Condition Sensing Patents (Class 62/129)
  • Patent number: 10433646
    Abstract: A method and system for temperature control of a microclimate device are disclosed. The temperature control can be integrated into a reservation system for the microclimate device. A user interface can receive a user input of a temperature control setting. The user interface can be integrated into the microclimate device. A processor can receive the user input and control a heating and/or cooling device to execute the temperature control setting.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: October 8, 2019
    Assignee: Steelcaase Inc.
    Inventors: Ryan Schmidt, Caroline Kelly, Mark McKenna, Christopher Norman, Rob Scheper, Timothy Swieter
  • Patent number: 10429266
    Abstract: Methods and systems for leak detection in a fluid compression system using a purge system are disclosed herein. In an embodiment, a method for detecting leaks includes determining, during a period of vacuum, a purge exhaust rate of non-condensables from a purge system integrated with a chiller unit. The method includes determining a differential pressure, the differential pressure based on a vacuum side pressure of the chiller unit, where the vacuum side pressure includes at least one of a pressure of a condenser and pressure of an evaporator. The method includes calculating, via a controller, the purge exhaust rate and the differential pressure to identify a leak size based at least in part on the purge exhaust rate.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: October 1, 2019
    Assignee: TRANE INTERNATIONAL INC.
    Inventor: Robert J. Roth
  • Patent number: 10415859
    Abstract: A heat recovery system and methods of their use that include a liquid separator, which allows for relatively less refrigerant charge needed for operation of the heat recovery system, e.g. in a cooling and/or heat recovery mode. The liquid separator separates the liquid and vapor from fluid exiting the heat recovery exchanger, which can ensure that the inlet of the condenser coil is sourced with vapor and minimizes liquid entering the condenser coil. The liquid separator does not receive liquid refrigerant from the condenser coil, such as in a regular operating mode (e.g. cooling and/or heat recovery mode). Use of the liquid separator and its arrangement within the fluid circuit can thereby reduce the operating refrigerant charge needed for the system. A flow control device can control the heat recovery and/or cooling capacity of the heat recovery system.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: September 17, 2019
    Assignees: TRANE INTERNATIONAL INC., TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD.
    Inventor: Yu Qing Du
  • Patent number: 10408485
    Abstract: This application discloses an installation check system used for checking installation of an air conditioner before a start of a trail run of the air conditioner. The installation check system includes a display portion for displaying work instruction information about the installation, an input means configured to be operated for entering a check result based on the work instruction information, a determination portion configured to determine whether the start of the trail run is allowed based on the check result, and a signal generator which generates a drive signal to execute the trail run. The signal generator generates the drive signal under condition of the determination portion allowing the start of the trail run.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: September 10, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Machiko Katori, Shinya Murai
  • Patent number: 10352602
    Abstract: A portable monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and gathers data from one or more sensors and uses the sensor data to calculate a figure of merit related to the efficiency of the system. In one embodiment, the measurements performed by the monitoring system include one or more of: an evaporator input air temperature, an evaporator output air temperature, evaporator air flow, evaporator air humidity, condenser air input temperature, condenser air output temperature sensor, electrical power. In one embodiment, the portable monitoring system receives information about the refrigerant-cycle system from either the system itself or from a computer network.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: July 16, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Lawrence Kates
  • Patent number: 10350804
    Abstract: The present invention provides a molding machine that can easily detect viscosity of resin in a cylinder without advance preparations. An injection molding machine (10) includes an ultrasonic viscosity sensor (20), and the ultrasonic viscosity sensor (20) includes an ultrasonic vibration portion in contact with resin filled in a cylinder (12).
    Type: Grant
    Filed: December 18, 2016
    Date of Patent: July 16, 2019
    Assignee: OMRON Corporation
    Inventors: Morihisa Ota, Koji Hayashi
  • Patent number: 10344767
    Abstract: A method for compressor surge detection to enable model based air estimation includes determining if an intake air compressor pressure ratio is within a predetermined surge pressure range. Then the differences between mass air flow sensor signals measured at a start and finish of each count of a predetermined string length counter when the compressor pressure ratio is within the predetermined surge pressure range. Next, a transition is made to an air mass estimation model output signal from a mass air flow sensor signal when a sum of the air flow differences is greater than a predetermined compressor surge threshold.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: July 9, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Shawn W Murphy, Andrew J Kosanka, Jay S Meldrum, Layne K Wiggins, Adam J Heinzen
  • Patent number: 10254030
    Abstract: A refrigeration cycle device uses a refrigerant having a higher concentration than air under atmospheric pressure, and is capable of preventing a region having a certain refrigerant concentration or higher from being formed even if the refrigerant leaks in a casing of the refrigeration cycle device in a nonenergized state. The refrigeration cycle device includes: a casing having a first opening and a second opening, one of which is an inlet and the other of which is an outlet, and having therein an air course providing communication between the first opening and the second opening; and a refrigerant circuit provided in the air course in the casing and filled with a refrigerant having a higher concentration than air under atmospheric pressure, the casing having a third opening providing communication between the air course and outside of the casing.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: April 9, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsuru Kawashima, Akira Maeda, Takao Komai, Yasuhiro Suzuki
  • Patent number: 10222108
    Abstract: The air conditioner has: an outdoor heat exchanger that exchanges heat between the air and a refrigerant flowing in the interior of this heat exchanger; an outdoor fan that blows air into the outdoor heat exchanger; an outdoor fan motor that rotationally drives the outdoor fan; an outdoor fan inverter that supplies a desired current to the outdoor fan motor; a current detector that detects the current flowing in the outdoor fan motor; and a control unit that controls the outdoor fan inverter such that the rotational frequency of the outdoor fan motor reaches a target rotational frequency. The control unit starts a defrosting operation of the outdoor heat exchanger on the basis of a detection value from the current detector during the heating operation.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: March 5, 2019
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Koji Naito, Kazumoto Urata, Kazuhiko Tani, Hiroaki Kaneko, Mikihito Tokudi, Rei Kasahara
  • Patent number: 10189646
    Abstract: An apparatus and method for distributing articles made by series production is configured to deliver articles to selected storage positions in side-by-side rows of adjacent storage positions for stacked articles in a storage compartment. After selection of a storage position, a transport platform movably mounted on a horizontally movable carriage above the rows is driven to a location above the selected storage position with the platform moved between two possible positions for dispensing articles into the respective rows, an article conveyor on the platform is actuated to transport the article off the platform into the underlying storage position, where it is stacked on top of any previously stacked articles, and the platform is driven back to a start position to receive the next article. The procedure is repeated to distribute subsequent articles to selected storage positions in the storage area.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: January 29, 2019
    Assignee: REDDY ICE TECHNOLOGY LLC
    Inventor: Henrik Pape
  • Patent number: 10184482
    Abstract: A method for controlling multi-stage centrifugal compressors is provided. The method includes, for each stage of the compressor, defining a Mach ratio and impeller diameter, calculating a minimum required motor drive frequency to operate free from surge conditions for a current head factor and flow reduction device position, and adjusting the flow reduction device position while maintaining an actual motor drive frequency at a acceptable level to achieve a leaving chilled water temperature set point. The method also includes measuring a suction pressure and a discharge pressure and calculating a saturated suction temperature and a saturated discharge temperature for each stage of the compressor. The method further includes calculating an actual minimum motor drive frequency that is the greater of a first actual minimum motor drive frequency and a second actual minimum motor drive frequency associated with a first compressor stage and a second compressor stage of the compressor, respectively.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: January 22, 2019
    Assignee: Johnson Controls Technology Company
    Inventor: Damien Jean Daniel Arnou
  • Patent number: 10174975
    Abstract: A heat transfer system includes a first two-phase heat transfer fluid vapor/compression circulation loop including a compressor, a heat exchanger condenser, an expansion device, and a heat absorption side of a heat exchanger evaporator/condenser. A first conduit in a closed fluid circulation loop circulates a first heat transfer fluid therethrough. A second two-phase heat transfer fluid circulation loop transfers heat to the first heat transfer fluid circulation loop through the heat exchanger evaporator/condenser, including a heat rejection side of the heat exchanger evaporator/condenser, a liquid pump, a liquid refrigerant reservoir located upstream of the liquid pump and downstream of the heat exchanger evaporator/condenser, and a heat exchanger evaporator. A second conduit in a closed fluid circulation loop circulates a second heat transfer fluid therethrough having an ASHRAE Class A toxicity and a Class 1 or 2L flammability rating.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: January 8, 2019
    Assignee: CARRIER CORPORATION
    Inventors: Yinshan Feng, Jinliang Wang, Futao Zhao, Thomas D. Radcliff, Parmesh Verma
  • Patent number: 10174976
    Abstract: A heat exchanger may include a heat radiating part, in which a plurality of plates is stacked and a plurality of first flow paths and a plurality of second flow paths disposed while crossing each other are formed inside the plurality of plates, the heat exchanging part being configured to mutually heat-exchange working fluids passing through the first and second flow paths, respectively, and a sub-expansion part integrally formed with an inner side of the heat radiating part, connected with the second flow path, and configured to bypass a part of one working fluid among the working fluids flowing into the heat radiating part and heat-exchange the bypassed working fluid with the working fluid passing through the first flow path.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: January 8, 2019
    Assignees: Hyundai Motor Company, Doowon Climate Control Co., Ltd.
    Inventors: Jae Yeon Kim, Sang Ho Lee, Soon-Jong Lee
  • Patent number: 10146193
    Abstract: The present disclosure relates to a method for primary frequency regulation of an electric network based on large building air conditioning loads cluster. The method includes the use of a two layer control structure with a central coordinating layer and a local control layer. Each local controller performs a thermal model parameter identification and a local air conditioning autonomous control, and uploads local information to the central controller at the end of each communication interval tgap, the central controller broadcasts coordinating information to each local controller. Based on the coordinating information sent from the central controller, each local controller determines whether a power deviation is beyond an action dead zone at the beginning of each action period tact, if beyond, then perform a frequency regulation control action, else, perform no action and estimate operation states of all the air conditionings at the beginning of the next action period.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: December 4, 2018
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Wenchuan Wu, Boming Zhang, Zihao Li, Hongbin Sun, Bin Wang, Qinglai Guo
  • Patent number: 10126012
    Abstract: An air conditioner which is able to prevent leaked refrigerant gas from disadvantageously stagnating at a part of a room space when leakage of refrigerant gas occurs in an indoor unit is provided. An air conditioner of the present invention includes an indoor unit having an upper outlet port and a lower outlet port and uses flammable refrigerant, the air conditioner including: a shutter provided at the lower outlet port and is configured to switch between a blowout capable state in which wind is blown out and a blowout incapable state in which no wind is blown out; a refrigerant gas sensor provided in the indoor unit, and a controlling unit configured to control the shutter. In a driving state in which the lower outlet port is in the blowout incapable state, when the refrigerant gas sensor detects the refrigerant gas, the controlling unit switches the lower outlet port from the blowout incapable state to the blowout capable state.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: November 13, 2018
    Assignee: Daikin Industries, Ltd.
    Inventors: Shinsuke Ikawa, Akio Tasaka, Takashige Mori, Tatsuya Yamashita
  • Patent number: 10120400
    Abstract: A remote controller power supply method for an air-conditioning apparatus, configured to control a plurality of indoor units divided into groups with different remote controllers, is provided that allows exclusion of a supply current monitoring circuit from a circuit board of the indoor units. In the air-conditioning apparatus including an outdoor unit and the plurality of indoor units, the plurality of indoor units are divided into two or more groups, and the indoor units in each of the groups are connected to a different remote controller. The indoor units are each allocated with an address having a ranking given according to a predetermined rule, and the outdoor unit instructs the indoor unit having the address of a first rank, out of the plurality of indoor units in each of the groups, to supply power to the remote controller.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: November 6, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Souichirou Matsuno, Yuuichi Nishi, Tomoaki Kobata, Akihisa Maekita
  • Patent number: 10101053
    Abstract: A zone control panel that is easy and intuitive to use and to program. In some embodiments, a zone control panel may be configured to have an easy to use, single level menu structure with, for example, a configuration mode and/or a checkout mode. The configuration mode may, if present, include a number of menu screens sometimes without any sub-menu levels. Likewise, the checkout mode may, if present, include a number of menu screens sometimes without any sub-menu levels. A mode selector may be provided to select a particular mode, after which, the menu screens that correspond to the selected mode may be sequentially displayed to the user. Other features and aspects are also disclosed.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: October 16, 2018
    Assignee: Honeywell International Inc.
    Inventors: Steven R. Hoglund, Paul G. Schwendinger, Jian Huang, David Arneson, Brad Paine, Tony Liu
  • Patent number: 10094605
    Abstract: Provided is a refrigeration cycle apparatus including a refrigerant circuit configured to circulate refrigerant, a heat exchanger unit accommodating a heat exchanger of the refrigerant circuit, and a controller configured to control the heat exchanger unit, in which the heat exchanger unit includes an air-sending fan, and an electric refrigerant detection unit, the controller is configured to operate the air-sending fan when the controller detects leakage of the refrigerant on the basis of a detection signal from the electric refrigerant detection unit, and the controller is configured to stop electric supply to the electric refrigerant detection unit when a rotation speed of the air-sending fan becomes equal to or larger than a first threshold value under a state in which the electric refrigerant detection unit is supplied with electricity.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: October 9, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenyu Tanaka, Masahiko Takagi, Yasuhiro Suzuki
  • Patent number: 10077909
    Abstract: An outdoor unit of an air conditioner according to one embodiment of the present invention includes a case; and a control box installed in the case, wherein a stepped portion protrudes from an upper surface of the control box, and a plurality of air outlet ports are formed at the stepped portion.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: September 18, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyomin Koo, Sangyoung Kwon, Hoki Lee
  • Patent number: 10060645
    Abstract: An indoor unit of an air-conditioning apparatus includes a casing including an air inlet, an air outlet, and an air passage communicating between the air inlet and the air outlet, the air inlet being located lower than the air outlet, an indoor heat exchanger disposed inside the casing, an indoor fan disposed inside the casing and configured to supply air to the indoor heat exchanger, a refrigerant leakage sensor disposed in the air passage between the air inlet and the air outlet at a position lower than the indoor heat exchanger and the air outlet, and configured to detect refrigerant leakage, and a controller configured to determine whether refrigerant leakage occurs according to a detection result of the refrigerant leakage sensor.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: August 28, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kouji Yamaguchi
  • Patent number: 10007309
    Abstract: An apparatus for monitoring and maintaining thermal exhaust temperatures for monitored servers may include a processor in communication with an exhaust temperature control system. The processor may implement various control loops to monitor inlet and exhaust temperatures for one or more servers, and the processor may monitor temperatures of various hardware components within those one or more servers. When the processor determines that a hardware component for a given server is overheating, the processor may take steps to decrease the temperature of the overheating hardware component for the given server. To determine whether a hardware component is overheating, the processor may leverage the hardware component's operating temperature margin.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: June 26, 2018
    Assignee: Google LLC
    Inventors: Gregory Imwalle, David W. Stiver, Andrew J. Schran, Thomas Chris Newcomb
  • Patent number: 10001308
    Abstract: A refrigeration cycle device circulates a refrigerant, which is a zeotropic refrigerant mixture. In a refrigeration cycle, a compressor, a condenser, an expansion valve, and an evaporator are connected by a refrigerant pipe. The refrigeration cycle device calculates a circulation composition value of the refrigerant based on states before and after the refrigerant temperature and the refrigerant pressure change during the operation of the refrigeration cycle, calculates dT for calibrating a second temperature sensor and dP for calibrating a pressure sensor, based on a reference composition value and the circulation composition value of the refrigerant, corrects the value of the temperature of the refrigerant on an outlet side based on dT, corrects the value of the pressure of the refrigerant based on dP, and operates the refrigeration cycle.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: June 19, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventor: Yusuke Shimazu
  • Patent number: 9987568
    Abstract: A purge system for removing contamination from a chiller system includes a purge chamber including a degassing membrane, the degassing membrane dividing the purge chamber into an inlet portion and an outlet portion, the inlet portion for fluid communication with the chiller system, the degassing membrane to pass contamination from the inlet portion to the outlet portion; a valve coupled to the outlet portion of the purge chamber, the valve providing an exit for contamination from the outlet portion of the purge chamber; and a controller to open or close the valve in response to pressure in the outlet portion of the purge chamber.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: June 5, 2018
    Assignee: CARRIER CORPORATION
    Inventors: Michael A. Stark, Haralambos Cordatos, Rajiv Ranjan
  • Patent number: 9983141
    Abstract: A gas sensor configured to be discolored in response to a pH change upon reaction with a target gas, a refrigerator including the gas sensor, and a method of controlling the refrigerator includes a hydrogel support discolored through reaction with the target gas, and the hydrogel support includes dye provided to be discolored in response to a pH change upon reaction with the target gas.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: May 29, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyun Joo Jung, Yong Won Jeong
  • Patent number: 9880031
    Abstract: A system and method for analyzing an HVAC/R system includes a receiver for receiving signals from sensors, a memory for storing a pressure-enthalpy relationship for refrigerant of the HVAC/R system, a processor in communication with the receiver and the memory, the processor configured to determine a first energy transfer value associated with an air handler of the HVAC/R system based on the received signals from the sensors, determine a second energy transfer value associated with the refrigerant of the HVAC/R system based on the pressure-enthalpy relationship and the received signals from the sensors; and verify the determined first and second energy transfer values by comparing the first energy transfer value with the second energy transfer value.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: January 30, 2018
    Inventor: Douglas Lloyd Lockhart
  • Patent number: 9874380
    Abstract: A specially designed electronic expansion valve control system is provided for use with a refrigerant-based air conditioning circuit having a compressor, a condenser coil, an electronic expansion valve and an evaporator coil fluid coupled in series. The control system includes a unit control and an expansion valve control. The unit control is operative to receive compressor operation-related signal information and responsively generate at least one output signal representative of the received compressor operation-related signal information. The expansion valve control is operative to receive from the unit control only the at least one output signal, and to receive from one of the coils coil operation-related signal information, and to responsively output a control useable to control the expansion valve, the control signal being related in a predetermined manner to the signals received by the expansion valve control.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: January 23, 2018
    Assignee: RHEEM MANUFACTURING COMPANY
    Inventors: Kelvin W. Kleman, Randy R. Koivisto, Jeremy Lee Babb
  • Patent number: 9857113
    Abstract: A computing device calculates a quality of a refrigerant flowing out of a second expansion device on the basis of an inlet liquid enthalpy calculated on the basis of a temperature of the refrigerant flowing into the second expansion device and a saturated gas enthalpy and a saturated liquid enthalpy calculated on the basis of a temperature of the refrigerant flowing out of the second expansion device or a pressure of the refrigerant sucked into a compressor; calculates a liquid-phase concentration and a gas-phase concentration of the refrigerant flowing out of the second expansion device on the basis of the temperature of the refrigerant flowing out of the second expansion device and the pressure of the refrigerant sucked into the compressor; and calculates a composition of the refrigerant circulating in a refrigeration cycle on the basis of the calculated quality, liquid-phase concentration, and gas-phase concentration.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: January 2, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroyuki Morimoto, Koji Yamashita, Yoshihiro Sumida, Yusuke Shimazu
  • Patent number: 9841400
    Abstract: A system (20) and method (100) using decentralized trace gas sensors (44a, 44b, 44c) and a central control element (46) to detect smoldering material in particulate material processing equipment (26) with continuous air flow (22, 24, 34). First and second sensors (44a, 44c) measure gas concentrations at an air inlet (22) and an air outlet (34), respectively. The control element (46) receives the measurements from the sensors (44a, 44c) simultaneously, considers the first and second concentrations simultaneously to determine an amount of gas being produced in the processing equipment (26), determines whether the amount of gas being produced exceeds a threshold value indicative of smoldering, and if so, activates an alarm.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: December 12, 2017
    Assignee: Fike Corporation
    Inventors: Jim Vingerhoets, Jan-Bart Seymortier
  • Patent number: 9834061
    Abstract: The invention relates to an assembly including a heat exchanger and a mounting on which the heat exchanger is mounted. The heat exchanger including a first channel for circulating a coolant supplied by a first collector provided with a first pipe in which the coolant can circulate. The heat exchanger also including a second channel for circulating the coolant supplied by a second collector provided with a second pipe in which the coolant can circulate. The first and second channels define a heat-exchange surface that extends in a substantially vertical plane. The first pipe is located in a lower half of the first collector along a first axis parallel to the plane of the heat-exchange surface, with the second pipe located above the first pipe along the first axis. The invention further relates to an air-conditioning loop including the above-described assembly.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: December 5, 2017
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventors: Isabelle Citti, Regis Beauvis, Jugurtha Benouali
  • Patent number: 9823632
    Abstract: A compressor is provided and includes a shell, a compression mechanism, a motor, a data module, and a compressor controller. The data module includes a data module processor and a data module memory. The compressor controller includes a controller processor and a controller memory distinct from the data module processor and the data module memory. The data module receives sensed data, stores the sensed data in the data module memory, determines a first diagnosis of the compressor based on the sensed data, and communicates the sensed data and the first diagnosis to the compressor controller. The compressor controller determines a second diagnosis of the compressor based on the sensed data and verifies the first diagnosis by comparing the first diagnosis to the second diagnosis.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: November 21, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Hung M. Pham, Nagaraj Jayanth
  • Patent number: 9823003
    Abstract: Provided is a first unit including a first unit including a compressor and a first heat exchanger; a plurality of second units each including a second heat exchanger and each being connected to the first unit via a plurality of branched pipes; a plurality of valves configured to open to permit refrigerant flows and close to not permit the refrigerant flows; a storage unit configured to store connection information indicating a relationship of connection between the plurality of second units and the plurality of pipes; a closed path pipe that is any of the plurality of branched pipes to which no second unit is connected, and a control unit configured to detect whether the closed path pipe is included in the connection information.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: November 21, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shogo Tamaki, Kazuyoshi Shinozaki
  • Patent number: 9746209
    Abstract: A modular refrigeration system includes a refrigeration loop having a compressor, a condenser, an expansion assembly, and a chiller interconnected by a first piping loop cycling hydrocarbon refrigerant. A high side cooling loop includes a first heat exchanger and a first pump interconnected with the condenser by a second piping loop cycling a cooling fluid, the cooling fluid exchanges heat with the hydrocarbon refrigerant at the condenser. A low side cooling loop includes a second heat exchanger and a second pump interconnected with the chiller by a third piping loop cycling a chilled fluid, the chilled fluid exchanges heat with the hydrocarbon refrigerant at the chiller. A space supports the second heat exchanger and is configured to be maintained within a predetermined temperature range, wherein the total charge of hydrocarbon refrigerant associated with the space does not exceed 150 grams.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 29, 2017
    Assignee: Hussman Corporation
    Inventors: Doron Shaprio, Norman E. Street, Chiao M. Lee
  • Patent number: 9696073
    Abstract: A fault detection and diagnostics (FDD) system is provided for a refrigeration circuit having an evaporator and a compressor configured to circulate a refrigerant through the evaporator. The FDD system includes a communications interface configured to receive a measurement of a thermodynamic property affected by the refrigeration circuit and a processing circuit having a processor and memory. The processing circuit is configured to use the measured thermodynamic property to determine an expected suction entropy of the refrigerant at a suction of the compressor, use the expected suction entropy to determine an expected thermodynamic discharge property of the refrigerant at a discharge of the compressor, determine an actual thermodynamic discharge property of the refrigerant at the discharge of the compressor, and detect a fault in the refrigeration circuit by comparing the expected thermodynamic discharge property with the actual thermodynamic discharge property.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: July 4, 2017
    Assignee: Johnson Controls Technology Company
    Inventors: Homero L. Noboa, Andrew J. Boettcher, Saman Beyhaghi
  • Patent number: 9651286
    Abstract: A system is provided and may include a refrigeration circuit having a condenser, a first sensor producing a signal indicative of a detected condenser temperature of the condenser, and processing circuitry in communication with the first sensor. The processing circuitry may determine a derived condenser temperature independent from information received from the first sensor and may compare the derived condenser temperature to the detected condenser temperature to determine a charge level of the refrigeration circuit.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: May 16, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Hung M. Pham
  • Patent number: 9599384
    Abstract: In a refrigeration system having a compressor, a condenser, an evaporator, and a controller for controlling an expansion valve, a process for controlling compressor discharge during a cooling cycle includes monitoring a compressor discharge temperature, operating the expansion valve in a base mode wherein the expansion valve is controlled in response to a difference between actual superheat and desired superheat of the evaporator; and controlling the expansion valve in response to a difference between a set point and a compressor discharge parameter when the ambient air temperature, the return air temperature and the compressor discharge temperature meet respective limits.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: March 21, 2017
    Assignee: CARRIER CORPORATION
    Inventors: Paul V. Weyna, Eliot W. Dudley, Alan D. Abbott, Raymond L. Senf, Jr.
  • Patent number: 9494360
    Abstract: An air conditioner for a vehicle is provided with: a compressor that compresses a heat exchange medium; an external heat exchanger that receives the heat exchange medium and that exchanges heat with the outside of a vehicle compartment; and an evaporator that receives the heat exchange medium and exchanges heat with the inside of a vehicle compartment, and the air conditioner for a vehicle is able to perform: a defrosting cooling operation in which the heat exchange medium that has been compressed by the compressor is made to flow into the evaporator and absorb heat, and to then flow into the external heat exchanger and release heat; and a hot gas operation in which the heat exchange medium that has been compressed by the compressor is made to flow into the external heat exchanger and release heat without being made to absorb heat in the evaporator, and, by switching between performing the defrosting cooling operation and performing the hot gas operation, the air conditioner for a vehicle performs a defrostin
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: November 15, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Isao Tsunoda, Kazuma Ichikawa
  • Patent number: 9464833
    Abstract: A method for converting a refrigerant recovery unit from use with a first refrigerant to use with a second refrigerant includes the steps of opening, with a controller, solenoids along a refrigerant path to remove residue of the first refrigerant into a holding vessel, operating a vacuum pump, as indicated by the controller, to further remove the residue of the first refrigerant from the refrigerant path, introducing, via the controller, an amount of the second refrigerant into the refrigerant path, determining, with a refrigerant identifier, a purity of the second refrigerant in the refrigerant path. A kit is also provided to convert the refrigerant recovery unit for use with the first refrigerant to the second refrigerant.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: October 11, 2016
    Assignee: Bosch Automotive Service Solutions Inc.
    Inventors: Mark McMasters, Tim Wagaman
  • Patent number: 9458841
    Abstract: An oil circulation system for electric motors in a hybrid electric vehicle having, as a power source, an internal combustion engine is disclosed. Provision is made to start oil circulation under high reliability even though an electric pump cannot circulate lubricant oil through the electric motors due to increased viscosity at low temperatures. The oil circulation system includes the electric pump in fluid communication with an oil flow path for the electric motors; a mechanical pump, in fluid communication with the oil flow path, operable on driving power of the engine; and a controller for control of operation of the electric pump and that of the mechanical pump. The controller utilizes operation of the mechanical pump upon detection of abnormality in operation of the electric pump derived from viscosity of the lubricant oil in order to recover the electric pump.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: October 4, 2016
    Assignee: SUZUKI MOTOR CORPORATION
    Inventor: Kunitoshi Tazume
  • Patent number: 9429158
    Abstract: A compressor and an air-conditioner having a compressor are provided. The air-conditioner may be operated in a pre-set operation mode according to a detected application voltage or in a pre-set operation mode according to a pre-set time domain. A compressor temperature or an ambient temperature may be detected to operate the air-conditioner in the pre-set operation mode according to the detected application voltage or in the pre-set operation mode according to the pre-set time domain to continuously operate the compressor.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: August 30, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Sang-Myung Byun, Sang-Mo Kim, Ho-Lim Choi, Jeong-Hun Kim, Tae-Young Noh, Jong-Won Kim
  • Patent number: 9392906
    Abstract: An appliance includes a plurality of electrical loads and a load control circuit including at least a clock enable circuit and a full power timer. The clock enable circuit is configured and operatively connected to activate the full power timer when all of the loads are energized, and the full power timer is configured and operatively connected to de-energize at least one load selected from the plurality of loads on reaching a predetermined full power time limit.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: July 19, 2016
    Assignee: CONAIR CORPORATION
    Inventors: Daniel Lee Sanders, Jonathan G. Berera
  • Patent number: 9377211
    Abstract: An outdoor unit includes a compressor that compresses a flammable refrigerant, a heat source side heat exchanger that exchanges heat between the refrigerant and air in an unconditioned space, an outdoor unit air-sending device disposed at a position where the air is enabled to flow out of a housing to the outside, the outdoor unit air-sending device being driven to maintain the concentration of the refrigerant in the housing at or below a predetermined concentration, and an outdoor unit controller that controls an operation of the compressor and an operation of the outdoor air-sending device. The outdoor unit controller allows the outdoor unit air-sending device to operate in order to maintain the concentration of the refrigerant at or below the predetermined concentration even when the compressor is stopped.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: June 28, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Yamashita, Hiroyuki Morimoto
  • Patent number: 9366465
    Abstract: A method and charging apparatus for adding refrigerant to an air conditioning system are provided. The method includes calculating a temperature differential by measuring a first temperature of a refrigerant inside of a refrigerant container and measuring a second temperature either at the air conditioning system or the ambient temperature. The method further includes using the temperature differential to calculate a compensation amount of refrigerant to add to a previously determined recommended amount of refrigerant based on the type of air conditioning system being charged.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: June 14, 2016
    Assignee: BOSCH AUTOMOTIVE SERVICE SOLUTIONS INC.
    Inventors: Mark McMasters, William Brown, Gary Murray
  • Patent number: 9272353
    Abstract: The invention relates to a device for centering and clamping conduits which are preferably made from alloy steel and which are positioned end to end in order to be welded to form a pipeline. The invention comprises: means for centering and clamping two conduits that are to be welded, optional leak-tight partition means which define an inerting chamber at the mating surface, and inert gas distribution means for creating a protective atmosphere at the mating surface. The inventive device also comprises at least means for regulating the flow of inert gas and/or the supply pressure of said inert gas as a function of the concentration of O2 measured in the protective atmosphere and/or the pressure measured within said atmosphere, such as to maintain the O2 content of the atmosphere below a pre-determined alarm threshold value and/or the pressure of the atmosphere below a pre-determined threshold value.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: March 1, 2016
    Assignee: SERIMAX
    Inventors: Gilles Richard, Eric L'Arvor
  • Patent number: 9267729
    Abstract: Provided is a home appliance that outputs an operating sound, if a predetermined operating sound output condition is satisfied, the home appliance including: a storage unit that stores at least one sound; a manipulation unit through which a sound to be set as the operating sound is selected from among the at least one sound from a user; a sound output unit that outputs the operating sound; and a controller that controls the sound output unit to output the sound selected by the user to the operating sound, if the operating sound output condition is satisfied. The user directly inputs sounds to the home appliance and selects an operating sound from among the sounds so that the home appliance capable of providing various operating sounds according to a user's taste can be provided.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: February 23, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Hee Jun Kang
  • Patent number: 9239175
    Abstract: An air conditioner is provided with a plurality of outdoor heat source units, an indoor unit, a liquid refrigerant communication pipe and gas refrigerant communication pipe, and a controller. Each heat source unit has a compressor, an outdoor heat exchanger, and an accumulator. The indoor unit has an indoor expansion valve and an indoor heat exchanger. The controller starts an other of the heat source units in a stopped state when it is determined that the amount of refrigerant is excessive in a first heat source unit in an operating state.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: January 19, 2016
    Assignee: Daikin Industries, Ltd.
    Inventors: Takuya Kotani, Kikuji Hori
  • Patent number: 9120366
    Abstract: A system and methods are provided for monitoring for a clogged or unclogged state of an air filter in an automotive HVAC system. The HVAC system includes a blower having a blower motor providing a driven airflow. A plurality of outlet registers is controllable to provide a plurality of circulation modes. An evaporator selectably cools the driven airflow, and the air filter passes the driven airflow. The method enters a baseline condition, wherein the baseline condition includes applying a moisture purge to the evaporator and selection of a predetermined circulation mode. The blower motor is controlled to maintain a testing speed. An energization of the blower motor is quantified while maintaining the testing speed. The energization is compared to a base value derived according to the baseline condition with the air filter in an unclogged state. A replacement action is triggered when the energization is greater than the base value.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: September 1, 2015
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Paul B. Hoke, William S. Johnston, James R. Hurd
  • Patent number: 9121920
    Abstract: A method is provided for operating a sensor of a vehicle. The sensor is configured to detect objects within a detection range and the method includes, but is not limited to detecting an object with the sensor. In addition, a position of the object is determined with data from the sensor. Furthermore, position data emitted by the object is received with a receiving apparatus of the vehicle and the position of the object is determined with the position data. Moreover, the position determined with the sensor is compared with the position of the object and comparative data is determined and an automatic adjustment of the sensor and/or output of a message inside the vehicle is made depending on the comparative data.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: September 1, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Nikolas Wagner
  • Patent number: 9086312
    Abstract: A printing device has a detecting section in which a light emitting section and a light receiving section are provided, liquid reservoirs for storing liquid in which a prism is provided to reflect light emitted from the light emitting section corresponding to a remaining state of the liquid, and a control section. The control section determines whether a process for air bubbles that is a process corresponding to an adhesion state of air bubbles in the prism is to be conducted or not based on a signal of light reception results obtained by receiving reflected light from the prism by the light receiving section.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: July 21, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Yuichi Nishihara
  • Publication number: 20150143823
    Abstract: A refrigeration system for vaccine storage and/or transportation includes an inner chassis. One or more vertical lift carriages are positioned in the inner chassis and can house a plurality of vaccines, pharmaceuticals, and/or other perishable items. Each vertical lift carriage is contained in an isothermal chamber. One or more isothermal chambers surround a phase change reservoir (PCR), which is positioned at a central location of the inner chassis and contains frozen water or another phase change material. A thermal attenuation layer can be disposed between the PCR and each isothermal chamber to moderate energy transfer between the chamber and the PCR, thereby controlling the temperature range in each isothermal chamber. Methods for making and using the refrigeration system are also disclosed.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Inventors: Jonathan Slack, Howdy Goudey, Reshma Singh, Shashi Buluswar, Ashok Gadgil
  • Publication number: 20150143831
    Abstract: In some embodiments, a refrigeration device includes: walls substantially forming a liquid-impermeable container configured to hold phase change material internal to the refrigeration device; at least one active refrigeration unit including a set of evaporator coils positioned at least partially within the liquid-impermeable container; a unidirectional thermal conductor with a condensing end and an evaporative end, the condensing end positioned within the liquid-impermeable container; a first aperture in the liquid-impermeable container, the first aperture of a size, shape and position to permit the set of evaporator coils to traverse the aperture; a second aperture in the liquid-impermeable container, the second aperture including an internal surface of a size, shape and position to mate with an external surface of the unidirectional thermal conductor; and one or more walls substantially forming a storage region in thermal contact with the evaporative end of the unidirectional thermal conductor.
    Type: Application
    Filed: September 12, 2014
    Publication date: May 28, 2015
    Inventors: Fong-Li Chou, Philip A. Eckhoff, Lawrence Morgan Fowler, William Gates, Jennifer Ezu Hu, Muriel Y. Ishikawa, Fridrik Larusson, Shieng Liu, Nathan P. Myhrvold, Nels R. Peterson, Clarence T. Tegreene, Maurizio Vecchione, Lowell L. Wood, JR., Victoria Y.H. Wood