system includes a multi-communicative valve unit, a compressor arranged for compressing the refrigerant in a state of superheated vapor, a condenser communicated with the compressor through the multi-communicative valve unit, a heat exchanger communicated with the condenser through the multi-communicative valve unit, an expansion valve, and a water heater communicated with the heat exchanger and the compressor through the multi-communicative valve unit, wherein the multi-communicative valve unit is arranged to be operated to selectively establish at least an air conditioning route, an air heating route, and a water heating route for the refrigerant so that the air heating, air conditioning and water heating system is capable of selectively providing air conditioning, heating and delivering hot water for a predetermined premises.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: March 10, 2015
    Inventor: Lee Wa Wong
  • Publication number: 20150040595
    Abstract: A refrigeration cycle apparatus simultaneously performs a cooling operation mode in which a refrigerant from a compressor is caused to flow to an indoor heat exchanger of an indoor unit having a cooling load, and a hot water supply operation mode in which a refrigerant from the compressor is caused to flow to a water heat exchanger of a hot water supply unit having a hot water supply demand. An operation control part switches the control mode of the simultaneous cooling and heating and hot water supply operation mode between a cooling-prioritized mode and a hot-water-supply-prioritized mode according to the relationship between the cooling load and the hot water supply load.
    Type: Application
    Filed: March 15, 2012
    Publication date: February 12, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shogo Tamaki, Makoto Saito, Ryo Oya
  • Publication number: 20150040594
    Abstract: A vehicle air conditioning apparatus is provided that can prevent temperature variations of the air after the heat exchange in a radiator to reliably control the temperature of the air supplied to the vehicle interior. During the heating operation and the heating and dehumidifying operation, target degree of supercooling SCt when target air-blowing temperature TAO is a predetermined temperature or higher is set to SCt1 that is greater than SCt2 when the target air-blowing temperature TAO is lower than the predetermined temperature. When amount of air Ga supplied from indoor fan 12 is lower than a predetermined value, the target degree of supercooling SCt is corrected, which is set such that the degree of supercooling is lower than target degree of supercooling corrected when the amount of air Ga supplied from the indoor fan 12 is a predetermined value or higher.
    Type: Application
    Filed: March 2, 2012
    Publication date: February 12, 2015
    Inventors: Kenichi Suzuki, Atsuo Inoue, Hidenori Takei
  • Patent number: 8943847
    Abstract: To provide an air-conditioning apparatus capable of achieving energy saving. An air-conditioning apparatus controls first heat medium flow switching devices and second heat medium flow switching devices in a heating only operation mode and a cooling only operation mode such that a flow rate through which a heat medium circulates is formed between all of the heat exchangers related to heat medium and at least one of use side heat exchangers.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: February 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Yamashita, Hiroyuki Morimoto, Yuji Motomura, Shinichi Wakamoto, Naofumi Takenaka
  • Publication number: 20140373562
    Abstract: In a vehicle air conditioning apparatus, during a cooling operation, and a cooling and dehumidifying operation, a refrigerant flows through an outdoor heat exchanger, flows through a supercooling radiator, and then flows into a radiator to absorb heat. During a heating operation, the refrigerant flows through a heat exchanger and then is sucked into a compressor without passing through the supercooling radiator. During a first heating and dehumidifying operation, the refrigerant flows through another radiator, flows through the supercooling radiator, and then flows into another heat exchanger to absorb heat.
    Type: Application
    Filed: November 26, 2012
    Publication date: December 25, 2014
    Applicant: SANDEN CORPORATION
    Inventors: Kenichi Suzuki, Hidenori Takei
  • Publication number: 20140338382
    Abstract: A vehicle air conditioning apparatus includes an outdoor expansion valve controller configured to control an evaporating temperature of a refrigerant in a heat exchanger by regulating an opening of an outdoor expansion valve during a heating and dehumidifying operation, an evaporating temperature control valve provided in a refrigerant flow passage to an output side of the heat exchanger from which the refrigerant is discharged, and configured to control the evaporating temperature of the refrigerant in the heat exchanger by regulating an amount of the refrigerant flowing through the refrigerant flow passage, a temperature detector configured to detect a temperature of the refrigerant in the heat exchanger, and a control changer configured to change control of the evaporating temperature of the refrigerant in the heat exchanger from by regulating an opening of the outdoor expansion valve to by regulating an opening of the evaporating temperature control valve.
    Type: Application
    Filed: November 26, 2012
    Publication date: November 20, 2014
    Applicant: SANDEN CORPORATION
    Inventors: Ryo Miyakoshi, Kenichi Suzuki
  • Publication number: 20140331702
    Abstract: An air-conditioning apparatus including a refrigeration cycle configured by connecting one or more load-side units including a load-side heat exchanger and a load-side expansion device with a heat-source-side unit including a heat-source-side heat exchanger and a compressor and by causing refrigerant to circulate through a refrigerant circuit including the load-side heat exchanger, the load-side expansion device, the heat-source-side heat exchanger, and the compressor, controls, during a heating operation, the opening degree of the load-side expansion device, based on the discharge pressure of the compressor, so that the pressure of refrigerant at the outlet of the compressor becomes equal to a target pressure, in the case where the operation capacity of the compressor is approximately at the maximum value of the operation capacity of the compressor.
    Type: Application
    Filed: December 22, 2011
    Publication date: November 13, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kosuke Tanaka, Koji Yamashita, Takeshi Hatomura, Shinichi Wakamoto, Naofumi Takenaka
  • Publication number: 20140245767
    Abstract: A vehicle air conditioning apparatus can ensure that the temperature of the air supplied to the vehicle interior is a preset temperature by securing the quantity of heat release for the radiator during a cooling and dehumidifying operation. The valve opening of the condensing pressure regulating part of the first control valve is smaller when the calculated opening SW of the air mix damper is equal to or more than the predetermined value than when the opening SW is smaller than the predetermined value. Accordingly, when the quantity of heat release is not sufficient in the radiator, it is possible to increase the condensing pressure of the refrigerant in the radiator to raise the temperature of the refrigerant in the radiator. Consequently, it is possible to secure the amount of heating, and therefore to ensure that the temperature of the air supplies to the vehicle interior is a preset temperature.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 4, 2014
    Applicant: SANDEN CORPORATION
    Inventors: Ryo Miyakoshi, Kenichi Suzuki
  • Patent number: 8820106
    Abstract: A heat source-side refrigerant circuit A including a compressor 11, an outdoor heat exchanger 13, a first refrigerant branch portion 21 connected to the compressor 11, a second refrigerant branch portion 22 and a third refrigerant branch portion 23 connected to the outdoor heat exchanger 13, a first refrigerant flow rate control device 24 provided between branch piping 40 and the second refrigerant branch portion 22, intermediate heat exchangers 25n connected at one side thereof to the first refrigerant branch portion 21 and the third refrigerant branch portion 23 via three-way valves 26n and connected at the other side thereof to the second refrigerant branch portion 22, and second refrigerant flow rate control devices 27n provided between the respective intermediate heat exchangers 25n and the second refrigerant branch portion 22, and user-side refrigerant circuits Bn having indoor heat exchangers 31n connected respectively to the intermediate heat exchangers 25n are provided, and at least one of water and
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: September 2, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinichi Wakamoto, Koji Yamashita, Takashi Okazaki, Naoki Tanaka, Keisuke Hokazono, Hiroyuki Morimoto, Yuji Motomura, Takeshi Hatomura, Tomohiko Kasai, Naofumi Takenaka, Yusuke Shimazu
  • Publication number: 20140230463
    Abstract: A method of controlling a compressor of a thermal storage heat pump system of a vehicle is provided. The system may operate in one of a heating mode and a cooling mode, as determined by at least one system controller based on at least one parameter. The at least one parameter may be ambient air temperature. The compressor has a compressor motor and a motor controller configured to selectively operate the compressor in an unmodified state or a modified state based on the operating mode of the system. The compressor motor is operated in the unmodified state when the system is in the cooling mode, and in the modified state when the system is in the heating mode. Operating the compressor motor in the modified state may include decreasing its coefficient of performance (COP).
    Type: Application
    Filed: February 15, 2013
    Publication date: August 21, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Lawrence P. Ziehr
  • Patent number: 8800307
    Abstract: A method for operating a refrigeration system for a container for refrigerating chilled cargo includes providing a refrigeration system including a compressor and an evaporator fan associated with an evaporator. The method also includes determining the temperature of supply air and the temperature of return air. The method further includes determining one of a requirement for heating and a requirement for cooling based on the temperature of the return air and the temperature of the supply air. The method additionally includes activating the evaporator fan when a requirement for heating is determined and increasing the speed of the evaporator fan when increased heating is determined. The method also includes activating the compressor and the evaporator fan when a requirement for cooling is determined and increasing the power supplied to the compressor and maintaining the evaporator fan at a first speed when increased cooling is determined.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: August 12, 2014
    Assignees: Thermo King Corporation, Johnson Controls Technology Company
    Inventors: Ole Thogersen, Allan Dyrmose, Dan Vad Steffensen
  • Patent number: 8789382
    Abstract: A heat pump including at least two refrigerant injection flow paths into a scroll compressor and a main circuit. The main circuit includes a scroll compressor, a condenser, an expansion valve, a phase separator, and an evaporator for evaporating refrigerant. The scroll compressor is provided with a first refrigerant injection port between an inlet of the scroll compressor and an outlet of the scroll compressor, and a second refrigerant injection port between the inlet and the first refrigerant injection port. A first refrigerant injection flow path is bypassed from the phase separator. An internal heat exchanger is installed between the phase separator and the evaporator. A second refrigerant injection flow path is bypassed between the phase separator and the internal heat exchanger. The second refrigerant injection flow path is passed through the internal heat exchanger.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: July 29, 2014
    Assignee: LG Electronics Inc.
    Inventors: Younghwan Ko, Sangkyoung Park, Yonghee Jang, Bumsuk Kim
  • Patent number: 8733117
    Abstract: An incubator includes: an enclosure including a culture chamber; a heater configured to heat the culture chamber; a refrigerator including an evaporator and a condenser, and configured to cool the culture chamber; a temperature sensor configured to measure the culture chamber temperature; a refrigerator control unit configured to cause the refrigerator to operate, when a measured temperature measured by the temperature sensor reaches a refrigerator-operation temperature, higher than the set temperature by a first temperature, and cause the refrigerator to stop operating, when the measured temperature reaches a refrigerator-operation stopping temperature, lower than the set temperature by a second temperature; a heater control unit configured to control the heater in such a manner that the measured temperature reaches the refrigerator-operation temperature, when operation of the refrigerator is stopped; and a drain mechanism configured to discharge dew condensation water generated through heat absorption by th
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: May 27, 2014
    Assignee: Panasonic Healthcare Co., Ltd.
    Inventor: Ryuichi Tsuruma
  • Patent number: 8733118
    Abstract: To provide a heat pump water heater outdoor unit and heat pump water heater capable of preventing reduction in heating/hot water supply ability even at a low ambient temperature.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: May 27, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takahiro Ushijima, Kazuki Okada
  • Publication number: 20140083122
    Abstract: An air conditioner includes a first compressor and a first indoor heat exchanger, and the air conditioner forming a first refrigeration cycle. A cooler includes a second compressor and a second indoor heat exchanger, and the cooler forming a second refrigeration cycle The cooler includes a sensing part to detect a pressure and/or temperature of a refrigerant circulating in the second refrigeration cycle; and a branch part includes a plurality of branches for dividing the refrigerant to be introduced into the second heat exchange part.
    Type: Application
    Filed: June 6, 2013
    Publication date: March 27, 2014
    Inventors: Doyong Ha, Yoonho Yoo, Taehee Kwak, Jaeheuk Choi
  • Patent number: 8672022
    Abstract: A method and a correspondingly designed motor vehicle are provided for pre-climatizing the motor vehicle when shut-off by way of a heating and/or cooling unit, which draws its energy for heating and/or cooling from an electric storage unit. When the heating and/or cooling unit is activated by a vehicle external operator control element, the heating and/or cooling unit is initially activated in a first output stage. Then, the heating and/or cooling unit is switched from the first output stage to a second output stage as a function of predetermined conditions.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: March 18, 2014
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Ralph Ostermeier, Peter Satzger, Georg Gerstenbrandt
  • Patent number: 8607582
    Abstract: A refrigeration system for a container for refrigerating chilled cargo includes a compressor, a condenser, and an evaporator connected in series. The system further includes a heater and sensors configured to sense the temperature of the supply air and the temperature of the return air. A controller is programmed to determine one of a requirement for heating and a requirement for cooling based on the temperature of the return air and the temperature of the supply air. The controller is programmed to activate the evaporator fan when a requirement for heating is determined and to increase the speed of the evaporator fan when increased heating is determined. The controller is also programmed to activate the compressor and the evaporator fan when a requirement for cooling is determined and to increase the power supplied to the compressor and maintain the evaporator fan at a first speed when increased cooling is determined.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: December 17, 2013
    Assignees: Thermo King Corporation, Johnson Controls Technology Company
    Inventors: Ole Thøgersen, Allan Dyrmose, Dan Vad Steffensen
  • Publication number: 20130239601
    Abstract: A heat pump having a supplemental resistive heat element that varies its heat output based on the air temperature downstream from it, rather than from the air temperature at the room thermostat or from the air temperature after the heat exchanger but before the variable supplemental resistive heating element.
    Type: Application
    Filed: March 19, 2012
    Publication date: September 19, 2013
    Inventor: Luther D. Albertson
  • Patent number: 8516841
    Abstract: A heating and air conditioning device 20 for an automotive vehicle, including a refrigerant circuit 4 in which a refrigerant circulates between three distinctive units 6, 10, 14 exchanging with respective secondary liquid loops 8, 12, 16. An evaporating unit 6 is dedicated to the evaporation of the refrigerant when operating in a cooling mode. A cooling unit 10 is dedicated to the cooling or condensation of the refrigerant when operating in the cooling mode as well as operating in the heating mode. A reversible unit 14 is dedicated to the evaporation of the refrigerant when operating in the heating mode and dedicated to the cooling or condensation of the refrigerant when operating in the cooling mode.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: August 27, 2013
    Assignee: Valeo Systems Thermiques
    Inventors: Klaus Wittmann, Daniel Neveu, Jean Luc Thuez, Didier Barat
  • Publication number: 20130199224
    Abstract: While a compressor is stopped, a change rate of a refrigerant temperature per predetermined time is calculated on the basis of a value detected by a refrigerant temperature sensor, and a heating amount from a compressor heating unit to the compressor is made proportional to the change rate of the refrigerant temperature.
    Type: Application
    Filed: November 4, 2010
    Publication date: August 8, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yohei Kato, Naoki Wakuta
  • Publication number: 20130133345
    Abstract: An air conditioner and a method of operating an air conditioner are provided. The air conditioner may include at least one indoor device, each having an indoor heat exchanger installed therein; at least one outdoor device connected to the at least one indoor device by a refrigerant flow path, and each having a water-refrigerant heat exchanger that provides heat exchange between a refrigerant and heat source water and an outdoor device controller installed therein; a heat source water flow path connected to each water-refrigerant heat exchanger; a pump installed on the heat source water flow path; a variable flow valve installed on the heat source water flow path; a central controller that controls the at least one outdoor device; and a variable flow valve control board that regulates an opening degree of the variable flow valve and a flow rate of heat source water.
    Type: Application
    Filed: September 14, 2012
    Publication date: May 30, 2013
    Inventors: Junhyeon Hwang, Hongseok Choi, Changwon Cho
  • Publication number: 20130111932
    Abstract: A the battery warm-up apparatus includes an electric motor, a battery, an electric generator for charging the battery, an engine for driving the electric generator, a refrigeration circuit arranged to pass through inside the engine in a manner that a temperature medium flows through an inside thereof, a heat exchanger, a battery-heating channel branched from the refrigeration circuit, arranged to pass through the battery and connected to the refrigeration circuit again, a first switching valve arranged at a first portion of the refrigeration circuit, the battery-heating channel being branched from the refrigeration circuit at the first portion, the first switching valve connecting and disconnecting the battery-heating channel relative to the refrigeration circuit, a battery temperature sensor, and a controller for operating the first switching valve on the basis of temperature of the battery and for allowing the temperature medium to flow through the battery-heating channel.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 9, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Aisin Seiki Kabushiki Kaisha
  • Publication number: 20130104574
    Abstract: A hybrid space and water heating heat pump system includes a heat pump including an outdoor assembly and an indoor assembly; a hot water module including a first heat exchanger, a controller, and a water pump connected to a water line, the first heat exchanger being configured for heating water; and a water heater in fluid communication with the hot water module, the water heater configured for receiving heated water from the first heat exchanger; wherein the controller is configured to select between one of conditioning an interior space or heating of the water in the first heat exchanger; and wherein the heat pump is configured for circulating a refrigerant through a first refrigerant circuit in response to the conditioning of the interior space and circulating the refrigerant through a second refrigerant circuit in response to the heating of the water in the first heat exchanger.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 2, 2013
    Inventors: Daniel J. Dempsey, Derek Leman, Jiachuan Wang, Larry D. Burns, Matt A. Gibson, Matthew Austin, Troy A. Branam
  • Patent number: 8418485
    Abstract: There is provided a temperature switching compartment 3 which can switch the internal temperature thereof between a low temperature side at which a storage material is kept in cold storage and a high temperature side maintained at 50° C., to 80° C. at which cooked food is kept warm, by cooling with a cooler 17 and heating with a heater 15.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: April 16, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masayasu Nishita, Yoshinari Fujihara, Yasuji Ohshiro, Kayo Takashima
  • Publication number: 20130055743
    Abstract: An air-conditioner for a vehicle includes a vapor-compression refrigeration cycle, a determination unit and a controller. The refrigeration cycle includes a compressor, an inside condenser, an outside heat exchanger, and an inside evaporator. The refrigeration cycle is capable of operating an outside-air heat-absorption heating operation in which refrigerant absorbs heat at the outside heat exchanger and radiates heat at the inside condenser, and an inside-air heat-absorption heating operation in which refrigerant absorbs heat at the inside evaporator and radiates heat at the inside condenser. The determination unit determines whether or not the outside heat exchanger freezes. The controller changes over the outside-air heat-absorption heating operation to the inside-air heat-absorption heating operation when the determination unit determines that the outside heat exchanger freezes.
    Type: Application
    Filed: April 25, 2011
    Publication date: March 7, 2013
    Inventors: Takeshi Ogasawara, Jun Hatakeyama
  • Publication number: 20130047649
    Abstract: A cooling unit constructed in accordance with one example of the present disclosure includes an outer shell that defines an interior volume. A cooling system cools the interior volume. A temperature sensor senses a temperature within the interior volume. A heating element is disposed within the interior volume. A controller communicates with the temperature sensor and the heating element and activates the heating element based on the temperature satisfying a threshold.
    Type: Application
    Filed: August 14, 2012
    Publication date: February 28, 2013
    Inventors: Pieter Dirk Berkhout, Joost Moelands
  • Publication number: 20130025301
    Abstract: An operating method in a heat pump hot water supply system of an indirect heating method by which an average COP during a water heating period can be improved and a risk of running out of hot water can be prevented from increasing. For a heat pump hot water supply system of the indirect heating method, a change in heat transfer efficiency of a second heat exchanger is estimated by using either or both of a tank water temperature and a temperature of a second refrigerant flowing through a water circuit. When the heat transfer efficiency is determined to be high, an operation switching unit raises an output of a heat source device. When the heat transfer efficiency is determined to be low, the operation switching unit lowers the output of the heat source device.
    Type: Application
    Filed: April 7, 2011
    Publication date: January 31, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroshi Maitani, Masashi Fujitsuka, Motohiko Kawagishi, Yoshihiro Takahashi
  • Publication number: 20130025300
    Abstract: An energy efficient heat pump system capable of operating in extreme low and high temperature environments. The heat pump system includes an evaporator, a heater operatively associated with the evaporator, compressor and condenser. In an exemplary embodiment, the heat pump system may further include a plasma pulse-spark system to facilitate removal of scale deposits. The heater heats an environmental medium prior to the environmental medium exchanging energy with a refrigerant located in an evaporator coil of the evaporator in order to maintain a predetermined minimum temperature differential between the environmental medium when it contacts the evaporator coil and the refrigerant when located in the evaporator coil. The system allows efficient operation at low temperatures.
    Type: Application
    Filed: April 11, 2011
    Publication date: January 31, 2013
    Applicant: DREXEL UNIVERSITY
    Inventor: Young I. Cho
  • Publication number: 20130000336
    Abstract: A cooling box to perform temperature control so that an internal temperature of the cooling box storing an item to be refrigerated becomes equal to a set temperature includes: a control device including an ambient-temperature sensor to detect an ambient temperature of the box, and adjust a supply amount of warm air into the box after stopping supply of cold air thereinto based on the ambient temperature; and a thermally-insulating-door sensor to detect whether an opening connected with the interior of the cooling box is in either an open or closed state, when the sensor detects a change of the opening from an open to closed state, the control device executing control so that the warm-air-supply-amount reaches a first value until a predetermined period has elapsed, and executing control so that the warm-air-supply-amount reaches a second value smaller than the first value after the predetermined period has elapsed.
    Type: Application
    Filed: June 28, 2012
    Publication date: January 3, 2013
    Applicant: PANASONIC HEALTHCARE CO., LTD.
    Inventors: Atsushi Hagiwara, Ryuichi Tsuruma, Yuichi Tamaoki
  • Publication number: 20120318013
    Abstract: An vehicular air-conditioner includes a refrigeration cycle including a compressor, an outside condenser, an interior condenser, an evaporator, an expansion valve, a bypass-path bypassing the outside condenser, a cooling path that circulates refrigerant through the outside condenser, a heating path that circulates refrigerant through the bypass-path, and a changeover valve that changes a refrigerant circulation path to one of the cooling and heating paths, a high-pressure detector that detects a high-pressure-side pressure of the refrigeration cycle, and a controller. The controller controls, upon a changeover command to a heating mode during a cooling mode, the changeover valve to change the refrigerant circulation path from the cooling path to the heating path after the high-pressure-side pressure detected by the high-pressure detector becomes equal-to/lower-than a target pressure.
    Type: Application
    Filed: March 2, 2011
    Publication date: December 20, 2012
    Applicant: CALSONIC KANSEI CORPORATION
    Inventors: Masaru Hozumi, Toshihiro Takei