Compressor-condenser-evaporator Circuit Patents (Class 62/498)
  • Patent number: 10495331
    Abstract: An air conditioner includes: an outdoor unit; a plurality of indoor units respectively including indoor heat exchangers; expansion valves respectively provided to the plurality of indoor units, the expansion valves being configured to adjust flow rates of a refrigerant in the indoor heat exchangers; and a controller for executing a refrigerant amount balance control for adjusting opening degrees of the expansion valves so that operation state amounts, with which the indoor heat exchangers exert heat exchange amounts, of the plurality of indoor units become equal to each other.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: December 3, 2019
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Yasuhiro Oka, Takahiro Matsunaga, Takashi Kimura, Shigeaki Suyama, Kotaro Toya
  • Patent number: 10401063
    Abstract: There is disclosed herein a subsystem for a vapor-compression system having a compressor and a condenser. The subsystem includes a storage assembly fluidly communicable with a compressor inlet of the compressor for flow of refrigerant. The storage assembly is configured to receive and store refrigerant in a storing configuration, and release refrigerant stored therein to the compressor inlet of the compressor in a releasing configuration. The subsystem further includes a flow-directing assembly in fluid communication with the storage assembly for flow of refrigerant, and fluidly communicable with a condenser inlet of the condenser and a compressor outlet of the compressor for flow of refrigerant. The flow-directing assembly is configured to direct refrigerant from the compressor outlet to the storage assembly in a first flow configuration, and direct refrigerant from the compressor outlet to the condenser inlet in a second flow configuration.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: September 3, 2019
    Assignee: CRESSTEC RAC IP PTY. LTD.
    Inventor: Ian David Nankivell
  • Patent number: 10359121
    Abstract: A control valve includes a casing having an inlet port for a fluid, an axially rotatable valve accommodated in the casing and having a flow path communicating with the inlet port. An upstream outlet port and a downstream outlet port passing through the casing are formed at intervals in the casing. An upstream communication port and a downstream communication port, which respectively communicate between an inside of the flow path and the upstream outlet port and between the inside of the flow path and the downstream outlet port according to a rotational position of the valve are formed in the valve. A flowing direction changing portion for changing a flowing direction of the fluid in the flow passage is provided in a portion of the flow path which is located on a downstream side in relation to the upstream communication port in the flowing direction of the fluid.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: July 23, 2019
    Assignee: YAMADA MANUFACTURING CO., LTD.
    Inventor: Akifumi Ozeki
  • Patent number: 10337767
    Abstract: A multi-compartment transport refrigeration system (10) includes a first evaporator (40) having an first evaporator inlet coupled to a first evaporator expansion device (140) and a first evaporator outlet coupled to a compressor inlet path, the first evaporator for cooling a first compartment of a container at a first temperature; a second evaporator (609 having a second evaporator inlet coupled to a second evaporator expansion device (160) and a second evaporator outlet coupled to the compressor inlet path, the second evaporator for cooling a second compartment of the container at a second temperature greater than the first temperature; and a controller (550) for controlling the first evaporator expansion device in response to a first superheat setpoint and controlling the second evaporator expansion device in response to a second superheat setpoint, the controller adjusting the second superheat setpoint in response to the second temperature and the first temperature.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: July 2, 2019
    Assignee: CARRIER CORPORATION
    Inventors: Raymond L. Senf, Jr., Wenhua Li
  • Patent number: 10301521
    Abstract: Disclosed are refrigerants comprising at least about 97% by weight of a blend of three compounds, said blend consisting of: from about 40% by weight to about 49% by weight difluoromethane (HFC-32), from about 6% by weight to about 12% by weight pentafluoroethane (HFC-125), from about 33% by weight to about 40% by weight trifluoroiodomethane (CF3I); and from about 2% by weight to about 12% by weight of trans 1,3,3,3-tetrafluoropropene (trans HFO-1234ze), wherein the percentages are based on the total weight of the three compounds in the blend, and systems and method using same.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: May 28, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Ankit Sethi, Samuel F. Yana Motta, Gustavo Pottker, Gregory Laurence Smith, Elizabet del Carmen Vera Becerra, Yang Zou, Joshua Close
  • Patent number: 10254029
    Abstract: A refrigeration system, including: an electronic control unit, including a housing and an electronic device arranged in the housing; a refrigeration loop, including a compressor, a condenser, a primary throttling element, and an evaporator sequentially connected through a pipeline and forming a closed loop; and an electronic device cooling branch connected into the refrigeration loop from the condenser, and connected back to the refrigeration loop from the evaporator; the electronic device cooling branch including an electronic device cooling unit, a secondary throttling element, and an electromagnetic valve; and the electronic device cooling unit being arranged in the housing and spaced apart from the electronic device, for reducing the temperature and humidity of the electronic device and an environment in the housing.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: April 9, 2019
    Assignee: CARRIER CORPORATION
    Inventors: Michael A. Stark, Lei Wang, Jianxin Huang, Chaoqun Yan
  • Patent number: 10253774
    Abstract: A compressor includes a closed container housing a compression element driven by the shaft of a motor. The compression element includes a first and second bearings supporting first and second shaft portions, and at least one cylinder having at least one cylinder chamber disposed between the first and second bearings. At least one roller is fitted to the shaft in the at least one cylinder chamber. The first bearing is disposed closer to the motor than the second bearing. The first and second bearings have first and second annular grooves opened to the at least one cylinder chamber and first and second elastic portions provided in first and second opposing surfaces, respectively. A diameter of the second shaft portion is smaller than a diameter of the first shaft portion. A rigidity of the second elastic portion is smaller than a rigidity of the first elastic portion.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: April 9, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Takehiro Kanayama, Naoto Tomioka, Yuuichirou Watanabe
  • Patent number: 10222096
    Abstract: An isothermal turbo-compressor-condenser-expander (ITCCE) includes heat-transferring fan blades that are mounted on, or surround, individual conduits to promote air exchange and heat transfer. In operation, the open framework rotates in free air to promote heat exchange. An ITCCE bladed assembly includes a driven central hub assembly with a first fluid coupling. A first inner plenum is in fluid communication with the fluid coupling. A plurality of compressor multiport conduits extend radially, and pass fluid from, the first inner plenum to an outer plenum that acts as an equalizing line. A return path is provided to the fluid coupling from the outer plenum. The conduits can be formed as metal extrusions, including internal ribs that separate a plurality of ports formed therebetween along an entire length of the conduits. The conduits can define an airfoil shape and/or are axially twisted, generating axial airflow. The return path can include return multiport conduits.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: March 5, 2019
    Assignee: Appollo Wind Technologies LLC
    Inventors: Peter A. Swett, Randell B. Drane
  • Patent number: 10222086
    Abstract: A refrigeration cycle apparatus includes a refrigerant circuit including a compressor, an indoor heat exchanger, an expansion device, and an outdoor heat exchanger connected to each other via refrigerant pipes. The outdoor heat exchanger includes a heat transfer pipe, and a plurality of fins. The outdoor heat exchanger is configured so that a ratio of a heat capacity of the plurality of fins to a total of heat capacities of the heat transfer pipe and the plurality of fins is not more than 50%. The refrigeration cycle apparatus has a mixed defrosting operation mode in which a hot gas defrosting operation and a reverse-defrosting operation are performed in sequence. In the hot gas defrosting operation, hot gas discharged from the compressor is supplied to the outdoor heat exchanger. In the reverse-defrosting operation, refrigerant passing through the indoor heat exchanger is supplied from the compressor to the outdoor heat exchanger.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: March 5, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusuke Tashiro, Shin Nakamura
  • Patent number: 10174641
    Abstract: A Rankine cycle system for a vehicle having a dual fluid circulation circuit includes a high temperature (HT) loop in which a HT working fluid is converted to steam by heat of exhaust gas discharged from an engine. The steam is condensed back into the liquid state of the HT working fluid. A Low Temperature (LT) loop in which a temperature of an LT working fluid converted to steam is increased so that power is generated while the LT working fluid cools the HT working fluid in the HT loop, and the steam is condensed back into the liquid state of the LT working fluid. An engine coolant circulation auxiliary line forming a circulation flow in which engine coolant heats the LT working fluid and is then returned to the engine after the engine coolant circulated in the engine is supplied to the LT loop.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: January 8, 2019
    Assignees: HYUNDAI MOTOR COMPANY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS
    Inventors: Dong-Won Park, Kyung-Wook Choi, Ki-Hyung Lee
  • Patent number: 10075105
    Abstract: A rotor for an LSIPM comprises a plurality of permanent magnets defining a number of poles (“P”) of the LSIPM, and a plurality of rotor bars spaced about the rotor defining a rotor bar area (“BA”). The rotor bars are formed of a conductive material having an associated conductivity (“?RB”). End members are disposed on axial opposite ends of the rotor core. The end members are in electrical contact with the rotor bars. The end members are formed from a material having an associated conductivity (“?EM”). Each end ring member has a minimum geometric cross sectional area (“ERA”) and outer diameter that generally corresponds to the rotor core outer diameter. The ERA is greater than 0.5 times the rotor bar area per the number of poles (BA/P) times a ratio of the rotor bar material conductivity to the end member material conductivity (?RB/?EM).
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: September 11, 2018
    Assignee: Baldor Electric Company
    Inventors: Robert F. McElveen, Richard J. Budzynski
  • Patent number: 10047963
    Abstract: An indoor unit for an air-conditioning apparatus includes a case, an air-sending fan, and a heat exchanger unit. The heat exchanger unit includes a plurality of heat-transfer pipes extending in a vertical direction and forming a plurality of refrigerant passages in a width direction of the case and an air flow direction, and a plurality of headers connected to both ends of the plurality of heat-transfer pipes to allow the refrigerant to flow between the plurality of heat-transfer pipes. The plurality of headers include a plurality of division headers dividing and connecting the plurality of heat-transfer pipes arranged in the air flow direction and connecting in parallel the plurality of heat-transfer pipes arranged in the width direction, and a return header connecting and turning back the plurality of divided refrigerant passages arranged in the air flow direction and connecting in parallel the plurality of heat-transfer pipes arranged in the width direction.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: August 14, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuki Ugajin, Hideaki Maeyama, Akira Ishibashi
  • Patent number: 10041712
    Abstract: A refrigerant distributor includes an inlet pipe, a header pipe to which the inlet pipe has been connected and a plurality of refrigerant pipes connected to one end side of the header pipe which is opposite to the side that the inlet pipe is connected, below the inlet pipe in a vertical direction, and is configured such that a refrigerant which has flown into the header pipe through the inlet pipe is distributed into the plurality of refrigerant pipes. The header pipe is arranged such that a vertical upper side of the header pipe is inclined toward the one end side that the refrigerant pipes are connected. Thereby, it is possible to stably distribute the refrigerant to each refrigerant pipe while suppressing an increase in cost under flow rate conditions ranging from a rated operation condition to a low rotating speed operation condition.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: August 7, 2018
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Masanori Ishikawa, Eiji Ishii, Sachio Sekiya, Shigeyuki Sasaki
  • Patent number: 10001116
    Abstract: In a sealed compressor, electrically-operated element (104) and compressive element (106) driven by electrically-operated element (104) are housed in the inside of sealed container (102). Compressive element (106) includes shaft (126) formed of main shaft (136) and eccentric shaft (134), and cylinder block (128) having; bearing (144) which pivotally supports main shaft (136) of shaft (126); and cylinder (142). Further, the compressive element (106) includes piston (130) which is movable in the cylinder (142) in a reciprocating manner, and connecting portion (132) which connects eccentric shaft (134) and piston (130) to each other. Electrically-operated element (104) is formed of an outer-rotor-type motor which includes stator (150), and rotor (152) which is disposed coaxially with stator (150) so as to surround an outer periphery of stator (150).
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: June 19, 2018
    Assignee: PANASONIC CORPORATION
    Inventor: Seigo Yanase
  • Patent number: 9982180
    Abstract: Compositions, methods and systems which comprise or utilize a multi-component mixture comprising: (a) HFC-32; (b) HFC-125; (c) HFO-1234ze, HFO-1234yf and combinations of these; and (d) optionally HFC-134a.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 29, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Gustavo Pottker, Mark W. Spatz, Samuel F. Yana Motta
  • Patent number: 9969241
    Abstract: A heat exchanger air control system is provided that utilizes a central heat exchanger and a pair of side-mounted heat exchangers, where the side-mounted heat exchangers are positioned forward of the central heat exchanger. The air outlets of the side-mounted heat exchangers are coupled to both the air inlet and the air outlet of the central heat exchanger using several air ducts through which air flow is controlled, thus allowing air flow throughout the system to be optimized based on the needs of the thermal systems coupled to the heat exchangers. A single fan proximate to the outlet of the central heat exchanger can be used to draw air through any combination of the three heat exchangers.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: May 15, 2018
    Assignee: ATIEVA, INC.
    Inventor: Graham Lloyd Feltham
  • Patent number: 9943211
    Abstract: A dish treating appliance for treating dishes according to a cycle of operation can include a tub defining a treating chamber. The treating chamber can fluidly couple to condenser having an inlet, an outlet, and a condensing passage. The condenser can further include multiple ambient air inlets to mix humid air drawn from the treating chamber with ambient air within the condenser. The condenser can further integrate a water inlet with a condenser outlet, such that a water supply and condensed liquid can be provided to the treating chamber through the same opening.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: April 17, 2018
    Assignee: Whirlpool Corporation
    Inventors: Alvaro Vallejo Noriega, Subhash N. Varvate, Patrick J. Duffy, Gautam P. Kamat, Thomas M. DeLellis
  • Patent number: 9945621
    Abstract: A cooling device has an elastic fixing member for fixing a valve which is cooperating with a compressor and disposed in a compressor room of a heat insulated body. The cooling device includes a bearing bracket for fixing the valve in the compressor room. The uniform elastic fixing member has at least one rear directional fixing extension for insertion into at least one locking hole of the bearing bracket, at least one fixing extension formed opposite the rear directional fixing extension for insertion into at least one hole on the valve, and an insulator section for reclining the valve.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: April 17, 2018
    Assignee: BSH Hausgeraete GmbH
    Inventors: Sueleyman Bayram, Murat Darka, Dogan Kilinc, Istem Oezkan
  • Patent number: 9933192
    Abstract: An air-conditioning apparatus includes a plurality of indoor units each located inside a building and at a position that enables the indoor unit to condition air, and a relay unit installed in a space not to be air-conditioned inside the building. The relay unit and each indoor unit are connected to each other via a first heat medium pipe in which a first heat medium such as water or brine flows. The relay unit accommodates therein a first refrigerant circuit including a compressor, a plurality of first intermediate heat exchangers that exchange heat between the first heat medium and refrigerant that performs a phase shift or turns to a supercritical state during operation, a plurality of expansion devices, and a second intermediate heat exchanger that exchanges heat between the refrigerant and a second heat medium, which are connected via a refrigerant pipe.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: April 3, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventor: Koji Yamashita
  • Patent number: 9895953
    Abstract: A heat exchanger air control system is provided that utilizes a central heat exchanger and a pair of side-mounted heat exchangers, where the central heat exchanger is positioned forward of the side-mounted heat exchangers. The air outlet of the central heat exchanger is coupled to both the air inlet and the air outlet of each of the side-mounted heat exchangers using several air ducts through which air flow is controlled, thus allowing air flow throughout the system to be optimized based on the needs of the thermal systems coupled to the heat exchangers. A pair of fans, one adjacent to the outlet of each of the side-mounted heat exchangers, can be used to draw air through various combinations of the three heat exchangers.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: February 20, 2018
    Assignee: ATIEVA, INC.
    Inventor: Graham Lloyd Feltham
  • Patent number: 9874379
    Abstract: A cooling system with a compression cooling cycle for a working fluid that passes an expendable fluid through a warm side heat exchanger for the cooling system to cause the expendable fluid to vaporize and thus absorb heat from the working fluid by way of latent heat or enthalpy of vaporization and then running the vaporized expendable through a turbine that drives a compressor for the cooling system.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: January 23, 2018
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Michael J. Andres
  • Patent number: 9857088
    Abstract: An air-conditioning apparatus includes a refrigerant circuit formed by connecting pipes, a compressor including a compression chamber and an injection port through which refrigerant is introduced into the compression chamber, a first heat exchanger, a subcooling heat exchanger that includes a first flow passage and a second flow passage and exchanges heat between refrigerant flowing in the first flow passage and refrigerant flowing in the second flow passage to subcool the refrigerant flowing in the first flow passage, a first expansion device, a second heat exchanger, and an accumulator In addition, a first bypass pipe connects the second flow passage of the subcooling heat exchanger with a segment of the pipes, positioned on a refrigerant inflow side of the accumulator; an expansion device to adjust a flow rate of the refrigerant flowing in the first bypass pipe; a second bypass pipe that connects a segment of the pipes with the injection port, the segment being positioned between the first heat exchanger a
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: January 2, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Yamashita, Katsuhiro Ishimura, Takeshi Hatomura, Soshi Ikeda, Shinichi Wakamoto, Naofumi Takenaka
  • Patent number: 9848508
    Abstract: A cooling system includes a diaphragm, at least one conductor layer disposed on the diaphragm, at least one dielectric film layer, and a controller. The controller is programmed to operate the cooling system in a contact mode and in a non-contact mode. In the contact mode, the diaphragm is controlled to oscillate at a first amplitude such that the conductor layer contacts the dielectric film layer. In the non-contact mode, the diaphragm is controlled to oscillate at a second amplitude such that the conductor layer does not contact the dielectric film layer while the diaphragm oscillates.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: December 19, 2017
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventors: Songtao Wu, Shailesh Joshi, Debasish Banerjee
  • Patent number: 9755484
    Abstract: A liquid cooled generator is provided having a rotor having a central core and a main stator winding wrapped around the central core. A first laminate at a first end of the central core is provided having a first orifice defining a first diameter and a second laminate at a second end of the central core is provided having a second orifice defining a second diameter that is the same as the first diameter. A flow line passes through the central core and is configured to extend from the first laminate to the second laminate, the flow line defining a third diameter that is larger than the first and second diameters. The first and second diameters are configured such that air flow is permitted to pass through the first and second laminates and to restrict the flow of a liquid through the first and second laminates.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: September 5, 2017
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Patent number: 9611849
    Abstract: A system may be operable to circulate a working fluid between first and second heat exchangers. The system may include a suction line, a low-side compressor, a high-side compressor and a discharge line. The low-side and high-side compressors may both be in fluid communication with the suction and discharge lines.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: April 4, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Michael M. Perevozchikov, Kirill M. Ignatiev
  • Patent number: 9540554
    Abstract: A non-flammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture may include from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125, (d) from 25.5 weight percent to 30 weight percent HFC-134a, and optionally (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g., lubricants), in processes to produce cooling, in methods for replacing refrigerants R-404A, R-507, R-407A, R-407C, R-407F and/or R-22, and in refrigeration apparatuses.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: January 10, 2017
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Barbara Haviland Minor, Charles Clinton Allgood
  • Patent number: 9540555
    Abstract: In accordance with the present invention compositions are disclosed. The compositions consist of (A) a refrigerant component consisting essentially of (1) at least one refrigerant having an OEL less than 400; and (2) a combination of refrigerants, each having an OEL greater than 400, consisting essentially of (i) HFC-32; and (ii) trans-HFO-1234ze; and optionally (B) a non-refrigerant component; wherein component (A)(2) of the refrigerant component is present in an amount sufficient to provide an overall OEL for the refrigerant component of at least 400. The refrigerant mixtures of the refrigerant component are useful as components in compositions also containing non-refrigerant components (e.g. lubricants), in processes to produce refrigeration, in methods for replacing refrigerant R-410A, and in air conditioning and heat pump apparatus.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: January 10, 2017
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventor: Barbara Haviland Minor
  • Patent number: 9528727
    Abstract: A method to control a fixed-sequence dual evaporator cooling system including providing a recurring cooling cycle cooling system wherein each recurring cooling cycle comprises first and second cooling cycles for cooling respective first and second interiors, a pump-out cycle for returning coolant to a condenser, and an idle cycle, and providing a processor to establish exceptions to the recurring cooling cycle. A step includes the processor monitoring first and second actual temperatures of the respective first and second interiors, selecting predetermined first and second control temperatures for the respective first and second interiors, and selecting a command input signal to supply to a compressor, the condenser fan, the first and second evaporator fans, and the valve of the cooling system during the recurring cooling cycle based upon the first and second actual temperatures and the predetermined first and second control temperatures to initiate the established exceptions.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 27, 2016
    Assignee: Whirlpool Corporation
    Inventors: Alberto R. Gomes, Andrew D. Litch
  • Patent number: 9523027
    Abstract: A non-flammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture consists essentially of (a) from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125 (d) from 25.5 weight percent to 30 weight percent HFC-134a, and (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g. lubricants), in processes to produce cooling, in methods for replacing refrigerant R-404A or R-507, and in refrigeration apparatus.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: December 20, 2016
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventor: Barbara Haviland Minor
  • Patent number: 9459053
    Abstract: A plate fin includes a slit structure formed by cutting and raising a portion of the plate fin to form an opening facing a flow direction of a fluid and a waffle structure formed by bending a portion of the plate fin to form a protrusion having an angle-shaped cross section which protrudes in a stack direction and having a ridge substantially perpendicular to the air flow direction, and the waffle structure is disposed on the upstream side on the plate fins with respect to the slit structure and a slant length L1 on the upstream side of the waffle structure is smaller than a slant length L2 on the downstream side of the waffle structure.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: October 4, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Sangmu Lee, Takuya Matsuda, Akira Ishibashi, Takashi Okazaki
  • Patent number: 9395105
    Abstract: In a refrigeration cycle device, a design volume ratio, obtained by dividing a stroke volume of a sub-compressor by a stroke volume of an expander, is set to be smaller than (DE/DC)×(hE?hF)/(hB?hA). With an operating efficiency being the maximum in an operating range allowed to be set of the refrigeration cycle device, DE is a density of a refrigerant, which has flowed out from a radiator, DC is a density of the refrigerant, which has flowed out from an evaporator, hE is a specific enthalpy of the refrigerant flowing into the expander, hF is a specific enthalpy of the refrigerant, which has flowed out from the expander, hA is a specific enthalpy of the refrigerant sucked by a main compressor, and hB is a specific enthalpy of the refrigerant at an intermediate position of a compression process of the main compressor.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 19, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusuke Shimazu, Keisuke Takayama, Masayuki Kakuda, Hideaki Nagata, Takeshi Hatomura
  • Patent number: 9359540
    Abstract: A ternary composition including: from 5 to 50% of difluoromethane; from 2 to 20% of pentafluoroethane; and from 30 to 90% of tetrafluoropropene. The tetrafluoropropene may be 1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene. This composition can be used as a heat-transfer fluid in vapor compression circuit. A process for heating or cooling a fluid or a body using a vapor compression circuit containing a heat transfer fluid, said process successively including evaporation of the heat transfer fluid, compression of the heat transfer fluid, condensation of the heat fluid and depressurization of the heat transfer fluid, in which the heat transfer fluid is a composition as described.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: June 7, 2016
    Assignee: ARKEMA FRANCE
    Inventor: Wissam Rached
  • Patent number: 9360259
    Abstract: A heat exchanger is provided in which a large number of plate-shaped fins are attached to outer peripheries of heat transfer tubes through which refrigerant flows. Three rows of heat transfer tubes are arranged along an air flow direction. An inlet side heat transfer tube in a case of using as an evaporator or an outlet side heat transfer tube in a case of using as a condenser has the smallest diameter. In a case where the most windward side heat transfer tube has the smallest diameter, a tube diameter of the most windward side heat transfer tube is D1, a tube diameter of the middle heat transfer tube is D2, and a tube diameter of the most leeward side is D3, D1<D2=D3, 4 mm?D3?10 mm, and 0.6?D1/D3<1 are satisfied.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: June 7, 2016
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshio Oritani, Masanori Jindou, Hideki Sawamizu, Yoshimasa Kikuchi, Kanji Akai
  • Patent number: 9285035
    Abstract: A valve comprising an inlet opening adapted to receive fluid medium and at least two outlet openings, each being fluidly connected to a flow path being arranged fluidly in parallel, is disclosed. The valve comprises a first valve part (1) and a second valve part (3). The first valve part (1) has at least two flow passages (2) formed therein, each flow passage (2) being fluidly connected to one of the outlet openings. The second valve part (3) has at least one primary flow passage (4) and at least one secondary flow passage (5, 6, 7) formed therein, the primary flow passage(s) (4) and the secondary flow passage(s) (5, 6, 7) being fluidly connected to the inlet opening.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: March 15, 2016
    Assignee: Danfoss A/S
    Inventor: Claus Thybo
  • Patent number: 9279591
    Abstract: An air-conditioning apparatus includes a heat medium side device with plural pumps for circulating the heat medium related to the heating or the cooling of plural intermediate heat exchangers. Plural use side heat exchangers exchange heat between the heat medium and air. Plural flow path switching valves switch the flow path for supplying the heat medium related to a selected system among the heating media circulating in plural systems to each use side heat exchanger. A relay unit side control device controls the flow path switching valves so as to circulate the heat medium between the use side heat exchanger causing the heat medium to absorb the heat and the use side heat exchanger causing the heat medium to emit the preferentially set heat, when it is determined that it is impossible to perform the heating or the cooling of the heat medium by the intermediate heat exchanger.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: March 8, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shigeo Takata, Koji Yamashita
  • Patent number: 9103571
    Abstract: A refrigeration apparatus includes a multistage compression mechanism, a heat-source-side main heat exchanger, at least one heat-source-side sub heat exchanger, a usage-side heat exchanger, a switching mechanism, an expansion mechanism and a refrigerant piping group. The refrigerant piping group connects the multistage compression mechanism, the switching mechanism, the heat-source-side main heat exchanger, the heat-source-side sub heat exchanger, the expansion mechanism and the usage-side heat exchanger so that during the heating operation, the heat-source-side main heat exchanger and the heat-source-side sub heat exchanger are connected in series.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: August 11, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Guozhong Yang, Tetsuya Okamoto, Ikuhiro Iwata, Kazuhiro Furusho
  • Publication number: 20150143841
    Abstract: A refrigeration apparatus uses R32 as refrigerant, and includes a compressor, a condenser, an expansion mechanism, an evaporator, a branch flow channel branching from a main refrigerant channel joining the condenser and the evaporator, a first opening adjustable valve disposed along the branch flow channel, an injection heat exchanger, a first injection channel, a refrigerant storage tank disposed along the main refrigerant channel, and a second injection channel. The injection heat exchanger exchanges heat between refrigerant in the main refrigerant channel and refrigerant passing through the first opening adjustable valve. The first injection channel guides refrigerant that flows in the branch flow channel and that exits from the injection heat exchanger to the compressor or the suction passage. The second injection channel guides a gas component of refrigerant accumulated inside the refrigerant storage tank to the compressor or the suction passage.
    Type: Application
    Filed: April 19, 2013
    Publication date: May 28, 2015
    Inventors: Satoshi Kawano, Shinya Matsuoka, Masahiro Oka
  • Publication number: 20150135752
    Abstract: A refrigerating apparatus includes a high-temperature side circuit and a low-temperature side circuit connected to each other via a cascade condenser, a low-temperature side second flow control valve that turns a refrigerant, passing through a liquid pipe connecting between a cooling unit and other circuit parts in a low-temperature side circuit b, into a gas-liquid two-phase refrigerant, and an expansion tank connected to the suction side of a low-temperature circuit compressor via a tank electromagnetic valve.
    Type: Application
    Filed: August 20, 2012
    Publication date: May 21, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takeshi Sugimoto, So Nomoto, Tomotaka Ishikawa, Takashi Ikeda
  • Publication number: 20150135765
    Abstract: Compositions, methods and systems which comprise or utilize a multi-component mixture comprising: (a) HFC-32; (b) HFC-125; (c) HFO-1234yf and/or HFO-1234ze; (d) HFC-134a. In certain non-limiting aspects, such refrigerants may be used as a replacement for R-404A.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Inventors: SAMUEL F. YANA MOTTA, MARK W. SPATZ, RONALD P. VOGL, ELIZABET del CARMEN VERA BECERRA
  • Publication number: 20150135764
    Abstract: A scroll compressor and an air conditioner including a scroll compressor are provided. The scroll compressor may include a casing, a fixed scroll, an orbiting scroll, and an injection passage. The fixed scroll may further include a first injection hole and a second injection hole formed on a spiral flow passage, and a third injection hole and a fourth injection hole formed on the spiral flow passage at a position inwardly rotated by about 360 degrees from the first injection hole and the second injection hole along the spiral flow passage. The first injection hole and the third injection hole may be formed on an outer lane of the spiral flow passage, and the second injection hole and the fourth injection hole may be formed on an inner lane of the spiral flow passage.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 21, 2015
    Inventors: Byeongsu KIM, Byoungjin RYU, Beomchan KIM
  • Publication number: 20150128640
    Abstract: One exemplary embodiment of this disclosure relates to a centrifugal refrigerant compressor system. The system includes a condenser, an evaporator, and an economizer between the condenser and the evaporator. The system further includes a centrifugal compressor having a first impeller and a second impeller downstream of the first impeller. The compressor includes at least one port. Fluid from a recirculation flow path and an economizer flow path is introduced into a main flow path of the compressor by way of the at least one port.
    Type: Application
    Filed: September 8, 2014
    Publication date: May 14, 2015
    Inventors: Lin Sun, Salvador Quitaleg, Joost Brasz
  • Patent number: 9027362
    Abstract: Provided is a turbo compressor that includes: a compressor unit compressing a gas; a motor driving the compressor unit; and a motor casing accommodating the motor. In the turbo compressor, the motor casing includes: a body portion which is molded in a cylindrical shape; an annular diameter reduced portion which is connected to at least one end portion of the body portion in the rotation axis direction of the motor and of which the diameter is reduced as it moves away from the body portion; and a flat portion which is connected to the central end portion of the diameter reduced portion and is molded in a planar shape.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: May 12, 2015
    Assignee: IHI Corporation
    Inventors: Noriyasu Sugitani, Katsuya Fujisaku
  • Publication number: 20150121948
    Abstract: Provided is a pump that includes an annular molded stator having a substrate mounted with a Hall element and that includes a rotor having an annular rotor unit rotatably housed in a cup-shaped partition component, with one end thereof in an axial direction facing the Hall element and the other end thereof in the axial direction provided with an impeller attachment unit. The rotor unit includes a resin magnet, a sleeve bearing, and a resin portion. The resin magnet includes a rotor-position detecting magnetic-pole portion protruding axially with a predetermined height in an annular shape having a predetermined width in a radial direction on an outer periphery of an end face opposite to the Hall element. The rotor-position detecting magnetic-pole portion includes a plurality of arc-shaped notches on the same circumference on an inner diameter side thereof.
    Type: Application
    Filed: June 19, 2012
    Publication date: May 7, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuto Urabe, Hiroki Aso, Kazunori Sakanobe, Mineo Yamamoto, Hiroyuki Ishii, Junichiro Oya
  • Publication number: 20150121947
    Abstract: A vehicle includes a primary air conditioning device and an auxiliary air conditioning device each having a condenser, a receiver drier, an evaporator, and an expansion valve, an electrical air conditioning compressor coupled to the primary and the auxiliary air conditioning devices for operating the primary and the auxiliary air conditioning devices, and an alternator coupled to the electrical air conditioning compressor for energizing the electrical air conditioning compressor to operate the primary and the auxiliary air conditioning devices, and for allowing the auxiliary air conditioning device to be actuated to supply the cooling air to cool the vehicle even when the engine of the vehicle is shut off.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 7, 2015
    Inventor: Henry C. Chu
  • Publication number: 20150121910
    Abstract: The present invention relates, in part, to heat transfer and refrigerant compositions and methods that include HFC-32; HFO-1234ze and HFC-125.
    Type: Application
    Filed: January 9, 2015
    Publication date: May 7, 2015
    Inventors: Samuel F. Yana Motta, Mark W. Spatz, Elizabet Del Carmen Vera Becerra, Ankit Sethi, Thomas Morris
  • Publication number: 20150121928
    Abstract: A refrigerator includes a compressor compressing a refrigerant, a condenser condensing the refrigerant compressed in the compressor, a refrigerant tube guiding a flow of the refrigerant condensed in the condenser, an expansion device decompressing the refrigerant condensed in the condenser, and an evaporator evaporating the refrigerant decompressed in the expansion device. The evaporator includes an evaporation tube through which the refrigerant decompressed in the expansion device flows, a coupling tube through a refrigerant heat-exchanged with the refrigerant of the evaporator flows, and a heat-exchange fin coupled to the evaporation tube and the coupling tube.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Sangbong LEE, Jangseok Lee, Hyoungkeun Lim, Myungjin Chung, Minkyu Oh, Namsoo Cho
  • Publication number: 20150121926
    Abstract: A refrigerant is provided that may include at least one compressor that compresses a refrigerant, a condenser that condenses the refrigerant compressed in the at least one compressor, a first expansion device that decompresses the refrigerant condensed in the condenser, a gas/liquid separator that separates the refrigerant decompressed in the first expansion device into a liquid refrigerant and a gaseous refrigerant, first and second evaporators, to which the liquid refrigerant separated in the gas/liquid separator may be introduced, and a second expansion device disposed at an inlet-side of the second evaporator to decompress the refrigerant.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Applicant: LG ELECTRONICS INC.
    Inventors: Sangbong LEE, Jangseok LEE, Hyoungkeun LIM, Myungjin CHUNG, Minkyu OH
  • Publication number: 20150121918
    Abstract: The refrigerator includes a compressor compressing a refrigerant, a condenser condensing the refrigerant compressed in the compressor, and a dryer in which the refrigerant condensed in the condenser is introduced. The dryer removes impurities or moisture of the refrigerant. A flow adjustment part is provided on an outlet-side of the dryer to switch or control a flow direction of the refrigerant. A plurality of evaporators is connected to the flow adjustment part, and the plurality of evaporators includes a first evaporator and a second evaporator. A first refrigerant passage extends from the flow adjustment part to the first evaporator, and a second refrigerant passage extends from the flow adjustment part to the second evaporator. A guide tube extends from the dryer to one side of at least one evaporator of the plurality of evaporators to guide the refrigerant to be cooled.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Sangbong LEE, Jangseok Lee, Hyoungkeun Lim, Myungjin Chung, Minkyu Oh, Youngsu Jeong, Younggyu An
  • Publication number: 20150121946
    Abstract: A capacity-increasing device for a four-way valve, the four-way valve has a first port, a second port, a third port and a fourth port, wherein first port is connected with an output end of a compressor via a first line, second port is connected with an input end of the compressor via a second line, third port is connected with a first heat exchanger via a third line, and fourth port is connected with a second heat exchanger via a fourth line, the capacity-increasing device includes a first bypass line and a first valve, the first bypass line connected between third line and second line, the first valve in the first bypass line, a second bypass line and a second valve, the second bypass line connected between fourth line and second line, the second valve in the second bypass line.
    Type: Application
    Filed: December 12, 2012
    Publication date: May 7, 2015
    Inventors: Haijun Li, Pan Gao
  • Publication number: 20150121920
    Abstract: A refrigerator and a method for controlling the same may be provided. The refrigerator includes a compressor, a condenser condensing the refrigerant compressed in the compressor, a refrigerant tube for guiding the refrigerant condensed in the condenser, a flow adjustment part coupled to the refrigerant tube to divide the refrigerant into a plurality of refrigerant passages, a plurality of expansion devices respectively disposed in the plurality of refrigerant passages to decompress the refrigerant condensed in the condenser, a plurality of evaporators evaporating the refrigerant decompressed in the plurality of expansion devices, and a supercooling heat exchanger disposed at an outlet-side of the condenser to supercool the refrigerant. The refrigerant supercooled in the supercooling heat exchanger may be introduced into the flow adjustment part.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 7, 2015
    Applicant: LG ELECTRONICS INC.
    Inventors: Sangbong LEE, Jangseok LEE, Hyoungkeun LIM, Myungjin CHUNG, Minkyu OH