Assembling, Charging, Or Repairing Of Refrigeration Producer Patents (Class 62/77)
  • Patent number: 10845108
    Abstract: A refrigeration device includes a refrigerant circuit sequentially connecting a compressor, a condenser, a reservoir, and a subcooling coil via refrigerant pipes in series, an injection circuit configured to inject part of refrigerant flowing from the condenser to an intermediate pressure part of the compressor, and an injection expansion valve configured to reduce a pressure of refrigerant branched on a downstream side of the subcooling coil. The refrigeration device includes a temperature measurement unit, a pressure measurement unit, and a controller configured to identify a type of refrigerant on the basis of a measured value of the temperature measurement unit and a measured value of the pressure measurement unit, and control at least one of an operating frequency of the compressor, a rotation frequency of a condenser fan, and an opening degree of the injection expansion valve.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: November 24, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ryo Tsukiyama, Yusuke Arii, Tomotaka Ishikawa
  • Patent number: 10837685
    Abstract: A heating, ventilation, and air conditioning system may include a refrigerant loop to circulate refrigerant, a first valve, a second valve, a sensor to measure parameters of the refrigerant, a refrigerant tank fluidly coupled to the refrigerant loop via the valves, and control circuitry communicatively coupled to the sensor, the first valve, and the second valve. The control circuitry may determine environmental conditions and detect whether an undercharge or overcharge condition is present in the refrigerant loop based at least in part on the environmental conditions and the measured parameters. The control circuitry may also instruct the first valve to open when the undercharge condition is detected to facilitate flowing refrigerant from the refrigerant tank into the refrigerant loop and instruct the second valve to open when the overcharge condition is detected to facilitate flowing refrigerant from the refrigerant loop into the refrigerant tank.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: November 17, 2020
    Assignee: Johnson Controls Technology Company
    Inventors: Aneek M. Noor, Jedidiah O. Bentz, Shaun B. Atchison, John W. Uerkvitz, Drew H. Carlton
  • Patent number: 10823476
    Abstract: An engineless transport refrigeration unit includes a compressor constructed and arranged to compress a refrigerant, and a compressor motor configured to drive the compressor and operate at a voltage range of two hundred (200) to six hundred (600) volts. A battery of the engineless transport refrigeration unit provides the power to the compressor motor.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: November 3, 2020
    Assignee: CARRIER CORPORATION
    Inventors: Robert A. Chopko, Yu H. Chen, Greg Deldicque
  • Patent number: 10775082
    Abstract: A refrigerant circuit of a refrigeration cycle apparatus has a compressor, a cooling-heating switching mechanism, a condenser, a refrigerant expansion mechanism, and an evaporator. During operation of the compressor, the refrigerant expansion mechanism opens the refrigerant circuit, a first three-way valve connects an outlet of the compressor to the condenser, and a second three-way valve connects an inlet of the compressor to the evaporator. During stop of the compressor, the refrigerant expansion mechanism closes the refrigerant circuit, the first three-way valve connects the outlet of the compressor to the evaporator, and the second three-way valve connects the inlet of the compressor to the evaporator.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: September 15, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Chitose Tanaka, Takuya Matsuda, Kosuke Tanaka
  • Patent number: 10759983
    Abstract: A composition including a lubricant based on polyol esters (POEs) or PVE and a refrigerant F including from 1 to 99% by weight of trans-1,3,3,3-tetrafluoropropene (trans-HFO-1234ze) and from 1 to 99% by weight of 1,1,1,2-tetrafluoroethane. Also, the use of the composition including a lubricant and refrigerant in refrigeration, air conditioning and heat pumps.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: September 1, 2020
    Assignee: ARKEMA FRANCE
    Inventors: Wissam Rached, Beatrice Boussand
  • Patent number: 10585208
    Abstract: A method for underground exploration using cosmic rays muons, the method comprises: detecting cosmic ray muons by sensing ionizing events that initiate within spaces of one or more gas amplification detectors of a system that is positioned within an underground space; and limiting a flow of gas within the spaces of the one or more gas amplification detectors.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: March 10, 2020
    Inventors: David Yaish, Amnon Harel, Yossi Kolkovich
  • Patent number: 10563894
    Abstract: In a refrigeration cycle apparatus, a controller is configured to, when a defrost mode is started, control a first pressure reducing device is controlled to adjust a flow rate of refrigerant to bring a degree of superheat of the refrigerant at a suction side of a compressor close to a target value, control a flow path switching device to form a first flow path through which the refrigerant released from the compressor flows to a first heat exchanger; perform a refrigerant release operation of opening one of a second pressure reducing device and a valve and closing the other of the second pressure reducing device and the valve, and perform a refrigerant collection operation of opening the second pressure reducing device and the valve, with the flow path switching device retained to form the first flow path, after the refrigerant release operation.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: February 18, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masahiro Ito, Kosuke Tanaka, Takuya Ito, Yasushi Okoshi, Kazuyuki Ishida
  • Patent number: 10527323
    Abstract: In a case where the total volume of plural indoor heat exchangers is smaller than the volume of an outdoor heat exchanger, a control component performs a heating refrigerant charging operation until a heating refrigerant charging completion condition is met, and thereafter performs a cooling refrigerant charging operation until a refrigerant charging completion condition where a refrigerant circuit is charged with a prescribed quantity of refrigerant is met.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: January 7, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Ryuuta Ohura, Junya Minami
  • Patent number: 10508846
    Abstract: When charging a refrigerant circuit with refrigerant, a control component starts a heating refrigerant charging operation that is performed by switching the refrigerant circuit to a heating cycle state and performs the heating refrigerant charging operation until a predetermined heating refrigerant charging completion condition is met. Thereafter, the control component switches to a cooling refrigerant charging operation that is performed by switching the refrigerant circuit to a cooling cycle state and performs the cooling refrigerant charging operation until a refrigerant charging completion condition where the refrigerant circuit is charged with a prescribed quantity of the refrigerant is met.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: December 17, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Ryuuta Ohura, Junya Minami
  • Patent number: 10451327
    Abstract: A refrigeration cycle device includes a charged-amount determination unit that executes a charged-amount determination to determine whether the refrigeration cycle device is in a refrigerant shortage state or not, a compressor control unit that controls a compressor, and a decompression control unit that controls a throttle opening degree of a decompression device. The charged-amount determination unit determines that the refrigeration cycle device is in the refrigerant shortage state when a heat dissipation capacity of a radiator shows a tendency to decrease in a case where the decompression control unit decreases a throttle opening degree of the decompression device while the compressor control unit operates the compressor.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: October 22, 2019
    Assignee: DENSO CORPORATION
    Inventors: Hiroaki Kawano, Takuya Tanihata
  • Patent number: 10214670
    Abstract: Compositions and methods are described for reducing flammability in a heating, ventilation, and air conditioning (HVAC) system having R32 refrigerant included in the refrigerant composition. Refrigerant compositions and methods of use are described which can be used for retrofitting, servicing, controlling flammability, improving performance, lubricant solubility and miscibility, and improving the safety of an HVAC system.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: February 26, 2019
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Stephen A. Kujak, Kenneth J. Schultz
  • Patent number: 10161647
    Abstract: Provided is an air-conditioning apparatus capable of performing a cooling and heating mixed operation, including: a heat source unit including a compressor; a plurality of indoor units; a relay unit; a first relay unit-side bypass pipe configured to cause a part of refrigerant, which is discharged from the compressor and flows into the relay unit, to flow between a heat source unit-side heat exchanger and an indoor unit-side heat exchanger; a second relay unit-side flow rate control device provided to the first relay unit-side bypass pipe; and a controller configured to control an opening degree of the second relay unit-side flow rate control device so that, in an operation in which the heat source unit-side heat exchanger functions as an evaporator, a discharge temperature of a discharge refrigerant discharged from the compressor is equal to or lower than a heat-resistant temperature of the compressor.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: December 25, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kosuke Tanaka, Osamu Morimoto, Hirofumi Koge, Tadashi Ariyama
  • Patent number: 10132541
    Abstract: An air conditioner includes a refrigerant charge port provided in an outdoor liquid-side connection valve or an outdoor gas-side connection valve, a liquid-side valve provided between the outdoor liquid-side connection valve and an expansion valve, and a gas-side valve between the indoor gas-side connection valve and a compressor. When an outdoor unit and indoor unit are separated, the liquid-side and gas-side valves are closed, and a refrigerant is charged into an outdoor connection pipe that is closed by the liquid-side valve and the gas-side valve. A control unit is adapted to close the refrigerant charge port, and then open the liquid-side valve and the gas-side valve when a pressure detector detects a predetermined degree of vacuum.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: November 20, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshikazu Kawabe, Akira Fujitaka
  • Patent number: 10132512
    Abstract: An outdoor unit is an outdoor unit to which a refrigerant pipe used to circulate refrigerant between an indoor unit and the outdoor unit, the outdoor unit including a compressor and an outdoor heat exchanger. The outdoor unit includes: a rectangular bottom panel disposed below the compressor and the outdoor heat exchanger, the rectangular bottom panel supporting the compressor and the outdoor heat exchanger; a peripheral panel disposed on a peripheral portion of the bottom panel and positioned upright on the bottom panel; a fixing panel disposed at a corner portion of the bottom panel to be located at an inner side of the peripheral panel and positioned upright on the bottom panel; and a valve which is fixed to the fixing panel and to which the refrigerant pipe is connected.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: November 20, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroyuki Jinnai, Toshiyuki Kubono, Tomoya Yanase, Hiroshi Iwazaki
  • Patent number: 10126031
    Abstract: Devices, methods, and systems for detecting refrigerant leak in a refrigeration system are described herein. One device includes a memory and a processor configured to execute executable instructions stored in the memory to detect fluctuations in a refrigerant level in a refrigerant tank of a refrigeration system, determine whether the detected fluctuations in the refrigerant level are abnormal, and determine whether a refrigerant leak is occurring in the refrigeration system based, at least in part, on whether the detected fluctuations in the refrigerant level are abnormal.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: November 13, 2018
    Assignee: Honeywell International Inc.
    Inventor: Nicholas Shockley
  • Patent number: 10006682
    Abstract: An air conditioning service system includes a discharge unit including a discharge vessel, a vacuum pump fluidly connected to the discharge vessel, a scale configured to sense a weight of the discharge unit, a first valve arranged in an input line configured to fluidly connect the discharge vessel to an air conditioning system, and a vent valve arranged in a vent line and configured to fluidly connect the discharge vessel to the atmosphere. A controller operates the vacuum pump to evacuate the discharge vessel, obtains an evacuated weight of the discharge unit, operates the first valve to open to fill the discharge vessel with refrigerant, obtains a filled weight of the discharge unit, operates the vent valve to vent refrigerant from the discharge vessel, obtains a vented weight of the discharge unit, and determines a mass of refrigerant vented based upon the stored evacuated, filled, and vented weights.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: June 26, 2018
    Assignees: Bosch Automotive Service Solutions Inc., Robert Bosch GmbH
    Inventors: Gary P. Murray, Mark W. McMasters
  • Patent number: 9902888
    Abstract: Disclosed herein is a composition comprising (a) from 1 to 29 weight percent difluoromethane; (b) from 1 to 19 weight percent pentafluoroethane; (c) from 9 to 42 weight percent 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane, or a mixture thereof; and (d) from 34 to 68 weight percent 2,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene or mixture thereof; wherein when the composition contains 2,3,3,3-tetrafluoropropene, the composition also contains at least some 1,1,2,2-tetrafluoroethane; wherein the ratio of component (a) to component (b) is at most 1.5:1; and wherein the ratio of component (c) to component (d) is at least 0.04:1. The compositions are useful in methods for producing cooling and heating, methods for producing air conditioning, methods for replacing HCFC-22, R-410A, R-407C, HFC-134a, CFC-12, HCFC-22 and HCFC-124 and in heat transfer systems including heat pumps and air conditioners.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: February 27, 2018
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Thomas Joseph Leck, Konstantinos Kontomaris, Pavanandan Kista Naicker
  • Patent number: 9732999
    Abstract: A refrigerant recovery system includes a first oil separator including a chamber configured to receive refrigerant from an air conditioning system, a heat exchanger disposed within the first oil separator, and a compressor fluidly connected to the chamber and the heat exchanger. A first valve is disposed in a first flow line that is fluidly connected between an inlet of the first oil separator and a source of refrigerant and a second valve is disposed in a second flow line that fluidly connects the compressor and the heat exchanger. A controller is configured to open the first valve to enable refrigerant to pass into the chamber of the first oil separator, open the second valve so that a flow loop for refrigerant is formed between the heat exchanger and the compressor, activate the compressor to heat the refrigerant flowing through the flow loop, and subsequently commence a refrigerant recovery operation.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: August 15, 2017
    Assignees: Bosch Automotive Service Solutions Inc., Robert Bosch GmbH
    Inventors: Dylan M. Lundberg, Mark W. McMasters, William C. Brown
  • Patent number: 9470443
    Abstract: A refrigerant recovery system includes a refrigerant storage unit, a refrigerant charge path, a flushing path, a processor, and a memory. The refrigerant storage unit is configured to store a refrigerant. The refrigerant charge path is configured to convey the refrigerant to a refrigeration system to recharge the refrigeration system with the refrigerant. The refrigerant charge path includes a first and second service coupler and a first and second service hose. The service hoses are in fluid communication with the respective service couplers. The flushing path is configured to receive a flow of refrigerant for flushing the refrigeration charge path. The flushing path includes a first and second flushing coupler. The processor is configured to control the refrigerant recovery system to provide a flow of the refrigerant from the storage unit, through the refrigerant charge path, and to the flushing path.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 18, 2016
    Assignee: Bosch Automotive Service Solutions Inc.
    Inventors: William Brown, Mark McMasters, Dylan Lundberg
  • Patent number: 9435575
    Abstract: A system and method for retrofitting a refrigeration system containing an HCFC refrigerant and a compatible lubricant, with an HFC refrigerant, comprising providing a transport container containing a mixture of a miscible lubricant and the HFC refrigerant, removing the HCFC refrigerant from the refrigeration system while maintaining at least a portion of a lubricant immiscible with the HFC refrigerant, and charging the refrigeration system with the mixture. The polyol ester lubricant may be present in a range exceeding about 5-15% by weight, e.g., 8%.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: September 6, 2016
    Assignee: Hudson Technologies, Inc.
    Inventor: Charles Harkins
  • Patent number: 9366268
    Abstract: Apparatus and methods for supporting a compression system are provided. The apparatus includes a compressor support coupled to a compressor, and a motor support coupled to a motor, the motor and the compressor being stand-alone units and having a shaft extending therebetween. The apparatus also includes a subframe connector coupled to the compressor support and the motor support and configured to prevent radial and axial misalignment of the shaft.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: June 14, 2016
    Assignee: Dresser-Rand Company
    Inventors: William C. Maier, Jose L. Gilarranz
  • Patent number: 9366488
    Abstract: An apparatus for recovering and depurating a cooling fluid having at least one passage duct of cooling fluid that extends entering or exiting the apparatus. Each passage duct has a distal end configured to be connected to a high and/or low pressure connection of high and low pressure lines of a refrigeration circuit and a proximal end connected to a coolant inlet/outlet fitting. The apparatus also includes a coolant recovery and depuration pathway, and a collection container of accumulated cooling fluid that receives depurated cooling fluid from the recovery and depuration pathway.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: June 14, 2016
    Assignee: SNAP-ON CLIMATE SOLUTIONS S.R.L.
    Inventor: Rahhali Sanhaji
  • Patent number: 9303907
    Abstract: An electric valve is provided in a supply pipe. A flow rate control unit controls the degree of opening of the electric valve such that the flow rate in the supply pipe lies within a predetermined range, on the basis of a pressure difference between pressure of refrigerant supplied to the supply pipe and the pressure of refrigerant on the suction side of a compressor. An outdoor air temperature sensor detects outdoor air temperature; and a low-pressure side pressure sensor detects refrigerant pressure on the suction side of the compressor. The pressure difference is a difference between a saturation pressure corresponding to the outdoor air temperature detected by the outdoor air temperature sensor and refrigerant pressure detected by the low-pressure side pressure sensor.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: April 5, 2016
    Assignee: Daikin Industries, Ltd.
    Inventors: Satoshi Kawano, Masahiro Oka, Kazuhiko Tani, Atsushi Okamoto
  • Patent number: 9239180
    Abstract: When an operating state indicated by a set of operation data measured during normal operation becomes a state satisfying an operation data obtaining condition, the set of operation data at the time is obtained as a set of operation data for initial learning, and an inner volume of a refrigerant extension piping is calculated based on the obtained set of operation data for initial learning. A total amount of refrigerant in a refrigerant circuit 10 is calculated based on the calculated inner volume of the refrigerant extension piping and the current set of operation data, and the calculated total refrigerant is compared with a reference amount of refrigerant to determine a presence or absence of refrigerant leakage.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: January 19, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasutaka Ochiai, Kosuke Tanaka
  • Patent number: 9207006
    Abstract: A refrigerant recovery unit for accurately filling a refrigerant system with a refrigerant is provided which includes a storage vessel for holding refrigerant, sensors to assist in determining the pressure of the refrigerant in the storage vessel, a controller to control the flow of refrigerant from the storage vessel to the refrigerant system to be serviced, and a heating device to heat the refrigerant, which is activated only if heating is required, as determined by data received by the controller.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: December 8, 2015
    Assignee: Bosch Automotive Service Solutions Inc.
    Inventors: William Brown, Mark McMasters
  • Patent number: 9146048
    Abstract: A chemical state monitoring system for a refrigeration system that continuously monitors and detects problems within a refrigeration system. The monitoring system comprises a sampling device for collecting refrigerant in a high pressure liquid line of the refrigeration system, a purge valve in an upper portion of the sampling device; a refrigerant state sensor for sensing a condition indicative of the state of refrigerant in the collection chamber; and a controller operatively connected to the refrigerant state sensor and to the purge valve for controlling said purge valve and detecting fault conditions based on signals from the sensor.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: September 29, 2015
    Inventor: Michael Shelton
  • Publication number: 20150128621
    Abstract: Systems and methods for replacing coolant of an x-ray tube assembly having a closed cooling system include a service port that is operatively connected to a portion of the x-ray tube assembly and a vacuum assisted service kit that is operatively coupled to the service port. Used coolant is drained from the x-ray tube assembly, and thereafter a vacuum is drawn on the x-ray tube assembly via the service kit. Replacement coolant within a vacuum tank of the service kit is degassed under a vacuum. The degassed replacement coolant is provided into the cooling system from the vacuum tank, preferably by pushing under pressure with an inert gas to prevent the introduction of any air into the replacement coolant. The replacement coolant may be pressurized in the cooling system with the inert gas. Thereafter, the service kit may be disconnected from the service port.
    Type: Application
    Filed: January 23, 2015
    Publication date: May 14, 2015
    Inventors: Clark Bowlsbey, Edward Q. Castle, JR.
  • Patent number: 9027357
    Abstract: An air-conditioner and the refrigerant charging method of the air-conditioner are disclosed. When a refrigerant amount determining mode is requested to be performed, whether or not the refrigerant amount in the air-conditioner is proper is automatically determined and a shortage amount of refrigerant can be charged. Thus, a user can easily check whether or not the refrigerant charged in the air-conditioner is sufficient or insufficient, and if the refrigerant is not sufficient, the user can automatically charge the refrigerant without having to entirely remove the refrigerant from the air-conditioner, thus increasing the user convenience and reducing time and costs.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: May 12, 2015
    Assignee: LG Electronics Inc.
    Inventors: Seung Yong Chang, Chang Min Choi
  • 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: 20150121911
    Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises Z-1,2-difluoroethylene (Z-HFO-1132a). The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and power cycle working fluids.
    Type: Application
    Filed: January 14, 2015
    Publication date: May 7, 2015
    Inventors: BARBARA HAVILAND MINOR, ROBERT L. WATERLAND
  • Publication number: 20150121873
    Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises E-1,2-difluoroethylene. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and power cycle working fluids.
    Type: Application
    Filed: January 14, 2015
    Publication date: May 7, 2015
    Inventors: BARBARA HAVILAND MINOR, ROBERT L. WATERLAND
  • Publication number: 20150107277
    Abstract: A portable and reusable installation platform for easing the installation or maintenance of an air conditioner on a vertical wall includes at least one support base upon which at least part of the air conditioner is positioned during the installation or maintenance thereof. At least one connector extends from the first end of the support base and is configured to releasably engage the wall. At least one support leg extends downwardly from the support base and is configured to abut the wall to support the weight of the air conditioner placed upon the support base.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 23, 2015
    Inventors: Michael A. Moore, Zheng-Yi Xu, Robert Alan Martinelli
  • Publication number: 20150089965
    Abstract: Compositions, methods and systems which comprise or utilize a multi-component mixture comprising: (a) from about 10% to about 35% by weight of HFC-32; (b) from about 10% to about 35% by weight of HFC-125; (c) from about 20% to about 50% by weight of HFO-1234ze, HFO-1234yf and combinations of these; (d) from about 15% to about 35% by weight of HFC-134a; and optionally (e) up to about 10% by weight of CF3I and up to about 5% by weight of HFCO-1233ze, with the weight percent being based on the total of the components (a)-(e) in the composition
    Type: Application
    Filed: December 5, 2014
    Publication date: April 2, 2015
    Inventors: Samuel F. Yana Motta, Mark W. Spatz, Ronald P. Vogl, Elizabet del Carmen Vera Becerra
  • Publication number: 20150075165
    Abstract: The invention provides a heat transfer composition comprising (i) from about 45 to about 75% by weight 2,3,3,3-tetrafluoropropene (R-1234yf); and (ii) from about 25 to about 55% by weight 1,1,1,2-tetrafluoroethane (R-134a). A heat transfer composition comprising, optionally consisting essentially of, (i) from about 20 to about 90% by weight R-1234yf; (ii) from about 10 to about 60% by weight R-134a; and (iii) from about 1 to about 20% by weight R-32 is also provided.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Applicant: Mexichem Amanco Holding S.A. de C.V.
    Inventor: Robert E. Low
  • Publication number: 20150075210
    Abstract: A method for charging and discharging a heat accumulator is provided. A system by which the method can be performed is also provided. By means of the heat accumulator, it is possible to convert overcapacities of wind turbines, for example, into a charging circuit as heat in the accumulator by a compressor. If necessary, electricity can be stored into the network by a turbine and a generator, wherein the heat accumulator is discharged. The charging circuit and the discharging circuit are operated by a Rankine cycle, wherein for example river water is available as a reservoir for heat exchangers in order to cause evaporation of the working medium in the charging circuit and condensation of the working medium in the discharging circuit.
    Type: Application
    Filed: March 28, 2013
    Publication date: March 19, 2015
    Applicant: Siemens Aktiengesellschaft
    Inventors: Daniel Reznik, Henrik Stiesdal
  • Patent number: 8978393
    Abstract: An outdoor unit of air conditioner for ensuring strength against an impact applied to an electrical component box in a front-back, left-right, or top-bottom direction. The electrical component box has an upper partition plate, a front plate, and a box base plate coupled to one another and supported by an arm and a support post. The arm substantially perpendicularly supports the front plate in a front-back direction, and the upper partition plate. Thus, the electrical component box is strong enough to withstand an impact in the front-back and the left-right directions. Further, the support post substantially perpendicularly supports the arm and the box base plate in a top-bottom direction allowing the electrical component box to withstand an impact in the top-bottom direction. Also material of the electrical component box can be reduced.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: March 17, 2015
    Assignee: Fujitsu General Limited
    Inventors: Yasushi Hika, Yoshinori Hiramatsu, Mitsuo Ueda, Yasumasa Tsuji
  • Patent number: 8978394
    Abstract: A convertible refrigerant recovery, recycle, and recharge unit, comprising a control valve array, a vacuum pump, an oil separator, an oil-less compressor, and one or more storage tanks. The vacuum pump and the oil separator are in flow communication with the control valve array, the oil-less compressor is in flow communication with the oil separator, and the storage tanks are in flow communication with said oil-less compressor. The control valve array receives refrigerant from a refrigerant containing device wherein the oil-less compressor draws the refrigerant into said the storage tanks. The unit is compatible with a plurality of refrigerant types without cross-contamination of the refrigerant due to the oil-less compressor and conversion cycle whereby the vacuum pump is activated to remove residual refrigerant from the unit. A refrigerant identifier sensor is in flow communication with the system and can detect contaminants and selectively open and close the storage tanks.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: March 17, 2015
    Assignee: CPS Products, Inc.
    Inventors: Richard Koldewey, Jose Sacerio, Juan Saluzzio
  • Publication number: 20150068225
    Abstract: A branch controller operates with a system for temperature and humidity control. The branch controller includes a fluid control system for controlling a flow of the liquid desiccant in an arrangement of channels forming a first path for exchanging the liquid desiccant between a liquid desiccant conditioning unit and at least a first space conditioning unit and a second path for directing the liquid desiccant received from the first space conditioning unit to a second space conditioning unit. The branch controller includes a processor for comparing operational conditions of the first space conditioning unit and the second space conditioning unit. The processor selects between the first path and the second path based on the comparison and commands the fluid control system to control the flow of the liquid desiccant according to the selected path.
    Type: Application
    Filed: September 10, 2013
    Publication date: March 12, 2015
    Applicant: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Christopher Laughman, Daniel J. Burns, Scott A. Bortoff, Richard C. Waters
  • Publication number: 20150059367
    Abstract: Vapor compression systems are supplemented with a charge control loop that includes a discharge control valve, a transfer pump, and a mass storage vessel configured to add or remove refrigerant to or from the refrigeration loop during operation to optimize efficiency according to variations in thermal load. Methods for operating the vapor control systems include adjusting the refrigerant charge in the refrigeration loop by activating the discharge control valve to remove refrigerant or by activating the transfer pump to add refrigerant, thereby maintaining optimal pressure and temperature conditions in the refrigeration loop over large variations in environmental temperatures. Refrigerant removed from the refrigeration loop through the discharge control valve may be held in the mass storage vessel until subsequently being added back into the refrigeration loop by the transfer pump.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 5, 2015
    Inventors: Stephen M. Emo, Victor Tsao
  • Patent number: 8955342
    Abstract: A method of operating a filling system, which is configured for transferring a refrigerant to a refrigeration system and comprises a receiver for collecting a refrigerant-air-mixture, comprises the steps of determining the saturation pressure of the refrigerant at the actual environmental conditions; determining the air pressure of the refrigerant-air-mixture within the receiver; and stopping the operation of the filling system and/or issuing an alarm if the air pressure of the refrigerant-air-mixture within the receiver exceeds the saturation pressure of the refrigerant by more than a predetermined margin or if the change of the air pressure within the refrigerant-air-mixture within the receiver over time exceeds a predetermined margin.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: February 17, 2015
    Assignee: Mahle Clevite Inc.
    Inventor: Louis Cording
  • Patent number: 8955341
    Abstract: In a method for servicing an air conditioning system of a motor vehicle, surrounding areas in which there is a risk of leakage of inflammable coolant is ventilated such that air in the surrounding areas is suctioned out and discharged from the surrounding areas.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: February 17, 2015
    Assignee: Mahle Clevite Inc.
    Inventors: Louis Cording, Bjarne Lund
  • Publication number: 20150040588
    Abstract: Servicing devices and methods of use for servicing refrigerant systems are described herein. A servicing device may include a body and actuator. The body includes a first fluid port that is coupleable to a fluid port of a fluid source; a second fluid port, that is operatively couples to a refrigeration system; a passage in fluid communication with the first and second fluid ports and in fluid communication; and a plunger at least partially disposed in the passage of the body, and the plunger is adjustable between a released position and an engaged position, during use. The actuator is coupled to the body, and, during use, downward movement the actuator raises or lowers a plunger such that substantially continuous fluid communication between the first fluid port and the second fluid port is established.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 12, 2015
    Inventors: Vincent CARRUBBA, Kenneth Alan PISTONE
  • Patent number: 8950198
    Abstract: A method of filling refrigerant into a refrigeration system by means of a filling system comprising a tank includes the step of pressurizing the tank by means of a conditioning process to a predetermined differential pressure above the saturation pressure of the actual ambient temperature before the refrigerant is filled into the refrigeration system.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: February 10, 2015
    Assignee: Mahle International GmbH
    Inventor: Louis Cording
  • Publication number: 20150033770
    Abstract: A nonflammable 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: Application
    Filed: February 12, 2013
    Publication date: February 5, 2015
    Inventor: Barbara Haviland Minor
  • Patent number: 8940180
    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: Grant
    Filed: March 12, 2013
    Date of Patent: January 27, 2015
    Assignee: Honeywell International Inc.
    Inventors: Samuel F. Yana Motta, Mark W. Spatz, Elizabet Del Carmen Vera Becerra, Ankit Sethi, Thomas Morris
  • Patent number: 8935931
    Abstract: This invention belongs to the area of heat pump/refrigeration technology, which provides absorption heat pump of multiterminal heating and the ways of additional adjacent high-temperature heating-side. Refrigerating fluid flows from a generator to a new absorber, and then into a new absorption-evaporator, and finally into the generator. Refrigerating fluid flows from the generator to the new absorption-evaporator, and then into the new absorber, the generator. Refrigerant vapor in the condenser flows through a new throttle, and then into the new absorption-evaporator and the new absorber. Refrigerant vapor in the evaporator flows through the new liquid refrigerant pump, and then into the new absorption-evaporator and the new absorber. The pipeline of heated medium in the new absorber is connected with the external. The invention can form new units of simple structure and high heating temperature, and reduce the temperature requirement of cooling medium or actuated-hot when it is used to refrigeration type.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: January 20, 2015
    Inventor: Huayu Li
  • Publication number: 20150007591
    Abstract: A method is provided for detecting in real-time a refrigerant charge loss in a refrigerant vapor compression system. If both a sensed evaporator outlet superheat exceeds a target evaporator outlet superheat by at least a preset amount of superheat and a sensed degree of openness of an electronic expansion valve exceeds a preset degree of openness for a preset time of period, and a sensed air temperature of either a flow of supply air having traversed the evaporator or a flow of return air returning to the evaporator is changing at a rate less than preset air temperature rate of change, a service alarm is generated indicating a loss of charge warning.
    Type: Application
    Filed: February 4, 2013
    Publication date: January 8, 2015
    Inventors: Lucy Yi Liu, Jian Sun
  • Publication number: 20150007592
    Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises 2,3,3,3-tetrafluoropropene (HFC-1234yf) and at least one hydrocarbon. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, and aerosol propellants.
    Type: Application
    Filed: September 23, 2014
    Publication date: January 8, 2015
    Inventors: BARBARA HAVILAND MINOR, THOMAS JOSEPH LECK, DONALD BERNARD BIVENS, AKIMICHI YOKOZEKI
  • Publication number: 20140373559
    Abstract: A method for detecting whether a different refrigerant has been charged into a refrigeration apparatus including a refrigerant circuit includes: a charging step of charging a refrigerant into the refrigerant circuit; a characteristics determination step of determining whether saturation temperature characteristics of the refrigerant charged in the charging step are identical to saturation temperature characteristics of a previously determined normal refrigerant, the saturation temperature characteristics of the refrigerant being derived from a pressure and a temperature of the refrigerant; and an alerting step of, when, in the characteristics determination step, a determination is made that the saturation temperature characteristics of the charged refrigerant are different from those of the normal refrigerant, issuing an alarm indicating that the charged refrigerant is different from the normal refrigerant.
    Type: Application
    Filed: December 25, 2012
    Publication date: December 25, 2014
    Inventors: Makoto Ikemiya, Hisaaki Takaoka, Kazuhide Mizutani, Akitoshi Ueno
  • Publication number: 20140360209
    Abstract: The present technology relates to compositional blends that can be used as refrigerants, and more specifically to blends of vinylidene fluoride and at least one other component for use in very low temperature applications. In at least some examples, the second component can be selected from the group consisting of carbon dioxide and pentafluoroethane. Further, the compositions can be azeotropic or azeotrope-like.
    Type: Application
    Filed: August 27, 2014
    Publication date: December 11, 2014
    Inventors: Rajiv Ratna Singh, Ryan Hulse