Withdrawing Or Adding Refrigerant From Or To Normally Closed System Patents (Class 62/149)
  • Patent number: 11326804
    Abstract: An air-conditioning system includes a plurality of indoor units; a relay unit including an intermediate heat exchanger configured to exchange heat between refrigerant and a heat medium; and a heat source unit configured to supply cooling energy or heating energy to each of the plurality of indoor units via the relay unit. The heat source unit and the relay unit are connected by a heat-source connection pipe through which the refrigerant flows, and the relay unit and the plurality of indoor units are connected by a load connection pipe through which the heat medium flows. The load connection pipe comprises a main pipe connecting between the relay unit and one of the indoor units provided at an end of the load connection pipe opposite to the relay unit. The main pipe has branch parts associated with the indoor units.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: May 10, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naofumi Takenaka, Hiroki Washiyama, Yuji Motomura, Kimitaka Kadowaki
  • Patent number: 11280529
    Abstract: Embodiments relate generally to subcooling control of a heating, ventilation, and air conditioning (HVAC) system. An HVAC system may include a compressor, a first heat exchanger, a refrigerant vessel having an inlet fluidly coupled to a discharge conduit extending from the compressor, and the refrigerant vessel having an outlet fluidly coupled to a liquid conduit, the liquid conduit configured to pass liquid refrigerant between the first heat exchanger and a second heat exchanger. The HVAC system may further include an electronic expansion valve (EEV) fluidly coupled between the discharge conduit and the inlet of the refrigerant vessel, wherein the EEV is configured to modulate and divert a portion of vapor refrigerant flowing through the discharge conduit into the refrigerant vessel to control subcooling (SC) produced by the HVAC system.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: March 22, 2022
    Assignee: Trane International Inc.
    Inventor: Jose Luis Balderrama
  • Patent number: 11262096
    Abstract: A compliant containment device for use in a hydronic system, the compliant containment device including a vessel including an inlet and an outlet, and valve operably coupled to at least one of the inlet and outlet, wherein the valve is configured to operate between an open and closed position based in part on a temperature.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: March 1, 2022
    Assignee: CARRIER CORPORATION
    Inventor: Gregory Terraz
  • Patent number: 11204188
    Abstract: An air-conditioning device including multiple outdoor units and an indoor unit through a pipe includes a control section that obtains a degree of subcooling at an outlet of a subcooling circuit of each outdoor unit based on a temperature detected by a temperature sensor that detects the temperature of refrigerant having passed through the subcooling circuit of each outdoor unit, obtain a target value of the degree of subcooling based on the obtained multiple degrees of subcooling, and perform the control of increasing the rotation speed of a compressor of an outdoor unit having a higher degree of subcooling than the target value and decreasing the rotation speed of a compressor of an outdoor unit having a lower degree of subcooling than the target value such that a difference in the degree of subcooling at the outlet of the subcooling circuit of each outdoor unit is decreased.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: December 21, 2021
    Assignee: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.
    Inventors: Hiroaki Kaneko, Shoutaro Yamamoto
  • Patent number: 11199337
    Abstract: An air conditioner that includes a refrigerant circuit connecting a plurality of indoor heat exchangers in parallel and is able to complete collection of refrigerant to the side of an outdoor heat exchanger in a shorter time when the refrigerant has leaked at any indoor heat exchanger is provided. Thus, in the air conditioner according to the present invention, when refrigerant leak is detected by a refrigerant leak sensor provided in an indoor unit and refrigerant leak is not detected by a refrigerant leak sensor provided in an indoor unit, an indoor LEV and a cutoff valve are closed to isolate an indoor heat exchanger of the indoor unit from the refrigerant circuit in a refrigerant pump-down operation. When refrigerant leak is detected by the refrigerant leak sensor and refrigerant leak is not detected by the refrigerant leak sensor, an indoor LEV and a cutoff valve are closed.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: December 14, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsuru Kawashima, Katsuhiro Ishimura
  • Patent number: 11162720
    Abstract: A method of converting a refrigerant includes recovering a refrigerant from a refrigeration unit with an evacuation pump and containing the recovered refrigerant in a container. The method also includes testing the recovered refrigerant and converting the recovered refrigerant. The converted refrigerant is different from the recovered refrigerant. A system for converting a refrigerant includes an evacuation pump, a container, and one or more refrigerant containers. The evacuation pump and container are configured to recover a refrigerant from a refrigeration unit. The one or more containers deliver one or more refrigerant components into the container to convert the recovered refrigerant.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: November 2, 2021
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Dermott Crombie, Stephen A. Kujak
  • Patent number: 11131489
    Abstract: A refrigerant recovery apparatus is connected between a target apparatus from which a refrigerant is recovered and a refrigerant recovery container. The apparatus includes a compressor, a condenser, and a residual refrigerant recovery path. The compressor sucks the refrigerant from a refrigerant circuit of the target apparatus and compresses the refrigerant. The condenser condenses the refrigerant discharged from the compressor and sends the refrigerant to the refrigerant recovery container through a main refrigerant recovery path. The residual refrigerant recovery path through which a decompression mechanism on a branch path branching from the main refrigerant recovery path decompresses a residual refrigerant in the condenser. The decompressed refrigerant is sucked into the compressor and pressurized. The pressurized refrigerant is sent into the refrigerant recovery container.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: September 28, 2021
    Assignee: Daikin Industries, Ltd.
    Inventor: Nobuo Domyo
  • Patent number: 11125481
    Abstract: An HVAC system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil. A condenser coil is fluidly coupled to the compressor. The condenser coil includes at least one condenser circuit fluidly coupled between a discharge line and an exit manifold. A sub-cool circuit is fluidly coupled between the exit manifold and a liquid line. A first temperature sensor is disposed at an entrance to the sub-cool circuit. A second temperature sensor is disposed at an exit to the sub-cool circuit. An HVAC controller is operatively coupled to the first temperature sensor and the second temperature sensor. The HVAC controller is configured to determine a temperature difference across the sub-cool circuit.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: September 21, 2021
    Assignee: Lennox Industries Inc.
    Inventors: Rakesh Goel, Siddarth Rajan, Patrie Ananda Balan
  • Patent number: 11085677
    Abstract: A refrigerant recovery system is equipped with an extraction pipe, a stabilizer holding container, a recovery pipe, a recovery container, and a recovery device. The extraction pipe is connectable to a refrigerant extraction port of an air conditioning apparatus. The stabilizer holding container is connected to the extraction pipeā€”and holds a stabilizer. The stabilizer holding container causes refrigerant guided by the extraction pipe to come into contact with the stabilizer. The recovery pipe guides the refrigerant discharged from the stabilizer holding container. The recovery container is connected to the recovery pipe and recovers the refrigerant guided by the recovery pipe. The recovery device causes the refrigerant to move from the refrigerant extraction port to the recovery container. The refrigerant includes a compound represented by a molecular formula having one or more carbon-carbon unsaturated bonds.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: August 10, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Masaru Tanaka, Shigeharu Taira, Tomoyuki Haikawa, Yoshiki Shimizu
  • Patent number: 11073308
    Abstract: In a cryocooler for developing coldness of 4 K or lower by expanding helium, an expander expands high-pressure helium. A compressor compresses low-pressure helium returned from the expander, to generate high-pressure helium, and supplies the high-pressure helium to the expander. When helium temperature in the expander is 2.17 K or lower, the pressure of the low-pressure helium is equal to or higher than pressure given by a curve, in a helium state diagram in which the horizontal axis is temperature and the vertical axis is pressure, along which helium's volumetric thermal expansion coefficient is 0.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: July 27, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: A. T. A. M de Waele, Mingyao Xu, Qian Bao
  • Patent number: 11047590
    Abstract: An air conditioner, in which a liquid-pressure adjustment expansion valve that decompresses a refrigerant so that the refrigerant flowing through a liquid-refrigerant connection pipe is in a gas-liquid two-phase state is provided in an outdoor liquid-refrigerant pipe that connects a liquid-side end of an outdoor heat exchanger to the liquid-refrigerant connection pipe, properly transports the refrigerant in a two-phase state while suppressing an increase in a discharge temperature of a compressor. A liquid injection pipe that branches part of a refrigerant flowing through an outdoor liquid-refrigerant pipe and feeds the branched refrigerant to a compressor is connected to a portion of the outdoor liquid-refrigerant pipe on a side of an outdoor heat exchanger with respect to a liquid-pressure adjustment expansion valve.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: June 29, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takuro Yamada, Yuusuke Nakagawa, Masahiro Honda, Yuusuke Oka
  • Patent number: 10871317
    Abstract: The disclosure relates to apparatuses and methods for indicating status of multi-phase vacuum-assisted recovery of refrigerant from a vehicle. One apparatus for multi-phase vacuum-assisted recovery of refrigerant from a vehicle includes a compressor that removes refrigerant from the vehicle during a first phase and a second phase of a recovery process. The apparatus also includes a vacuum pump to assist the compressor in the removal of refrigerant from the vehicle during a second stage of the recovery process. Further, the vacuum pump is fluidly connected in series with the compressor during the second phase of the recovery process. The apparatus additionally includes one or more status lights and at least one processor to determine a status of the recovery process. At least one of the status lights is illuminated to represent a status of the recovery process, and at least one is visible from 360 degrees around the apparatus.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: December 22, 2020
    Assignee: Snap-on Incorporated
    Inventors: Craig Govekar, Rahhali Sanhaji
  • Patent number: 10837684
    Abstract: An automated refrigerant recharging system determines whether a cooling load parameter of a direct expansion (DX) cooling system that cools information technology (IT) modules of an information handling system (IHS) has reached a defined recharging threshold that results in a response of the pressure value for measurement by the pressure transducer. In response to the cooling load parameter being equal to or greater than the defined recharging threshold, a controller determines whether a pressure value of the refrigerant of the DX cooling system is less than a defined target pressure value corresponding to the defined recharging threshold. In response to determining that the pressure value of the refrigerant of the DX cooling system is less than the defined target pressure value, the controller autonomously opens a control valve to transfer refrigerant to the DX cooling system.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: November 17, 2020
    Assignee: Dell Products, L.P.
    Inventors: Michael M. Toulouse, Tyler B. Duncan, Trey S. Wiederhold
  • Patent number: 10830515
    Abstract: A vapor compression system includes a heat transfer system including an arrangement of components moving a refrigerant through a vapor compression cycle to condition a controlled environment and a refrigerant management system including at least one expansion device regulating an amount of the refrigerant in the vapor compression cycle. The vapor compression system also includes a controller including a processor jointly controlling the expansion device and at least one component of the heat transfer system according to a metric of performance of the vapor compression system.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: November 10, 2020
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Christopher Reed Laughman, Hongtao Qiao, Daniel J Burns, Scott A Bortoff
  • Patent number: 10808974
    Abstract: A dual tank refrigerant delivery apparatus including a refrigerant tank housing a first storage tank, a second storage tank, and a refrigerant delivery system positioned therein, the refrigerant delivery system adapted to supply a first refrigerant to the first storage tank and a second refrigerant to the second storage tank, a tank recess on the housing for receiving a refrigerant resupply tank, a first refrigerant hose for connecting to a first refrigerant resupply tank, a second refrigerant hose for connecting to a second refrigerant resupply tank, wherein the first refrigerant is supplied from the first refrigerant resupply tank through the first refrigerant hose and refrigerant delivery system to the first storage tank, and wherein the second refrigerant is supplied from the second refrigerant resupply tank through the second refrigerant hose and refrigerant delivery system to the second storage tank.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: October 20, 2020
    Assignee: Snap-on Incorporated
    Inventors: Craig F. Govekar, Rahhali Sanhaji, Paolo Pennacchia, Massimo Corposanto
  • Patent number: 10807438
    Abstract: An air condition service machine for charging an air conditioner with refrigerant in a fast-charge mode, the fast-charge mode controlled based upon the changing weight rate of a refrigerant tank providing the supply of refrigerant to the air conditioner. The embodiment may also include a compensation mode to provide greater accuracy of the charge after completion of the fast-charge mode. The rate of refrigerant flow is monitored and an end time as opposed to weight target ends the charge.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: October 20, 2020
    Assignees: Bosch Automotive Service Solutions Inc., Robert Bosch GmbH
    Inventor: Mahendra Hs
  • Patent number: 10794621
    Abstract: An air conditioner and a method of controlling an air conditioner are provided.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: October 6, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Changmin Choi, Taekyu Ha, Sunghwan Kim
  • Patent number: 10775084
    Abstract: A charge-verification tool is used with a charge-verification system to diagnose and remedy a charge condition. The charge-verification tool includes a device having a controller configured to communicate with a system controller in the charge-verification system and a display configured to display measurements and instructions to an installer. The device is a user interface and is configured to provide communication between the installer and the system controller in the charge-verification system. The controller prompts the installer to input charge-verification system information including refrigeration line length and diameter. The controller receives a subcooling temperature calculated by the system controller and determines whether the subcooling temperature is between a threshold and a target subcooling temperature.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: September 15, 2020
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Hung M. Pham
  • Patent number: 10767912
    Abstract: A refrigeration cycle apparatus is provided with a refrigerant circuit, a refrigerant tank circuit, and a degassing pipe. The refrigerant circuit is configured by connecting a compressor, a flow path switching apparatus, a first heat exchanger, a decompressing apparatus, and a second heat exchanger. The refrigerant tank circuit is connected to the first and second heat exchangers in parallel with the decompressing apparatus. The degassing pipe has a first end and a second end. The flow path switching apparatus is configured to switch a flow of refrigerant discharged from the compressor to any of the first and second heat exchangers. The refrigerant tank circuit contains a refrigerant tank. The degassing pipe has the first end connected to the refrigerant tank and has the second end connected to at least any of the refrigerant circuit and the refrigerant tank circuit.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: September 8, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masahiro Ito, Takuya Ito, Yasushi Okoshi, Kazuyuki Ishida
  • Patent number: 10760828
    Abstract: A chiller plant is disclosed. The chiller plant includes a chiller circuit including a chiller, a first process fluid circuit, and a first heat exchanger. The chiller is configured to provide a first process fluid at a first temperature. The chiller plant also includes an air handling circuit including a plurality of ice storage tanks and an air handling unit. The chiller plant further includes a terminal cooling circuit including a plurality of terminals, the terminal cooling circuit providing a second process fluid to the plurality of terminals at a second temperature that is different from the first temperature. The terminal cooling circuit is fluidly separate from, but thermally communicates with, the chiller circuit via the first heat exchanger.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: September 1, 2020
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: John Arthur Murphy, Susanna S. Hanson, Kevin P. Bradley, Anthony Wayne Bruno
  • Patent number: 10760807
    Abstract: An air conditioner according to the present invention has a structure driving a compressor and a pump, simultaneously, in a low-temperature cooling environment in which the outdoor temperature is lower than the indoor temperature.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: September 1, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Hee Jang, Hyung Mo Koo, Byoung Guk Lim, Il Yong Cho
  • Patent number: 10627142
    Abstract: An air conditioning service unit and method of using same provide increased accuracy in determining respective amounts of refrigerant and oil recovered during service of an air conditioning system by taking into account the quantity of dissolved refrigerant in oil recovered from the system.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: April 21, 2020
    Assignees: Bosch Automotive Service Solutions Inc., Robert Bosch GmbH
    Inventors: William Brown, Mark McMasters, Mahendra Hospet Basavapura Srinivasa
  • Patent number: 10571176
    Abstract: Disclosed herein are an air conditioner and a method for controlling the same. The air conditioner includes an indoor temperature measuring unit that measures an indoor air temperature, an outdoor temperature measuring unit that measures an outdoor air temperature, a heat exchanger temperature measuring unit that measures an inlet temperature of one or more indoor heat exchangers and an outlet temperature thereof, and a processor that determines a reference superheat degree using the indoor air temperature and the outdoor air temperature, obtains a difference between the inlet temperature and the outlet temperature of the one or more indoor heat exchangers, compares the difference between the inlet temperature and the outlet temperature of the one or more indoor heat exchangers and the reference superheat degree, and determines whether a circulation amount of a refrigerant is normal according to a result of the comparison.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: February 25, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-Sik Han, Jeong Uk Park, Jong Woon Kim, Tae Woo Kim, Hyun Jin Bae
  • Patent number: 10488090
    Abstract: A diagnostic system for a refrigeration system including a condenser is provided. The diagnostic system may include a controller determining a subcooling temperature of the refrigeration system, an approach temperature of the condenser, and a condenser temperature difference of the condenser. The controller may determine at least one of a fault condition of the refrigeration system and a charge of the refrigeration system based on the subcooling temperature, the approach temperature, and the condenser temperature difference.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: November 26, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Hung M. Pham
  • Patent number: 10473371
    Abstract: A method for charging a field refrigeration system including an evaporator, a condenser, a compressor, and an expansion device includes calculating a target superheat as a function of one or more of a measured field outdoor dry bulb temperature, and a measured field indoor wet bulb temperature. A charge adjustment percentage can be calculated as a function of the target superheat. A refrigerant adjustment weight can be determined based on the charge adjustment percentage. A field refrigeration system charge can be adjusted by the refrigerant adjustment weight.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: November 12, 2019
    Assignee: Nortek Global HVAC, LLC
    Inventors: Jie Chen, Jan Pottinger
  • Patent number: 10473372
    Abstract: A method for charging a field refrigeration system including an evaporator, a condenser, a compressor, and an expansion device includes calculating a field subcooling of the field refrigeration system as a function of a measured field liquid line pressure and a measured field liquid line temperature. A charge adjustment percentage can be calculated as a function of the field subcooling, a measured field indoor wet bulb temperature, and a measured field outdoor dry bulb temperature. A refrigerant adjustment weight can be determined based on the charge adjustment percentage. A field refrigeration system charge can be adjusted by the refrigerant adjustment weight.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: November 12, 2019
    Assignee: Nortek Global HVAC, LLC
    Inventors: Jie Chen, Jan Pottinger
  • Patent number: 10443863
    Abstract: A heat-pump circuit may include an indoor heat exchanger, an outdoor heat exchanger, a compressor adapted to circulate a working fluid between the indoor and outdoor heat exchangers, and an expansion device disposed between the indoor and outdoor heat exchangers. A monitor for the heat-pump system may include a return-air temperature sensor, a supply-air temperature sensor, and a processor. The return-air temperature sensor may be adapted to measure a first air temperature of air upstream of the indoor heat exchanger. The supply-air temperature sensor may be adapted to measure a second air temperature of air downstream of the indoor heat exchanger. The processor may be in communication with the return-air temperature sensor and the supply-air temperature sensor. The processor may be programmed to determine a working-fluid-charge condition of the heat-pump system based on the first and second air temperatures.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: October 15, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Fadi M. Alsaleem, Gregg M. Hemmelgarn
  • Patent number: 10422544
    Abstract: An information notification method for use in an information notification system connected to an air conditioner including a refrigerant circuit and an information communication apparatus includes detecting a connection state indicating whether the air conditioner is connected to a network, determining whether the air conditioner performed a refrigerant recovery operation on the refrigerant circuit on the basis of the operation log information that indicates an operation log of the air conditioner and that is received from the air conditioner, determining whether the air conditioner has been relocated on the basis of the detected connection state and the determination as to whether the air conditioner performed the refrigerant recovery operation, and sending, to the information communication apparatus, first information used to prompt for a test operation of the air conditioner if it is determined that the air conditioner has been relocated.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: September 24, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Chieko Sasaki, Yuji Osaki, Hiroko Sugimoto
  • Patent number: 10391839
    Abstract: A refrigeration cycle device includes a pre-evaporator decompression unit that decompresses refrigerant which flowed out from an exterior heat exchanger, and an evaporator passage that guides the refrigerant which flowed out from the exterior heat exchanger to a suction port of a compressor while passing through a pre-evaporator decompression unit and an evaporator. Further, the refrigeration cycle device includes a bypass passage that guides the refrigerant which flowed out from the exterior heat exchanger to the suction port of the compressor while bypassing the pre-evaporator decompression unit and the evaporator, a pre-exterior device switching unit, and a passage switching unit that opens and closes the bypass passage. Further, the pre-exterior device switching unit and the passage switching unit form a coupled valve where the pre-exterior device switching unit and the passage switching unit are mechanically coupled.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: August 27, 2019
    Assignee: DENSO CORPORATION
    Inventors: Masaaki Kawakubo, Tetsuya Itou, Satoshi Itoh
  • Patent number: 10371396
    Abstract: Disclosed is an air conditioner heat-radiating circulation system, comprising a compressor (1). A discharge pipe of the compressor (1) is connected to a four-way reversing valve (2), which is connected to an outdoor heat exchanger (4) that is connected to an indoor heat exchanger (10) via an electronic expansion valve (11), the indoor heat exchanger (10) is connected to a stop value (3) that is connected to a gas suction pipe of the compressor (1) via the four-way reversing valve (2), the gas suction pipe is provided with a refrigerating circulation branch, which includes a branch electromagnetic valve (5) that is connected to a flat tube micro-channel aluminum-based radiator (6) with a temperature sensor (8); the gas suction pipe is further provided with a gas suction electromagnetic valve (7) that is connected in parallel to the branch electromagnetic valve (5).
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: August 6, 2019
    Assignee: QINGDAO HISENSE HITACHI AIR-CONDITIONING SYSTEMS CO., LTD.
    Inventors: Wugong Chi, Rui Cao, Wenqiang Zhang, Yajun Li, Chengjun He, Wentao Lin, Leilei Ge
  • Patent number: 10371144
    Abstract: There is provided a linear motor that can detect the displacement of a moving member or the inclination of the moving member in a direction in which two windings are opposed to each other and equipment equipped with the linear motor. A linear motor includes: a first armature having an upper winding and a lower winding opposed to the upper winding through a gap in a vertical direction; a moving member having a permanent magnet and enabled to reciprocate in a longitudinal direction with respect to the first armature; and a current detecting unit that detects an electric current carried through the first armature. The upper winding and the lower winding are in parallel connection.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: August 6, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Eri Maruyama, Yasuaki Aoyama, Takahiro Suzuki
  • Patent number: 10352197
    Abstract: The invention relates to a method for detecting a leak in a thermodynamic cycle device with a condenser for condensing vaporous working medium, comprising the following steps: determining sub-cooling of the working medium in the condenser, wherein sub-cooling is determined as a difference between a condensation temperature in the condenser and a temperature of a liquid working medium exiting the condenser; detecting a leak in the event that the sub-cooling determined differs from a setpoint value for the sub-cooling or in the event that a filling quantity of the working medium in the thermodynamic cycle device, being determined from the determined sub-cooling, differs from a setpoint value for the filling quantity. The invention further relates to a corresponding computer program product and to a corresponding device.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: July 16, 2019
    Assignee: ORCAN ENERGY AG
    Inventors: Andreas Grill, Jens-Patrick Springer, Richard Aumann, Roy Langer, Daniela Walter, Andreas Schuster
  • Patent number: 10293662
    Abstract: A vehicle has a drive motor and a refrigerant circuit. The refrigerant circuit includes, when viewed in the direction of flow of the refrigerant, a compressor, a gas cooler or condenser, an expansion device and an evaporator. The refrigerant circuit has a first shut-off element which is arranged outside of an area arranged between the drive motor and the evaporator.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: May 21, 2019
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Stefan Morgenstern, Robert Herbolzheimer
  • Patent number: 10275368
    Abstract: A terminal device includes an operating system that does not allow a user to have right to incorporate a device driver in the operating system, a processor, and a memory that is capable of storing therein the operating system in which a first device driver is preliminarily incorporated and an application, wherein the application includes a second device driver that converts a first control command provided by the application into a second control command in a form deliverable to an external peripheral device, and the first device driver transmits the second control command output from the second device driver to the external peripheral device.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: April 30, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Hidenobu Ito, Kazuaki Nimura
  • Patent number: 10190808
    Abstract: Refrigeration systems with a purge for removing non-condensables from the refrigerant and an acid filter for remove acid from the refrigerant are provided. The acid filter can be operatively connected to the purge. Optionally, the purge can include a separating device for separating non-condensable gases from condensable refrigerant gases and an acid filter is provided to remove acid from the condensable refrigerant gases.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 29, 2019
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Daoud Ali Jandal, Julie Ann Majurin, Stephen Anthony Kujak, Raymond Scott Schafer, Paul Edmond Cieslinski
  • Patent number: 10173492
    Abstract: A dispensing canister apparatus for controlled release of a stored fluid includes first and second thermochromic clips for providing a visual indication of the ambient air temperature; a hose member surrounding a channel and having first and second open ends, and the first open end being connected to the canister such that the channel is in fluid flow communication with the inner cavity; a control on the canister for selectively actuating the flow of the stored fluid from the inner cavity into the channel and through a coupler member at the second open end of the hose member; and wherein storage of the first thermochromic clip in the first receptacle positions the fastening member such that it obstructs movement of the control for actuating the flow of the stored fluid.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: January 8, 2019
    Assignee: TSI Products, Inc.
    Inventor: Michael E. Quest
  • Patent number: 10158359
    Abstract: Embodiments relate to integrated magnetic field sensor-controlled switch devices, such as transistors, current sources, and power switches, among others. In an embodiment, a magnetic switch and a load switch are integrated in a single integrated circuit device. In embodiments, the magnetic switch is configured to sense a dynamic change in magnetic field caused by movement of a magnet in at least one of a linear, three-dimensional, and rotational direction.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: December 18, 2018
    Assignee: Infineon Technologies AG
    Inventors: Sebastian Maerz, Franz Jost, Udo Ausserlechner, Jean-Marie Le Gall
  • Patent number: 10126029
    Abstract: A method for controlling an electronic expansion valve of a variable refrigerant flow air conditioning system includes steps as follows: when operating in a primary heating mode, obtaining a degree of superheat of return air of a compressor, and performing a control on an opening degree of the first electronic expansion valve according to the degree of superheat; judging the degree of superheat and the opening degree of each refrigerating indoor machine in the plurality of indoor machines; and if the degree of superheat is greater than a first preset degree of superheat and an opening degree in any refrigerating indoor machine reaches a maximum opening degree, obtaining a target medium pressure value by calculating a refrigerant volume of the refrigerating indoor machine reaching the maximum opening degree, and performing a medium pressure control on the first electronic expansion valve according to the target medium pressure value.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: November 13, 2018
    Assignees: GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD., MIDEA GROUP CO., LTD.
    Inventors: Bin Luo, Kun Yang
  • Patent number: 10119756
    Abstract: A method and backup system for backing up a supply oxygen in an air separation plant in which during normal operation, a stream of oxygen-rich liquid is pumped through a main flow path, extending from a surge tank to a heat exchanger, to deliver an oxygen product. The surge tank receives the oxygen-rich liquid from a bottom region of the lower pressure column of the plant. Additionally, during normal operations, a stream of the oxygen-rich liquid is also introduced to a reserve storage tank through a backup flow path. During a transient operation, where the air separation plant has ceased operation, the surge tank is isolated and liquid is pumped from the surge tank through an auxiliary flow path to an auxiliary vaporizer to continue the supply of the oxygen product and the surge tank is replenished with oxygen-rich liquid previously stored in the reserve storage tank.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: November 6, 2018
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: David Parsnick, James Meagher, Gerald A. Paolino, John F. Billingham
  • Patent number: 10119734
    Abstract: This invention relates to of a cooling device (1) comprising a compressor (2) which compresses the refrigerant fluid, a condenser (3) which enables the superheated vapor exiting the compressor (2) change to first a liquid-vapor phase then liquid phase entirely, a compressor cabinet (8) positioned separately from the cooling cabinet (7), into which the compressor (2) and the condenser (3) are positioned, one or more evaporators (4), and one or more capillary tubes (5) interposed between the compressor cabinet (8) and the evaporator (6), and a control method thereof.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: November 6, 2018
    Assignee: ARCELIK ANONIM SIRKETI
    Inventors: Yalcin Guldali, Ertugrul Ustundag, Sabahattin Hocaoglu
  • Patent number: 10107514
    Abstract: An air-conditioning apparatus includes a refrigerant circuit connecting a compressor, a first heat exchanger, a first expansion device, and a second heat exchanger. The compressor and the first heat exchanger are housed in a heat source unit, the heat source unit, houses a second expansion device provided at a location on a downstream side with respect to the first heat exchanger and on an upstream side with respect to the first expansion device, and the second expansion device and the first expansion device are connected via an extension pipe. The second expansion device reduces a pressure of refrigerant flowing into the extension pipe in cooling operation to cause the refrigerant to turn into refrigerant having a medium pressure and in a two-phase state, and the medium pressure is lower than a refrigerant pressure in a condenser and higher than a refrigerant pressure in an evaporator.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: October 23, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventor: Koji Yamashita
  • Patent number: 10094603
    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 about 5-15% by weight 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.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: October 9, 2018
    Assignee: Hudson Technologies, Inc.
    Inventor: Charles Harkins
  • Patent number: 10077924
    Abstract: A two-stage refrigeration apparatus includes a high-stage refrigeration cycle including a high-stage-side refrigerant circuit including a high-stage-side compressor, high-stage-side condenser, high-stage-side expansion valve, and high-stage-side evaporator connected by pipes, a low-stage refrigeration cycle including a low-stage-side refrigerant circuit including a low-stage-side compressor, low-stage-side condenser, low-stage-side receiver, low-stage-side expansion valve, and low-stage-side evaporator connected by pipes, a cascade condenser including the high-stage-side evaporator and low-stage-side condenser, a receiver heat exchanging portion configured to cool the low-stage-side receiver, and a high-stage refrigeration cycle controller configured to perform controlling so as to activate the high-stage-side compressor when estimating a low-stage-side refrigerant will reach a supercritical state while the low-stage-side compressor is defrosted on the basis of the pressure of the low-stage-side refrigerant.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: September 18, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keisuke Takayama, Tomotaka Ishikawa, Takeshi Sugimoto, Tetsuya Yamashita, Takashi Ikeda
  • Patent number: 10023022
    Abstract: A thermal management system for an electric vehicle is provided. The thermal management system includes a thermal circuit for regulating a battery temperature. A filter is located upstream of the battery for filtering liquid coolant. The thermal management system also includes a second thermal circuit in fluid communication with the battery thermal circuit. The second thermal circuit provides thermal control to a vehicle system other than the battery. The battery thermal circuit includes a plurality of battery cells. Pluralities of heat exchanger fins are located between each of the battery cells to provide the coolant to regulate the battery temperature. The filter has a filtration transfer function based on a filter characteristic of the fins.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: July 17, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Lev Pekarsky, David Fabricatore
  • Patent number: 9939184
    Abstract: A refrigeration device includes a radiator, an evaporator, a compressor, a heater and a control device. The radiator causes a refrigerant to radiate heat. The evaporator causes the refrigerant to evaporate. The compressor compresses the refrigerant circulating between the radiator and the evaporator. The heater heats lubricating oil in the compressor. The control device controls the heater so that an oil temperature of the lubricating oil in the compressor reaches an oil temperature target value obtained by adding a predetermined temperature to saturation temperature of the refrigerant in the compressor.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: April 10, 2018
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshinori Yura, Shinichi Kasahara, Kousuke Kibo
  • Patent number: 9939332
    Abstract: In a device and method for taking temperature readings on an HVAC system, a first probe is connectable in thermal communication with the HVAC system for taking a first temperature reading thereof. A second probe is connectable in thermal communication with the HVAC system for taking a second temperature reading thereof that is independent of the first temperature reading. A digital display is connectable to the first and second probes for displaying the first and second temperature readings.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: April 10, 2018
    Assignee: Irwin Industrial Tool Company
    Inventors: Bryan Alfano, Joseph J. Houle
  • Patent number: 9920966
    Abstract: An apparatus and a method of removing a high boiling point residue from a waste refrigerant are provided to improve a reuse rate of the waste refrigerant by improving an oil removal rate at which oil is separated from the waste refrigerant. The apparatus includes a vaporizer that is configured to vaporize a waste refrigerant collected from a vehicle and includes an oil outlet configured to exhaust oil separated from the waste refrigerant. In addition, an oil separator is configured to receive the vaporized waste refrigerant transferred from the vaporizer and separate oil mists remaining in the waste refrigerant from the waste refrigerant.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: March 20, 2018
    Assignee: Hyundai Motor Company
    Inventors: Han Seok Kim, Jong Rae Cho, Dae Sung Jung
  • Patent number: 9897361
    Abstract: In various implementations, compressor operation in an air conditioner may be managed by maintaining oil viscosity, a temperature differential, compressor sump temperature, and/or suction pressure. Properties of the air conditioner or portions thereof, such as the compressor, may be determined. To manage compressor operations, operation(s) of the air conditioner may be adjusted based on one or more of the determined properties.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: February 20, 2018
    Assignee: Lennox Industries Inc.
    Inventors: Rakesh Goel, Anuradha Sundararajan, H. Gene Havard, Jr., Mark Olsen
  • Patent number: 9810754
    Abstract: A cooling device for sub-MRI units of an embodiment includes a tank in which cooling water for cooling a heat generating unit that an MRI apparatus has is stored, a pump which circulates the cooling water stored in the tank through a circulation path starting from the tank and traveling around the heat generating unit, a heat exchanger which cools the cooling water, and a controller which decides that a water leakage has occurred on the circulation path when a decreasing rate of the cooling water in the tank is greater than a given reference value.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: November 7, 2017
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Hidekazu Tanaka, Ken Kudou, Masashi Hori
  • Patent number: RE47322
    Abstract: A system for performing rapid charging and evacuation of systems that contain a fluid, such as cooling systems on refrigeration products. In addition, the invention relates to methods of accomplishing rapid charging and evacuation, as well as to tools that form part of the system and that are used to accomplish the methods.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: March 26, 2019
    Assignee: FasTest, Inc.
    Inventors: Robert B. Danielson, Stanlee Meisinger